CN105642620A - Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force - Google Patents
Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force Download PDFInfo
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- CN105642620A CN105642620A CN201410641149.8A CN201410641149A CN105642620A CN 105642620 A CN105642620 A CN 105642620A CN 201410641149 A CN201410641149 A CN 201410641149A CN 105642620 A CN105642620 A CN 105642620A
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Abstract
The invention discloses a method and device for cleaning and coating of the interior of a nuclear power station pipeline through aerodynamic force. According to the method, whirlwind mixed with water, sand, coating and other materials is blown into the pipeline so that cleaning and coating can be carried out on the inner wall, and a coating can be formed on the inner wall of the pipeline. Through the method, potential safety hazards of nuclear power station unit basic facilities are reduced, pipeline nodules are effectively removed, the water quality is improved, the water flow rate is restored, pipeline corrosion is prevented, and the service life of the pipeline is prolonged; modification cost is reduced, replacing time is shortened, and the purposes of energy conservation, emission reduction, environmental protection and safe production are finally achieved. Corrosion treatment for the inner walls of medium-small-diameter pipelines is a worldwide problem, the method is a technology which fills up the worldwide blank and is used for non-excavation treatment of corrosion of the inner walls of the medium-small-diameter pipelines, the precedent is created for pipeline corrosion treatment, and a good foundation is laid for subsequent pipeline corrosion treatment.
Description
Technical field
The application relates to nuclear power station pipeline cleaning field, especially relates to method and the device of a kind of nuclear power station pipeline internal cleaning and coating.
Background technology
Nuclear power plants is also known as nuclear power plant, and it refers to make nuclear fuel with uranium, plutonium etc., and the energy conversion it produced in fission reaction is the power station of electric energy.
In Nuclear power plants, factory's crucial part that water pipe is power plant's Infrastructure, directly affects the life-span of power plant. But the growth along with the unit operation time limit, factory's use water Metal pipeline corrosion problem is day by day serious, and the field pipes evaporating, emitting, dripping or leaking of liquid or gas that causes by corrosion, tube wall subtract one of problem major issues becoming puzzlement power station at present such as thin, water degradation, line clogging.
In order to eliminate the problems such as nuclear plant safety hidden danger, once corrosion problem occurs in factory's use water metal tube, just corrosion pipeline must be carried out repair process.
At present both at home and abroad to the cleaning in pipeline and aseptic technic, physics method and chemical method can be divided into principle. Concrete segmentation is then chemical method (pickling etc.), vibratory drilling method (ultrasonic wave etc.), electromagnetic method (electric shock, negative electrode, magnetization etc.), lining method (interspersed pipe liner soft, hard) and mechanical process (built-in tool, robot etc.).
But the function that chemical method, vibratory drilling method and electromagnetic method are only repaired, without the function of transformation, strengthening, lining method and mechanical process have reparation, transform, strengthen function, but cannot solve bend pipe, pipeline reducing diameter, the technical problem such as small-bore.
Summary of the invention
The application provide a kind of can when not dynamic pipe-line equipment; complete the cleaning of inner-walls of duct corrosion product; and inner-walls of duct is carried out coating antiseptic protection; recover the original design function of pipeline, use method and the device of aerodynamic force cleaning and coating to ensure the nuclear power station pipeline inside of the safe reliability of conduit running.
First aspect according to the application, the application provides a kind of nuclear power station pipeline inside to use the method for aerodynamic force cleaning and coating, comprises step:
First stage cleanup step: be blown into whirlwind in the pipeline to be cleared up, corrosion product comparatively loose in cleaning pipeline;
Subordinate phase cleanup step: add water in whirlwind and carry out blowing sweeping;
Phase III cleanup step: add water in whirlwind and sand grains carries out blowing sweeping;
Fourth stage cleanup step: be again blown into, in the pipeline to be cleared up, the whirlwind being mixed with water;
Coating step: the whirlwind being blown into contaminated product coating in the pipeline after cleaning, carries out coating problems to inwall.
Use the further improvements in methods of aerodynamic force cleaning and coating as described nuclear power station pipeline inside, in described phase III cleanup step, sand grains used is quartz sand.
The further improvements in methods of aerodynamic force cleaning and coating are used, in fourth stage cleanup step, when pipeline derusting grade reaches DSa as described nuclear power station pipeline insideOr after DSa3 grade, carry out coating step.
Use the further improvements in methods of aerodynamic force cleaning and coating as described nuclear power station pipeline inside, also comprise:
Add sand dress watch step: inspect entrance, outlet and the middle section to be cleared up by random samples, the examined surface of visual inspection.
The further improvements in methods of aerodynamic force cleaning and coating are used as described nuclear power station pipeline inside, described add in sand dress watch step, qualified requirement is for examined showing no-sundries, without grease, free from dust, stainless steel surface is through overpickling and Passivation Treatment, carbon steel piping allows steel surface to have the continuous oxidation film being exposed to because of the short period of time and being formed in air, does not fill and is permitted the floating rust of surface existence.
Use the further improvements in methods of aerodynamic force cleaning and coating as described nuclear power station pipeline inside, also comprise just step and thorough curing schedule admittedly.
Use the further improvements in methods of aerodynamic force cleaning and coating as described nuclear power station pipeline inside, in described first step admittedly, also comprise:
The thick wall of pipeline is measured: selects multiple point from the pipeline after coating, uses ultrasonic wave detect thickness, judges that whether coating is qualified.
Use the further improvements in methods of aerodynamic force cleaning and coating as described nuclear power station pipeline inside, also comprise:
Leak source detecting step: check whether there is corrosion failure point on pipeline.
Use the further improvements in methods of aerodynamic force cleaning and coating as described nuclear power station pipeline inside, in leak source detecting step, leak source processing scheme is:
Change the pipeline with leak source;
Or the leak source on pipeline is wrapped up.
Use aerodynamic force cleaning and the further improvements in methods of coating as described nuclear power station pipeline inside, described leak source on pipeline is carried out wrapping comprise:
Glass reinforced plastic colligation;
Or metal amendment agent repairing.
The application also provides a kind of pipe interior to use the device of aerodynamic force cleaning and coating, comprising:
Whirlwind provides equipment, and in order to provide whirlwind, described whirlwind provides equipment to comprise air compressor machine and gas-holder, and described air compressor machine is connected with gas-holder, and described gas-holder is connected with mechanical arm;
Mechanical arm, described mechanical arm and whirlwind provide equipment connection, and it has at least one charging opening, and described mechanical arm is for being connected with the entrance of pipeline for clearance;
And retrieving arrangement, described retrieving arrangement is for being connected with the outlet of pipeline for clearance, and described retrieving arrangement is at least one, and described retrieving arrangement is for connecting with the outlet of corresponding pipeline for clearance.
The further improvement of the device of aerodynamic force cleaning and coating is used as described pipe interior, described retrieving arrangement is collection box, described collection box comprises casing, and described casing has regenerant entrance and pneumatic outlet, and gas outlet is provided with the first strainer.
Use the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, the casing of described collection box has liquid exit, and described liquid outlet arranges tow filtrator.
Use the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, described collection box has relief chamber, is reduced pressure by the mixture entering collection box.
Using the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, also comprise dust keeper, described dust keeper is located at and reclaims on dress.
Use the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, described dust keeper comprises frame body and dw, and described frame body is arranged around retrieving arrangement surrounding, and described dw is layered on frame body.
The application also provides a kind of pipe interior to use the device of aerodynamic force cleaning and coating, comprising:
Whirlwind provides equipment, and in order to provide whirlwind, described whirlwind provides equipment to comprise air compressor machine and gas-holder, and described air compressor machine is connected with gas-holder, and described gas-holder is connected with mechanical arm;
Mechanical arm, described mechanical arm and whirlwind provide equipment connection, and it has at least one charging opening, and described mechanical arm is for being connected with the entrance of pipeline for clearance;
And retrieving arrangement, described retrieving arrangement is for being connected with the outlet of pipeline for clearance, and described retrieving arrangement is at least one, and described retrieving arrangement is for connecting with the outlet of corresponding pipeline for clearance.
The further improvement of the device of aerodynamic force cleaning and coating is used as described pipe interior, described retrieving arrangement is collection box, described collection box comprises casing, and described casing has regenerant entrance and pneumatic outlet, and gas outlet is provided with the first strainer.
Use the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, the casing of described collection box has liquid exit, and described liquid outlet arranges tow filtrator.
Use the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, described collection box has relief chamber, is reduced pressure by the mixture entering collection box.
Using the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, also comprise dust keeper, described dust keeper is located at and reclaims on dress.
Use the further improvement of the device of aerodynamic force cleaning and coating as described pipe interior, described dust keeper comprises frame body and dw, and described frame body is arranged around retrieving arrangement surrounding, and described dw is layered on frame body.
The useful effect of the application is:
The nuclear power station pipeline inside that the application provides uses method and the device of aerodynamic force cleaning and coating, in the method step, first stage cleanup step (is namely blown into whirlwind in the pipeline to be cleared up) and subordinate phase cleanup step (namely adding water in whirlwind to carry out blowing sweeping), can clear up the comparatively loose corrosion product in pipeline; Phase III cleanup step (namely add water in whirlwind and sand grains carries out blowing sweeping) can clear up the corrosion product of adhere firmly on inner-walls of duct further, until corrosion product is eliminated totally.Fourth stage cleanup step (is namely blown into, in the pipeline to be cleared up, the whirlwind being mixed with water) again can take sand grains in previous step and corrosion product out of pipeline, to carry out coating. Coating step (is blown into the whirlwind of contaminated product coating in the pipeline after cleaning) and can realize inwall is carried out coating problems, forms coating at inner-walls of duct. This pipe interior uses aerodynamic force to clear up the method with coating can when not dynamic pipe-line equipment; complete the cleaning of inner-walls of duct corrosion product; and inner-walls of duct is carried out coating antiseptic protection, recover the original design function of pipeline, ensure the safe reliability of conduit running further.
Accompanying drawing explanation
Fig. 1 is device embodiment one structural representation that the application's nuclear power station pipeline inside uses aerodynamic force cleaning and coating;
Fig. 2 is middle collection box structural representation embodiment illustrated in fig. 1;
Fig. 3 is middle dust keeper STRUCTURE DECOMPOSITION figure embodiment illustrated in fig. 1;
Fig. 4 is middle step block diagram embodiment illustrated in fig. 1;
Fig. 5 is middle derusting grade DSa embodiment illustrated in fig. 1Model photo figure;
Fig. 6 is middle derusting grade DSa3 model photo figure embodiment illustrated in fig. 1;
Fig. 7 is device embodiment two structural representation that the application's nuclear power station pipeline inside uses aerodynamic force cleaning and coating;
Fig. 8 is device embodiment three structural representation that the application's nuclear power station pipeline inside uses aerodynamic force cleaning and coating.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment. The application can realize with multiple different form, is not limited to the enforcement mode described by the present embodiment. Thering is provided the object of following embodiment to be convenient to this to the application clearer understanding thoroughly of disclosure, wherein the words of the indicating position such as upper and lower, left and right is only for shown structure position in respective figure.
In the face of factory's use water Metal pipeline corrosion problem is day by day serious; the problems such as thin, water degradation, line clogging are subtracted by the field pipes evaporating, emitting, dripping or leaking of liquid or gas that causes of corrosion, tube wall; in order to can when not dynamic pipe-line equipment; complete the cleaning of inner-walls of duct corrosion product; and inner-walls of duct is carried out coating antiseptic protection; recover the original design function of pipeline; to ensure the safe reliability of conduit running; the application utilizes aerodynamic principle; remove the corrosion product of inner-walls of duct with physical method, inner-walls of duct is carried out coating antiseptic protection.
This nuclear power station pipeline inside uses the method for aerodynamic force cleaning and coating, it it is the airflow entrainment sand grains rotating propelling, the principle of rolling resistance removes tube inner corrosion product, residue, coating is advanced again with whirlwind, coating uniform (rotary centrifugal force effect) is made to be bonded in inner-walls of duct, from but inner-walls of duct forms one layer of corrosion protection coating, it is achieved the object of the invention.
Embodiment one:
The present embodiment one provides a kind of nuclear power station pipeline inside to use the device of aerodynamic force cleaning and coating.
Please refer to Fig. 1, pipe interior use aerodynamic force cleaning comprises air compressor machine 1, gas-holder 2, mechanical arm 3 and retrieving arrangement 4 with coating.
Air compressor machine 1 (air compressor) and gas-holder 2 form a whirlwind and provide equipment, in order to provide whirlwind.
Air compressor is the basic product of the modernization of industry, the main body that air compressor is just to provide in the dynamo-electric bleed air source device of nucleus equipment that gas driving source is pneumatic system, it is the device that the mechanical energy of former dynamic (normally electric motor) converts to gaseous tension energy, is the pressure generator of pressurized air.
Gas-holder 2 refers to and is used for the equipment of stored-gas specially, plays stable system pressure simultaneously.
After air compressor machine 1 installed by gas-holder 2, can not only storing compressed air, reduce due to the pressure pulsation of the discontinuous generation of compressor air-discharging, it is achieved air feed and by the balance of gas, and the temperature of pressurized air can be reduced, reduce the load of filter for molten and siccative.
Therefore, in the present embodiment, existing all kinds of air compressor 1 and corresponding gas-holder 2 can be selected according to actual demand.
Certainly, in other embodiments, it is possible to adopt other equipment that can produce whirlwind and devices.
Specifically, in the present embodiment, start air compressor and produce pressurized air, by rubber hose by compressed air delivery in empty pressure tank, observe empty pressure pressure tank table, the stoppage in transit air compressor machine 1 when pressure reaches 8bar, opens empty pressure tank and gives vent to anger valve, pressurized air is transferred to by rubber hose the gas-holder 2 of mechanical arm 3.
The startup button on start-up operation device 3 when pressure reaches 8bar, pressurized air moment is discharged by mechanical arm 3 gas-holder 2, forms whirlwind.
Air compressor machine 1 manufactures gas storage and presses in tank at sky, opens the valve on empty pressure tank, and gas arrives rubber hose through mechanical arm 3, form air-flow, when air-flow reaches certain speed, just form whirlwind, during low speed, the motion of curved wave, linearly moves during high speed, is rotary motion during middling speed.
Mechanical arm 3 comprises reinforced import, and for coordinating in subsequent step, each step adds various material to complete cleaning or coating step in this reinforced import, such as corresponding in hereafter each step adds water, sand grains, coating etc., all joins whirlwind from this charging opening.
Mechanical arm 3 is connected to the entrance of pipeline 6 for clearance by rubber hose 5, in order to be imported to by whirlwind in pipeline 6 for clearance.
This retrieving arrangement 4 is connected to the outlet of pipeline 6 for clearance, in order to be reclaimed by the rubbish cleared with whirlwind.
Please refer to Fig. 2, the retrieving arrangement 4 that the present embodiment provides is collection box.
This collection box is one, and it comprises casing 41, and this casing 41 has regenerant entrance 42 and pneumatic outlet 43.
This regenerant entrance 42 is connected with pipe outlet, such as, is connected by rubber hose 5, thus regenerant is entered collection box from pipeline.
Need to use quartz sand as abrasive material when removing rust, the dirt of inner-walls of duct, quartz sand through whirlwind blow sweep after become powder, powder finally enters receipts ash bin with the rust destroyed, dirt, owing to air pressure has 8bar, have a large amount of dust outside now receiving extensive case to blow out, dust is scattered on ground, extremely difficult cleaning, it is also possible to affect the normal operation of equipment.
Therefore pneumatic outlet 43 place is provided with the first strainer 44, to avoid the dust produced in purge arbitrarily to spread and affect the safe operation of equipment and the pollution on ground.
Wherein, the first strainer 44 can be filter screen.
After dust is filtered by upper sieve, clean gas is discharged by top, and the particulate matter such as dust fall into collection box casing 41.
Certainly, in other embodiments, it is possible to adopt other devices with filtering function to replace the filter screen in the present embodiment.
Meanwhile, this collection box also has liquid exit 46, discharges in collection box for liquid in pipeline.
Take away solid regenerant for the ease of liquid, further tow filtrator 47 is set at liquid exit 46 place and filters.
Further, owing to having certain pressure when regenerant enters collection box, collection box therefore also can be made further to have relief chamber 45, the mixture entering collection box is reduced pressure.
This relief chamber 45 can make the cavity of one or multi-channel sinuous setting, to reduce pressure.
Certainly, collection box also can arrange one or more garbage mouth (not shown), and in order to avoid leakage outside rubbish, can arrange on garbage mouth can the door of switch.
When regenerant has been collected, garbage mouth can be opened, by the garbage-cleaning collected in it out, so that subsequent disposal.
Certainly, in order to strengthen dust-proof effect, the present embodiment one can also be set up a dust keeper.
This dust keeper is located on retrieving arrangement 4, dust is set up second barrier (first barrier is the first strainer 44 in collection box), greatly reduces the random diffusion of dust, and the dust fallen to the ground obtains good control.
Specifically, please refer to Fig. 3, the dust keeper 8 that the present embodiment one provides comprises frame body 81 and dw 82, and this body 81 is arranged around retrieving arrangement 4 surrounding, and dw 82 is layered on frame body 81.
Wherein, frame body 81 can adopt scaffolding material to build, and dw 82 can adopt plastics gummed paper, and plastics colloid is layered on scaffolding, wraps retrieving arrangement 4 completely.
In the present embodiment one, the first strainer 44 is set and dust keeper ensure that on-the-spot degree of cleaning, eliminates the hidden danger affecting peripheral equipment safe operation simultaneously. Implementation result is remarkable.
In this device, cyclone apparatus can provide a kind of spiral whirlwind, for removing the corrosion product of inner-walls of duct. Mechanical arm 3 provides equipment connection with whirlwind, and it has at least one charging opening, and this charging opening can add various material, such as water, sandstone, coating etc. When specifically operating, mechanical arm 3 is connected with the entrance of pipeline 6 for clearance, and retrieving arrangement 4 is connected with the outlet of pipeline 6 for clearance, open whirlwind generator and produce whirlwind, this whirlwind carries the various materials added from mechanical arm 3, through pipeline 6 for clearance, it is achieved to pipeline cleaning and coating, it is achieved this technical purpose.
Embodiment two:
The present embodiment two provides a kind of nuclear power station pipeline inside to use the method for aerodynamic force cleaning and coating.
Please refer to Fig. 4, the method comprises the following steps:
First stage cleanup step: be blown into whirlwind in the pipeline to be cleared up, corrosion product comparatively loose in cleaning pipeline;
Subordinate phase cleanup step: add water in whirlwind and carry out blowing sweeping;
Phase III cleanup step: add water in whirlwind and sand grains carries out blowing sweeping;
Fourth stage cleanup step: be again blown into, in the pipeline to be cleared up, the whirlwind being mixed with water;
Coating step: the whirlwind being blown into contaminated product coating in the pipeline after cleaning, carries out coating problems to inwall.
Each step describes in detail as follows:
In first stage cleanup step, first can be connected with the entrance of pipeline 6 for clearance by whirlwind method treatment facility, the present embodiment two uses the device of aerodynamic force cleaning and coating to be described for the nuclear power station pipeline inside described in above-described embodiment one.
Adopt above-mentioned nuclear power station pipeline inside to use the device of aerodynamic force cleaning and coating, first mechanical arm 3 is connected through the entrance of rubber hose 5 with pipeline 6 for clearance, the outlet of pipeline 6 for clearance with for a collection box is connected.
Start air compressor and produce pressurized air, by rubber hose 5 by compressed air delivery to, in empty pressure tank, observing empty pressure pressure tank table, the stoppage in transit air compressor machine 1 when pressure reaches 8bar, open empty pressure tank to give vent to anger valve, pressurized air is transferred to by rubber hose 5 gas-holder 2 of mechanical arm 3.
The startup button on start-up operation device 3 when pressure reaches 8bar, pressurized air moment is discharged by mechanical arm 3 gas-holder 2, forms whirlwind.
Air compressor machine 1 manufactures gas storage and presses in tank at sky, opens the valve on empty pressure tank, and gas arrives rubber hose through mechanical arm 3, form air-flow, when air-flow reaches certain speed, just form whirlwind, during low speed, the motion of curved wave, linearly moves during high speed, is rotary motion during middling speed.
This step is mainly used in clear up corrosion product comparatively loose in pipeline.
In subordinate phase cleanup step, in whirlwind, add water carry out blowing sweeping.
Specifically, a small amount of water is joined in whirlwind from the charging opening of mechanical arm 3, under the blowing of whirlwind, treat cleaning pipeline 6 together carry out blowing sweeping.
In phase III cleanup step, in whirlwind, add water and sand grains carries out blowing sweeping, until corrosion product is removed clean.
Specifically, water and sand grains are joined in whirlwind from the charging opening of mechanical arm 3, treat cleaning pipeline 6 and carry out cleaning further.
In this step, the important step of protective coating system is set up in surface sand-blasting process, through the result that test of many times draws, cleans in sandblasting and provides the surface of stability anchor chain shape outward appearance to carry out coating decoration and can obtain high-quality preservative property and wearing quality.
For obtaining the abrasive material that suitable surfaceness must select the polishing of applicable engineering to require, in some cases, because sandblasting residue meeting failure surface degree of cleaning, grinability must be selected not to be very strong sand grains, present commercial environment is very tight to quality guarantee and environmental requirement, and the characteristic therefore knowing sand-blasting abrasive is very crucial. Unfortunately, it does not have a kind of sand-blasting abrasive is applicable to all construction works, fortunately, multiple different abrasive material and grade is had can to select for everybody.
The sand-blasting abrasive that decision project is the most suitable, it is necessary to the definition of clear and definite abrasive material.
Abrasive material be a kind of for grinding, the material of polishing, it is possible to be natural material, manually manufacture and the byproduct that processes.
The material that we commonly use has usually: Brown Alundum, import granulated glass sphere, white fused alumina, black palm fibre jade, silicon carbide, zircon sand, steel sand, ceramic sand, particles etc.
When select needed for abrasive material time, it has to be taken into account the characteristic of material.
These characteristics comprise hardness, size, shape, color and luster, Chemical Composition, weight, availability, environmental factors, cost, preferably carry out selection according to each project.
In this step, sand grains selection requirement is: grains of sand hardness is lower than galvanized steel pipe, quality small band corner angle.
The present embodiment adopt quartz sand as this step sand grains used.
Concrete operation steps is, after choosing quartz sand, is joined by 5kg quartz sand in mechanical arm 3 hold-up vessel, is brought in need pipeline to be processed by quartz sand by whirlwind.
Under the effect of whirlwind, quartz sand fully contacts with the corrosion product on inner-walls of duct, by continuous friction, is polished off by corrosion product from tube wall, but is less than conduit hardness due to selected quartz sand hardness, therefore can not be damaged by tube wall.
Observe the change in shape of quartz sand in rubbish at collection box place, if quartz sand quartz sand major part keeps former granular size, illustrate that tube wall corrosion product is removed, reach expection object.
In fourth stage cleanup step, again it is blown into, in the pipeline to be cleared up, the whirlwind being mixed with water.
Specifically, whirlwind adds a large amount of water and blows and sweep, carry out pipeline cleaning, make the DSa that derusting grade reaches " before GB8923-88 application steel surface rusty degree and derusting grade " and specifiesOr DSa3 grade, coating problems can be carried out.
Please refer to Fig. 5, this DSaDerusting grade model photo is as shown in Figure 5.
Please refer to Fig. 6, this DSa3 derusting grade model photo is as shown in Figure 6.
In coating step, in the pipeline after cleaning, it is blown into the whirlwind of contaminated product coating, inwall is carried out coating problems.
In this step, can with reference to the requirement whether meeting " the defeated distribution apparatus of Drinking Water and protective material Hygienic safety evaluation specification " to select coating used.
The present embodiment coating selection used be " above be coated with board 6532 paddle equipment inner wall coating "; Major ingredient has: epoxy resin, polymeric amide, titanium dioxide, barium sulfate, talcum powder, ethanol, and it is anticorrosion that it can be good at for drinking water pipeline etc.
Further, it is also possible to comprise and add sand dress watch step.
This step is specially: inspect entrance, outlet and the middle section to be cleared up by random samples, the examined surface of visual inspection.
The qualified requirement of this step is for examined showing no-sundries, without grease, free from dust, stainless steel surface is through overpickling and Passivation Treatment, carbon steel piping allows steel surface to have the continuous oxidation film being exposed to because of the short period of time and being formed in air, does not fill and is permitted the floating rust of surface existence.
Further, after coating step, also comprise just step and thorough curing schedule admittedly.
Consolidate in step and thorough curing schedule just, nuclear power station pipeline coated inside is dried.
Further, first step admittedly can also comprise the thick wall of pipeline to measure.
This step is specially: selects multiple point from the pipeline after coating, uses ultrasonic wave detect thickness, judges that whether coating is qualified.
In the present embodiment, coating thickness detector is adopted to carry out coating thickness measurement; The thinnest and the thickest point of coating is measured, many surveys several somes during measurement; Specify to judge that whether coating is qualified according to according to table 2.0.1 in " in SYT4057-2000 steel pipe liquid epoxy coating preservative coat technological standard ".
In this step, pipeline wall thickness uses ultrasonic wave to carry out, and is the prerequisite using whirlwind method, can not be less than the minimum wall thickness of engineering calculation.
Further, it is also possible to comprise leak source detecting step.
This step is specially: check whether there is corrosion failure point on pipeline.
This leak source refers to the cut occurred on a complete pipeline. If leak source does not process, when carrying out whirlwind method, having risk of metalling run out, whirlwind method cannot perform.
Occurring leak source in scale removal process, it is necessary to stop whirlwind method cleaning work immediately, if leak source expands, the ejection with pressure of the grains of sand in tube wall, splashes and may cause structure deteriorate on on-the-spot sensitive equipment, affect unit and normally run time serious.
In this step, having the existence of leak source as being checked through on pipeline, its processing scheme has two kinds:
Change the pipeline with leak source;
Or the leak source on pipeline is wrapped up
Wherein, the leak source on pipeline is wrapped up and comprises two kinds of modes:
Glass reinforced plastic colligation;
Or metal amendment agent repairing.
In the method that the present embodiment provides, first stage cleanup step (is namely blown into whirlwind in the pipeline to be cleared up) and subordinate phase cleanup step (namely adding water in whirlwind to carry out blowing sweeping), can clear up the comparatively loose corrosion product in pipeline; Phase III cleanup step (namely add water in whirlwind and sand grains carries out blowing sweeping) can clear up the corrosion product of adhere firmly on inner-walls of duct further, until corrosion product is eliminated totally. Fourth stage cleanup step (is namely blown into, in the pipeline to be cleared up, the whirlwind being mixed with water) again can take sand grains in previous step and corrosion product out of pipeline, to carry out coating.Coating step (is blown into the whirlwind of contaminated product coating in the pipeline after cleaning) and can realize inwall is carried out coating problems, forms coating at inner-walls of duct. This nuclear power station pipeline inside uses aerodynamic force to clear up the method with coating can when not dynamic pipe-line equipment; complete the cleaning of inner-walls of duct corrosion product; and inner-walls of duct is carried out coating antiseptic protection, recover the original design function of pipeline, ensure the safe reliability of conduit running further.
Embodiment three
Please refer to Fig. 7, the present embodiment three provides a kind of nuclear power station pipeline inside to use the method for aerodynamic force cleaning and coating.
The present embodiment three is with the difference part of embodiment two, and in the present embodiment, the while of mechanical arm 3, pipeline 6,7 for clearance with at least two is connected, and the outlet of these two pipelines 6,7 for clearance is connected with same collection box 4 again simultaneously.
The method of the present embodiment three comprises the following steps:
First stage cleanup step: be blown into whirlwind in the pipeline to be cleared up, corrosion product comparatively loose in cleaning pipeline;
Subordinate phase cleanup step: add water in whirlwind and carry out blowing sweeping;
Phase III cleanup step: add water in whirlwind and sand grains carries out blowing sweeping;
Fourth stage cleanup step: be again blown into, in the pipeline to be cleared up, the whirlwind being mixed with water;
Coating step: the whirlwind being blown into contaminated product coating in the pipeline after cleaning, carries out coating problems to inwall.
Wherein, every step particular content can with reference to the content described by above-described embodiment two.
Further, increase can also be optionally selected to add sand dress watch step, the thick wall measurement of pipeline and/or leak source detecting step equally.
Embodiment four
Please refer to Fig. 8, the present embodiment four provides a kind of nuclear power station pipeline inside to use the method for aerodynamic force cleaning and coating.
The present embodiment four is with the difference part of embodiment two:
The present embodiment has at least two retrieving arrangements 4,4a;
The while of mechanical arm 3, pipeline 6,8 for clearance with at least two is connected, and the outlet of every root pipeline 6,8 for clearance is connected with collection box 4, a 4a, and namely each collection box correspondence reclaims the regenerant in a pipeline.
The method of the present embodiment four comprises the following steps:
First stage cleanup step: be blown into whirlwind in the pipeline to be cleared up, corrosion product comparatively loose in cleaning pipeline;
Subordinate phase cleanup step: add water in whirlwind and carry out blowing sweeping;
Phase III cleanup step: add water in whirlwind and sand grains carries out blowing sweeping;
Fourth stage cleanup step: be again blown into, in the pipeline to be cleared up, the whirlwind being mixed with water;
Coating step: the whirlwind being blown into contaminated product coating in the pipeline after cleaning, carries out coating problems to inwall.
Wherein, every step particular content can with reference to the content described by above-described embodiment two.
Further, increase can also be optionally selected to add sand dress watch step, the thick wall measurement of pipeline and/or leak source detecting step equally.
Above content is in conjunction with concrete enforcement mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations. For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace.
Claims (16)
1. a nuclear power station pipeline inside uses the method for aerodynamic force cleaning with coating, it is characterised in that, comprise step:
First stage cleanup step: be blown into whirlwind in the pipeline to be cleared up, corrosion product comparatively loose in cleaning pipeline;
Subordinate phase cleanup step: add water in whirlwind and carry out blowing sweeping;
Phase III cleanup step: add water in whirlwind and sand grains carries out blowing sweeping;
Fourth stage cleanup step: be again blown into, in the pipeline to be cleared up, the whirlwind being mixed with water;
Coating step: the whirlwind being blown into contaminated product coating in the pipeline after cleaning, carries out coating problems to inwall.
2. nuclear power station pipeline inside as claimed in claim 1 uses the method for aerodynamic force cleaning and coating, it is characterised in that, in described phase III cleanup step, sand grains used is quartz sand.
3. nuclear power station pipeline inside as claimed in claim 1 uses the method for aerodynamic force cleaning and coating, it is characterised in that, in fourth stage cleanup step, when pipeline derusting grade reaches DSaOr after DSa3 grade, carry out coating step.
4. nuclear power station pipeline inside as claimed in claim 1 uses the method for aerodynamic force cleaning and coating, it is characterised in that, also comprise:
Add sand dress watch step: inspect entrance, outlet and the middle section to be cleared up by random samples, the examined surface of visual inspection.
5. nuclear power station pipeline inside as claimed in claim 4 uses the method for aerodynamic force cleaning and coating, it is characterized in that, described add in sand dress watch step, qualified requirement is for examined showing no-sundries, without grease, free from dust, stainless steel surface is through overpickling and Passivation Treatment, carbon steel piping allows steel surface to have the continuous oxidation film being exposed to because of the short period of time and being formed in air, does not fill and is permitted the floating rust of surface existence.
6. nuclear power station pipeline inside as claimed in claim 1 uses the method for aerodynamic force cleaning and coating, it is characterised in that, also comprise just step and thorough curing schedule admittedly.
7. the inner method using aerodynamic force cleaning and coating of nuclear power station pipeline as claimed in claim 6, it is characterised in that, just consolidate in step described, also comprise:
The thick wall of pipeline is measured: selects multiple point from the pipeline after coating, uses ultrasonic wave detect thickness, judges that whether coating is qualified.
8. nuclear power station pipeline inside as claimed in claim 1 uses the method for aerodynamic force cleaning and coating, it is characterised in that, also comprise:
Leak source detecting step: check whether there is corrosion failure point on pipeline.
9. nuclear power station pipeline inside as claimed in claim 8 uses the method for aerodynamic force cleaning and coating, it is characterised in that, in leak source detecting step, leak source processing scheme is:
Change the pipeline with leak source;
Or the leak source on pipeline is wrapped up.
10. nuclear power station pipeline inside as claimed in claim 9 uses the method for aerodynamic force cleaning and coating, it is characterised in that, described leak source on pipeline is carried out wrapping comprise:
Glass reinforced plastic colligation;
Or metal amendment agent repairing.
11. 1 kinds of pipe interiors use the device of aerodynamic force cleaning and coating, it is characterised in that, comprising:
Whirlwind provides equipment, and in order to provide whirlwind, described whirlwind provides equipment to comprise air compressor machine and gas-holder, and described air compressor machine is connected with gas-holder, and described gas-holder is connected with mechanical arm;
Mechanical arm, described mechanical arm and whirlwind provide equipment connection, and it has at least one charging opening, and described mechanical arm is for being connected with the entrance of pipeline for clearance;
And retrieving arrangement, described retrieving arrangement is for being connected with the outlet of pipeline for clearance, and described retrieving arrangement is at least one, and described retrieving arrangement is for connecting with the outlet of corresponding pipeline for clearance.
12. pipe interiors as claimed in claim 11 use the device of aerodynamic force cleaning and coating, it is characterized in that, described retrieving arrangement is collection box, and described collection box comprises casing, described casing has regenerant entrance and pneumatic outlet, and gas outlet is provided with the first strainer.
13. pipe interiors as claimed in claim 12 use the device of aerodynamic force cleaning and coating, it is characterised in that, the casing of described collection box has liquid exit, and described liquid outlet arranges tow filtrator.
14. pipe interiors as claimed in claim 13 use the device of aerodynamic force cleaning and coating, it is characterised in that, described collection box has relief chamber, is reduced pressure by the mixture entering collection box.
15. pipe interiors as claimed in claim 14 use the device of aerodynamic force cleaning and coating, it is characterised in that, also comprise dust keeper, described dust keeper is located at and reclaims on dress.
16. pipe interiors as claimed in claim 15 use the device of aerodynamic force cleaning and coating, it is characterised in that, described dust keeper comprises frame body and dw, and described frame body is arranged around retrieving arrangement surrounding, and described dw is layered on frame body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410641149.8A CN105642620A (en) | 2014-11-13 | 2014-11-13 | Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410641149.8A CN105642620A (en) | 2014-11-13 | 2014-11-13 | Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force |
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| CN105642620A true CN105642620A (en) | 2016-06-08 |
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| CN201410641149.8A Pending CN105642620A (en) | 2014-11-13 | 2014-11-13 | Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force |
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| CN106001013A (en) * | 2016-06-13 | 2016-10-12 | 厦门日村环保科技有限公司 | Water pipe cleaning process and use method of high-frequency pulse cleaning machine |
| CN109986470A (en) * | 2018-10-11 | 2019-07-09 | 马付林 | A kind of long range surface treatment method of inner wall of steel pipe |
| CN109986471A (en) * | 2018-10-11 | 2019-07-09 | 马付林 | A kind of long range surface treatment of inner wall of steel pipe and coated lining anti-corrosion method |
| CN110318873A (en) * | 2018-03-29 | 2019-10-11 | 宝山钢铁股份有限公司 | A method of eliminating GT hot passage parts deposit |
| CN111521352A (en) * | 2020-05-19 | 2020-08-11 | 岭东核电有限公司 | Nuclear power station unit check valve sealing performance detection and exception handling method |
| CN112090878A (en) * | 2020-09-08 | 2020-12-18 | 陈广萍 | Degreasing and cleaning method for inner wall of high-pressure oxygen pipeline |
| CN113926627A (en) * | 2021-10-16 | 2022-01-14 | 莱芜职业技术学院 | Inside cleaning device of application environmental protection mechanical equipment |
| CN114054263A (en) * | 2020-08-03 | 2022-02-18 | 龚海涛 | Oil applying device for inner wall of welded pipe |
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| CN111521352A (en) * | 2020-05-19 | 2020-08-11 | 岭东核电有限公司 | Nuclear power station unit check valve sealing performance detection and exception handling method |
| CN114054263A (en) * | 2020-08-03 | 2022-02-18 | 龚海涛 | Oil applying device for inner wall of welded pipe |
| CN112090878A (en) * | 2020-09-08 | 2020-12-18 | 陈广萍 | Degreasing and cleaning method for inner wall of high-pressure oxygen pipeline |
| CN113926627A (en) * | 2021-10-16 | 2022-01-14 | 莱芜职业技术学院 | Inside cleaning device of application environmental protection mechanical equipment |
| WO2023241325A1 (en) * | 2022-06-15 | 2023-12-21 | 石家庄铁道大学 | Artificial tornado sharp-dagger composite trenchless multistage pipe cleaning device and pipe cleaning method thereof |
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