CN107859141A - A kind of remodeling method of sewage plant upstream sewage conduct for nuclear power plant - Google Patents
A kind of remodeling method of sewage plant upstream sewage conduct for nuclear power plant Download PDFInfo
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- CN107859141A CN107859141A CN201710945915.3A CN201710945915A CN107859141A CN 107859141 A CN107859141 A CN 107859141A CN 201710945915 A CN201710945915 A CN 201710945915A CN 107859141 A CN107859141 A CN 107859141A
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- pipeline
- internal lining
- lining pipe
- sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
- E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining
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- Life Sciences & Earth Sciences (AREA)
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- Hydrology & Water Resources (AREA)
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Abstract
The invention belongs to the technical field of nuclear power station pipeline transformation, there is provided a kind of remodeling method of sewage plant upstream sewage conduct for nuclear power plant, by first using rubber pneumatic bag to block the upstream and downstream of particular conduit, then discharge the sewage chosen in pipeline section；Then carry out choosing the dredging of pipeline section and preliminary cleaning by the way of water jetting at high pressure, then carry out artificial and vacuum respectively and drag for the dredging and cleaning for realizing pipeline clearly；Followed by by automaticity it is high in peep TV detection means and run in pipeline section is chosen and control the transmission of its captured in real-time and data, to detect the damage situations chosen in pipeline section；Then chosen what cleaning was completed in pipeline section for the default internal lining pipe in specific impaired region, solidified after the internal lining pipe inflation is caused by ultraviolet light and be fixed on to be bonded on the inwall of former pipeline, form the reparation and transformation to former pipeline；Such remodeling method can solve the problems, such as that the difficulty of existing blow-off line reparation and cost are very high.
Description
Technical field
The invention belongs to the technical field of nuclear power station pipeline transformation, more particularly to a kind of sewage plant upstream for nuclear power plant
The remodeling method of sewage conduct.
Background technology
Sewage conduct inside nuclear power station is used to discharge the radioactive wastewater after sanitary sewage and processing.These sewage or
The complex chemical composition of waste water, during blowdown, easily the pipeline to blowdown is caused to corrode or damaged, especially pipeline
Wall and pipeline between junction be easiest to occur damaged or be corroded；So on the one hand then rainwater etc. is easily accessible
Into drainage, very big effluent pressure is caused to drainage, on the other hand, the damage of blow-off line can cause mud to exist
Accumulation on pipeline wall, and then blow-off line is little by little blocked, cause drainage can not meet blowdown requirement；Existing place
Reason mode can only periodically repair maintenance and cleaning, but because the arrangement of pipeline is complicated, the difficulty and cost that it is repaired and cleared up are all
It is very high.
The content of the invention
It is an object of the invention to provide a kind of remodeling method of the sewage plant upstream sewage conduct for nuclear power plant, it is intended to
Solve the problems, such as that difficulty and the cost of existing blow-off line reparation are very high.
The present invention so solves：A kind of remodeling method of sewage plant upstream sewage conduct for nuclear power plant, including
Following steps；
S1, pipe plugging and precipitation, the duct length for choosing particular segment is selected pipeline section, in the upstream of the selected pipeline section
Rubber pneumatic bag is placed in end and downstream simultaneously, then by realizing the closure of the selected pipeline section toward gas injection in rubber pneumatic bag, then
The sewage in the selected pipeline section is discharged by drainage equipment；
S2, pipeline dredging and desilting, first pass through water jetting at high pressure and dredge the selected pipeline section, then carried out after detection emptying
Manually drag for clearly, then vacuum soil pick-up drags for clearly so that the wall of the selected pipeline section is without dirt；
S3, pipeline detection, entered with interior TV detection means of peeping in the selected pipeline section, and from the selected pipeline section
Upstream end to downstream the defects of running back and forth and shooting with video-corder and store selected pipeline section position；
S4, pipeline reparation, it is former pipeline to determine conduit region to be repaired, pre-sets internal lining pipe and photocuring dress
Put, then slowly pull in internal lining pipe in the former pipeline, then compressed air causes internal lining pipe to be fully expanded to close to institute
Former inner-walls of duct is stated, then the time is put into multiple uviol lamps so that internal lining pipe solidifies and is attached at the former inner-walls of duct at equal intervals
On, last flat cut internal lining pipe both ends termination；
S5, repeat step S1~S4, carry out the transformation reparation of another duct section in downstream.
Further, in the step S1, the closure of upstream line is first carried out, then carries out the closure of downstream line, and
The length of the selected pipeline section is less than or equal to 200 meters.
Further, in the step S1, air in the selected pipeline section is completed before the selected pipeline section closure
The detection of quality, and the hydraulic pressure at monitoring upstream closure end in real time after the completion of the selected pipeline section closure.
Further, in the step S2, the water jetting at high pressure is penetrated through the nozzle that several apertures are 0.5~2.5mm
Go out, and the water speed that goes out of the water jetting at high pressure is 300~600m/s.
Further, in the step S2, it is described selected to treat that the mud depth in the selected pipeline section is less than or equal to
The caliber of pipeline section 1/5 when stop the water jetting at high pressure.
Further, in the step S3, the interior TV detection means of peeping includes drive component and is connected to described
Camera assembly on drive component, and for controlling the drive component to creep and control the camera assembly to image and real-time
The control assembly of feedback.
Further, the drive component includes driving dolly and the supporting support being connected on the driving dolly, with
And be connected in the supporting support and the light fixture for illuminating, the control assembly include for data processing console and
It is connected on the driving dolly and for the cable of transmission signal and computational length.
Further, in the step S4, the material of the internal lining pipe includes glass fibre resistant to chemical etching, thermosetting
Property resin and photocuring triggering agent, photocuring triggering agent solidify the thermosetting resin under ultraviolet light.
Further, in the step S4, the internal lining pipe fits in the half structure bushing pipe of former pipeline for part.
Further, the wall thickness calculation formula of the half structure bushing pipe is；
In formula：T --- liner thickness of pipe wall (mm)；
P --- tube top position groundwater pressure (MPa)；
C --- the ovality reduction factor；
The ovality (%) of q --- former pipeline, Insertion method should take the ovality of internal lining pipe；As former pipeline ovality can not be surveyed
Amount or internal lining pipe ovality are unknown, take 2%；
DE--- the mean inside diameter (mm) of former pipeline；
Dmin--- the minimum diameter (mm) of former pipeline；
Dmax--- the maximum inner diameter (mm) of former pipeline；
N --- safety coefficient, it is 2.0 to recommend value；
EL--- the long-run elasticity modulus (MPa) of internal lining pipe, take out factory's numerical value or take the 50% of short-term modulus；
K --- circumference supporting rate, it is 7.0 to recommend value；
μ --- Poisson's ratio, in-situ solidifying method internal lining pipe take 0.3, and polythene material internal lining pipe takes 0.45.
Further, when internal lining pipe ovality q percentage is not zero, the wall thickness t of internal lining pipe, which is removed, should meet formula (1)
Outside, and it should be greater than the result of calculation of q in following formula；
In formula：σL--- the long-term bend strength (MPa) of liner tubing, with reference to Default Value；
The standard size ratio (DO/t) of SDR --- pipeline.
Further, in the step S4, the internal lining pipe not rely on former pipeline completely, and independently bear internal pressure and
The structural bushing pipe of external pressure.
Further, the wall thickness calculation formula of the structural bushing pipe is；
In formula：qt--- the total external pressure of pipeline (MPa)；
Rw--- the water buoyancy factor, minimum take 0.67；
Hw--- tube top above level of ground water height (m)；
H --- tube top thickness of earth covering (m)；
γ --- severe (kN/m3)；
WS--- dynamic load (MPa)；
B ' --- resilient support coefficient；
ES' --- pipe side soil overall deformation modulus (MPa).
EL--- the long-run elasticity modulus (MPa) of internal lining pipe, take out factory's numerical value or take the 50% of short-term modulus；
N --- safety coefficient, it is 2.0 to recommend value；
C --- the ovality reduction factor；
K --- circumference supporting rate, it is 7.0 to recommend value.
DO--internal lining pipe external diameter (mm)；
Further, the ratio of conveyance capacity of the conveyance capacity of pipeline with repairing preceding pipeline should be pressed after being repaired during flowing full
Row formula is calculated；
In formula：B --- conveyance capacity ratio before and after pipeline rehabilitation；
ne--- the coefficient of roughness of former pipeline
nl--- the coefficient of roughness of internal lining pipe.
DI--- internal diameter of the pipeline after reparation；
DE--- former internal diameter of the pipeline；
Further, in the step S4, before the internal lining pipe is pulled in the former pipeline, in the pipeline
Pad film is laid, the pad film is placed in the bottom of the former pipeline, and the week of the former pipeline of the pad film covering more than 1/3
It is long.
Further, in the step S4, when the internal lining pipe is pulled in the former pipeline, pull in speed and be less than
5m/min, and the pulling force pulled in is less than 122KN.
Further, in the step S4, in the liner tube swelling, the air pressure being filled with is first with 10mbar/
Min speed uniformly increases to 100mbar, then makes to be up to 50mba/min speed from 100mbar increasings to 150mba
Obtain the internal lining pipe fully to expand, then air pressure is slowly raised to 450mbar's and at least keeps 10min.
Further, in the step S4, after the internal lining pipe fully expands, multiple uviol lamps will be connected with rapidly
Lamp bracket be put into the internal lining pipe, and set the time interval that multiple uviol lamps are turned on light successively.
Further, the lamp bracket is slowly pulled in and is linearly arranged on the axis direction of the internal lining pipe, and institute
State during lamp bracket pulls in, the internal lining pipe is brought into close contact with the former inner-walls of duct under pressure all the time.
Further, the two neighboring uviol lamp is turned on light at intervals of 60s, and the gait of march of the lamp bracket is 70cm-
80cm/min。
Provided by the present invention for the relatively existing reparation side of remodeling method of the sewage plant upstream sewage conduct of nuclear power plant
The technique effect that method has is：By using the closure to former pipeline of rubber pneumatic bag, pipeline to be rebuilt can be separated into
Multiple single duct sections, and the blowdown use for not influenceing surrounding resident is so blocked, while it is easy and effective simultaneously to block mode
It can dredge with Reusability and the process of desilting is more simple and efficient, while security is more preferable, treats that former pipeline cleaning is completed
Afterwards, carry out shooting with video-corder detection by peeping TV detection means in automation, and then the more efficient while right of detection can be caused
Answer the determination of the defects of different position more accurate；The reparation of former pipe section coordinates light curring unit to realize using internal lining pipe
Cover type reparation, its repair mode automaticity is high, and remediation efficiency is high, while saves substantial amounts of artificial and material cost,
In addition the anticorrosion effect of internal lining pipe is good, and then more durable after former pipeline rehabilitation.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the flow chart of remodeling method provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
It refer to shown in accompanying drawing 1, in embodiments of the present invention, there is provided a kind of sewage plant upstream sewage pipe for nuclear power plant
The remodeling method in road, comprises the following steps；
S1, pipe plugging and precipitation, the duct length for choosing particular segment is selected pipeline section, in the upstream of the selected pipeline section
Rubber pneumatic bag is placed in end and downstream simultaneously, then by realizing the closure of the selected pipeline section toward gas injection in rubber pneumatic bag, then
The sewage in the selected pipeline section is discharged by drainage equipment；
In this step, before blocking operation, investigation grasp, root should be carried out to the running situation and flow information of water for selecting pipeline section
Factually flow intensity selects suitable duct length in border pipe condition and pipeline, avoids the upstream caused by after blocking time is long
Hydraulic pressure caused by ponding is caused necessarily to threaten to downstream workmen, therefore the distance blocked is carried out according to actual state, foundation
First upstream, each water inlet of the well that crosses are blocked, and the well lid that closure is tackled in the road section scope to be constructed before is opened simultaneously
Place guardrail or eye-catching mark.
The selection of the selected length of pipe section is preferably that length of 3~4 well locations is constructed, herein between well and well away from
From 50 meters for standard, certainly, if section lack of standardization, to be limited no more than 200 meters.
In the present embodiment, the rubber pneumatic bag is preferably inflatable airbag, and the rubber pneumatic bag is preferably columned
Air bag, so it is also beneficial to avoid the depth displacement of part well location and cause draining incomplete, while the rubber pneumatic bag peace of inflatable
Full property is more preferable, while with recycling, can avoid the waste of maintenance cost.
Simultaneously after the completion of closure, row's drop should be carried out to selecting the water level in pipeline section in time, using drainage equipment, be preferably
Driving-mud Pump, the water in selected pipeline section is discharged in the downstream line of closure isolation.Simultaneously in some blow-off line utilization rates
High region, can also be by using high-power sludge pump, across choosing in order to ensure that the construction of pipeline does not influence the use of blowdown
Fixed tube section, upstream and downstream is linked up, and upstream drainage is discharged in the pipe network of downstream.
At the same time, it is necessary to judge in advance selected pipeline section, water level in elected fixed tube section before the closure of selected pipeline section
More than the 30% of caliber, then need to carry out closure to selected pipeline section to draw water, follow-up step is directly carried out if less than 30%.And
And need to carry out toxic and harmful gas detection to selected pipeline section before being blocked；Its detection mode is to open selected pipeline section
Inspection well cover, after slightly divulging information, using H2S detector, carried out to selecting the concentration of poisonous explosion hazard gases of inner tube segment
Measurement, confirmation are not above defined standard and can carry out next step operation later.Certainly, if toxic gas is exceeded, this is needed
To use ventilation equipment to carry out air blast ventilation, after reaffirming safety, lower well operations can be started.
The dredging and desilting of pipeline, first pass through water jetting at high pressure and dredge the selected pipeline section, then carry out people after detection emptying
Work is dragged for clearly, and then vacuum soil pick-up drags for clearly so that the wall of the selected pipeline section is without dirt；
In this step, the process of pipe-dredging carries out selected pipeline section desilting using the water jetting at high pressure technology of water jetting at high pressure car
Dredging, it can effectively remove the deposition in selected pipeline section and hinder thing, water jetting at high pressure cleaning technique, be to pass through ordinary tap water
Pressurize hundreds of or even thousands of atmospheric pressure, then by multiple special nozzles, the aperture of each nozzle is preferably 0.5-2.5
Millimeter, with high speed, current that the one or more strands of energy heights of ejection are concentrated, herein the speed of current be preferably
300-600 meter per seconds, the water jet is with very strong impact kinetic energy, and continuous action is in selected pipeline section surface to be cleaned, so that dirty
Thing is peeled off；Simultaneously and by the thrust of current, it is eliminated after the dirty thing in selected pipeline section is held out into selected pipeline section, reaches cleaning mesh
's.
After the completion of water jetting at high pressure implementation, it is necessary to detect when selecting the deposit for still having volume larger in pipeline section
In the case that air quality is qualified in selected pipeline section, arrangement is manually dragged for clearly；As for the mud portion that can not finally drag for clearly then
Dragged for clearly using vacuum cleaning truck, so as to finally realize selected pipeline section internal face cleaning, the situation without fouling.
During vacuum soil pick-up, using new environmental sanitation vacuum cleaning truck, the vacuum cleaning truck be collection, transfer,
Cleaning transport sludge, sewage, avoid the Novel environmental-sanitation vehicle of secondary pollution, suction-type sewer scavenger can self-suction discharge, operating rate is fast, capacity
Greatly, convenient transportation, suitable for collecting the liquid substances such as transport excrement, mud, crude oil.
S3, pipeline detection, entered with interior TV detection means of peeping in the selected pipeline section, and from the selected pipeline section
Upstream end to downstream the defects of running back and forth and shooting with video-corder and store selected pipeline section position；
In this step, the interior shooting group for peeping TV detection means and including drive component and being connected on the drive component
Part, and for controlling the drive component to creep and control the control assembly of the camera assembly shooting and Real-time Feedback.The drive
Dynamic component includes driving dolly and the supporting support being connected on the driving dolly, and is connected in the supporting support and is used for
The light fixture of illumination, the control assembly include being used for the console of data processing and are connected on the driving dolly and are used to transmit letter
Number and computational length cable.The camera assembly can carry out image processing, and the control assembly can be with the rotation of recording camera
And positioning.Image record and copy editor's function with high quality.According to different tube diameters, the interior of different model can be selected to peep
TV detection means.The situation in pipeline can be covered all at one glance by it.、
During detection, first by peeped in remote control TV detection means inspect camera lens be sent into it is cleaned
In selected pipeline section, by the situation simultaneous transmission in selected pipeline section to television monitor screen and in computer.The special record of operating personnel
Whole detection process can one by one be checked and record into digital image file by system to be stored in computer hard disc, such as process in detection
In when having anomaly generation, the operable equipment rotation of operating personnel, check defect point details in detail.For ease of the later stage to inspecting
Interpretation of result, when peeping the detection of TV detection means inside, abnormity point will stop a moment, to obtain clearly image；Wherein for
The defects of pipe leakage, pipeline branch pipe housed joint etc. may influence pipeline flow increase need to carry out record in detail and be operated in detection
Equipment looks round.Peep inside TV detection means detection terminate after, caused file (such as image in all detection process
File etc.) file format that can be browsed and play on client computer is converted into, and it is carved into CD for users to use.
S4, pipeline reparation, it is former pipeline to determine conduit region to be repaired, pre-sets internal lining pipe and photocuring dress
Put, then slowly pull in internal lining pipe in the former pipeline, then compressed air causes internal lining pipe to be fully expanded to close to institute
Former inner-walls of duct is stated, then the time is put into multiple uviol lamps so that internal lining pipe solidifies and is attached at the former inner-walls of duct at equal intervals
On, last flat cut internal lining pipe both ends termination；
In this step, cured in place technique can be selected according to the situation of former pipeline and the actual demand of owner,
Curing process includes bushing pipe being designed to structural bushing pipe, half structure bushing pipe and unstructuredness bushing pipe.Wherein, structural bushing pipe
Do not rely on former pipeline completely, can independently bear internal pressure and external pressure；Half structure lining pipe, can partly to rely on former pipeline
Independently to bear internal pressure and ground water pressure；Unstructuredness lining pipe relies on former pipeline and bears external pressure independently to bear internal pressure.
Meanwhile selected for using for internal lining pipe, in the present embodiment, the main material of the internal lining pipe is ECR (E-Glass
Of Chemical Resistance, glass resistant to chemical etching) glass fibre, thermosetting resin and photocuring triggering agent.Should
ECR glass fibres are based on E glass ingredients, and it adds 1-4% TiO2 and ZnO, and is free of B2O3 and F2, and it is produced
Environmental protection is good.The decay resistance of ECR glass fibres is optimal in all glass fibres, is the head of composite in severe rugged environment
Choosing, is mainly used in environmental protection equipment, chemical storage tank, ships and light boats, chemical pipeline, desulfurizing tower and electric equipment etc..In internal lining pipe
Thermosetting resin is unsaturated polyester (UP) (UP), and it has good corrosion resistance.Photon triggering agent is added in synthetic resin,
And there is reaction only for the irradiation of ultraviolet light.The triggering agent of these photons can produce group under conditions of ultraviolet light,
So as to produce trigger action to polymerization process.That is, polyester or polyvinyl ester chain-cluster are able to and chain present in resin
Styrene interconnection in cluster, result are to form a kind of resin matrices of solidification.
In the present embodiment, the initial elastic modulus after glass fibre inner lining material solidification is and common up to 12000MPa
The modulus of elasticity of polythene material pipe is 800MPa, just corresponds to the 1/15 of glass fibre inner lining material.
When internal lining pipe is constructed, preferably carried out between two well locations, the drawing of internal lining pipe is first determined according to field condition
Enter direction, internal lining pipe is prevented in the wooden case of closing, while ultraviolet light solidification car is put in place, then set up sunshade account
Paulin so that the velaria blocks the wooden case and well location of the internal lining pipe, then installs leading block and by positioned at pipe ends
Internal lining pipe, which is set, pricks head, and is pricking cephalic par both ends binding waterstop.
Then, internal lining pipe is slowly pulled in former pipeline, pad film should be laid in former pipeline before pulling in internal lining pipe,
Pad film should be placed in former duct bottom, and should cover the pipeline girth more than 1/3, and the purpose for laying pad film is to reduce internal lining pipe to pull in
During frictional force and avoid the scuffing to internal lining pipe.Internal lining pipe should be along the pad film at pipeline bottom by impregnating resin when pulling in
Bushing pipe is steady, it is smooth, slowly pull in former pipeline, pull in speed and cannot be greater than 5m/min, pulling force cannot be greater than 122KN.This
Sample can ensure that arrangement of the internal lining pipe in former pipeline is more uniform.
After internal lining pipe pulls in, the abundant expanse of internal lining pipe is close to former inner-walls of duct by compressed air, pressure with
10mbar/min speed with increasing to 100mbar, then be up to 50mba/min speed by pressure from
100mbar, which increases to 150mba, causes internal lining pipe fully to expand, then pressure is slowly raised into 450mbar operating pressure and at least protected
Hold 10min.So allow internal lining pipe fully and equably expand.
Then, stopping inflation, the bundle head close to ultraviolet light solidification car one end is opened, rapidly by pair of 8 1000W ultraviolet lights
Lamp bracket, which is put into, to be pricked in head, first opens first ultraviolet lamp on lamp bracket, second is opened again behind certain lighting time interval
Ultraviolet lamp on individual lamp bracket, interval time of turning on light herein is preferably 60s.
Then lamp bracket is pulled in internal lining pipe, the lamp bracket pull in speed according to the caliber, wall thickness and lamp bracket of former pipeline come
Combination determine, lamp bracket pull in speed should solidification initiating terminal preceding 0.5m in the range of control predetermined speed half, then
Predetermined speed is raised to, the half of predetermined speed is reduced to again until terminal when to solidification destination terminal 1.0m.It can so cause
The solidification process of internal lining pipe is more uniform.Herein, the predetermined speed of the lamp bracket is preferably 70cm-80cm/min.
In addition, pressure should be kept internal lining pipe is in close contact with former pipeline inside internal lining pipe in the curing process.
After the completion of internal lining pipe solidification, overpressure should be slowly reduced to atmospheric pressure.Dismounting station head after solidification, pull out bottom
Film, liner pipe end should cut smooth., it is necessary to ensure that the liner pipe surface after repairing is smooth, without obvious pleat in whole process
Wrinkle, projection phenomenon；Liner thickness of pipe wall, intensity meet design requirement；Table does not have leak, infiltration sign inside internal lining pipe；Internal lining pipe
Meet the requirement of closed-water test.
S5, repeat step S1~S4, carry out the transformation reparation of another duct section in downstream.Until transformation in need pipeline
All repair and complete.
Specifically, in embodiments of the present invention, according to the actual needs, it is half that can select the structure design of internal lining pipe
Structure internal lining pipe, the internal lining pipe of half structure design depend on the structure of former pipeline, only need to bear within projected life
Outside hydrostatic pressure, and outside soil pressure and dynamic load are still by former pipeline support.
The wall thickness of specific unstructuredness internal lining pipe is preferably that following formula is calculated：
In formula：T --- liner thickness of pipe wall (mm)；
P --- tube top position groundwater pressure (MPa)；
C --- the ovality reduction factor；
The ovality (%) of q --- former pipeline, Insertion method should take the ovality of internal lining pipe；As former pipeline ovality can not be surveyed
Amount or internal lining pipe ovality are unknown, take 2%；
DE--- the mean inside diameter (mm) of former pipeline；
Dmin--- the minimum diameter (mm) of former pipeline；
Dmax--- the maximum inner diameter (mm) of former pipeline；
N --- safety coefficient, it is 2.0 to recommend value；
EL--- the long-run elasticity modulus (MPa) of internal lining pipe, take out factory's numerical value or take the 50% of short-term modulus；
K --- circumference supporting rate, it is 7.0 to recommend value；
μ --- Poisson's ratio, in-situ solidifying method internal lining pipe take 0.3, and polythene material internal lining pipe takes 0.45.
When internal lining pipe ovality q percentage is not zero, the wall thickness t of internal lining pipe should be greater than in addition to it should meet formula (1)
Q result of calculation in following formula：
In formula：σL--- the long-term bend strength (MPa) of liner tubing, with reference to Default Value；
The standard size ratio (DO/t) of SDR --- pipeline.
Specifically, in embodiments of the present invention, when need by internal lining pipe set be in structural internal lining pipe when, this is structural to set
The internal lining pipe of meter has independently bears the property of external hydrostatic water pressure power, soil pressure and dynamic loading independent of former pipeline configuration
Energy.
The wall thickness of specific structural internal lining pipe is preferably that following formula is calculated, and this calculation formula should meet half hitch
The requirement of structure reparation：
In formula：qt--- the total external pressure of pipeline (MPa)；
Rw--- the water buoyancy factor, minimum take 0.67；
Hw--- tube top above level of ground water height (m)；
H --- tube top thickness of earth covering (m)；
γ --- severe (kN/m3)；
WS--- dynamic load (MPa)；
B ' --- resilient support coefficient；
ES' --- pipe side soil overall deformation modulus (MPa).
EL--- the long-run elasticity modulus (MPa) of internal lining pipe, take out factory's numerical value or take the 50% of short-term modulus；
N --- safety coefficient, it is 2.0 to recommend value；
C --- the ovality reduction factor；
K --- circumference supporting rate, it is 7.0 to recommend value.
DO--internal lining pipe external diameter (mm)；
Specifically, in embodiments of the present invention, excessively stream of the conveyance capacity of pipeline with repairing preceding pipeline after being repaired during flowing full
The ratio of ability should be calculated by following equation；
In formula：B --- conveyance capacity ratio before and after pipeline rehabilitation；
ne--- the coefficient of roughness of former pipeline
nl--- the coefficient of roughness of internal lining pipe.
DI--- internal diameter of the pipeline after reparation；
DE--- former internal diameter of the pipeline；
By the remodeling method of the above-mentioned sewage plant upstream sewage conduct for nuclear power plant, by using rubber pneumatic bag
Closure to former pipeline, pipeline to be rebuilt can be separated into multiple single duct sections, and so block and do not influence week
Enclose resident blowdown use, while block mode it is easy and effective and can with Reusability, dredge and desilting process it is more simple
It is single and efficient, while security is more preferable, after the completion for the treatment of former pipeline cleaning, is taken the photograph by peeping TV detection means in automation
Record detection, and then the more efficient of detection can be caused, while the determination for corresponding to the defects of different position is more accurate；Original pipe
The reparation of road part coordinates light curring unit to realize cover type reparation using internal lining pipe, and its repair mode automaticity is high, repaiies
Multiple efficiency high, while substantial amounts of artificial and material cost is saved, the anticorrosion effect of internal lining pipe is good in addition, and then former pipeline is repaiied
It is more durable after multiple.
And remodeling method as using can effectively improve the quality of engineering；Pipe lining repair materials meet country
With industry and code requirement, suitable for concrete structure pipeline, can be secured entirely on concrete structure, to pipe crack shape
Into bridge joint and intensity it is reliable, pipe lining material is a kind of macromolecule resin material, stable performance, configured through science, even in
Under adverse circumstances, the lasting sealing property of product safety, prominent resistance to chemical corrosion and excellent wearability also can guarantee that
Can, service life length；Good tear resistance and good thermal deformation resistant performance, can adapt to secondary deformation, shock resistance is strong
Spend high, outstanding anti-shearing force；Excellent compressive property and high density anti-permeability, anti-seepage effect is notable, inner lining surface light
It is sliding, drainability can be improved.
Simultaneously can be with accelerating construction progress, it is ensured that the duration of a project；Sewage conduct improvement project pipeline no-dig technique liner reparation
Construction technique, reduce and the excavation of road do not removed to conduit upper component, does not excavate the reparation for protecting superstructure,
Reduce the trenchless rehabilitation time.From the processing of inner lining material, the preparation of job site, ultraviolet curing, secondary detection only need about 4
Hours.No-dig technique is that construction creates good condition, greatly accelerates construction speed.
Further, it is also possible to which environmental protection, saves resource, construction cost, remarkable in economical benefits are reduced；Sewage conduct transforms work
Cheng Guandao no-dig technique liner repairing construction new technologies, reduce and the excavation of road are not removed to conduit upper component, not excavated
The reparation of superstructure is protected, rubbish is not produced, does not block the traffic.Reduce trenchless rehabilitation expense, remarkable in economical benefits.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (20)
- A kind of 1. remodeling method of sewage plant upstream sewage conduct for nuclear power plant, it is characterised in that：Comprise the following steps；S1, pipe plugging and precipitation, the duct length for choosing particular segment are selected pipeline section, in the upstream end of the selected pipeline section and Rubber pneumatic bag is placed in downstream simultaneously, then by realizing the closure of the selected pipeline section toward gas injection in rubber pneumatic bag, then passes through Drainage equipment discharges the sewage in the selected pipeline section；S2, pipeline dredging and desilting, first pass through water jetting at high pressure and dredge the selected pipeline section, then carried out after detection emptying artificial Drag for clearly, then vacuum soil pick-up drags for clearly so that the wall of the selected pipeline section is without dirt；S3, pipeline detection, entered with interior TV detection means of peeping in the selected pipeline section, and from the upper of the selected pipeline section The defects of trip end to downstream is run and shoots with video-corder and store the selected pipeline section back and forth position；S4, pipeline reparation, it is former pipeline to determine conduit region to be repaired, pre-sets internal lining pipe and light curring unit, so Internal lining pipe is slowly pulled in afterwards in the former pipeline, then compressed air causes internal lining pipe to be fully expanded to close to the former pipe Road inwall, then the time is put into multiple uviol lamps so that internal lining pipe solidifies and is attached on the former inner-walls of duct, most at equal intervals Flat cut internal lining pipe both ends termination afterwards；S5, repeat step S1~S4, carry out the transformation reparation of another duct section in downstream.
- 2. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S1, the closure of upstream line is first carried out, then carries out the closure of downstream line, and the length of the selected pipeline section is small In or equal to 200 meters.
- 3. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S1, the detection of air quality in the selected pipeline section is completed before the selected pipeline section closure, and described Monitoring upstream blocks the hydraulic pressure at end in real time after the completion of selected pipeline section closure.
- 4. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S2, the water jetting at high pressure projects through the nozzle that several apertures are 0.5~2.5mm, and the water jetting at high pressure It is 300~600m/s to go out water speed.
- 5. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S2, stop when the mud depth in the selected pipeline section is less than or equal to the 1/5 of the caliber of the selected pipeline section The only water jetting at high pressure.
- 6. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S3, the interior shooting group for peeping TV detection means and including drive component and being connected on the drive component Part, and for controlling the drive component to creep and control the control assembly of the camera assembly shooting and Real-time Feedback.
- 7. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 6, it is characterised in that：Institute Stating drive component includes driving dolly and the supporting support being connected on the driving dolly, and is connected to the supporting support The light fixture illuminated is gone up and is used for, the control assembly includes being used for the console of data processing and is connected to the driving dolly And for the cable of transmission signal and computational length.
- 8. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S4, the material of the internal lining pipe includes glass fibre resistant to chemical etching, thermosetting resin and photocuring triggering Agent, the photocuring triggering agent solidify the thermosetting resin under ultraviolet light.
- 9. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that：In In the step S4, the internal lining pipe fits in the half structure bushing pipe of the former pipeline for part.
- 10. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 9, it is characterised in that： The wall thickness calculation formula of the half structure bushing pipe is；OrIn formula：T --- liner thickness of pipe wall (mm)；P --- tube top position groundwater pressure (MPa)；C --- the ovality reduction factor；The ovality (%) of q --- former pipeline, Insertion method should take the ovality of internal lining pipe；Can not measure such as former pipeline ovality or Internal lining pipe ovality is unknown, takes 2%；DE--- the mean inside diameter (mm) of former pipeline；Dmin--- the minimum diameter (mm) of former pipeline；Dmax--- the maximum inner diameter (mm) of former pipeline；N --- safety coefficient, it is 2.0 to recommend value；EL--- the long-run elasticity modulus (MPa) of internal lining pipe, take out factory's numerical value or take the 50% of short-term modulus；K --- circumference supporting rate, it is 7.0 to recommend value；μ --- Poisson's ratio, in-situ solidifying method internal lining pipe take 0.3, and polythene material internal lining pipe takes 0.45.
- 11. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 10, it is characterised in that： When internal lining pipe ovality q percentage is not zero, the wall thickness t of internal lining pipe should be greater than q in following formula in addition to it should meet formula (1) Result of calculation；In formula：σL--- the long-term bend strength (MPa) of liner tubing, with reference to Default Value；The standard size ratio (DO/t) of SDR --- pipeline.
- 12. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that： In the step S4, the internal lining pipe independently bears the structural bushing pipe of internal pressure and external pressure not rely on former pipeline completely.
- 13. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 12, it is characterised in that： The wall thickness calculation formula of the structural bushing pipe is；In formula：qt--- the total external pressure of pipeline (MPa)；Rw--- the water buoyancy factor, minimum take 0.67；Hw--- tube top above level of ground water height (m)；H --- tube top thickness of earth covering (m)；γ --- severe (kN/m3)；WS--- dynamic load (MPa)；B ' --- resilient support coefficient；ES' --- pipe side soil overall deformation modulus (MPa).EL--- the long-run elasticity modulus (MPa) of internal lining pipe, take out factory's numerical value or take the 50% of short-term modulus；N --- safety coefficient, it is 2.0 to recommend value；C --- the ovality reduction factor；K --- circumference supporting rate, it is 7.0 to recommend value.DO--internal lining pipe external diameter (mm).
- 14. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that： The ratio of conveyance capacity of the conveyance capacity of pipeline with repairing preceding pipeline should be calculated by following equation after being repaired during flowing full；In formula：B --- conveyance capacity ratio before and after pipeline rehabilitation；ne--- the coefficient of roughness of former pipelinenl--- the coefficient of roughness of internal lining pipe.DI--- internal diameter of the pipeline after reparation；DE--- former internal diameter of the pipeline.
- 15. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that： In the step S4, before the internal lining pipe is pulled in the former pipeline, pad film, the pad are laid in the former pipeline Film is placed in the bottom of the former pipeline, and the girth of the former pipeline of the pad film covering more than 1/3.
- 16. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that： In the step S4, when the internal lining pipe is pulled in the former pipeline, pull in speed and be less than 5m/min, and the drawing pulled in Power is less than 122KN.
- 17. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that： In the step S4, in the liner tube swelling, the air pressure being filled with first uniformly is increased with 10mbar/min speed To 100mbar, then make it that the internal lining pipe is abundant to 150mba from 100mbar increasings to be up to 50mba/min speed Expansion, then air pressure is slowly raised to 450mbar's and at least keeps 10min.
- 18. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 1, it is characterised in that： In the step S4, after the internal lining pipe fully expands, the lamp bracket for being connected with multiple uviol lamps is put into rapidly described In internal lining pipe, and set the time interval that multiple uviol lamps are turned on light successively.
- 19. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 18, it is characterised in that： The lamp bracket is slowly pulled in and is linearly arranged on the axis direction of the internal lining pipe, and the process that the lamp bracket pulls in In, the internal lining pipe is brought into close contact with the former inner-walls of duct under pressure all the time.
- 20. it is used for the remodeling method of the sewage plant upstream sewage conduct of nuclear power plant as claimed in claim 19, it is characterised in that： The two neighboring uviol lamp is turned on light at intervals of 60s, and the gait of march of the lamp bracket is 70cm-80cm/min.
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| CN108597631A (en) * | 2018-04-27 | 2018-09-28 | 三门核电有限公司 | A kind of water source partition method of nuclear power plant's Coolant Pump |
| CN109237197A (en) * | 2018-11-12 | 2019-01-18 | 上海辉拓市政工程有限公司 | A kind of reinforcement and repair method based on ultraviolet light solidification pipeline |
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| CN110185133A (en) * | 2019-05-05 | 2019-08-30 | 上海信立生态环境工程有限公司 | A kind of method for cleaning of sewage conduct |
| CN111926907A (en) * | 2020-06-28 | 2020-11-13 | 宁波宏川环境科技有限公司 | Pipeline dredging and dredging method |
| CN112524390A (en) * | 2019-09-17 | 2021-03-19 | 浙江长兴市政建设有限公司 | Municipal pipeline UV lining method in-situ curing repair construction method |
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