CN112610798A - Method for calculating length of lining pipe joint for repairing and updating water supply and drainage pipeline - Google Patents

Method for calculating length of lining pipe joint for repairing and updating water supply and drainage pipeline Download PDF

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Publication number
CN112610798A
CN112610798A CN202011383004.4A CN202011383004A CN112610798A CN 112610798 A CN112610798 A CN 112610798A CN 202011383004 A CN202011383004 A CN 202011383004A CN 112610798 A CN112610798 A CN 112610798A
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pipe
water supply
length
drainage pipeline
alpha
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CN112610798B (en
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姜振波
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/18—Appliances for use in repairing pipes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method for calculating the length of a lining pipe joint for repairing and updating a water supply and drainage pipeline, which is characterized by comprising the following steps of: the method comprises the following steps: s1: finding the center of the pipe orifice, S2: erecting a laser level, S3: data measurement, S4: calculating deflection angle, S5: selecting the length of a pipe section; the method obtains the length of each section of the corresponding liner pipe joint, thereby finishing the structural lining of the water supply and drainage pipeline by centrifugally pouring the glass steel pipe, reducing the influence of the straightness difference on the repair and the update of the water supply and drainage pipeline and playing a role in improving the practical performance of the water supply and drainage pipeline.

Description

Method for calculating length of lining pipe joint for repairing and updating water supply and drainage pipeline
Technical Field
The invention relates to a technology for repairing and updating a lining of a water supply and drainage pipeline by using a centrifugal pouring glass steel pipe, in particular to a method for calculating the length of a lining pipe joint for repairing the water supply and drainage pipeline.
Background
The straightness of the water supply and drainage pipeline is deteriorated in the long-term use process, and large angle deviation can be generated at some points. In order to repair aged water supply and drainage pipelines, an old pipeline can be repaired and updated by adopting a lining pipe technology, and inconvenience and even construction risks are caused by the phenomenon that the lining pipe is difficult to pass through the old pipeline and even is blocked in the old pipeline by adopting the lining pipe repairing technology. The centrifugal pouring glass steel tube adopts a flexible interface, so that the problems can be solved by designing the length of the lining tube joint under the condition that the original old pipeline is bent and deformed to a certain degree; however, before construction, the whole old pipeline must be measured, the deformation of the pipeline is known, and the deformation is used as a basis for design, so that it is very important to design a method for calculating the length of the lining pipe joint for repairing and updating the water supply and drainage pipeline.
Disclosure of Invention
The invention provides a method for calculating the length of a lining pipe joint for repairing a water supply and drainage pipeline, which is used for obtaining the length of each corresponding pipe joint, thereby completing the structural lining of the water supply and drainage pipeline by centrifugally pouring a glass steel pipe, reducing the influence of straightness difference on the repair and update of the water supply and drainage pipeline and playing a role in improving the practical performance of the water supply and drainage pipeline.
In order to solve the technical problem, the invention provides a method for calculating the length of a lining pipe joint for repairing a water supply and drainage pipeline, which is characterized by comprising the following steps of: the method comprises the following steps:
s1: finding the center of the pipe opening: selecting a cross ruler with scales to measure the central position of the outlet pipeline at the pipe orifice of the water supply and drainage pipeline;
s2: erecting a laser level: aligning the center of a cross ruler to the center of the pipe orifice of the pipeline, erecting a laser level to align the light-emitting point of the laser level to the center of the cross ruler, and irradiating the laser level to the inside of the pipeline along the center of the pipe orifice of the pipeline;
s3: and (3) data measurement: uniformly dividing the water supply and drainage pipeline into n sections according to the integral length L of the water supply and drainage pipeline, enabling a laser level instrument irradiation point to face the center of a cross ruler after the length of S is advanced to the interior of the water supply and drainage pipeline along a pipe opening, and measuring the distance between the pipe bottom and the horizontal edge of the pipeline at each section according to the center position of the cross ruler, wherein S is L/n;
s4: calculating a deflection angle: calculating the vertical deflection angle alpha of each segment according to the data measured in the step S3 by using a formula I and a formula II respectivelyynAnd horizontal deflection angle alphaxnAnd will be alphaynAnd alphaxnThe larger one is taken as the deflection angle alphan；
S5: selecting the length of the pipe section: the deflection angle α calculated in step S4nWhen compared with the maximum allowable deflection angle of the lining pipe, when the angle is alphanWhen the maximum allowable deflection angle is smaller than the maximum allowable deflection angle, the length L of the pipe joint of the lining pipe is takennIs 6m, when α isnIf the maximum allowable deflection angle is larger, the angle is alphanCalculating in each segment by using a formula IIIMaximum allowable pipe section length LmThen according to the maximum allowable pipe section length LmSelecting length L of corresponding lining pipe section integer valuenSaid L isnLess than Lm。
Further: the first formula in step S4 is: alpha is alphayn＝arctan((Yn-Yn-1) S); the second formula in step S4 is: alpha is alphaxn＝arctan((Xn-Xn-1) S); wherein Y isnAnd Yn-1The offset distances of the vertical direction of the nth section and the nth-1 section relative to the center of the tube are respectively; xnAnd Xn-1The offset distances of the horizontal direction at the nth section and the nth-1 section relative to the center of the tube are respectively; s is the distance traveled before each measurement.
And further: the maximum allowable deflection angle in the step S5 is 1 degree or 0.5 degree; when the pipe diameter DN of the water supply and drainage pipeline is greater than or equal to 900mm and less than or equal to 1800mm, the maximum allowable deflection angle is selected to be 1 degree; when the pipe diameter DN of the water supply and drainage pipeline is more than 1800mm, the maximum allowable deflection angle is selected to be 0.5 degree.
And further: the formula three in step S5 is: tan α ═ epsilon/1.75 × (L)m/D), i.e. Lm(1.75 × D × tan α)/∈; wherein epsilon is the minimum limit strain of the pipeline, namely 0.5 percent; l ismIs the maximum allowable pipe section length; d is the outer diameter of the lining pipe; alpha is a deflection angle, i.e. alphan。
And further: in step S3, when the pipe is irradiated directly onto the inner wall of the water supply and drainage pipeline or is too close to the pipe wall due to the laser level irradiation point with a large curvature, the center of the pipe needs to be found again at the previous measurement position by using the cross ruler with the scale, and the laser level is erected to continue to irradiate and measure the pipe along the center of the position.
After the structure is adopted, the method obtains the corresponding length of each section of pipe joint, thereby utilizing the centrifugal pouring of the glass steel pipe to complete the structural lining of the water supply and drainage pipeline, reducing the influence of poor straightness on the repair and the update of the water supply and drainage pipeline and playing a role in increasing the practical performance of the water supply and drainage pipeline.
Detailed Description
The invention provides a method for calculating the length of a lining pipe joint for repairing and updating a water supply and drainage pipeline, which comprises the following steps:
s1: finding the center of the pipe opening: selecting a cross ruler with scales to measure the central position of the outlet pipeline at the pipe orifice of the water supply and drainage pipeline;
s2: erecting a laser level: aligning the center of a cross ruler to the center of the pipe orifice of the pipeline, erecting a laser level to align the light-emitting point of the laser level to the center of the cross ruler, and irradiating the laser level to the inside of the pipeline along the center of the pipe orifice of the pipeline;
s3: and (3) data measurement: uniformly dividing the water supply and drainage pipeline into n sections according to the integral length L of the water supply and drainage pipeline, enabling a laser level instrument irradiation point to face the center of a cross ruler after the length of S is advanced to the interior of the water supply and drainage pipeline along a pipe opening, and measuring the distance between the pipe bottom and the horizontal edge of the pipeline at each section according to the center position of the cross ruler, wherein S is L/n;
s4: calculating a deflection angle: calculating the vertical deflection angle alpha of each segment according to the data measured in the step S3 by using a formula I and a formula II respectivelyynAnd horizontal deflection angle alphaxnAnd will be alphaynAnd alphaxnThe larger one is taken as the deflection angle alphan；
S5: selecting the length of the pipe section: the deflection angle α calculated in step S4nWhen compared with the maximum allowable deflection angle of the lining pipe, when the angle is alphanWhen the maximum allowable deflection angle is smaller than the maximum allowable deflection angle, the length L of the pipe joint of the lining pipe is takennIs 6m, when α isnIf the maximum allowable deflection angle is larger, the angle is alphanCalculating the maximum allowable pipe joint length L in each section by using a formula IIImThen according to the maximum allowable pipe section length LmSelecting length L of corresponding lining pipe section integer valuenSaid L isnLess than Lm。
The first formula in step S4 is as follows: alpha is alphayn＝arctan((Yn-Yn-1) S); the second formula in step S4 is: alpha is alphaxn＝arctan((Xn-Xn-1) S); wherein Y isnAnd Yn-1The offset distances of the vertical direction of the nth section and the nth-1 section relative to the center of the tube are respectively; xnAnd Xn-1The offset distances of the horizontal direction at the nth section and the nth-1 section relative to the center of the tube are respectively; s is the distance traveled before each measurement.
The maximum allowable deflection angle in the above step S5 is 1 degree or 0.5 degree; when the pipe diameter D of the water supply and drainage pipeline is larger than or equal to 900mm and smaller than or equal to 1800mm, the maximum allowable deflection angle is 1 degree; when the pipe diameter D of the drainage pipeline is larger than 1800mm, the maximum allowable deflection angle is selected to be 0.5 degree.
The third formula in step S5 is: tan α ═ epsilon/1.75 × (L)m/D), i.e. Lm(1.75 × D × tan α)/∈; wherein epsilon is the minimum limit strain of the pipeline, namely 0.5 percent; l ismIs the maximum allowable pipe section length; d is the outer diameter of the pipeline; alpha is a deflection angle, i.e. alphan。
In the step S3, when the pipe is irradiated directly onto the inner wall of the water supply and drainage pipeline or is too close to the pipe wall due to the laser level irradiation point with a large curvature, the center of the pipe needs to be found at the previous measurement position by using the cross ruler with a scale, and the laser level is erected to continue to irradiate and measure the pipe along the center of the position.
In conclusion, the method obtains the corresponding length of each section of pipe joint, thereby finishing the structural lining of the aged water supply and drainage pipeline by centrifugally pouring the glass reinforced plastic pipe, reducing the influence of poor straightness on the repair and the update of the water supply and drainage pipeline and playing a role in improving the practical performance of the water supply and drainage pipeline.

Claims (5)

1. A method for calculating the length of a lining pipe joint for repairing and updating a water supply and drainage pipeline is characterized by comprising the following steps of: the method comprises the following steps:
s1: finding the center of the pipe opening: selecting a cross ruler with scales to measure and determine the central position of the pipeline at the pipe orifice of the water supply and drainage pipeline;
s2: erecting a laser level: aligning the center of a cross ruler to the center of the pipe orifice of the pipeline, erecting a laser level to align the light-emitting point of the laser level to the center of the cross ruler, and irradiating the laser level to the interior of the pipeline along the center of the pipe orifice of the pipeline;
s3: and (3) data measurement: uniformly dividing the water supply and drainage pipeline into n sections according to the integral length L of the water supply and drainage pipeline, enabling a laser level instrument irradiation point to face the center of a cross ruler after the length of S is advanced to the interior of the water supply and drainage pipeline along a pipe opening, and measuring the distance between the pipe bottom and the horizontal edge of the pipeline at each section according to the center position of the cross ruler, wherein S is L/n;
s4: calculating a deflection angle: calculating the vertical deflection angle alpha of each segment according to the data measured in the step S3 by using a formula I and a formula II respectivelyynAnd horizontal deflection angle alphaxnAnd will be alphaynAnd alphaxnThe larger one is taken as the deflection angle alphan；
S5: selecting the length of the pipe section: the deflection angle α calculated in step S4nWhen compared with the maximum allowable deflection angle of the lining pipe, when the angle is alphanWhen the maximum allowable deflection angle is smaller than the maximum allowable deflection angle, the length L of the pipe joint of the lining pipe is takennIs 6m, when α isnIf the maximum allowable deflection angle is larger, the angle is alphanCalculating the maximum allowable pipe joint length L in each section by using a formula IIImThen according to the maximum allowable pipe section length LmSelecting length L of corresponding lining pipe section integer valuenSaid L isnLess than Lm。
2. The method for calculating the length of the lining pipe joint for repairing and updating the water supply and drainage pipeline according to claim 1, wherein the method comprises the following steps: the first formula in step S4 is: alpha is alphayn＝arctan((Yn-Yn-1) S); the second formula in step S4 is: alpha is alphaxn＝arctan((Xn-Xn-1) S); wherein Y isnAnd Yn-1The offset distances of the vertical direction of the nth section and the nth-1 section relative to the center of the tube are respectively; xnAnd Xn-1The offset distances of the horizontal direction at the nth section and the nth-1 section relative to the center of the tube are respectively; s is the distance traveled before each measurement.
3. The method for calculating the length of the lining pipe joint for repairing and updating the water supply and drainage pipeline according to claim 1, wherein the method comprises the following steps: the maximum allowable deflection angle in the step S5 is 1 degree or 0.5 degree; when the pipe diameter DN of the water supply and drainage pipeline is greater than or equal to 900mm and less than or equal to 1800mm, the maximum allowable deflection angle is selected to be 1 degree; when the pipe diameter DN of the water supply and drainage pipeline is more than 1800mm, the maximum allowable deflection angle is selected to be 0.5 degree.
4. The method for calculating the length of the lining pipe joint for repairing and updating the water supply and drainage pipeline according to claim 1, wherein the method comprises the following steps: the formula three in step S5 is: tan α ═ epsilon/1.75 × (L)m/D), i.e. Lm(1.75 × D × tan α)/∈; wherein epsilon is the minimum limit strain of the pipeline, namely 0.5 percent; l ismIs the maximum allowable pipe section length; d is the outer diameter of the lining pipe; alpha is a deflection angle, i.e. alphan。
5. The method for calculating the length of the lining pipe joint for repairing the water supply and drainage pipeline according to claim 1, wherein the method comprises the following steps: in step S3, when the pipe is irradiated directly onto the inner wall of the water supply and drainage pipeline or is too close to the pipe wall due to the laser level irradiation point with a large curvature, the center of the pipe needs to be found again at the previous measurement position by using the cross ruler with the scale, and the laser level is erected to continue to irradiate and measure the pipe along the center of the position.
CN202011383004.4A 2020-12-01 2020-12-01 Method for calculating length of lining pipe joint for repairing and updating water supply and drainage pipeline Active CN112610798B (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN115111429A (en) * 2022-06-15 2022-09-27 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Installation process method of water-cooled complex pipeline

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CN111608664A (en) * 2020-04-29 2020-09-01 上海隧道工程有限公司 Automatic guiding method for long-distance curved jacking pipe
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KR101274109B1 (en) * 2012-11-07 2013-06-17 김민영 Drainage repairing apparatus with expansion pipe and drainage repairing method using the same
CN105257947A (en) * 2015-11-17 2016-01-20 北京城建集团有限责任公司 Construction method for large-diameter pipeline turnover lining
CN105864564A (en) * 2016-06-15 2016-08-17 长春高祥特种管道有限公司 Method for repairing underground glass fiber reinforced plastic pipe in equal-diameter penetrating mode
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115111429A (en) * 2022-06-15 2022-09-27 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Installation process method of water-cooled complex pipeline
CN115111429B (en) * 2022-06-15 2024-04-16 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Mounting process method of water-cooling complex pipeline

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