CN110726453A - Device and method for monitoring working state of river-crossing pipeline - Google Patents

Device and method for monitoring working state of river-crossing pipeline Download PDF

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Publication number
CN110726453A
CN110726453A CN201910882962.7A CN201910882962A CN110726453A CN 110726453 A CN110726453 A CN 110726453A CN 201910882962 A CN201910882962 A CN 201910882962A CN 110726453 A CN110726453 A CN 110726453A
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river
pipeline
water level
crossing
crossing pipeline
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彭波
王磊
罗志强
夏敏
赵志超
敖波
蔡强
陈福林
魏宝来
刘骁
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Sinopec Chongqing Natural Gas Pipeline Co Ltd
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Sinopec Chongqing Natural Gas Pipeline Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
    • G01C13/002—Measuring the movement of open water

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
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Abstract

The invention discloses a device and a method for monitoring the working state of a river-crossing pipeline. According to the invention, the water level of the river channel is monitored by the radar level gauge, the scouring depth of the riverbed near the river crossing pipeline is obtained by calculation, and the initial burial depth is compared, so that the working state of the river crossing pipeline is obtained, early warning can be carried out on abnormal events such as emptying of a pipeline water protection facility by flood, drifting of the pipeline and the like, the risk identification of pipeline operation is enhanced, and the production and operation cost is reduced.

Description

Device and method for monitoring working state of river-crossing pipeline
Technical Field
The invention relates to the technical field of petroleum and natural gas pipeline protection, in particular to a river crossing pipeline working state monitoring device and method.
Background
When the petroleum and natural gas pipeline passes through a mountain river, during the flood period, the flow and the flow velocity of the flood are increased rapidly, so that a strong erosion effect is generated on a river bed, water conservation facilities of the pipeline are scoured, the buried depth of the pipeline becomes shallow, the pipeline is exposed or even suspended, and the safe operation of the pipeline is threatened. Therefore, the method has important practical significance for predicting the buried depth of the river-crossing pipeline. As far as the inventor knows, no clear calculation method for the buried depth of the river-crossing pipeline during the flood period exists at present, and the method usually checks whether the pipeline is exposed or suspended by a manual patrol method after the flood period.
Disclosure of Invention
Aiming at the defects in the prior art, the river crossing pipeline working state monitoring device and method provided by the invention solve the problems that the pipeline state is not easy to monitor and potential safety hazards exist.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: the utility model provides a cross river pipeline operating condition monitoring devices, includes the radar fluviograph and crosses river course, cross river pipeline setting in the riverbed below in river course and cross the river course, the radar fluviograph sets up on the riverbed of crossing river course top, just the height of radar fluviograph is far above the water level in river course for the water level in monitoring river course is high.
Further: and the radar water level gauge is provided with a wireless data transmission device connected with the radar water level gauge, and the wireless data transmission device is in communication connection with the intelligent terminal.
Further: the model of the wireless data transmission device is JFY-SC 500.
The beneficial effect of adopting the further scheme is as follows: water level data collected by the radar water level gauge can be transmitted to the intelligent terminal through the wireless data transmission device, and subsequent corresponding calculation is carried out through the intelligent terminal.
Further: the model of the radar water level gauge is JFY-DBSW 500.
A method for monitoring the working state of a river-crossing pipeline is characterized by comprising the following steps:
s1, measuring the water level height of the river channel by a radar level gauge;
s2, calculating the average flow velocity of the river channel through the water level height of the river channel and the geometric parameters of the river channel;
s3, calculating the scouring depth of the riverbed around the river-crossing pipeline through the average flow velocity of the water flow of the riverway;
s4, when the flushing depth is 0, the step S5 is carried out, otherwise, the step S6 is carried out;
s5, calculating the scour bottom elevation of the cross section of the river-crossing pipeline, judging the working state of the river-crossing pipeline by combining the top elevation and the bottom elevation of the pipeline, and ending the method;
and S6, adjusting the geometric parameters of the river channel according to the scouring depth, and returning to the step S2.
Further: the calculation formula of the average flow velocity of the water flow in the step S2 is as follows:
Figure BDA0002206426880000021
in the above formula, v is the average flow velocity of water, C is the metabolic coefficient, R is the hydraulic radius, and i is the river channel descending slope, wherein the calculation formula of the hydraulic radius R is:
R＝A/λ
in the above formula, A is the water passing area, and A ═ f1(z), z is the water level height of the river channel, lambda is the wet period, and lambda is f2(z)，f1And f2Are all functions related to the water level height z.
Further: the calculation formula of the flush depth in step S3 is:
Figure BDA0002206426880000022
in the above formula,. DELTA.ZkFor depth of scouring, v is mean flow velocity of water flow, vAllow forThe allowable non-impact flow speed on the river bed surface, and n is a constant and is 0.25.
Further: the calculation formula of the brushing bottom elevation in the step S5 is as follows:
Figure BDA0002206426880000031
in the above formula, ZfFor scouring the bottom elevation, Δ Z, of the pipe sectionkiFor a flush depth with an iteration number of i, i is 1,2,3 …, and m is the iteration number when the flush depth is 0.
Further: the working states in the step S5 include a buried state, an exposed state, and a suspended state, and the method for determining the working states includes:
if Z isf<ZTop roofThen the river-crossing pipeline is in a buried state;
if Z isBottom≤Zf≤ZTop roofThe river-crossing pipeline is in an exposed state;
if Z isf<ZBottomThe river-crossing pipeline is in a suspended state;
wherein Z isfFor scouring the bottom elevation, Z, of the pipe sectionTop roofFor the top elevation of the pipe, ZBottomIs the bottom elevation of the pipeline.
The invention has the beneficial effects that: according to the invention, the water level of the river channel is monitored by the radar level gauge, the scouring depth of the riverbed near the river crossing pipeline is obtained by calculation, and the initial burial depth is compared, so that the working state of the river crossing pipeline is obtained, early warning can be carried out on abnormal events such as emptying of a pipeline water protection facility by flood, drifting of the pipeline and the like, the risk identification of pipeline operation is enhanced, and the production and operation cost is reduced.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
Wherein: 1. a river-crossing pipeline; 2. a riverbed; 3. a river channel; 4. a radar level gauge.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, a river crossing pipeline working condition monitoring device comprises a radar water level gauge 4 and a river crossing pipeline 1, wherein the river crossing pipeline 1 is arranged below a riverbed 2 of a riverway 3 and transversely crosses the riverway 3, the radar water level gauge 4 is arranged on the riverbed 2 above the river crossing pipeline 1, and the height of the radar water level gauge 4 is far higher than that of the riverway 3 and is used for monitoring the water level of the riverway 3.
In one embodiment of the invention, the radar level gauge 4 is provided with a wireless data transmission device connected with the radar level gauge, and the wireless data transmission device is in communication connection with the intelligent terminal.
In one embodiment of the present invention, the wireless data transfer device is model number JFY-SC 500. The model number of the radar level gauge 4 is JFY-DBSW 500. Water level data collected by the radar water level gauge can be transmitted to the intelligent terminal through the wireless data transmission device, and subsequent corresponding calculation is carried out through the intelligent terminal.
As shown in fig. 2, a method for monitoring the working state of a river-crossing pipeline comprises the following steps:
s1, measuring the water level height of the river channel by a radar level gauge;
s2, calculating the average flow velocity of the river channel through the water level height of the river channel and the geometric parameters of the river channel;
the average flow velocity of the water flow is calculated by the formula:
Figure BDA0002206426880000041
in the above formula, v is the average flow velocity of water, C is the metabolic coefficient, R is the hydraulic radius, and i is the river channel descending slope, wherein the calculation formula of the hydraulic radius R is:
R＝A/λ
in the above formula, A is the water passing area, and A ═ f1(z), z is the water level height of the river channel, lambda is the wet period, and lambda is f2(z)，f1And f2Are all functions related to the water level height z.
S3, calculating the scouring depth of the riverbed around the river-crossing pipeline through the average flow velocity of the water flow of the riverway;
the calculation formula of the scouring depth is as follows:
Figure BDA0002206426880000042
in the above formula,. DELTA.ZkFor depth of scouring, v is mean flow velocity of water flow, vAllow forThe allowable non-impact flow speed on the river bed surface, and n is a constant and is 0.25.
S4, when the flushing depth is 0, the step S5 is carried out, otherwise, the step S6 is carried out;
s5, calculating the scour bottom elevation of the cross section of the river-crossing pipeline, judging the working state of the river-crossing pipeline by combining the top elevation and the bottom elevation of the pipeline, and ending the method;
the calculation formula of the brushing bottom elevation is as follows:
Figure BDA0002206426880000051
in the above formula, ZfFor scouring the bottom elevation, Δ Z, of the pipe sectionkiFor a flush depth with an iteration number of i, i is 1,2,3 …, and m is the iteration number when the flush depth is 0.
The working state comprises a buried state, an exposed state and a suspended state, and the judging method of the working state comprises the following steps:
if Z isf<ZTop roofThen the river-crossing pipeline is in a buried state;
if Z isBottom≤Zf≤ZTop roofThe river-crossing pipeline is in an exposed state;
if Z isf<ZBottomThe river-crossing pipeline is in a suspended state;
wherein Z isfFor scouring the bottom elevation, Z, of the pipe sectionTop roofFor the top elevation of the pipe, ZBottomIs the bottom elevation of the pipeline.
And S6, adjusting the geometric parameters of the river channel according to the scouring depth, and returning to the step S2.
According to the invention, the water level of the river channel is monitored by the radar level gauge, the scouring depth of the riverbed near the river crossing pipeline is obtained by calculation, and the initial burial depth is compared, so that the working state of the river crossing pipeline is obtained, early warning can be carried out on abnormal events such as emptying of a pipeline water protection facility by flood, drifting of the pipeline and the like, the risk identification of pipeline operation is enhanced, and the production and operation cost is reduced.

Claims (9)

1. The utility model provides a cross river pipeline operating condition monitoring devices, its characterized in that includes radar water level gauge (4) and cross river pipeline (1), cross river pipeline (1) and set up riverbed (2) below in river course (3) and cross river course (3), radar water level gauge (4) set up on riverbed (2) of crossing river pipeline (1) top, just the height of radar water level gauge (4) is far above the water level height of river course (3) for monitor the water level height of river course (3).
2. The river crossing pipeline working state monitoring device according to claim 1, wherein a wireless data transmission device connected with the radar water level gauge (4) is arranged on the radar water level gauge, and the wireless data transmission device is in communication connection with an intelligent terminal.
3. A river crossing pipeline working state monitoring device according to claim 2, wherein the wireless data transmission device is JFY-SC500 in model number.
4. A river crossing pipeline working condition monitoring device according to claim 1, wherein the radar level gauge (4) is model JFY-DBSW 500.
5. A method for monitoring the working state of a river-crossing pipeline is characterized by comprising the following steps:
s1, measuring the water level height of the river channel by a radar level gauge;
s2, calculating the average flow velocity of the river channel through the water level height of the river channel and the geometric parameters of the river channel;
s3, calculating the scouring depth of the riverbed around the river-crossing pipeline through the average flow velocity of the water flow of the riverway;
s4, when the flushing depth is 0, the step S5 is carried out, otherwise, the step S6 is carried out;
s5, calculating the scour bottom elevation of the cross section of the river-crossing pipeline according to the scour depth, judging the working state of the river-crossing pipeline by combining the top elevation and the bottom elevation of the pipeline, and ending the method;
and S6, adjusting the geometric parameters of the river channel according to the scouring depth, and returning to the step S2.
6. The method for monitoring the working condition of the river crossing pipeline according to claim 5, wherein the average flow velocity of the water flow in the step S2 is calculated by the formula:
in the above formula, v is the average flow velocity of water, C is the metabolic coefficient, R is the hydraulic radius, and i is the river channel descending slope, wherein the calculation formula of the hydraulic radius R is:
R＝A/λ
in the above formula, A is the water passing area, and A ═ f1(z), z is the water level height of the river channel, lambda is the wet period, and lambda is f2(z)，f1And f2Are all functions related to the water level height z.
7. The method for monitoring the working condition of the river crossing pipeline according to claim 5, wherein the calculation formula of the scouring depth in the step S3 is as follows:
Figure FDA0002206426870000021
in the above formula,. DELTA.ZkFor depth of scouring, v is mean flow velocity of water flow, vAllow forThe allowable non-impact flow speed on the river bed surface, and n is a constant and is 0.25.
8. The method for monitoring the working condition of the river crossing pipeline according to claim 5, wherein the calculation formula of the brushing bottom elevation in the step S5 is as follows:
Figure FDA0002206426870000022
in the above formula, ZfFor scouring the bottom elevation, Δ Z, of the pipe sectionkiFor a flush depth with an iteration number of i, i is 1,2,3 …, and m is the iteration number when the flush depth is 0.
9. The method for monitoring the working state of the river crossing pipeline according to claim 5, wherein the working state in the step S5 includes a buried state, a bare state and a suspended state, and the method for judging the working state is as follows:
if Z isf<ZTop roofThen the river-crossing pipeline is in a buried state;
if Z isBottom≤Zf≤ZTop roofThe river-crossing pipeline is in an exposed state;
if Z isf<ZBottomThe river-crossing pipeline is in a suspended state;
wherein Z isfFor scouring the bottom elevation, Z, of the pipe sectionTop roofFor the top elevation of the pipe, ZBottomIs the bottom elevation of the pipeline.
CN201910882962.7A 2019-09-18 2019-09-18 Device and method for monitoring working state of river-crossing pipeline Pending CN110726453A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111879283A (en) * 2020-07-08 2020-11-03 中国科学院海洋研究所 Pipeline retesting method for crossing river channel
CN113987971A (en) * 2021-10-27 2022-01-28 北京中地华安环境工程有限公司 Flood danger early warning method and device, electronic equipment and medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111879283A (en) * 2020-07-08 2020-11-03 中国科学院海洋研究所 Pipeline retesting method for crossing river channel
CN113987971A (en) * 2021-10-27 2022-01-28 北京中地华安环境工程有限公司 Flood danger early warning method and device, electronic equipment and medium

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