CN109839209A - The monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil - Google Patents
The monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil Download PDFInfo
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- CN109839209A CN109839209A CN201711226841.4A CN201711226841A CN109839209A CN 109839209 A CN109839209 A CN 109839209A CN 201711226841 A CN201711226841 A CN 201711226841A CN 109839209 A CN109839209 A CN 109839209A
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Abstract
The present invention provides a kind of temperature field of pipeline soil and the monitoring instruments of the thermal coefficient of soil, including cross bar, multiple temperature-measuring optical fiber sensors, data collector and data processor, wherein, multiple temperature-measuring optical fiber sensors are arranged in the mounting hole of pipeline soil, the upper end is connect with cross bar, the extension reverse vertical of cross bar is located in the same plane in pipeline, multiple temperature-measuring optical fiber sensors；The input terminal of data collector is connected with multiple temperature-measuring optical fiber sensors, and output end is connected with the input terminal of data processor；The Data Concurrent that data collector is configured as acquisition temperature-measuring optical fiber sensor detection is sent to data processor；Data processor is configured as receiving data and be handled, the temperature field monitoring instrument provided by the invention for obtaining the thermal coefficient and pipeline soil of soil is smaller to the range of the soil excavation of pipeline in embedded temperature sensor, can simultaneously obtain the temperature field of pipeline soil and the thermal coefficient of soil.
Description
Technical field
The present invention relates to pipe-line technical field, in particular to the temperature field of a kind of pipeline soil and soil
Thermal coefficient monitoring instrument.
Background technique
The temperature field of oil pipeline surrounding soil can occur accordingly to change with transport oil condition variation, grasp oil pipeline week
The thermal coefficient of the distribution situation and soil of enclosing the temperature field of soil has important role to the construction and safe operation of pipeline.
For hot oil pipeline, the specific value to the pipeline soil moisture is needed to be monitored, grasps its coverage and variation rule
The thermal coefficient of the soil of rule and pipeline, and then optimize operational management for pipeline and technical support is provided.Therefore it needs
Temperature sensor is set in the soil of pipeline, to detect the temperature of pipeline surrounding soil, obtains the temperature of pipeline soil
Spend the distribution situation of field and the thermal coefficient of soil.
Currently, needing when temperature sensor being arranged in the soil around oil pipeline by the soil around oil pipeline
It is excavated, multiple temperature sensors is embedded in around pipeline on a large scale then, and multiple sensors are in and petroleum pipeline
In the vertical same plane of the axis in road, accurately to obtain the temperature field of oil pipeline surrounding soil.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
Soil around oil pipeline is carried out after excavating on a large scale, the distribution of oil pipeline temperature field surrounding is affected,
After embedded temperature sensor, since the thermal coefficient of soil is small, feature with large heat capacity, the temperature of oil pipeline surrounding soil
Field restores stabilization again and needs the long period, the temperature field around oil pipeline obtained before temperature field restores to stablize again
Data it is unreliable, can not for oil pipeline optimize operational management reliable technical support be provided；By excavating oil transportation on a large scale
The soil of pipeline buries temperature sensor, it is difficult to ensure that multiple sensors are in the same plane, is examined based on sensor
The accuracy in the temperature field around oil pipeline that the temperature data of survey obtains is difficult to ensure；The existing temperature sensor used for
Platinum resistance temperature sensor can only measure the temperature at the soil where temperature sensor, and then be obtained according to the data measured
Temperature field it is inaccurate；And existing tool cannot obtain the thermal coefficient of the soil of pipeline.
Summary of the invention
In view of this, the present invention provides the monitoring work in a kind of temperature field of pipeline soil and the thermal coefficient of soil
Tool, it is smaller to the range of the soil excavation of pipeline in embedded temperature sensor, and pipeline soil can be obtained simultaneously
Temperature field and soil thermal coefficient.
Specifically, including technical solution below:
The present invention provides a kind of temperature field of pipeline soil and the monitoring instrument of the thermal coefficient of soil, the prisons
Survey tool includes cross bar, multiple temperature-measuring optical fiber sensors, data collector and data processor, wherein
The extending direction of the cross bar is vertical with the extending direction of the pipeline；
Multiple temperature-measuring optical fiber sensors are arranged in the mounting hole of the pipeline soil, the upper end and the cross
Bar connection, and multiple temperature-measuring optical fiber sensors are located in the same plane；
The input terminal of the data collector is connected with multiple temperature-measuring optical fiber sensors, the data collector it is defeated
Outlet is connected with the input terminal of the data processor；
The Data Concurrent that the data collector is configured as acquiring the temperature-measuring optical fiber sensor detection is sent to the number
According to processor；
The data processor is configured as receiving the data of the data collector transmission and be handled, and obtains soil
Thermal coefficient and pipeline soil temperature field.
Selectively, the thermal coefficient of the soil includes the localized thermal conductivity of soil, and the data processor obtains
The calculation formula that the localized thermal conductivity of the soil uses are as follows:
In formula,
λr--- one in monitoring instrument being arranged at the third place between the first position and the second position of pipeline
The localized thermal conductivity of soil around temperature-measuring optical fiber sensor；
The mass flow of m --- pipeline internal medium；
The specific heat capacity of c --- pipeline internal medium；
T1--- the temperature of pipeline internal medium at the first position of pipeline；
T2--- positioned at the temperature of the second place pipeline internal medium in the first position downstream of pipeline；
The distance between first position and the second position of L --- pipeline；
R --- the distance between first sampled point and the pipeline center of circle on the temperature-measuring optical fiber sensor；
Ti--- the temperature of soil at the first sampled point；
Δ r --- the distance between second sampled point and the first sampled point on the temperature-measuring optical fiber sensor；
Ti' --- the temperature of soil at the second sampled point.
Selectively, the thermal coefficient of the soil includes the mean coefficient of heat conductivity of soil, and the data processor obtains
The calculation formula that the mean coefficient of heat conductivity of the soil uses are as follows:
In formula,
The mean coefficient of heat conductivity of soil between the first position and the second position of λ --- pipeline
The mass flow of m --- pipeline internal medium；
The specific heat capacity of c --- pipeline internal medium；
T1--- the temperature of pipeline internal medium at the first position of pipeline；
T2--- positioned at the temperature of the second place pipeline internal medium in the first position downstream of pipeline；
The distance between first position and the second position of L --- pipeline；
The buried depth of h --- pipeline；
The outer diameter of D --- pipeline；
Tbi--- the mean temperature of pipeline outer wall；
T0--- the natural temperature of the soil at the buried depth of pipeline.
Selectively, the outside of multiple temperature-measuring optical fiber sensors is provided with armor.
It selectively, further include multiple vertical bars；
The quantity of the vertical bar is identical as the quantity of the temperature-measuring optical fiber sensor；
The upper end of multiple vertical bars is connect with the cross bar, and the survey is provided in each described vertical bar
Warm fibre optical sensor.
Selectively, each described temperature-measuring optical fiber sensor is wrapped in the corresponding vertical bar.
Selectively, the material of the vertical bar is atactic copolymerized polypropene.
Selectively, the cross bar is detachably connected with multiple vertical bars.
Selectively, from the first end of the cross bar to second end, between two adjacent temperature-measuring optical fiber sensors away from
From being gradually increased.
Selectively, from the first end of the cross bar, the length of first temperature-measuring optical fiber sensor is most short.
Selectively, from the first end of the cross bar, second temperature-measuring optical fiber sensor and first survey
The distance between warm fibre optical sensor is greater than the half of the oil pipeline outer diameter.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
The monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil provided in an embodiment of the present invention, passes through
Multiple temperature-measuring optical fiber sensors are set, only need to excavate multiple in the soil of pipeline when installing temperature-measuring optical fiber sensor and are surveyed
The warm one-to-one strip hole of fibre optical sensor, then multiple temperature-measuring optical fiber sensors are inserted into corresponding strip hole, from
And the soil range of the pipeline excavated when excavating elongate holes is smaller, to the Influence of Temperature Field of oil pipeline surrounding soil compared with
Small, the temperature field of oil pipeline surrounding soil is shorter the time required to restoring after embedded monitoring instrument.By be arranged cross bar, convenient for
The connection of multiple temperature-measuring optical fiber sensors so that multiple temperature-measuring optical fiber sensors be made to be in the same plane, and then measures and oil transportation
The temperature of soil in the vertical plane of the axis of pipeline.In addition, temperature-measuring optical fiber sensor can measure the continuous of its surrounding soil
Temperature profile data, compared with the existing technology in use platinum resistance temperature sensor be only able to detect the position where it
The temperature of smaller area, data processor 4 are more accurate according to the temperature field that the data that temperature-measuring optical fiber sensor measures obtain；Separately
Outside, the data that data processor 4 sends received data collector 3, which carry out processing, can be obtained the thermal coefficient of soil.Therefore
The monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil provided by the invention buries temperature-measuring optical fiber sensor
When range that the soil of pipeline is excavated it is smaller, and data processor 4 can be same according to the temperature data that monitoring instrument detects
When obtain the temperature field of soil around oil pipeline and the thermal coefficient of soil.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the monitoring in a kind of temperature field of pipeline soil provided in an embodiment of the present invention and the thermal coefficient of soil
The schematic diagram of tool；
Fig. 2 is the monitoring using the temperature field of pipeline soil provided in an embodiment of the present invention and the thermal coefficient of soil
The scene figure of tool；
Appended drawing reference in figure is respectively as follows:
1, cross bar；
2, temperature-measuring optical fiber sensor；
201, first temperature-measuring optical fiber sensor；
202, second temperature-measuring optical fiber sensor；
203, third temperature-measuring optical fiber sensor；
204, the 4th temperature-measuring optical fiber sensor；
205, the 5th temperature-measuring optical fiber sensor；
206, the 6th temperature-measuring optical fiber sensor；
207, the 7th temperature-measuring optical fiber sensor；
3, data collector；
4, data processor.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
The embodiment of the invention provides a kind of temperature field of pipeline soil and the monitoring instrument of the thermal coefficient of soil,
As shown in Figure 1, the monitoring instrument includes cross bar 1, multiple temperature-measuring optical fiber sensors 2, data collector 3 and data processor 4,
In, as shown in Fig. 2, the extending direction of cross bar 1 is vertical with the extending direction of pipeline；Multiple temperature-measuring optical fiber sensors 2 are arranged in pipe
In the mounting hole of road surrounding soil, the upper end is connect with cross bar 1, and multiple temperature-measuring optical fiber sensors 2 are located in the same plane；
The input terminal of data collector 3 is connected with multiple temperature-measuring optical fiber sensors 2, the output end and data processor 4 of data collector 3
Input terminal be connected；Data collector 3 is configured as the Data Concurrent that acquisition temperature-measuring optical fiber sensor 2 detects and send to data processing
Device 4；Data processor 4 is configured as receiving the data of the transmission of data collector 3 and be handled, and obtains the thermal coefficient of soil
And the temperature field of pipeline soil.
Referring to Fig. 1, monitoring instrument provided in this embodiment includes 7 temperature-measuring optical fiber sensors 2, respectively first thermometric
203, the 4th 201, second temperature-measuring optical fiber sensors 202 of fibre optical sensor, third temperature-measuring optical fiber sensor temperature-measuring optical fibers
Sensor 204, the 5th temperature-measuring optical fiber sensor 205, the 6th temperature-measuring optical fiber sensor 206 and the 7th temperature-measuring optical fiber sensing
The upper end of device 207, seven temperature-measuring optical fiber sensors 2 is connect with cross bar 1, and six temperature-measuring optical fiber sensors 2 are located at same put down
In face.
It is illustrated it should be noted that the present embodiment is only seven with the quantity of temperature-measuring optical fiber sensor 2, at it
In his embodiment, the quantity of temperature-measuring optical fiber sensor 2 can also be other quantity.
The monitoring work of the thermal coefficient of temperature field with regard to pipeline soil provided in an embodiment of the present invention and soil below
The working principle of tool, which is given, to be described:
In use, being excavated out and six strip holes using tool in oil pipeline surrounding soil, wherein two neighboring length
The distance between the corresponding two neighboring temperature-measuring optical fiber sensor 2 in the distance between hole is identical；By six of monitoring instrument
Temperature-measuring optical fiber sensor 2 is corresponding to be inserted into strip hole, and six temperature-measuring optical fiber sensors 2 is made to be located at the week of oil pipeline
In the soil enclosed, as shown in Figure 2.Finally, by cross bar 1 above using soil cover.Data collector 3 acquires temperature-measuring optical fiber and passes
The data that sensor 2 acquires, and it is sent to data processor 4.Data processor 4 receives data and is handled, and obtains soil
The temperature field of thermal coefficient and pipeline soil.
Specifically, when excavating elongate holes, Luoyang Spade can be used and excavated, stamp hits ground vertically downward when use,
The soil of underground can be taken out of using the shovel of semi-cylindrical, so that the model of the soil of excavation can be reduced when excavating strip hole
It encloses.
The monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil provided in an embodiment of the present invention, passes through
Multiple temperature-measuring optical fiber sensors 2 are set, only need to excavate multiple and temperature-measuring optical fiber sensor 2 in the soil of pipeline and correspond
Strip hole, then multiple temperature-measuring optical fiber sensors 2 are inserted into corresponding strip hole, to excavate excavation when elongate holes
Pipeline soil range it is smaller, it is smaller to the Influence of Temperature Field of oil pipeline surrounding soil, bury monitoring instrument after it is defeated
The temperature field of oil-piping surrounding soil is shorter the time required to restoring.By the way that cross bar 1 is arranged, it is convenient for and multiple temperature-measuring optical fiber sensors
2 connections, so that multiple temperature-measuring optical fiber sensors 2 be made to be in the same plane, and then measure vertical with the axis of oil pipeline
The temperature of soil in plane.In addition, temperature-measuring optical fiber sensor 2 can measure the continuous temperature profile data of its surrounding soil,
The platinum resistance temperature sensor used in compared with the existing technology is only able to detect the temperature of the smaller area of the position where it,
Data processor 4 is more accurate according to the temperature field that the data that temperature-measuring optical fiber sensor 2 measures obtain；In addition, data processor 4 is right
The data that received data collector 3 is sent, which carry out processing, can be obtained the thermal coefficient of soil.Therefore pipeline provided by the invention
The monitoring instrument of the thermal coefficient in the temperature field and soil of surrounding soil, to pipeline when burying temperature-measuring optical fiber sensor 2
The range that soil excavates is smaller, and data processor 4 can simultaneously obtain oil pipeline according to the temperature data that monitoring instrument detects
The temperature field of the soil of surrounding and the thermal coefficient of soil.
As shown in Fig. 2, data collector 3 may be provided above the ground, pass through cable with multiple temperature-measuring optical fiber sensors 2
(not shown) connection, data processor 4 may be provided at remote monitoring center.For the ease of data collector 3 to data
Processor 4 sends data, and data collector 3 can pass through cell phone network data transmission module or Industrial Ethernet and data processing
Device 4 connects, so that data processor 4 can obtain the data of the transmission of data collector 3 in real time.
In the present embodiment, the thermal coefficient for the soil that data processor 4 obtains includes the localized thermal conductivity of soil, number
The calculation formula used according to the localized thermal conductivity that processor 4 obtains soil are as follows:
In formula,
λr--- one in monitoring instrument being arranged at the third place between the first position and the second position of pipeline
The localized thermal conductivity of soil around temperature-measuring optical fiber sensor；
The mass flow of m --- pipeline internal medium；
The specific heat capacity of c --- pipeline internal medium；
T1--- the temperature of pipeline internal medium at the first position of pipeline；
T2--- positioned at the temperature of the second place pipeline internal medium in the first position downstream of pipeline；
The distance between first position and the second position of L --- pipeline；
R --- the distance between first sampled point and the pipeline center of circle on the temperature-measuring optical fiber sensor；
Ti--- the temperature of soil at the first sampled point；
Δ r --- the distance between second sampled point and the first sampled point on the temperature-measuring optical fiber sensor；
Ti' --- the temperature of soil at the second sampled point.
Wherein, at the first sampled point soil temperature Ti, at the second sampled point soil temperature Ti' it is same temperature-measuring optical fiber
The temperature for the soil at different location that sensor 2 measures.
The temperature T of pipeline internal medium at the first position of pipeline1And the temperature T of the second place pipeline internal medium of pipeline2
It can be measured by the temperature sensor being arranged in pipeline, and be inputted from operator to data processor 4.Pipeline internal medium
The third of the distance between mass flow m, the specific heat capacity c of pipeline internal medium, the first position of pipeline and second position L, pipeline
The second sampled point at position at the third place of the distance between corresponding first sampled point and the pipeline center of circle r, pipeline and
The distance between one sampled point Δ r is inputted from operator to data processor 4.
Further, the thermal coefficient of soil further includes the mean coefficient of heat conductivity of soil, and data processor 4 obtains soil
The calculation formula that mean coefficient of heat conductivity uses are as follows:
In formula,
The mean coefficient of heat conductivity of soil between the first position and the second position of λ --- pipeline
The mass flow of m --- pipeline internal medium；
The specific heat capacity of c --- pipeline internal medium；
T1--- the temperature of pipeline internal medium at the first position of pipeline；
T2--- positioned at the temperature of the second place pipeline internal medium in the first position downstream of pipeline；
The distance between first position and the second position of L --- pipeline；
The buried depth of h --- pipeline；
The outer diameter of D --- pipeline；
Tbi--- the mean temperature of pipeline outer wall；
T0--- the natural temperature of the soil at the buried depth of pipeline.
Wherein, at the first sampled point soil temperature Ti, at the second sampled point soil temperature Ti' it is same temperature-measuring optical fiber
The temperature for the soil at different location that sensor 2 measures.
The temperature T of pipeline internal medium at the first position of pipeline1And the temperature T of the second place pipeline internal medium of pipeline2
It can be measured by the temperature sensor being arranged in pipeline, and be inputted from operator to data processor 4.Pipeline outer wall is put down
Equal temperature TbiIt is calculated by the data that the multiple temperature sensors being arranged on pipeline outer wall measure, and from operator to number
It is inputted according to processor 4.The first position and second of the mass flow m of pipeline internal medium, the specific heat capacity c of pipeline internal medium, pipeline
The distance between position L, the buried depth h of pipeline, pipeline outer diameter D using obtained from operator before the monitoring instrument and to
Data processor 4 inputs.
In the present embodiment, in order to avoid installation temperature-measuring optical fiber sensor 2 make temperature-measuring optical fiber sensor 2 occur it is mobile or by
Chemicals attack in soil and damage, armor can be set outside temperature-measuring optical fiber sensor 2.Armor can increase
The mechanical strength of cable improves erosion prevention, and will not detect temperature to temperature-measuring optical fiber sensor 2 and impact.
When the soil property of soil is bad, soil is tended to have on the hole wall of the elongate holes of excavation and is fallen off, to make temperature-measuring optical fiber
Sensor 2 is not easily accessible in elongate holes.For the ease of the installation of temperature-measuring optical fiber sensor 2, monitoring instrument may also include more
A vertical bar (being not shown in the figure, be located at temperature-measuring optical fiber sensor 2), the quantity of vertical bar and the number of temperature-measuring optical fiber sensor 2
Measure identical, the equal length of each vertical bar and corresponding temperature-measuring optical fiber sensor 2, and the upper end of multiple vertical bars and cross bar
1 connects, and a temperature-measuring optical fiber sensor 2 is arranged in each vertical bar.
So set, the hardness due to vertical bar is stronger, after temperature-measuring optical fiber sensor 2 is arranged in vertical bar, it is easy to insert
Enter into the elongate holes of excavation, therefore is convenient for the installation of temperature-measuring optical fiber sensor 2.
In order to make temperature-measuring optical fiber sensor 2 and vertical bar be connected firmly, each temperature-measuring optical fiber sensor 2 can be wrapped in pair
In the vertical bar answered, or can also be used other fixing pieces such as rope etc. temperature-measuring optical fiber sensor 2 is fixed on it is corresponding vertical
On bar.
In order to guarantee the hardness of vertical bar, it is set not deform during being inserted into soil, and guarantee vertical bar
The test temperature difference of temperature-measuring optical fiber sensor 2 is not will cause, the material of vertical bar can be atactic copolymerized polypropene.
In order to guarantee the hardness of cross bar 1, metal material is can be used in cross bar 1.
Further, for the ease of carrying, mitigate weight, each vertical bar 2 and cross bar 1 may be designed as hollow pipe.
The connection type of cross bar 1 and each vertical bar 2 can there are many, for the ease of the dismounting of cross bar 1 and vertical bar 2,
Cross bar 1 and each vertical bar 2 are to be detachably connected.There are many dismountable modes, is arranged such as on cross bar 1 perpendicular to axis
Through-hole, one end that vertical bar 2 passes through through-hole is provided perpendicular to the through-hole of axis, rushes across the through-hole using pin, thus will
Cross bar 1 is connect with vertical bar 2.
In the present embodiment, the distance between adjacent temperature-measuring optical fiber sensor 2 and each temperature-measuring optical fiber sensor 2
Length can refer to Fig. 5-5 pipeline Soil Temperature Field cloth of page 205 in " oil pipeline design and the management " of Yang Xiaoheng chief editor
Office determines, the arrangement of temperature-measuring optical fiber sensor 2 can be made more reasonable, and then more smart according to the temperature field that the data measured obtain
Really.
Closer to the region of oil pipeline, the temperature of soil is affected by oil pipeline temperature, and temperature gradient is larger；
And when at a distance from oil pipeline farther out, the temperature of soil is influenced smaller by oil pipeline temperature, and temperature gradient is smaller.Cause
This, in order to guarantee the soil around oil pipeline temperature field accuracy, as shown in Figure 1, from the first end of cross bar 1 to second
End, the distance between two adjacent temperature-measuring optical fiber sensors 2 are gradually increased.
A temperature-measuring optical fiber sensing need to be arranged in the temperature of soil above oil pipeline in order to obtain above oil pipeline
Device 2.As shown in Figure 1, from the first end of cross bar 1, first temperature-measuring optical fiber sensor 201 be located at the top of oil pipeline and its
The straight line at place intersects with the axis of oil pipeline, and length is most short.
As shown in Figure 1, second temperature-measuring optical fiber sensor 202 and first temperature-measuring optical fiber pass from the first end of cross bar 1
The distance between sensor 201 is greater than the half of the outer diameter of oil pipeline.In this way, it is ensured that first temperature-measuring optical fiber sensor 201
Positioned at the position directly above of oil pipeline, and second temperature-measuring optical fiber sensor 202 is located at the side of oil pipeline, thus first
A temperature-measuring optical fiber sensor 201 and second temperature-measuring optical fiber sensor 202 can be measured above oil pipeline respectively and pipeline side
Soil temperature.
In this application, it should be understood that term " first ", " second " etc. are used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (11)
1. a kind of monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil, which is characterized in that the monitoring
Tool includes cross bar, multiple temperature-measuring optical fiber sensors, data collector and data processor, wherein
The extending direction of the cross bar is vertical with the extending direction of the pipeline；
Multiple temperature-measuring optical fiber sensors are arranged in the mounting hole of the pipeline soil, and the upper end and the cross bar connect
It connects, and multiple temperature-measuring optical fiber sensors are located in the same plane；
The input terminal of the data collector is connected with multiple temperature-measuring optical fiber sensors, the output end of the data collector
It is connected with the input terminal of the data processor；
The Data Concurrent that the data collector is configured as acquiring the temperature-measuring optical fiber sensor detection is sent to the data
Manage device；
The data processor is configured as receiving the data of the data collector transmission and be handled, and obtains leading for soil
The temperature field of hot coefficient and pipeline soil.
2. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 1, described
The thermal coefficient of soil includes the localized thermal conductivity of soil, and the data processor obtains the localized thermal conductivity of the soil
The calculation formula of use are as follows:
In formula,
λr--- the temperature measuring optical in monitoring instrument being arranged at the third place between the first position and the second position of pipeline
The localized thermal conductivity of soil around fiber sensor；
The mass flow of m --- pipeline internal medium；
The specific heat capacity of c --- pipeline internal medium；
T1--- the temperature of pipeline internal medium at the first position of pipeline；
T2--- positioned at the temperature of the second place pipeline internal medium in the first position downstream of pipeline；
The distance between first position and the second position of L --- pipeline；
R --- the distance between first sampled point and the pipeline center of circle on the temperature-measuring optical fiber sensor；
Ti--- the temperature of soil at the first sampled point；
Δ r --- the distance between second sampled point and the first sampled point on the temperature-measuring optical fiber sensor；
Ti' --- the temperature of soil at the second sampled point.
3. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 1, described
The thermal coefficient of soil includes the mean coefficient of heat conductivity of soil, and the data processor obtains the mean coefficient of heat conductivity of the soil
The calculation formula of use are as follows:
In formula,
The mean coefficient of heat conductivity of soil between the first position and the second position of λ --- pipeline
The mass flow of m --- pipeline internal medium；
The specific heat capacity of c --- pipeline internal medium；
T1--- the temperature of pipeline internal medium at the first position of pipeline；
T2--- positioned at the temperature of the second place pipeline internal medium in the first position downstream of pipeline；
The distance between first position and the second position of L --- pipeline；
The buried depth of h --- pipeline；
The outer diameter of D --- pipeline；
Tbi--- the mean temperature of pipeline outer wall；
T0--- the natural temperature of the soil at the buried depth of pipeline.
4. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 1, special
Sign is that the outside of multiple temperature-measuring optical fiber sensors is provided with armor.
5. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 1, special
Sign is, further includes multiple vertical bars；
The quantity of the vertical bar is identical as the quantity of the temperature-measuring optical fiber sensor；
The upper end of multiple vertical bars is connect with the cross bar, and the temperature measuring optical is provided in each described vertical bar
Fiber sensor.
6. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 5, special
Sign is that each described temperature-measuring optical fiber sensor is wrapped in the corresponding vertical bar.
7. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 5, special
Sign is that the material of the vertical bar is atactic copolymerized polypropene.
8. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 5, special
Sign is that the cross bar is detachably connected with multiple vertical bars.
9. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 1, special
Sign is, from the first end of the cross bar to second end, the distance between two adjacent temperature-measuring optical fiber sensors are gradually increased.
10. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 9, special
Sign is, from the first end of the cross bar, the length of first temperature-measuring optical fiber sensor is most short.
11. the monitoring instrument of the thermal coefficient in the temperature field and soil of pipeline soil according to claim 10,
It is characterized in that, from the first end of the cross bar, second temperature-measuring optical fiber sensor and first temperature-measuring optical fiber are passed
The distance between sensor is greater than the half of the oil pipeline outer diameter.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624227A (en) * | 2020-06-17 | 2020-09-04 | 南京大学 | Distributed soil body heat conductivity coefficient test system and test method thereof |
| CN112697301A (en) * | 2021-01-27 | 2021-04-23 | 南京嘉兆仪器设备有限公司 | Fully-distributed pipeline erosion monitoring system and method based on optical fiber sensing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202101790U (en) * | 2011-06-15 | 2012-01-04 | 东北石油大学 | System for testing temperature distribution of soil surrounding buried hot oil pipeline |
| CN104007134A (en) * | 2014-05-23 | 2014-08-27 | 中国石油化工股份有限公司 | Temperature measurement system for thermal medium conveying pipeline and laying environment thereof |
| CN104596576A (en) * | 2014-12-26 | 2015-05-06 | 中国石油天然气集团公司 | Optical fiber temperature sensing and vibration sensing collineation fusion system and monitoring method |
-
2017
- 2017-11-29 CN CN201711226841.4A patent/CN109839209A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202101790U (en) * | 2011-06-15 | 2012-01-04 | 东北石油大学 | System for testing temperature distribution of soil surrounding buried hot oil pipeline |
| CN104007134A (en) * | 2014-05-23 | 2014-08-27 | 中国石油化工股份有限公司 | Temperature measurement system for thermal medium conveying pipeline and laying environment thereof |
| CN104596576A (en) * | 2014-12-26 | 2015-05-06 | 中国石油天然气集团公司 | Optical fiber temperature sensing and vibration sensing collineation fusion system and monitoring method |
Non-Patent Citations (3)
| Title |
|---|
| B.M.阿卡帕金等: "《原油和油品管道的热力与水力计算》", 30 November 1986, 石油工业出版社 * |
| 丁仁山: "并行埋地管道周围土壤温度场分区模拟研究", 《辽宁化工》 * |
| 崔慧: "埋地热油管道总传热系数的研究", 《油气储运》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624227A (en) * | 2020-06-17 | 2020-09-04 | 南京大学 | Distributed soil body heat conductivity coefficient test system and test method thereof |
| CN112697301A (en) * | 2021-01-27 | 2021-04-23 | 南京嘉兆仪器设备有限公司 | Fully-distributed pipeline erosion monitoring system and method based on optical fiber sensing |
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