CN112856237B

CN112856237B - Method and device for positioning gas column in gathering and transportation pipeline and storage medium

Info

Publication number: CN112856237B
Application number: CN201911176165.3A
Authority: CN
Inventors: 李旺; 梁俊; 樊迪; 黄立宇; 宫敬; 张思杨; 陈莎; 马振; 陈小华
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2022-10-04
Anticipated expiration: 2039-11-26
Also published as: CN112856237A

Abstract

The application discloses a positioning method and device for a gas column in a gathering and transportation pipeline and a storage medium, and belongs to the field of pipeline production. The method comprises the steps of obtaining the pipe diameter of a gathering and transportation pipeline, the flow rate, the viscosity and the density of fluid, and the mass, the unit pressure drop, the actual pressure and the theoretical pressure of a gas column in a target U-shaped pipe section, so that the length and the density of the gas column and the central angle of the fluid can be determined based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column, the length and the density of the gas column and the central angle of the fluid, the pressure of the upstream end of the gas column is determined based on the obtained length, the obtained density, the obtained central angle of the fluid and the current ambient temperature, and the position information of the upstream end of the gas column is searched based on the pressure, so that the position of the gas column in the target U-shaped pipe section is determined, and the exhaust of the target U-shaped pipe section is facilitated.

Description

Method and device for positioning gas column in gathering and transportation pipeline and storage medium

Technical Field

The application relates to the technical field of pipeline production, in particular to a positioning method and device for a gas column in a gathering and transportation pipeline and a storage medium.

Background

When the gathering and transportation pipeline is put into production, the gathering and transportation pipeline needs to be transported in a full-line water combined mode so as to remove residues in the gathering and transportation pipeline. Wherein, the whole-line water combined transportation means that the gathering and transportation pipeline is filled with water in the whole line when the gathering and transportation pipeline is put into production. When the gathering and transportation pipeline carries out the all-line water combined transportation, a plurality of U-shaped pipe sections with large fall can exist in the gathering and transportation pipeline, and when water current turns over any one of the U-shaped pipe sections, the water current easily forms an air column with a certain length at the lower waveshape section of any one U-shaped pipe section due to the phenomenon of incomplete current. Since the buoyancy of the gas column will prevent the water flow from continuing to the upward slope of any one of the U-shaped pipe sections, and thus increase the resistance of the water flow, it is necessary to determine the position of the gas column in any one of the U-shaped pipe sections to achieve the discharge of the gas in the gathering and transportation pipeline.

Disclosure of Invention

The application provides a positioning method and device for a gas column in a gathering and transportation pipeline and a storage medium, which can solve the problem of determining the position of the gas column. The technical scheme is as follows:

in a first aspect, there is provided a method for locating a gas column in a gathering and transportation pipeline, the method comprising:

acquiring the pipe diameter of a gathering and transportation pipeline, and the flow, viscosity and density of fluid conveyed by the gathering and transportation pipeline;

acquiring the mass of a gas column in a target U-shaped pipe section on the gathering and transportation pipeline, and the unit pressure drop, the actual pressure and the theoretical pressure of the target U-shaped pipe section, wherein the unit pressure drop refers to the unit pressure drop of fluid when the fluid of a downward slope section of the target U-shaped pipe section is full, the theoretical pressure refers to the pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is full, and the actual pressure refers to the pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is not full;

determining the length and the density of the gas column and the central angle of the fluid based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure and the theoretical pressure, wherein the central angle is an angle corresponding to the liquid level of the fluid when the fluid of the downward slope section of the target U-shaped pipe section is not full;

determining a pressure at an upstream end of the gas column based on the length and density of the gas column, and a current ambient temperature and a central angle of the fluid;

and searching the position information corresponding to the pressure of the upstream end of the gas column in the pre-stored corresponding relation between the pressure and the position information on the target U-shaped pipe section, and determining the searched position information as the position information of the upstream end of the gas column.

Optionally, before the obtaining of the mass of the gas column in the target U-shaped pipe section on the gathering and transportation pipeline, and the unit pressure drop, the actual pressure, and the theoretical pressure of the target U-shaped pipe section, the method further includes:

acquiring the surface tension of the fluid, a first flow rate and a second flow rate, wherein the first flow rate refers to the speed of the fluid at the position of the gas column, and the second flow rate refers to the speed of the fluid at the downstream end of the gas column;

determining turbulent flow field kinetic energy of the fluid based on the pipe diameter of the gathering and transportation pipeline, the density, the surface tension, the first flow velocity and the second flow velocity of the fluid;

determining the crushing duration of the gas column based on the turbulent field kinetic energy and the turbulent field reference value;

and when the crushing time of the gas column is greater than the crushing time threshold, executing the step of acquiring the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column in the target U-shaped pipe section.

Optionally, before determining the crushing duration of the gas column based on the turbulent field kinetic energy and the turbulent field reference value, the method further includes:

acquiring mileage information and elevation information of the target U-shaped pipe section;

and determining a turbulent flow field reference value of the fluid based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density, the surface tension, the first flow velocity and the second flow velocity of the fluid.

Optionally, before obtaining the pipe diameter of the gathering and transportation pipeline, and the flow rate, viscosity, and density of the fluid transported by the gathering and transportation pipeline, the method further includes:

determining the slope angle of a downhill section of the target U-shaped pipe section based on the mileage information and the elevation information of the target U-shaped pipe section;

and when the gradient angle is larger than the gradient threshold value, executing the step of acquiring the pipe diameter of the gathering and transportation pipeline and the flow, viscosity and density of the fluid conveyed by the gathering and transportation pipeline.

Optionally, after determining the located position information as the position information of the upstream end of the gas column, the method further includes:

determining position information of a downstream end of the gas column based on the position information of the upstream end of the gas column and the length of the gas column.

In a second aspect, there is provided a device for locating a gas column in a gathering and transportation pipeline, the device comprising:

the first acquisition module is used for acquiring the pipe diameter of a gathering and transportation pipeline and the flow, viscosity and density of fluid conveyed by the gathering and transportation pipeline;

a second obtaining module, configured to obtain a mass of a gas column in a target U-shaped pipe section on the gathering and transportation pipeline, and a unit pressure drop, an actual pressure, and a theoretical pressure of the target U-shaped pipe section, where the unit pressure drop is a unit pressure drop of a fluid when a fluid of a downward slope section of the target U-shaped pipe section is full, the theoretical pressure is a pressure at a downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is full, and the actual pressure is a pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is not full;

the first determining module is used for determining the length and the density of the gas column and the central angle of the fluid based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure and the theoretical pressure, wherein the central angle is an angle corresponding to the liquid level of the fluid when the fluid in the downward slope section of the target U-shaped pipe section is not full;

a second determination module for determining a pressure at an upstream end of the gas column based on the length and density of the gas column, and a current ambient temperature and a central angle of the fluid;

and the third determining module is used for searching the position information corresponding to the pressure of the upstream end of the gas column in the pre-stored corresponding relation between the pressure and the position information on the target U-shaped pipe section and determining the searched position information as the position information of the upstream end of the gas column.

Optionally, the apparatus further comprises:

the third acquisition module is used for acquiring the surface tension of the fluid, a first flow rate and a second flow rate, wherein the first flow rate refers to the velocity of the fluid at the position of the air column, and the second flow rate refers to the velocity of the fluid at the downstream end of the air column;

the fourth determining module is used for determining the turbulent kinetic energy of the fluid based on the pipe diameter of the gathering and transportation pipeline, the density, the surface tension, the first flow velocity and the second flow velocity of the fluid;

the fifth determining module is used for determining the crushing duration of the gas column based on the turbulent field kinetic energy and the turbulent field reference value;

and the first execution module is used for executing the step of acquiring the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column in the target U-shaped pipe section when the crushing time of the gas column is greater than the crushing time threshold.

Optionally, the apparatus further comprises:

the fourth acquisition module is used for acquiring mileage information and elevation information of the target U-shaped pipe section;

and the sixth determining module is used for determining a turbulent field reference value of the fluid based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density of the fluid, the surface tension, the first flow velocity and the second flow velocity.

Optionally, the apparatus further comprises:

the fifth acquisition module is used for acquiring mileage information and elevation information of the target U-shaped pipe section;

the seventh determining module is used for determining the slope angle of the downward slope section of the target U-shaped pipe section based on the mileage information and the elevation information of the target U-shaped pipe section;

and the second execution module is used for executing the steps of acquiring the pipe diameter of the gathering and transportation pipeline and the flow rate, viscosity and density of the fluid conveyed by the gathering and transportation pipeline when the gradient angle is larger than the gradient threshold value.

Optionally, the apparatus further comprises:

an eighth determination module to determine position information of a downstream end of the gas column based on the position information of the upstream end of the gas column and the length of the gas column.

In a third aspect, a computer-readable storage medium is provided, in which a computer program is stored, and the computer program, when executed by a processor, implements any one of the methods provided in the first aspect.

In a fourth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform any of the methods provided in the first aspect.

The beneficial effects that technical scheme that this application provided brought can include at least:

the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of fluid, and the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column in the target U-shaped pipe section are obtained, so that the length and the density of the gas column and the central angle of the fluid can be determined based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column, the length and the density of the gas column and the central angle of the fluid, and the current ambient temperature, the pressure of the upstream end of the gas column is determined based on the obtained length, the density, the central angle of the fluid and the current ambient temperature, and the position information of the upstream end of the gas column is searched based on the pressure, so that the position of the gas column in the target U-shaped pipe section is determined, and the exhaust of the target U-shaped pipe section is facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic flow chart of a positioning method for a gas column in a gathering and transportation pipeline according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of another positioning method for a gas column in a gathering and transportation pipeline according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of a target U-shaped pipe section at the location of a gas column according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a positioning device for an air column in a gathering and transportation pipeline according to an embodiment of the present application;

fig. 5 is a block diagram of a terminal according to the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic flow chart of a positioning method for an air column in a gathering and transportation pipeline according to an embodiment of the present application, where the method is applied to an electronic device, and the electronic device may be a computer, a mobile phone, a palm computer, a tablet computer, or the like. Referring to fig. 1, the method includes the following steps.

Step 101: and acquiring the pipe diameter of the gathering and transporting pipeline, and the flow, viscosity and density of the fluid transported by the gathering and transporting pipeline.

Step 102: the method comprises the steps of obtaining the mass of a gas column in a target U-shaped pipe section on a gathering and transportation pipeline, and the unit pressure drop, the actual pressure and the theoretical pressure of the target U-shaped pipe section, wherein the unit pressure drop refers to the unit pressure drop of fluid when the fluid of a downward slope section of the target U-shaped pipe section is full, the theoretical pressure refers to the pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is full, and the actual pressure refers to the pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is not full.

Step 103: and determining the length and the density of the gas column and the central angle of the fluid based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure and the theoretical pressure, wherein the central angle refers to the angle corresponding to the liquid level of the fluid when the fluid in the downhill section of the target U-shaped pipe section is not full.

Step 104: the pressure at the upstream end of the gas column is determined based on the length and density of the gas column, as well as the current ambient temperature and the central angle of the fluid.

Step 105: and searching the position information corresponding to the pressure of the upstream end of the gas column in the corresponding relation between the pressure and the position information on the pre-stored target U-shaped pipe section, and determining the searched position information as the position information of the upstream end of the gas column.

In the embodiment of the application, the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, and the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column in the target U-shaped pipe section are obtained, so that the length and the density of the gas column and the central angle of the fluid can be determined based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass, the unit pressure drop, the actual pressure and the theoretical pressure of the gas column, the length and the density of the gas column and the central angle of the fluid, and the current environment temperature, the pressure of the upstream end of the gas column is determined based on the obtained length, the density and the central angle of the fluid of the gas column, and the position information of the upstream end of the gas column is searched based on the pressure, so that the position of the gas column in the target U-shaped pipe section is determined, and the exhaust of the target U-shaped pipe section is facilitated.

Optionally, before obtaining the mass of the gas column in the target U-shaped pipe section on the gathering and transportation pipeline, and the unit pressure drop, the actual pressure, and the theoretical pressure of the target U-shaped pipe section, the method further includes:

determining the turbulent kinetic energy of the fluid based on the pipe diameter of the gathering and transportation pipeline, the density, the surface tension, the first flow velocity and the second flow velocity of the fluid;

acquiring mileage information and elevation information of a target U-shaped pipe section;

and determining a turbulent flow field reference value of the fluid based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density and the surface tension of the fluid, the first flow velocity and the second flow velocity.

Optionally, before obtaining the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity, and the density of the fluid transported by the gathering and transportation pipeline, the method further includes:

determining the slope angle of the downhill section of the target U-shaped pipe section based on the mileage information and the elevation information of the target U-shaped pipe section;

and when the gradient angle is larger than the gradient threshold value, executing the step of acquiring the pipe diameter of the gathering and transportation pipeline, and the flow, the viscosity and the density of the fluid conveyed by the gathering and transportation pipeline.

Optionally, after determining the searched position information as the position information of the upstream end of the gas column, the method further includes:

the position information of the downstream end of the gas column is determined based on the position information of the upstream end of the gas column and the length of the gas column.

All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present application, and the present application embodiment is not described in detail again.

Fig. 2 is a schematic flowchart of a method for positioning an air column in a gathering and transportation pipeline according to an embodiment of the present application, where the method is applied to an electronic device, and the electronic device may be a computer, a mobile phone, a palm computer, a tablet computer, or the like. Referring to fig. 2, the method includes the following steps.

When the gathering and transportation pipeline is used for full-line water combined transportation, a plurality of U-shaped pipe sections with large fall can exist in the gathering and transportation pipeline due to the fact that the gathering and transportation pipeline is adaptive to terrain factors, and when water flows cross each U-shaped pipe section in the plurality of U-shaped pipe sections, the water flows easily form an air column with a certain length in a lower wave section due to the phenomenon that the water flows incompletely. And the slope of partial U-shaped pipe section is relatively gentle because of the downhill path section, makes this partial U-shaped pipe section's downhill path section can not form the gas column. Therefore, when positioning the air column formed in the plurality of U-shaped pipe sections, it is possible to determine whether or not the air column is formed in the plurality of U-shaped pipe sections. Since each U-shaped pipe section is determined in the same manner, the target U-shaped pipe section will be described as an example, that is, when positioning the air column formed in the target U-shaped pipe section, it may be determined whether there is an air column in the target U-shaped pipe section through the following steps 201 to 203.

Step 201: and acquiring mileage information and elevation information of the target U-shaped pipe section.

Whether the air column is formed in the target U-shaped pipe section or not is related to the slope angle of the downhill section of the target U-shaped pipe section, and the slope angle is related to the mileage information and the height information of the U-shaped pipe section, so that the mileage information and the elevation information of the target U-shaped pipe section can be obtained.

After the gathering and transportation pipeline is laid, the gathering and transportation pipeline is marked along the line, and marked information is stored. That is, the mileage value and the elevation value corresponding to each position point along the gathering and transportation pipeline are stored in advance. In addition, the mileage information of the target U-shaped pipe section may include a mileage value at an upstream end and a mileage value at a downstream end of a downhill section of the target U-shaped pipe section, and the elevation information of the target U-shaped pipe section may include an elevation value at an upstream end and an elevation value at a downstream end of a downhill section of the target U-shaped pipe section. Therefore, the mileage value and the elevation value of the upstream end can be determined based on the coordinates of the upstream end of the downhill section of the target U-shaped pipe section, and the mileage value and the elevation value of the downstream end can be determined based on the coordinates of the downstream end of the downhill section of the target U-shaped pipe section, so that the mileage information and the elevation information of the target U-shaped pipe section can be obtained.

The descending section is a section of the target U-shaped pipe section which inclines downwards along the water flow direction, the upstream end is the end, to which the water flow in the descending section reaches first, of the pipe section, and the downstream section is the end, to which the water flow in the descending section reaches later, of the pipe section.

It should be noted that, in addition to the above-mentioned manner of obtaining the mileage information and the elevation information of the target U-shaped pipe section, the mileage information and the elevation information of the target U-shaped pipe section may also be obtained in other manners, which is not limited in this application.

It should be further noted that the mileage information of the target U-shaped pipe section may include, in addition to the mileage value at the upstream end and the mileage value at the downstream end of the downhill section of the target U-shaped pipe section, the mileage information of the target U-shaped pipe section may further include a mileage value at any position point on the downhill section of the target U-shaped pipe section, the elevation information of the target U-shaped pipe section may include, in addition to the elevation value at the upstream end and the elevation value at the downstream end of the downhill section of the target U-shaped pipe section, and the elevation information of the target U-shaped pipe section may further include an elevation value at any position point on the downhill section of the target U-shaped pipe section. The method for acquiring the mileage value and the elevation value at any position point may be the method for acquiring the mileage value and the elevation value at the upstream end of the downhill section of the target U-shaped pipe section, which is not described herein again in this embodiment of the present application.

Step 202: and determining the slope angle of the downhill section of the target U-shaped pipe section based on the mileage information and the elevation information of the target U-shaped pipe section.

After obtaining the mileage information and the elevation information of the target U-shaped pipe section, in some embodiments, an elevation difference between an elevation value of an upstream end and an elevation value of a downstream end of a downhill section included in the elevation information of the target U-shaped pipe section may be determined, a mileage difference between a mileage value of an upstream end and a mileage value of a downstream end of a downhill section included in the mileage information of the target U-shaped pipe section is determined, then, an inverse cosine function calculation is performed on a ratio between an absolute value of the elevation difference and an absolute value of the mileage difference to determine an included angle between a right-angle side corresponding to the absolute value of the elevation difference and a hypotenuse side corresponding to the absolute value of the mileage difference in the right-angled triangle, and a difference between a 90-degree angle and the included angle is approximately determined as a slope angle of the downhill section of the target U-shaped pipe section.

Of course, the slope angle of the downward slope section of the target U-shaped pipe section may be determined in other ways besides the above manner, which is not limited in the embodiment of the present application.

Step 203: and when the slope angle is larger than the slope threshold value, determining that an air column exists in the downhill section of the target U-shaped pipe section.

Wherein, the gradient threshold value refers to the preset maximum gradient angle of the downward gradient section of the U-shaped pipe section which is not considered to form the air column. For example, the grade threshold may be 65 degrees, 70 degrees, 75 degrees, or the like.

It should be noted that when the slope angle is smaller than or equal to the slope threshold, it indicates that there is no air column in the downhill section of the target U-shaped pipe section, and the operation may be ended.

When it is determined through the above steps 201 to 203 that there is a gas column in the downhill section of the target U-shaped pipe section, since it takes a certain time for the gas column to be broken by the fluid, when the time for the gas column to be broken by the fluid meets the requirement, the position of the gas column in the target U-shaped pipe section may not be determined. And the position of the gas column only needs to be determined when the duration of the fluid burst cannot meet the requirement. Specifically, it may be determined whether the duration of the fluid breakthrough through the gas column is satisfactory as follows from step 204 to step 207.

It should be noted that if it is determined that the gas column exists in the target U-shaped pipe section, the following steps 204-207 can be directly performed to determine whether the duration of the gas column being broken by the fluid is sufficient, and the above steps 201-203 are not required to be performed.

Step 204: and acquiring the pipe diameter of the gathering and transportation pipeline, and the flow, viscosity and density of the fluid conveyed by the gathering and transportation pipeline.

In some embodiments, a first parameter acquisition interface may be displayed, after which the pipe diameter of the gathering pipe and the flow rate, viscosity, and density of the fluid entered by the user in the first parameter acquisition interface may be acquired. That is, the user can input the pipe diameter of the gathering and transportation pipeline and the flow rate, viscosity and density of the fluid in the first parameter obtaining interface, so that the electronic device can obtain the parameters from the first parameter obtaining interface. Of course, the electronic device may also communicate with a storage device for such data to obtain the pipe diameter of the gathering pipe and the flow rate, viscosity, and density of the fluid from the storage device. The embodiment of the present application does not limit this.

The fluid conveyed by the gathering and transportation pipeline can be water flow or other fluids.

Step 205: surface tension, a first flow rate, and a second flow rate of the fluid are obtained.

Wherein the first flow rate is the velocity of the fluid at the location of the gas column and the second flow rate is the velocity of the fluid at the downstream end of the gas column.

It should be noted that, after the fluid forms the air column on the downhill section of the target U-shaped pipe section due to the insufficient flow, the air column stays in the downhill section of the target U-shaped pipe section due to the balance effect of the gas buoyancy and the water flow friction, at this time, when the fluid flows through the position of the air column, the flow area of the fluid decreases, and thus the flow velocity of the fluid increases, and when the fluid is located at the downstream end of the air column after flowing through the air column, the flow area of the fluid increases, and thus the flow velocity of the fluid decreases, so that the velocity of the fluid at the position of the air column is different from the velocity of the fluid at the downstream end of the air column, at this time, the velocity of the fluid at the position of the air column may be determined as the first flow velocity, and the velocity of the fluid at the downstream end of the air column may be determined as the second flow velocity.

Wherein, for the surface tension of the fluid, the second parameter acquisition interface may be displayed, and thereafter, the surface tension input by the user in the second parameter acquisition interface may be acquired. That is, the user may enter the surface tension in the second parameter acquisition interface so that the electronic device may acquire the parameters from the second parameter acquisition interface. Of course, the electronic device may also communicate with a storage device for such data to retrieve the surface tension from the storage device. The embodiment of the present application does not limit this.

For the second flow rate, the flow rate to the cross-sectional area of the target U-shaped pipe section may be determined, that is, the ratio between the flow rate and the cross-sectional area of the target U-shaped pipe section may be determined as the second flow rate.

For a first flow rate, since the flooded condition of the fluid in the target U-shaped pipe section is similar to that in the open channel flow, the flow rate of the fluid in the open channel flow can be determined approximately as the first flow rate at the location of the column of gas in the downhill section of the target U-shaped pipe section.

In some embodiments, the roughness of the inner wall of the gathering and transportation pipeline, that is, the roughness of the inner wall of the target U-shaped pipe section, may be obtained, and the roughness of the inner wall of the target U-shaped pipe section is approximated to the roughness of the open channel, the pipe diameter of the gathering and transportation pipeline obtained in step 204 is used as the pipe diameter of the open channel, the flow rate of the fluid transported by the gathering and transportation pipeline is obtained as the flow rate of the fluid in the open channel, the slope angle of the downhill slope of the target U-shaped pipe section obtained in step 202 is used as the slope angle of the open channel, the flow rate of the fluid in the open channel is determined by the open channel flow model, and the flow rate of the fluid in the open channel is approximated to the first flow rate.

In practical implementation, the flow velocity of the fluid in the open channel can be determined by the following formulas (1) to (4) in a combined manner based on the pipe diameter of the open channel, the flow rate of the fluid in the open channel, the inclination angle of the open channel and the roughness of the open channel:

wherein v is _l Is the flow velocity of the fluid in the open channel, n is the roughness of the open channel, A _l Is the flow area, S, of the fluid in the open channel _l Is the liquid phase wet circumference of the fluid in the open channel, alpha is the inclination angle of the open channel, d is the pipe diameter of the open channel, delta is the circumferential angle corresponding to the liquid phase wet circumference of the fluid in the open channel, Q _l Is the flow rate of the fluid in the open channel. Liquid phaseThe wet perimeter refers to the length of the open channel along which fluid in the open channel circumferentially contacts the open channel.

Step 206: and determining the turbulent kinetic energy of the fluid based on the pipe diameter of the gathering and transportation pipeline, the density of the fluid, the surface tension, the first flow velocity and the second flow velocity.

In some embodiments, the turbulent kinetic energy of the fluid can be calculated by the following formula (5) based on the pipe diameter of the gathering pipe, the density of the fluid, the surface tension, the first flow velocity, and the second flow velocity.

Wherein We is the kinetic energy of the turbulent flow field, rho _l Is the density of the fluid, σ is the surface tension of the fluid,

in order to achieve the first flow rate,

and D is the pipe diameter of the gathering and transportation pipeline at the second flow velocity.

Step 207: and determining the crushing duration of the gas column based on the turbulent field kinetic energy and the turbulent field reference value.

After the turbulent field kinetic energy of the fluid is obtained, the turbulent field kinetic energy and the turbulent field reference value can be subjected to difference, and the crushing time of the gas column is determined based on the absolute value of the obtained difference. The method for determining the crushing duration of the gas column based on the absolute value of the difference can refer to the related art, and details of the method are not repeated in the embodiments of the present application.

When the crushing time of the air column is longer than the crushing time threshold, the air column existing in the target U-shaped pipe section cannot be completely broken within the crushing time threshold. At this time, the position of the gas column existing in the target U-shaped pipe section can be determined according to steps 208 to 212 based on the pipe diameter of the gathering and transporting pipe, the flow rate, the viscosity and the density of the fluid transported by the gathering and transporting pipe, which are obtained in step 204. The crushing time threshold value can be the time of the whole-line water combined transportation, and can also be understood as the time of continuous water injection after the gathering and transportation pipeline is full. For example, the break duration threshold may be three days, five days, or a week.

It should be noted that when the crushing duration of the gas column is less than the crushing duration threshold, it indicates that the gas column present in the gathering pipe can be completely broken within the crushing duration threshold, and therefore, the operation can be ended without determining the position of the gas column in the target U-shaped pipe section.

Wherein, the turbulent flow field reference value refers to the critical value of the kinetic energy required by the fluid when the gas column is broken by the fluid.

In some embodiments, the turbulence field reference value for the fluid may be determined as follows.

Mileage information and elevation information of the target U-shaped pipe section have already been acquired due to the above step 201. Therefore, the step of acquiring mileage information and elevation information of the target U-shaped pipe section can be directly skipped, and the reference value of the turbulent flow field of the fluid is directly determined based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density of the fluid, the surface tension, the first flow velocity and the second flow velocity.

It should be noted that, when the step 204 is directly executed, the mileage information and the elevation information of the target U-shaped pipe section may be obtained first, and then the turbulence field reference value of the fluid is determined based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density of the fluid, the surface tension, the first flow velocity, and the second flow velocity.

Specifically, the slope angle of the downhill section may be determined based on the mileage information and the elevation information of the target U-shaped pipe section, and then the turbulent field reference value of the fluid may be determined through the simultaneous establishment of the following equations (6) to (9) based on the pipe diameter of the gathering and transportation pipe, the slope angle of the downhill section of the target U-shaped pipe section, the density of the fluid, the surface tension, the first flow rate, and the second flow rate:

where θ is the slope angle of the downhill section of the target U-shaped pipe section, θ' is the angle related to the slope angle of the downhill section of the target U-shaped pipe section, ρ _l Is the density of the fluid, p _g G is the density of gas under standard conditions, g is the gravitational acceleration, D is the pipe diameter of the gathering and transportation pipeline, sigma is the surface tension of the fluid, eo _D The number of ottos corresponding to the pipe diameter of the gathering and transportation pipeline d _max For the maximum bubble diameter, we' is the reference value of the turbulent flow field,

in order to achieve the first flow rate,

is the second flow rate.

In other embodiments, the turbulence field reference value of the fluid may be determined by equations (6), (7) and (9) above, and by the simultaneous determination of equation (10) below, based on the gathering pipe diameter, the slope angle of the down-slope section of the target U-shaped pipe section, the density of the fluid, the surface tension, the first flow rate and the second flow rate:

where θ' is the angle associated with the slope angle of the downhill section of the target U-shaped pipe section, ρ _l Is the density of the fluid, p _g G is the density of gas under standard conditions, g is the gravitational acceleration, D is the pipe diameter of the gathering and transportation pipeline, sigma is the surface tension of the fluid, eo _D The number of ottos corresponding to the pipe diameter of the gathering and transportation pipeline d _max The maximum bubble diameter.

Step 208: and acquiring the mass of the gas column in the target U-shaped pipe section on the gathering and transportation pipeline, and the unit pressure drop, the actual pressure and the theoretical pressure of the target U-shaped pipe section.

The unit pressure drop refers to the unit pressure drop of the fluid when the fluid of the downward slope section of the target U-shaped pipe section is full, the theoretical pressure refers to the pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is full, and the actual pressure refers to the pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is not full.

The volume of the downhill section of the target U-shaped pipe section can be determined based on the pipe diameter of the gathering and transportation pipeline and the length of the downhill section of the target U-shaped pipe section, and then the gas quality of the downhill section of the target U-shaped pipe section filled with the gas column can be determined through a density formula based on the gas density under the standard atmospheric pressure.

It should be noted that, because the mass of the gas is small, the mass of the gas filling the gas column in the downhill section of the target U-shaped pipe section can be approximately determined as the mass of the gas column in the target U-shaped pipe section.

For the actual pressure, after the actual pressure is detected by the pressure detection device, a third parameter acquisition interface may be displayed, and then the actual pressure input by the user in the third parameter acquisition interface may be acquired. That is, the user may input the actual pressure in the third parameter obtaining interface, so that the electronic device may obtain the parameters from the third parameter obtaining interface. Of course, the electronic device may also communicate with the pressure detection device to obtain the actual pressure from the pressure detection device. The embodiment of the present application does not limit this. The pressure detection device may be a pressure sensor or the like.

For unit pressure drop, the unit pressure drop can be determined by the following formula (11) based on the pipe diameter of the gathering and transportation pipeline, the flow rate and density of the fluid transported by the gathering and transportation pipeline, and the friction coefficient of the fluid in the gathering and transportation pipeline:

wherein p is _li In units of pressure drop, p _l The density of the fluid, Q the flow rate of the fluid, D the pipe diameter of the gathering and transporting pipeline and lambda the friction coefficient of the fluid in the gathering and transporting pipeline. The friction coefficient of the fluid in the gathering and transportation pipeline can be determined by referring to related technologies based on the flow state of the fluid in the gathering and transportation pipeline, for example, the friction coefficient can be obtained by consulting in oil pipeline engineering design specifications GB 50253-2014 based on the flow state of the fluid.

For the theoretical pressure, since the pressure of the downhill section of the target U-shaped pipe section at the time of full pipe linearly decreases, it can be determined based on the pressure of the upstream end of the downhill section of the target U-shaped pipe section and the total pressure drop of the downhill section of the target U-shaped pipe section.

Specifically, the method comprises the following steps: the pressure of the upstream end of the downhill section of the target U-shaped pipe section is obtained through pressure detection equipment, the mileage value of the upstream end of the downhill section of the target U-shaped pipe section is subtracted from the mileage value of the downstream end of the downhill section, the absolute value of the obtained difference is determined to be the length of the downhill section, the unit pressure drop calculated through the formula (11) is multiplied by the length of the downhill section to obtain the total pressure drop of the downhill section, then the pressure of the upstream end of the downhill section is subtracted from the total pressure drop of the downhill section, and the absolute value of the obtained difference is determined to be the pressure of the downstream end of the downhill section of the target U-shaped pipe section, namely the theoretical pressure.

Step 209: and determining the length and the density of the gas column and the central angle of the fluid based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure and the theoretical pressure.

The central angle refers to an angle corresponding to the liquid level of the fluid when the fluid of the downhill section of the target U-shaped pipe section is not full. That is, the central angle means the angle β as shown in fig. 3.

In some embodiments, the length of the gas column and the central angle of the fluid may be determined simultaneously by the following equations (12), (13) and (14) based on the pipe diameter of the gathering and transporting pipe, the flow rate, viscosity and density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure and the theoretical pressure:

wherein L is the length of the gas column, beta is the central angle of the fluid,

is the density of the gas column, Q is the flow of the fluid, D is the pipe diameter of the gathering and transportation pipeline, g is the acceleration of gravity, rho _l Theta is the slope angle of the down-slope section of the target U-shaped pipe section, mu, for the density of the fluid _l Is the viscosity of the fluid, p _li Is given as a unit of pressure drop, P _t ' theoretical pressure, P _t Is the actual pressure.

Step 210: the pressure at the upstream end of the gas column is determined based on the length and density of the gas column, as well as the current ambient temperature and the central angle of the fluid.

Wherein, the temperature of the current environment can be directly acquired through the temperature detection equipment.

In some embodiments, the pressure at the upstream end of the gas column may be determined concurrently by equations (15) and (16) below based on the length and density of the gas column, the current ambient temperature, the flow rate of the fluid, the pipe diameter of the gathering and delivery pipe, and the central angle of the fluid:

is the density of the gas column, Q is the flow rate of the fluid, D is the pipe diameter of the gathering and transportation pipeline, T is the current ambient temperature, R is the gas state constant,

is the mean pressure of the gas column, P _s Is the pressure at the upstream end of the gas column.

Step 211: and searching the position information corresponding to the pressure of the upstream end of the gas column in the pre-stored corresponding relation between the pressure and the position information on the target U-shaped pipe section, and determining the searched position information as the position information of the upstream end of the gas column.

Based on the pressure at the upstream end of the gas column determined in step 210, the corresponding position information may be searched from the stored correspondence between the pressure and the position information, and the position information may be determined as the position information at the upstream end of the gas column.

The position information may include a mileage value and an elevation value, that is, a correspondence relationship between the mileage value, the elevation value, and the pressure may be stored in advance. Therefore, according to the pressure at the upstream end of the gas column, the corresponding mileage value and elevation value can be searched from the corresponding relation among the mileage value, elevation value and pressure, and the determined mileage value and elevation value are used as the position information of the upstream end of the gas column.

It should be noted that, based on the above description, after acquiring the pressure at any position point on the downhill section of the target U-shaped pipe section, and the mileage value and the elevation value at any position point may be stored, so as to obtain the correspondence relationship among the mileage value, the elevation value, and the pressure.

The method includes the steps of displaying a fourth parameter acquisition interface, displaying a mileage value and an elevation value of any position point in the fourth parameter acquisition interface, and then acquiring pressure of any position point input by a user in the fourth parameter acquisition interface, so as to obtain the mileage value, the elevation value and the pressure of any position point. That is, the user may input the pressure at any position point in the fourth parameter obtaining interface, so that the electronic device may obtain the mileage value, the elevation value, and the pressure at any position point from the fourth parameter obtaining interface. The mileage value, the elevation value and the pressure at any one position are then stored in the corresponding relationship among the mileage value, the elevation value and the pressure.

Further, after determining the location information of the gas column within the target U-shaped tube section, the gas may be vented based on the location information of the gas column.

In some embodiments, an exhaust valve may be provided upstream of the upstream end of the gas column to exhaust the targeted U-shaped tubing section.

For example, the fluid delivery of the gathering pipe may be stopped to bring the fluid to a standstill. And then the exhaust valve is opened, and the friction force of the fluid to the air column disappears, so that the air column can move to the upstream end of the downhill section of the target U-shaped pipe section under the action of the buoyancy of the air column, and is exhausted from the exhaust valve, and the exhaust of the target U-shaped pipe section is realized.

It should be noted that, except for the implementation manner described above, the discharge of the gas column in the target U-shaped pipe section may also be implemented in other manners, which is not described in detail in the embodiments of the present application.

Step 212: the position information of the downstream end of the gas column is determined based on the position information of the upstream end of the gas column and the length of the gas column.

The mileage value included in the position information and the length value of the gas column can be summed, the value obtained after summation is determined as the mileage value of the downstream end of the gas column, and then the elevation value corresponding to the mileage value of the downstream end of the gas column is determined from the corresponding relation of the pressure, the mileage value and the elevation value on the pre-stored target U-shaped pipe section, so that the mileage value and the elevation value of the downstream end of the gas column are determined, and the position information of the downstream end of the gas column is obtained.

Further, after determining the position information of the downstream end of the gas column in the target U-shaped pipe section, a water injection valve may be further provided downstream of the downstream end of the gas column in order to facilitate the gas discharge of the gas column. Therefore, when the exhaust valve exhausts the target U-shaped pipe section, water can be injected into the downhill section of the target U-shaped pipe section through the water injection valve at the same time, so that the pressure of the injected water enables the gas column to move to the position of the exhaust valve more quickly, and the exhaust efficiency of the gas column can be improved.

In the embodiment of the application, the gradient of the downward slope section of the target U-shaped pipe section can be judged to determine whether the target U-shaped pipe section has the air column. After determining that the gas column is present, whether or not the gas is required to be exhausted may be determined by the length of time the gas column is broken within the target U-shaped pipe section. If the air exhaust is not needed, the blind air exhaust of the target U-shaped pipe section by the operator can be avoided, and therefore the workload of the operator is reduced. When the air needs to be exhausted, the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of fluid, the mass, the unit pressure drop, the actual pressure and the theoretical pressure of an air column in the target U-shaped pipe section can be obtained, the length and the density of the air column and the central angle of the fluid are determined, then the pressure of the upstream end of the air column is determined based on the length and the density of the air column, the central angle of the fluid and the current environment temperature, and then the position information of the upstream end of the air column is searched and determined, so that the position of the air column in the target U-shaped pipe section is determined, the air is conveniently exhausted from the target U-shaped pipe section, and the influence of resistance of the air column on the formation of the fluid on the whole-line water combined transportation is avoided.

Fig. 4 is a schematic structural diagram of a positioning device for an air column in a gathering and transportation pipeline according to an embodiment of the present application.

Referring to fig. 4, the apparatus includes:

the first obtaining module 401 is configured to obtain a pipe diameter of the gathering and transportation pipeline, and a flow rate, a viscosity, and a density of a fluid conveyed by the gathering and transportation pipeline;

a second obtaining module 402, configured to obtain a mass of a gas column in a target U-shaped pipe section on the gathering and transportation pipeline, a unit pressure drop, an actual pressure, and a theoretical pressure of the target U-shaped pipe section, where the unit pressure drop is a unit pressure drop of a fluid when the fluid of a downward slope section of the target U-shaped pipe section is full, the theoretical pressure is a pressure at a downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is full, and the actual pressure is a pressure at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is not full;

a first determining module 403, configured to determine the length and density of the gas column and a central angle of the fluid based on the pipe diameter of the gathering and transportation pipeline, the flow rate, viscosity, and density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure, and the theoretical pressure, where the central angle is an angle corresponding to a liquid level of the fluid when the fluid in a downhill section of the target U-shaped pipe section is not full of the fluid;

a second determination module 404 for determining a pressure at the upstream end of the gas column based on the length and density of the gas column, and the current ambient temperature and the central angle of the fluid;

a third determining module 405, configured to search for location information corresponding to the pressure at the upstream end of the gas column in a pre-stored correspondence between the pressure on the target U-shaped pipe segment and the location information, and determine the found location information as the location information of the upstream end of the gas column.

Optionally, the apparatus further comprises:

the fourth determining module is used for determining the turbulent flow field kinetic energy of the fluid based on the pipe diameter of the gathering and transportation pipeline, the density of the fluid, the surface tension, the first flow velocity and the second flow velocity;

Optionally, the apparatus further comprises:

and the sixth determining module is used for determining the turbulent flow field reference value of the fluid based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density of the fluid, the surface tension, the first flow velocity and the second flow velocity.

Optionally, the apparatus further comprises:

and the second execution module is used for executing the steps of acquiring the pipe diameter of the gathering and transportation pipeline and the flow, viscosity and density of the fluid conveyed by the gathering and transportation pipeline when the gradient angle is greater than the gradient threshold value.

Optionally, the apparatus further comprises:

an eighth determining module to determine the position information of the downstream end of the gas column based on the position information of the upstream end of the gas column and the length of the gas column.

It should be noted that: in the positioning device for an air column in a gathering and transportation pipeline provided in the above embodiment, when the position of the air column in the gathering and transportation pipeline is determined, only the division of the above functional modules is used for illustration, and in practical application, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the equipment is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the positioning device for the gas column in the gathering and transportation pipeline provided by the embodiment and the positioning method embodiment for the gas column in the gathering and transportation pipeline belong to the same concept, and the specific implementation process is described in the method embodiment and is not described herein again.

Fig. 5 illustrates a block diagram of a terminal 500 according to an exemplary embodiment of the present application. Referring to fig. 5, the terminal 500 may be: a smartphone, a tablet, a laptop, or a desktop computer. Terminal 500 may also be referred to by other names such as user equipment, portable terminal, laptop terminal, desktop terminal, and the like. Referring to fig. 5, a terminal 500 may include a processor 501 and a memory 502.

The processor 501 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 501 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 501 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 501 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 501 may further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.

Memory 502 may include one or more computer-readable storage media, which may be non-transitory. Memory 502 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 502 is used to store at least one instruction for execution by processor 501 to implement a method of locating a gas column in a gathering and transportation pipeline as provided by method embodiments herein.

In some embodiments, the terminal 500 may further optionally include: a peripheral interface 503 and at least one peripheral. The processor 501, memory 502 and peripheral interface 503 may be connected by a bus or signal lines. Various peripheral devices may be connected to the peripheral interface 503 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 504, display screen 505, positioning component 506, and power supply 507.

The peripheral interface 503 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 501 and the memory 502. In some embodiments, the processor 501, memory 502, and peripheral interface 503 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 501, the memory 502, and the peripheral interface 503 may be implemented on separate chips or circuit boards, which is not limited by the present embodiment.

The Radio Frequency circuit 504 is used to receive and transmit RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 504 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 504 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 504 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 504 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: the world wide web, metropolitan area networks, intranets, generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the rf circuit 504 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.

The display screen 505 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 505 is a display screen, the display screen 505 also has the ability to capture touch signals on or over the surface of the display screen 505. The touch signal may be input to the processor 501 as a control signal for processing. At this point, the display screen 505 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display screen 505 may be one, providing the front panel of the terminal 500; in other embodiments, the display screens 505 may be at least two, respectively disposed on different surfaces of the terminal 500 or in a folded design; in still other embodiments, the display 505 may be a flexible display disposed on a curved surface or on a folded surface of the terminal 500. Even more, the display screen 505 can be arranged in a non-rectangular irregular figure, i.e. a shaped screen. The Display screen 505 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and other materials.

The positioning component 506 is used for positioning the current geographic Location of the terminal 500 for navigation or LBS (Location Based Service). The Positioning component 506 can be a Positioning component based on the Global Positioning System (GPS) in the united states, the beidou System in china, or the galileo System in russia.

The power supply 507 is used to supply power to the various components in the terminal 500. The power supply 507 may be alternating current, direct current, disposable batteries, or rechargeable batteries. When the power supply 507 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.

Those skilled in the art will appreciate that the configuration shown in fig. 5 is not intended to be limiting of terminal 500 and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components may be used.

In the above embodiments, there is also provided a non-transitory computer-readable storage medium comprising instructions for storing at least one instruction for execution by a processor to implement the methods provided by the above embodiments of fig. 1 and 2.

Embodiments of the present application further provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform the method provided in the embodiment shown in fig. 1 or fig. 2.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method of locating a gas column in a gathering and transportation pipeline, the method comprising:

acquiring the mass of a gas column in a target U-shaped pipe section on the gathering and transportation pipeline, and a unit pressure drop, an actual pressure and a theoretical pressure of the target U-shaped pipe section, wherein the unit pressure drop refers to the unit pressure drop of fluid when the fluid of a downhill section of the target U-shaped pipe section is full, the theoretical pressure refers to the pressure at the downstream end of the downhill section when the fluid of the downhill section of the target U-shaped pipe section is full, and the actual pressure refers to the pressure at the downstream end of the downhill section when the fluid of the downhill section of the target U-shaped pipe section is not full;

2. The method of claim 1, wherein said obtaining a mass of a gas column within a target U-shaped tube section on said gathering conduit, and prior to said target U-shaped tube section's unit pressure drop, actual pressure, and theoretical pressure, further comprises:

determining a turbulent flow field reference value of the fluid based on the pipe diameter of the gathering and transportation pipeline, mileage information and elevation information of the target U-shaped pipe section, density, surface tension, a first flow velocity and a second flow velocity of the fluid;

3. The method of claim 1, wherein prior to obtaining the pipe diameter of the gathering pipe, the flow rate, viscosity, and density of the fluid transported by the gathering pipe, further comprising:

determining the slope angle of the downward slope section of the target U-shaped pipe section based on the mileage information and the elevation information of the target U-shaped pipe section;

4. The method of claim 1, wherein after determining the located position information as the position information of the upstream end of the gas column, further comprising:

5. A positioning device for a gas column in a gathering and transportation pipeline, the device comprising:

a second obtaining module, configured to obtain a mass, a unit pressure drop, an actual pressure, and a theoretical pressure of a gas column in a target U-shaped pipe section on the gathering and transportation pipeline, where the unit pressure drop is a unit pressure drop of a fluid when a fluid of a downward slope section of the target U-shaped pipe section is full, the theoretical pressure is a pressure detected at a downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is full, and the actual pressure is a pressure detected at the downstream end of the downward slope section when the fluid of the downward slope section of the target U-shaped pipe section is not full;

the first determining module is used for determining the length and the density of the gas column and the central angle of the fluid based on the pipe diameter of the gathering and transportation pipeline, the flow rate, the viscosity and the density of the fluid, the mass of the gas column, the unit pressure drop, the actual pressure and the theoretical pressure, wherein the central angle refers to the angle corresponding to the liquid level of the fluid when the fluid of the downhill section of the target U-shaped pipe section is not full;

6. The apparatus of claim 5, wherein the apparatus further comprises:

the third acquisition module is used for acquiring the surface tension of the fluid, a first flow rate and a second flow rate, wherein the first flow rate refers to the speed of the fluid at the position of the gas column, and the second flow rate refers to the speed of the fluid at the downstream end of the gas column;

the fifth determination module is used for determining a turbulent flow field reference value of the fluid based on the pipe diameter of the gathering and transportation pipeline, the mileage information and the elevation information of the target U-shaped pipe section, the density, the surface tension, the first flow velocity and the second flow velocity of the fluid;

the sixth determining module is used for determining the crushing time of the gas column based on the turbulent field kinetic energy and the turbulent field reference value;

7. The apparatus of claim 5, wherein the apparatus further comprises:

the seventh determining module is used for determining the slope angle of the downhill section of the target U-shaped pipe section based on the mileage information and the elevation information of the target U-shaped pipe section;

8. A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, which computer program, when being executed by a processor, carries out the method of any one of claims 1-4.