CN113624529B - A device and method for simulating and testing the heating performance of submarine pipeline electric heating cables - Google Patents
A device and method for simulating and testing the heating performance of submarine pipeline electric heating cables Download PDFInfo
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- CN113624529B CN113624529B CN202110888742.2A CN202110888742A CN113624529B CN 113624529 B CN113624529 B CN 113624529B CN 202110888742 A CN202110888742 A CN 202110888742A CN 113624529 B CN113624529 B CN 113624529B
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- 238000012360 testing method Methods 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 title claims description 30
- 238000005485 electric heating Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000009529 body temperature measurement Methods 0.000 claims abstract 4
- 239000013307 optical fiber Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 208000034423 Delivery Diseases 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 13
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 51
- 108010066057 cabin-1 Proteins 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 108010066278 cabin-4 Proteins 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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Abstract
The invention relates to a submarine pipeline electric tracing band heat tracing performance simulation test device and method, wherein the submarine pipeline electric tracing band heat tracing performance simulation test device comprises a pressure cabin, a pipeline test piece, a temperature measurement module, a first test pipeline, a second test pipeline and a blocking removal working condition simulation, wherein the pressure cabin is connected with external temperature control equipment to control the temperature of a medium in the pressure cabin, the pipeline test piece is arranged in the pressure cabin and is used for carrying out thermodynamic test, the electric tracing band is arranged on the pipeline test piece to carry out heat tracing, the temperature measurement module is arranged in the pipeline test piece and the pressure cabin and is used for transmitting detected temperature information to the external equipment, the first test pipeline is connected with the pressure cabin through the pipeline test piece to carry out normal conveying state working condition simulation, and the second test pipeline is connected with the pressure cabin through the pipeline test piece to carry out blocking removal working condition simulation. The invention can comprehensively test various performances of the electric tracing band heat tracing device when the electric tracing band heat tracing device runs under various working conditions in water. The invention can be widely applied in the technical field of petrochemical industry.
Description
Technical Field
The invention relates to the technical field of petrochemical industry, in particular to a device and a method for simulating and testing heat tracing performance of an electric tracing band of a submarine pipeline.
Background
Today, the demand for oil and gas is continuously increasing, and meanwhile, conventional oil and gas resources are increasingly exhausted, and unconventional thick oil resources are becoming the focus of attention. The offshore thick oil resource reserves are rich, but the problem of difficult transportation of the offshore thick oil exists. In order to solve the problems of transportation of extra thick oil and high-freezing oil at sea, prevention of wax precipitation, formation of hydrate and the like, and reduce the flow safety risk, a heat tracing technology is required to be researched to raise and control the temperature of a submarine pipeline.
The device comprises a wax oil preparation and loading and unloading system, a direct electric heating system and a measuring system. The heating power supply is directly connected with the test tube section to form a current loop together, and a plurality of sensors for collecting information are arranged on the test tube section. Direct current is fed into the wax-blocking pipeline, the underwater wax-containing crude oil pipeline is heated and blocked by utilizing a direct electric heating method, key data are recorded in real time by utilizing a sensor combination, and the blocking removal process and the pipeline transportation stopping temperature drop process can be simulated. However, since direct electric heating is to directly apply alternating current to the pipe wall, there is a risk of corrosion due to alternating current, and it is necessary to perform regular inspection and maintenance on corrosion protection.
Compared with the direct electric heating technology, the electric tracing band heat tracing technology has the advantages of high efficiency, safety and stability, long-term stable operation, suitability for conveying offshore oil and gas streams and better effect. Because the pipeline is subjected to the problems of lower temperature than land, higher water pressure and the like on the sea floor, the demand for carrying out heat tracing on the submarine pipeline by utilizing the electric heat tracing band is more urgent and the related demand is also more strict. However, in the petrochemical industry field, the medium-long distance electric tracing band heat tracing pipeline is mostly used on land, but the electric tracing band heat tracing pipeline has no case of being applied to the seabed, and has no corresponding testing device and technology for simulating and testing the heat tracing performance of the electric tracing band of the submarine pipeline, so that powerful support can not be provided for the application of the electric tracing band heat tracing technology to the submarine pipeline.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a submarine pipeline electric tracing band heat tracing performance simulation test device and method, which can comprehensively test various performances of the electric tracing band heat tracing device when the electric tracing band heat tracing band device runs under various working conditions in water.
In order to achieve the purpose, the invention adopts the following technical scheme that the device for simulating and testing the heat tracing performance of the submarine pipeline electric tracing band comprises:
The pressure cabin is connected with external temperature control equipment to control the temperature of medium in the pressure cabin;
the pipeline test piece is arranged in the pressure cabin and is used for performing thermodynamic tests;
The electric heat tracing band is arranged on the pipeline test piece for heat tracing;
the temperature measuring module is arranged in the pipeline test piece and the pressure cabin and transmits detected temperature information to external equipment;
the first test pipeline is connected with the pressure cabin through the pipeline test piece and is used for simulating the working condition of the normal conveying state;
and the second test pipeline is connected with the pressure cabin through the pipeline test piece and is used for simulating the working condition of the stop-conveying heat tracing state.
Preferably, the pressure chamber comprises:
A base;
The cabin body is arranged on the base;
The pipeline test piece is arranged in the cabin body in a penetrating way through the opening, sealing treatment is carried out between the opening and the pipeline test piece, and the two ends of the pipeline test piece extend to the outside of the cabin body to form an extension part;
The water inlet connecting pipe is arranged on the first flange plate at one end of the cabin body;
The drainage connecting pipe is arranged at one side of the bottom of the cabin body;
and adjusting the water level in the cabin body through the water inlet connecting pipe and the water outlet connecting pipe.
Preferably, the pressure cabin further comprises a safety valve and a pressure gauge, and the safety valve and the pressure gauge are arranged on the cabin body.
Preferably, the pipeline test piece comprises an inner pipe, an insulating layer and an outer pipe which are sequentially arranged from inside to outside;
The extension parts of the pipeline test pieces are respectively connected with the three-way valves through second flanges, the horizontal port part of each three-way valve is provided with a flange cover, and the vertical port part is used for being connected with the first test pipeline and the second test pipeline.
Preferably, the temperature measuring module includes:
The heating cable groove is arranged on the inner pipe, and the electric tracing band is arranged in the heating cable groove and can continuously adjust power;
The temperature measuring optical fibers are arranged on the outer wall of the inner tube at intervals and are used for measuring the temperature of the surface of the inner tube;
The thermocouple is arranged in a steel sleeve pipe which is preset in the inner pipe, and a temperature measuring probe of the thermocouple is directly contacted with the oil body and is used for directly testing the temperature of the oil body conveyed in the pipeline test piece;
the heat flow meter is embedded on the outer surface of the heat insulation layer at intervals and is used for measuring heat at the position;
and the power supply is connected with the electric tracing band, the temperature measuring optical fiber, the thermocouple and the heat flow meter and supplies power for all the components.
Preferably, the first test line includes:
an oil storage tank for storing and supplying oil bodies;
One end of the first valve is connected with the oil storage tank through a pipeline;
the input end of the screw pump is connected with the other end of the first valve through the pipeline;
One end of the second valve is connected with the output end of the screw pump through the pipeline, and the other end of the second valve is connected with the three-way valve at one end of the pipeline test piece through the pipeline;
One end of the third valve is connected with a three-way valve on the other end of the pipeline test piece through the pipeline;
And one end of the fourth valve is connected with the other end of the third valve through the pipeline, and the other end of the fourth valve is connected with the oil storage tank through the pipeline.
Preferably, a vent valve is connected in parallel to the pipeline between the third valve and the three-way valve at the other end of the pipeline test piece for venting or sampling.
Preferably, the second test line includes:
The screw pump;
A water storage tank for storing and supplying water and capable of cleaning the pipeline;
one end of the fifth valve is connected with the water storage tank through the pipeline, and the other end of the fifth valve is connected with the input end of the screw pump through the pipeline;
one end of the sixth valve is connected with the output end of the screw pump through the pipeline;
A seventh valve, one end of which is connected with the other end of the sixth valve through the pipeline;
One end of the eighth valve is connected with the other end of the seventh valve through the pipeline, and the other end of the eighth valve is connected with the water storage tank through the pipeline;
And one end of the centrifugal pump is connected with the water storage tank through the pipeline, and the other end of the centrifugal pump is connected with the oil storage tank.
Preferably, the testing device is used for simulating the unblocking state working condition and comprises the steps of closing all valves, cooling the oil temperature in a pipeline test piece, testing the change of an oil flow temperature field along with time by adjusting cable heat tracing power, and stopping the experiment when the oil temperature exceeds a preset value to finish the unblocking state working condition test.
The simulation test method for the heat tracing performance of the submarine pipeline electric tracing band is realized based on the device and comprises the steps of normal conveying test, stop conveying heat tracing test and unblocking test;
during normal delivery testing, the method comprises the following steps:
closing all valves and opening the bottom of the oil tank for heating;
Opening a first valve, starting a screw pump, and opening a second valve after waiting for a preset time;
opening a third valve and a fourth valve;
the screw pump is regulated to regulate the flow, and simultaneously, the power of the cable and the water temperature of the pressure cabin are regulated;
After the test piece reaches a thermal equilibrium state after running for a preset time, recording data;
when the heat tracing test is stopped, the method comprises the following steps:
Opening the bottom of the water tank for heating, closing the second valve, the third valve, the first valve and the fourth valve under the normal conveying condition, simultaneously opening the fifth valve, and opening the sixth valve after waiting for a preset time;
opening a seventh valve and an eighth valve;
recording the change of the oil flow temperature field along with time by adjusting the cable heat tracing power, and stopping the experiment when the oil temperature exceeds a preset value;
After standing, pumping the oil from the water tank to the oil tank by using a centrifugal pump;
During the unblocking test, the method comprises the following steps:
Closing all valves;
Under the condition that the oil temperature of the test piece is sufficiently cooled, the temperature field of the oil flow is tested for time variation by adjusting the heat tracing power of the cable, and when the oil temperature exceeds a preset value, the experiment is stopped, so that the work condition test of the unblocking state is completed.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. The invention is used for the simulation test of the heat tracing performance of the submarine pipeline electric tracing band, and fills the blank of the simulation test device and technology for the heat tracing performance of the submarine pipeline electric tracing band.
2. The invention is used for the simulation test of the heat tracing performance of the electric tracing band of the submarine pipeline, and can comprehensively test various performances of the electric tracing band heat tracing device when the electric tracing band heat tracing device operates under various working conditions in water, thereby reflecting the operation characteristics of the electric tracing band heat tracing device in the marine environment.
3. The invention is used for the simulation test of the heat tracing performance of the submarine pipeline electric tracing band, and the test device is simple, accurate and easy to operate.
Drawings
FIG. 1 is a schematic view of a pressure chamber in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a pipe test piece according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a test flow in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The invention provides a submarine pipeline electric tracing band heat tracing performance simulation test device which is applied to electric tracing bands of submarine oil and gas pipelines, and comprises a pressure cabin 1, a pipeline test piece 2, a power module, an electric tracing band, a temperature measuring module, a liquid storage tank, a temperature sensor, a pressure sensor, a flowmeter, a pipeline, a valve, a tee joint and a pump, wherein the pressure cabin 1 can be connected with temperature control equipment to control the temperature of internal media, the media comprise water and other liquids, the pipeline test piece 2 is soaked in the water in the pressure cabin 1, the media flowing in the pipeline test piece 2 comprise oil and gas, and the pipeline test piece 2 is placed with the electric tracing bands for heat tracing, and the thermodynamic properties of the pipeline test piece 2 and the pipeline are tested through a temperature measuring optical fiber 14, a thermocouple 15 and a heat flow meter 16. The invention can comprehensively test various performances of the electric tracing band heat tracing device when the electric tracing band heat tracing device runs under various working conditions in water.
In an embodiment of the present invention, as shown in fig. 1 to 3, a device for simulating and testing heat tracing performance of an electric tracing band of a submarine pipeline is provided, which comprises:
the pressure cabin 1 is connected with external temperature control equipment to control the temperature of the medium in the pressure cabin 1;
the pipeline test piece 2 is arranged in the pressure cabin 1 and is used for performing thermodynamic tests;
The electric heat tracing band is arranged on the pipeline test piece 2 for heat tracing;
The temperature measuring module is arranged in the pipeline test piece 2 and the pressure cabin 1 and transmits information such as detected temperature and the like to external equipment;
the first test pipeline is connected with the pressure cabin 1 through the pipeline test piece 2 and is used for simulating the working condition of the normal conveying state;
and the second test pipeline is connected with the pressure cabin 1 through the pipeline test piece 2 and is used for simulating the working condition of the stop-conveying heat tracing state.
In this embodiment, the test device provided by the invention can also simulate the unblocking state working condition.
In a preferred embodiment, as shown in FIG. 1, the pressure tank 1 comprises a base 3 and a tank body 4 provided on the base 3;
The pipeline test piece 2 is arranged in the cabin body 4 in a penetrating way through the open hole, sealing treatment is carried out between the open hole and the pipeline test piece 2, and two ends of the pipeline test piece 2 extend to the outside of the cabin body 4 to form an extension part 6;
The water inlet connecting pipe 7 is arranged on the first flange plate 5 at one end of the cabin body 4;
the drainage connecting pipe 8 is arranged at one side of the bottom of the cabin body 4;
the water level in the cabin 4 is regulated by a water inlet connection pipe 7 and a water outlet connection pipe 8.
In the above embodiment, the pressure chamber 1 further includes the safety valve 9 and the pressure gauge 10, and both the safety valve 9 and the pressure gauge 10 are provided on the chamber body 4.
In the above embodiment, as shown in fig. 2, the pipe test piece 2 includes an inner pipe 201, an insulation layer 202, an inner pipe gap 203, and an outer pipe 204 sequentially disposed from inside to outside, the extension portion 6 of the pipe test piece 2 is connected to the three-way valves 11 through second flanges, and a flange cover 12 is disposed at a horizontal port portion of each three-way valve 11, and a vertical port portion is used for connecting with the first test pipeline and the second test pipeline.
The pressure cabin 1 is integrally sealed and can be connected with temperature control equipment to control the temperature of internal media, the medium in the cabin body 4 is water, the water level can be adjusted through a water inlet connecting pipe 7 and a water outlet connecting pipe 8, the cabin body 4 can be placed on movable equipment through a base 3, a first flange 5 of the cabin body 4 can be opened from the outside of the cabin body 4, meanwhile, the first flange 5 is provided with a special treatment opening, a pipeline test piece 2 penetrates through the opening and is exposed to extend to form an extension part 6, the length of the extension part 6 is preferably 0.1 meter, the pipeline test piece 2 is soaked in the water in the pressure cabin 1, the pipeline test piece 2 is connected with a three-way valve 11 in a flange connection mode, the flowing direction of an oil body is changed through the three-way valve 11, the direction of the pipeline is changed into the direction perpendicular to the direction of the pipeline, and then the pipeline returns to the pipeline through a bent pipe.
In a preferred embodiment, the thermometry module comprises:
A heating cable slot 13 provided on the inner pipe 201, and an electric tracing band provided in the heating cable slot 13, the power being continuously adjustable;
The temperature measuring optical fibers 14 are arranged on the outer wall of the inner tube 201 at intervals and are used for measuring the temperature of the surface of the inner tube 201;
The thermocouple 15 is arranged in a steel sleeve pipe which is arranged in the inner pipe 201 in advance, and a temperature measuring probe of the thermocouple 15 is directly contacted with the oil body and is used for directly testing the temperature of the oil body conveyed in the pipeline test piece 2;
a heat flow meter 16, which is embedded on the outer surface of the heat insulation layer 202 at intervals, and is used for measuring heat at the place;
and a power supply connected with the electric tracing band, the temperature measuring optical fiber 14, the thermocouple 15 and the heat flow meter 16 for supplying power to all the components.
Specifically, as shown in fig. 2, 11 holes are formed in the second flange of the pipe test piece 2, and steel bushings are welded in the holes, so that the measuring rod of the thermocouple 15 can be placed in the steel bushings to prevent the measuring rod from sagging.
The heating cable slots 13 are arranged to be six, and 6 electric tracing bands are used for simultaneously tracing the heat of one pipeline test piece 2, wherein each electric tracing band comprises a heating core wire, a core wire insulation, an insulation sheath, a braiding layer and a reinforcing sheath layer which are sequentially arranged from inside to outside. The inner pipe 201 of the pipeline test piece 2 is connected with a heating cable groove 13, the heating cable groove 13 is also positioned in the heat insulation layer 202, an electric heat tracing band is arranged in the heating cable groove 13, and the electric heat tracing band is connected with a power supply and can continuously adjust power.
The temperature measuring module further comprises an optical fiber temperature measuring host, the optical fiber temperature measuring host is connected with a power supply and adopts an optical fiber temperature measuring mode, and the total number of the temperature measuring optical fibers 14 is 8, and the temperature measuring optical fibers are uniformly adhered to the outer wall of the inner tube 201 at intervals of 45 degrees and can be used for measuring the temperature of the surface of the inner tube 201.
The temperature measuring module further comprises a thermocouple 15 temperature measuring host, the thermocouple 15 comprises 11 temperature measuring probes and measuring rods, the measuring rods of the thermocouple 15 are placed in the steel sleeve to prevent the measuring rods from sagging, the temperature measuring probes are placed at 11 designated positions in the pipeline test piece 2 and directly contact with the oil body to directly test the temperature of the oil body conveyed in the pipeline test piece 2, and the thermocouple 15 temperature measuring host is connected with a power supply.
The temperature measuring module further comprises a heat flow meter 16 host, wherein the heat flow meter 16 comprises 4 wires and patches, the patches are embedded on the outer surface of the heat insulation layer 202 and uniformly placed at intervals of 90 degrees for measuring heat, the patches are connected with the heat flow meter 16 host through the wires, and the heat flow meter 16 host is connected with a power supply.
In a preferred embodiment, as shown in FIG. 3, the first test line comprises:
an oil tank 17 for storing and supplying oil bodies;
a first valve 18, one end of which is connected to the oil tank 17 via a pipeline;
the input end of the screw pump 19 is connected with the other end of the first valve 18 through a pipeline;
One end of the second valve 20 is connected with the output end of the screw pump 19 through a pipeline, and the other end of the second valve is connected with the three-way valve 11 at one end of the pipeline test piece 2 through a pipeline;
One end of the third valve 21 is connected with the three-way valve 11 on the other end of the pipeline test piece 2 through a pipeline;
And a fourth valve 22, one end of which is connected to the other end of the third valve 21 via a pipeline, and the other end of the fourth valve 22 is connected to the oil tank 17 via a pipeline.
The second test line comprises a screw pump 19, and
A water storage tank 23 for storing and supplying water and capable of cleaning a pipeline;
a fifth valve 24, one end of which is connected with the water storage tank 23 through a pipeline, and the other end of which is connected with the input end of the screw pump 19 through a pipeline;
a sixth valve 25, one end of which is connected to the output end of the screw pump 19 via a pipeline;
A seventh valve 26, one end of which is connected to the other end of the sixth valve 25 via a pipeline;
An eighth valve 27, one end of which is connected with the other end of the seventh valve 26 through a pipeline, and the other end of the eighth valve 27 is connected with the water storage tank 23 through a pipeline;
one end of the centrifugal pump 28 is connected to the water storage tank 23 via a pipeline, and the other end of the centrifugal pump 28 is connected to the oil storage tank 17.
In the above embodiment, the temperature sensor T and the pressure sensor P are disposed on the line at the other end of the second valve 20 and the line at the other end of the third valve 21;
A pressure sensor P is arranged on a pipeline at the input end of the screw pump 19;
a flow meter 29 is provided on the line at the output of the screw pump 19.
In the above embodiment, the vent valve 30 is connected in parallel to the line between the third valve 21 and the three-way valve 11 on the other end of the pipe test piece 2 for venting or sampling.
Specifically, the oil storage tank 17 comprises a tank body, a valve and a heating coil pipe, the temperature can be controlled through the heating coil pipe, the oil storage tank 17 is connected with a pipeline and a centrifugal pump 28 for storing and supplying oil bodies, the water storage tank 23 comprises a tank body, a valve and a heating coil pipe, the temperature can be controlled through the heating coil pipe, the water storage tank 23 is connected with the pipeline and the centrifugal pump 28 for storing and supplying water, and then the pipeline can be cleaned. A centrifugal pump 28 is connected to the oil tank 17 and the water tank 23, and a screw pump 19 is connected to the pipeline for supplying the pipeline with a delivery pressure.
A temperature sensor T is connected to the line for testing the temperature at the line, a pressure sensor P is connected to the line for testing the pressure at the line, and a flow meter 29 is connected to the line for testing the flow at the line. The valve is connected with the pipeline and is used for controlling the flow of the fluid medium at the corresponding pipeline.
In the embodiment, the working conditions comprise a normal conveying state, a stop conveying heat tracing state and a unblocking state, and the working processes are as follows:
During normal conveying test, the method comprises the following steps:
step one, closing all valves and opening the bottom of the oil tank for heating;
Step two, the first valve 18 is opened, the screw pump 19 is started, and the second valve 20 is opened after waiting for a preset time, wherein the preset time is preferably 5-10 seconds in the embodiment.
Step three, opening a third valve 21 and a fourth valve 22;
Regulating the screw pump to regulate the flow, and simultaneously regulating the power of the cable and the water temperature of the pressure cabin 1;
fifthly, after the test piece reaches a thermal equilibrium state after running for a preset time, recording data;
and step six, repeating the step four to the step five.
When the heat tracing test is stopped, the method comprises the following steps:
Step one, the bottom of the water tank is opened for heating, the second valve 20, the third valve 21, the first valve 18 and the fourth valve 22 are closed under the normal conveying condition, the fifth valve 24 is opened, and the sixth valve 25 is opened after waiting for a preset time, wherein the preset time is preferably 5-10 seconds in the embodiment.
Step two, opening a seventh valve 26 and an eighth valve 27;
Step three, recording the change of an oil flow temperature field along with time by adjusting cable heat tracing power, and stopping the experiment when the oil temperature exceeds 60 ℃;
step four, standing for a period of time, and then pumping the oil from the water tank to the oil tank by using a centrifugal pump 28;
And fifth, repeating the first step to the fourth step.
The blocking removal test comprises the following steps:
step one, closing all valves;
Step two, under the condition that the oil temperature of the test piece is sufficiently cooled, the change of the oil flow temperature field along with time is tested by adjusting the cable heat tracing power, and when the oil temperature exceeds 60 ℃, the experiment is stopped;
Step three, repeating the step two to finish the blocking removal state working condition test;
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (7)
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| CN202110888742.2A CN113624529B (en) | 2021-08-02 | 2021-08-02 | A device and method for simulating and testing the heating performance of submarine pipeline electric heating cables |
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| CN202110888742.2A CN113624529B (en) | 2021-08-02 | 2021-08-02 | A device and method for simulating and testing the heating performance of submarine pipeline electric heating cables |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201289204Y (en) * | 2008-09-22 | 2009-08-12 | 辽宁华孚石油高科技股份有限公司 | Ocean floor pipeline skin effect electric co-heating device |
| CN203595528U (en) * | 2013-11-27 | 2014-05-14 | 大连理工大学 | A deep water pressure chamber mixing experimental device |
| CN105156895A (en) * | 2015-09-10 | 2015-12-16 | 东北石油大学 | Gathering and transportation pipeline shutdown experimental simulation and radial temperature field testing device |
| CN108317396A (en) * | 2018-03-26 | 2018-07-24 | 北京石油化工学院 | Underwater crude oil pipeline paraffin blockage electrical heating releases simulator |
| CN215573805U (en) * | 2021-08-02 | 2022-01-18 | 中海石油(中国)有限公司 | Heat tracing performance simulation test device for electric heat tracing submarine pipeline |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196156B (en) * | 2019-03-12 | 2024-03-22 | 天津大学 | Deep sea pipeline complex load combined loading test method |
| CN111379974B (en) * | 2020-04-22 | 2024-08-13 | 大连海事大学 | Electrically heated deep-sea sunken ship oil extraction device and method |
-
2021
- 2021-08-02 CN CN202110888742.2A patent/CN113624529B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201289204Y (en) * | 2008-09-22 | 2009-08-12 | 辽宁华孚石油高科技股份有限公司 | Ocean floor pipeline skin effect electric co-heating device |
| CN203595528U (en) * | 2013-11-27 | 2014-05-14 | 大连理工大学 | A deep water pressure chamber mixing experimental device |
| CN105156895A (en) * | 2015-09-10 | 2015-12-16 | 东北石油大学 | Gathering and transportation pipeline shutdown experimental simulation and radial temperature field testing device |
| CN108317396A (en) * | 2018-03-26 | 2018-07-24 | 北京石油化工学院 | Underwater crude oil pipeline paraffin blockage electrical heating releases simulator |
| CN215573805U (en) * | 2021-08-02 | 2022-01-18 | 中海石油(中国)有限公司 | Heat tracing performance simulation test device for electric heat tracing submarine pipeline |
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