CN101750470A - Performance testing device for gas pipeline drag reduction agent - Google Patents
Performance testing device for gas pipeline drag reduction agent Download PDFInfo
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- CN101750470A CN101750470A CN200810240038A CN200810240038A CN101750470A CN 101750470 A CN101750470 A CN 101750470A CN 200810240038 A CN200810240038 A CN 200810240038A CN 200810240038 A CN200810240038 A CN 200810240038A CN 101750470 A CN101750470 A CN 101750470A
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- 239000007789 gas Substances 0.000 description 31
- 239000003638 reducing agent Substances 0.000 description 14
- 239000000047 product Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
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- 239000003345 natural gas Substances 0.000 description 1
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Abstract
The invention provides a performance testing device for gas pipeline drag reduction agent. The gas inlet end of a gas pipeline (10) to be tested is sequentially provided with a pipeline front end pressure sensor (9), a mass flow meter (8), a pressure regulating valve (7), a ball valve (6), and a temperature sensor (5) connected on a gas storage tank (4), wherein the gas storage tank (4) supplies gas through a compressor (3); and the gas outlet end of the gas pipeline (10) to be tested is sequentially provided with a pipeline back end pressure sensor (11), a ball valve (12) and a muffler (13). The invention is characterized in that the temperature sensor (5), the pipeline front end pressure sensor (9), the pipeline back end pressure sensor (11) and the mass flow meter (8) are respectively connected with the four intelligent regulating instruments of a data acquisition system (2), the data acquisition module of the data acquisition system (2) transmits the data to a computer (1), and the output of the computer (1) is connected with the pressure regulating valve (7) by an output control module.
Description
Technical field
The present invention is a kind of performance testing device for gas pipeline drag reduction agent.Relate to the piping system technical field.
Background technology
Rock gas is to pollute the energy minimum, that clean most.Therefore the proportion in primary energy improves the gas distributing system fast development rapidly.All there is bigger variation in each area, even Various Seasonal both at home and abroad to the demand of rock gas, and this just requires gas line network to have certain regulating power, and throughput rate especially increases sharply under safing condition.When gas stream during through pipeline, roughness can cause friction and then produce air whirl, cause energy loss, thereby cause the pressure loss of pipeline.The natural gas line that is in complete disturbed flow condition is carried, and the tube wall roughness has the greatest impact to friction factor, increase throughput rate and must reduce the tube wall roughness.So being conceived to reduce the gas pipeline drag reduction agent of tube wall roughness just arises at the historic moment.Yet how drag-reduction effect how to evaluate or multiple drag reducer compare the person that selects the excellent performance after drag reducer is applied to inner-walls of duct, just need a kind of measuring technology of science.Though the method for test is also arranged at present, all be that simpler, accuracy is not high by manual test.
Summary of the invention
The objective of the invention is to invent a kind of reliable, accurately, performance testing device for gas pipeline drag reduction agent that automaticity is high.
The present invention is based on indoor small-sized gas circuit and tests formation drag reducer molecular film on the inwall of pipeline section, friction loss when circuit is carried gas before and after mensuration and the comparison film forming, thereby determine whether chemical film can reduce the friction between fluid and the tube wall and play the drag reduction effect, further compare the drag reduction effect size of inhomogeneity chemicals.
" drag reduction " obviously is exactly to reduce friction loss, and friction loss is the friction loss that the viscous force by fluid causes.The size of this friction loss and the flow state of fluid have confidential relation.Know that by darcy-Si Bahe Wei (Darcy-Weisbach) formula the friction loss of the isometrical pipe of level is:
The internal diameter of the viscosity along journey coefficient of friction resistance λ and fluid in the formula, flow velocity, pipeline and tube wall roughness etc. are relevant, are dimensionless factors, are determined by experiment.By testing volume flow Q, temperature T, the pressure P that can record tube fluid, caliber d, measured tube segment length L and pressure drop Δ P thereof.Determine the density p and the viscosity, mu of tube fluid again according to correlation formula, can calculate, also can determine the roughness of pipeline according to relevant experimental formula along journey coefficient of friction resistance λ and reynolds number Re.
A) calculate the air viscosity coefficient by formula (1)
B) by formula (2) computer tube inner fluid density
In the formula: ρ
0---ideal gas is at standard state (P
0=1atm, T
0=density under 273K).
C) calculate second Reynolds number according to formula (3)
In the formula:
D: test pipeline section internal diameter m
K: selected pipeline section inner wall roughness μ m.
According to above-mentioned principle, this proving installation is to form the drag reducer molecular film on the inwall of indoor small-sized gas circuit test pipeline section, measures and the friction loss when compare test pipeline section conveying gas before and after the film forming.Exactly tested gas pipeline 10 is passed to pressurized air, the temperature of measurement gas, flow and the pressure imported and exported at tested pipeline section when pressurized air enters tested gas pipeline 10; According to said method,, can calculate the drag reducing efficiency of the drag reducer of surveying according to the result of twice test to each is tested once respectively before and after the tested gas pipeline drag reducer film forming.
Certainly the pipeline Reynolds number of used design here must be similar to commercial pipeline, and promptly Reynolds number must be greater than second critical Reynolds number in process of the test; The material of test pipeline section must be similar to commercial pipeline.
According to the above, formation of the present invention as shown in Figure 1.It is the same with prior art, also is made up of compressor 3, gas-holder 4, temperature sensor 5, pipeline forefront pressure sensor 9, pipe end pressure transducer 11, mass flowmeter 8, pressure regulator valve 7, ball valve 6 and ball valve 12.Pipeline forefront pressure sensor 9, mass flowmeter 8, pressure regulator valve 7, ball valve 6, temperature sensor 5 are installed on the inlet end pipeline of tested gas pipeline 10 successively, are connected on the gas-holder 4, pass through compressor 3 air feed on the gas-holder 4; Pipe end pressure transducer 11, ball valve 12 and exhaust box 13 are installed on the exhaust end pipeline of tested gas pipeline 10 successively.
In order to improve automaticity and to measure accurately, characteristics of the present invention are: temperature sensor 5, pipeline forefront pressure sensor 9, pipe end pressure transducer 11, mass flow sensor 8 are connected respectively on four automation control apparatus on the data acquisition system (DAS) 2.Four automation control apparatus on the data acquisition system (DAS) 2 show test datas, and by the data acquisition module on the data acquisition system (DAS) 2 with data transmission to computing machine 1.The output of computing machine 1 connects pressure-regulating valve 7 (see figure 2)s through output control module.
Temperature, pressure and data on flows are sent to computing machine 1 by data acquisition system (DAS) 2, are shown and storage by computing machine 1; And can set the force value of pipeline forefront pressure sensor 9 on the computing machine 1, the aperture by control pressure regulator valve 7 makes the force value of pipeline forefront pressure sensor 9 remain on setup pressure value.
The circuit theory of this performance testing device for gas pipeline drag reduction agent as shown in Figure 3.It is made up of to RS-422/485 converter ADAM-4520, analog quantity load module ADAM-4017, analog output module ADAM-4024 module, four XMT-8000 automation control apparatus of C1-C4,24V power supply S145 computing machine, isolation RS-232.Four XMT-8000 automation control apparatus of C1-C4 are respectively by adapter shown in Figure 3 road forefront pressure sensor, pipe end pressure transducer, Tube Temperature Sensor, mass flow sensor.The output terminal 2,3 of four XMT-8000 automation control apparatus of C1-C4 meets input end V0+, V0-, V1+, V1-, V2+, V2-, V4+, the V4-of analog quantity load module ADAM-4017 module respectively.The DATA+ of modules A DAM-4520, ADAM-4017, ADAM-4024, DATA-end is corresponding to be connected, modules A DAM-4520 output meets Computer I BM COMPUTER, the VS+ of ADAM-4520, ADAM-4017, ADAM-4024 module, GND termination 24V power supply S145+24 ,-24.
Take over four automation control apparatus of C1-C4 of road forefront pressure sensor 9, pipe end pressure transducer 11, Tube Temperature Sensor 5, mass flow sensor 8 the pipeline forefront pressure, pipe end pressure, pipe temperature, the mass rate simulating signal that receive are sent into analog quantity load module ADAM-4017, by converter ADAM-4520 the RS-232 conversion of signals being become to isolate the RS-485 signal then and deliver in the computing machine 1, is that digital signal shows and storage by computing machine with analog signal conversion.The force value of computer settings, be converted to simulating signal, the RS-485 conversion of signals become the RS-232 signal, be transported to analog output module ADAM-4024 simulation output then by converter ADAM-4520, connect pressure regulator valve 7 by IOUT3+, IOUT3-, control pressure regulator valve 7.
Wherein:
Pressure transducer, temperature sensor, mass flow sensor are conventional products;
The link block of data acquisition system (DAS) and computing machine is selected Adam's 4000 series of products, also can be replaced by the product of similar function;
Automation control apparatus selects the XMT-8000 series of products, also can be replaced by the product of similar function;
Computing machine selects for use microcomputer commonly used to get final product.
The inventive method is simple, and test is reliable, accurate, convenient; The device used unit is city's pin product, is easy to install, and the automaticity height, and comparatively simple, reliable.
Description of drawings
Fig. 1 rock gas drag reducer performance testing device constitutes synoptic diagram
Fig. 2 rock gas drag reducer performance testing device theory diagram
Fig. 3 rock gas drag reducer performance testing device data acquisition wiring diagram
1-computing machine 2-data acquisition system (DAS) wherein
3-compressor 4-gas-holder
5-temperature sensor 6-ball valve
7-pressure regulator valve 8-mass flowmeter
The tested pipeline section of 9-pipeline forefront pressure sensor 10-
11-pipe end pressure transducer 12-ball valve
The 13-exhaust box
Embodiment
Embodiment. this example is an experimental prototype, and it constitutes as shown in Figure 1.Whole device is by being made up of compressor 3, gas-holder 4, temperature sensor 5, pipeline forefront pressure sensor 9, pipe end pressure transducer 11, mass flowmeter 8, pressure regulator valve 7, ball valve 6 and ball valve 12.Pipeline forefront pressure sensor 9, mass flowmeter 8, pressure regulator valve 7, ball valve 6, temperature sensor 5 are installed on the inlet end pipeline of tested gas pipeline 10 successively to be connected on the gas-holder 4.Pass through compressor 3 air feed on the gas-holder 4.Pipe end pressure transducer 11, ball valve 12 and exhaust box 13 are installed on the exhaust end pipeline of tested gas pipeline 10 successively.
Temperature sensor 5, pipeline forefront pressure sensor 9, pipe end pressure transducer 11, mass flow sensor 8 are connected respectively on four automation control apparatus on the data acquisition control system 2.Four automation control apparatus on the data acquisition control system 2 show test datas, and by the data acquisition module on the data acquisition control system 2 with data transmission to computing machine 1.The output of computing machine 1 connects pressure-regulating valve 7 (see figure 2)s through output control module.
Line output control that computing machine 1 shows and storage data is gone forward side by side; Can set the force value of pipeline forefront pressure sensor 9 on the computing machine 1, make the force value of pipeline forefront pressure sensor 9 remain on setup pressure value by the aperture of controlling pressure regulator valve 7.
The data acquisition control wiring of this performance testing device for gas pipeline drag reduction agent as shown in Figure 3.Form to RS-422/485 converter ADAM-4520, analog quantity load module ADAM-4017, analog output module ADAM-4024 module, four XMT-8000 automation control apparatus of C1-C4,24V power supply S145 by computing machine, isolation RS-232.Four XMT-8000 automation control apparatus of C1-C4 are pressed respectively and are taken over road forefront pressure sensor, pipe end pressure transducer, Tube Temperature Sensor, mass flow sensor shown in the figure three.The output terminal 2,3 of four XMT-8000 automation control apparatus of C1-C4 meets input end V0+, V0-, V1+, V1-, V2+, V2-, V4+, the V4-of analog quantity load module ADAM-4017 module respectively.The DATA+ of modules A DAM-4520, ADAM-4017, ADAM-4024, DATA-end is corresponding to be connected, modules A DAM-4520 output meets Computer I BM COMPUTER, the VS+ of ADAM-4520, ADAM-4017, ADAM-4024 module, GND termination 24V power supply S145+24 ,-24.
4 ends of C1 and 12 ends take over respectively the output terminal of forefront pressure sensor 9+,-, 5 terminations, 13 ends; 4 ends of C2 and 12 ends take over respectively the output terminal of terminal pressure sensor 11+,-, 5 terminations, 13 ends; 4 terminations, 5 ends of C3 and take over the output terminal of channel temp sensor 5+, the output terminal of the 6 termination Tube Temperature Sensors 5 of C3-; 4 ends of C4 and 12 ends connect respectively the output terminal of mass flow sensor 8+,-, 5 terminations, 13 ends.
Take over four automation control apparatus of C1-C4 of road forefront pressure sensor 9, pipe end pressure transducer 11, Tube Temperature Sensor 5, mass flow sensor 8 the pipeline forefront pressure, pipe end pressure, pipe temperature, the mass rate simulating signal that receive are sent into analog quantity load module ADAM-4017, by converter ADAM-4520 the RS-232 conversion of signals being become to isolate the RS-485 signal then and deliver in the computing machine 1, is that digital signal shows and storage by computing machine with analog signal conversion.The force value of computer settings, be converted to simulating signal, the RS-485 conversion of signals become the RS-232 signal, be transported to analog output module ADAM-4024 simulation output then by converter ADAM-4520, connect pressure regulator valve 7 by IOUT3+, IOUT3-, control pressure regulator valve 7.
Product and the model specifically selected for use are:
Compressor 3: select V-0.6/40 for use, maximum operating pressure: 4MPa;
Gas-holder 4: jar appearance: 2m
3, maximum pressure-bearing: 4MPa;
Tested pipeline section 10: φ 16 * 2mm, material 20#, 6 meters are long;
Pipeline forefront pressure sensor 9, pipe end pressure transducer 11: select JYB-K0-HAG for use, supporting transmitter;
Temperature sensor 5: select YH-WEP-01 for use; Supporting transmitter;
Mass flowmeter 8: select the DMF-1-3 type for use, supporting transmitter can show instantaneous and the mass accumulation flow;
Pressure regulator valve 7: select the ZAZ sleeve adjusting valve for use, electronic control;
Data acquisition system (DAS) 2: intelligent object is selected Adam's 4000 series of products for use, isolates RS-232 and selects for use ADAM-4520, analog quantity load module to select for use ADAM-4017, analog output module to select ADAM-4024 for use to the RS-422/485 converter; Automation control apparatus selects the XMT-8000 series of products;
Computing machine 1: select the IBM brand for use.
Its method of testing is that tested gas pipeline section 10 is passed to pressurized air, temperature, flow and the front and back of measurement gas, the pressure of end when pressurized air enters tested gas pipeline section 10; According to said method,, can calculate the drag reducing efficiency of the drag reducer of surveying according to the result of twice test to each is tested once respectively before and after the tested gas pipeline section drag reducer film forming.
This device is when test, and its concrete operations flow process is:
1) with basic data test before the drag reducer
[1.1] drive compressor 3, to gas-holder 4 pressurisings;
[1.2] tested pipeline section 10 is installed on the proving installation;
[1.3] drive computing machine 1, set tested pipeline section 10 intake pressures;
[1.4] open ball valve 6 and ball valve 12;
[1.5] record temperature sensing transmitter, pressure sensing transmitter, mass flowmeter reading, data of per second record;
Close ball valve 6 and ball valve 12 after [1.6] two minutes;
2) with data test after the drag reducer
[2.1] tested pipeline section inwall is soaked the drag reducer film forming, fully soaked 1 minute;
[2.2] repeat [1.2]-[1.6];
3) calculate drag reducing efficiency according to following formula
In the formula: DR: drag reducing efficiency;
Δ P
0: the pressure drop of non-drag reduction condition underground pipelines frictional resistance, KPa;
Δ P
1: the pressure drop of drag reduction condition underground pipelines frictional resistance, KPa.
This example after tested, its method is simple, test is reliable, accurately, convenient; The device used unit is city pin product not all, is easy to install, and comparatively simple, reliable.
Claims (2)
1. performance testing device for gas pipeline drag reduction agent, it is by compressor (3), gas-holder (4), temperature sensor (5), pipeline forefront pressure sensor (9), pipe end pressure transducer (11), mass flowmeter (8), pressure regulator valve (7), ball valve (6) and ball valve (12) are formed, pipeline forefront pressure sensor (9) is installed on the inlet end pipeline of tested gas pipeline (10) successively, mass flowmeter (8), pressure regulator valve (7), ball valve (6), temperature sensor (5) is connected on the gas-holder (4), and gas-holder (4) is gone up by compressor (3) air feed; Pipe end pressure transducer (11), ball valve (12) and exhaust box (13) are installed on the exhaust end pipeline of tested gas pipeline (10) successively; It is characterized in that temperature sensor (5), pipeline forefront pressure sensor (9), pipe end pressure transducer (11), mass flow sensor (8) are connected respectively on four automation control apparatus on the data acquisition system (DAS) (2), and by the data acquisition module on the data acquisition system (DAS) (2) with data transmission to computing machine (1), the output of computing machine (1) connects pressure-regulating valve (7) through output control module;
Temperature, pressure and data on flows are sent to computing machine (1) by data acquisition system (DAS) (2), are shown and storage by computing machine (1); And can set the force value of pipeline forefront pressure sensor (9) on the computing machine (1), the aperture by control pressure regulator valve (7) makes the force value of pipeline forefront pressure sensor (9) remain on setup pressure value.
2. performance testing device for gas pipeline drag reduction agent according to claim 1, it is characterized in that it by computing machine (1), isolate RS-232 and form to RS-422/485 converter ADAM-4520, analog quantity load module ADAM-4017, analog output module ADAM-4024 module, four XMT-8000 automation control apparatus of C1-C4,24V power supply S145; Four XMT-8000 automation control apparatus of C1-C4 are taken over forefront pressure sensor (9), pipe end pressure transducer (11), Tube Temperature Sensor (5), mass flow sensor (8) respectively, and the output terminal of four XMT-8000 automation control apparatus of C1-C4 (2,3) meets input end (V0+, V0-), (V1+, V1-), (V2+, V2-), (V4+, the V4-) of analog quantity load module ADAM-4017 module respectively; The corresponding connection of (DATA+, DATA-) end of modules A DAM-4520, ADAM-4017, ADAM-4024, modules A DAM-4520 output meets Computer I BM COMPUTER, (+24 ,-24) of (VS+, GND) termination 24V power supply S145 of ADAM-4520, ADAM-4017, ADAM-4024 module;
Take over four automation control apparatus of C1-C4 of road forefront pressure sensor (9), pipe end pressure transducer (11), Tube Temperature Sensor (5), mass flow sensor (8) the pipeline forefront pressure, pipe end pressure, pipe temperature, the mass rate simulating signal that receive are sent into analog quantity load module ADAM-4017, by converter ADAM-4520 the RS-232 conversion of signals being become to isolate the RS-485 signal then and deliver in the computing machine (1), is that digital signal shows and storage by computing machine with analog signal conversion; The force value of computer settings, be converted to simulating signal, the RS-485 conversion of signals become the RS-232 signal, be transported to analog output module ADAM-4024 simulation output then by converter ADAM-4520, connect pressure regulator valve (7) by (IOUT3+, IOUT3-), control pressure regulator valve (7).
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|---|---|---|---|
| CN200810240038A CN101750470A (en) | 2008-12-17 | 2008-12-17 | Performance testing device for gas pipeline drag reduction agent |
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| CN200810240038A CN101750470A (en) | 2008-12-17 | 2008-12-17 | Performance testing device for gas pipeline drag reduction agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269330A (en) * | 2011-04-28 | 2011-12-07 | 煤炭科学研究总院重庆研究院 | Pressure controller for coal bed gas gathering and transportation pipeline |
| CN102435548A (en) * | 2011-09-05 | 2012-05-02 | 青岛理工大学 | Device for testing pipe resistance coefficient of water supply pipe network |
| CN103743583A (en) * | 2013-12-18 | 2014-04-23 | 南通太平洋海洋工程有限公司 | Natural gas conveying pipe system pressure test device |
| CN109387351A (en) * | 2018-12-21 | 2019-02-26 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of air-cooled flow resistance test method and device |
| CN110763265A (en) * | 2018-07-25 | 2020-02-07 | 中国石油化工股份有限公司 | System and method for testing atomization spraying effect of natural gas drag reducer |
| CN111220501A (en) * | 2019-12-04 | 2020-06-02 | 西南石油大学 | On-line evaluation method for drag reducer drag reduction effect in oil pipeline |
-
2008
- 2008-12-17 CN CN200810240038A patent/CN101750470A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269330A (en) * | 2011-04-28 | 2011-12-07 | 煤炭科学研究总院重庆研究院 | Pressure controller for coal bed gas gathering and transportation pipeline |
| CN102435548A (en) * | 2011-09-05 | 2012-05-02 | 青岛理工大学 | Device for testing pipe resistance coefficient of water supply pipe network |
| CN103743583A (en) * | 2013-12-18 | 2014-04-23 | 南通太平洋海洋工程有限公司 | Natural gas conveying pipe system pressure test device |
| CN103743583B (en) * | 2013-12-18 | 2016-08-17 | 南通太平洋海洋工程有限公司 | A kind of gas delivering pipe system pressure experimental device |
| CN110763265A (en) * | 2018-07-25 | 2020-02-07 | 中国石油化工股份有限公司 | System and method for testing atomization spraying effect of natural gas drag reducer |
| CN110763265B (en) * | 2018-07-25 | 2021-08-31 | 中国石油化工股份有限公司 | System and method for testing atomization spraying effect of natural gas drag reducer |
| CN109387351A (en) * | 2018-12-21 | 2019-02-26 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of air-cooled flow resistance test method and device |
| CN111220501A (en) * | 2019-12-04 | 2020-06-02 | 西南石油大学 | On-line evaluation method for drag reducer drag reduction effect in oil pipeline |
| CN111220501B (en) * | 2019-12-04 | 2022-04-29 | 西南石油大学 | On-line evaluation method for drag reducer drag reduction effect in oil pipeline |
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Application publication date: 20100623 |