CN116067834A - Gas rheological property testing equipment and using method thereof - Google Patents
Gas rheological property testing equipment and using method thereof Download PDFInfo
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- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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Abstract
The invention relates to the technical field of gas performance testing, and particularly discloses gas rheological property testing equipment and a using method thereof. The gas rheological property testing device comprises a main box body, a sample injection unit, a sample analysis unit, a vacuum generation unit and a temperature control unit. A metal pipeline and a test pipeline are arranged in the main box body, both ends of the test pipeline are communicated with the metal pipeline, and the test pipeline is detachably connected with the metal pipeline; one end of the sample injection unit, one end of the sample analysis unit and one end of the vacuum generation unit are all communicated with the metal pipeline; both ends of the temperature control unit are communicated with the inside of the main box body. The invention can analyze the change of the sample to be tested in absolute content, peak retention time and other parameters in different test environments to obtain the test data of the sample to be tested when forming the optimal homogenization state in the specific test environment, and simultaneously, the analysis precision of the sample to be tested is ensured by controlling the specific test environment.
Description
Technical Field
The invention relates to the technical field of gas performance testing, in particular to a gas rheological property testing device and a using method thereof.
Background
Light hydrocarbon is the main component of liquefied natural gas and is also an important raw material for synthesizing various chemicals. In the oil and gas exploration level, light hydrocarbons are usually required to be removed from drilling fluid in the drilling process and are transmitted to a chromatograph/spectrometer through a pipeline to perform qualitative and quantitative analysis on light hydrocarbon components, so that the oil and gas content and the water content in the reservoir are judged; in the oil and gas development level, the light hydrocarbon is separated from crude oil or an oil-water mixture, and is transmitted through a separate pipeline, and then the single-component preparation of liquefied natural gas and various light hydrocarbons is completed. Therefore, a testing device is needed to test light hydrocarbons.
Because of the heterogeneous physical and chemical properties among the light hydrocarbon components and the mixing proportion of different concentrations, the optimal homogenization state of the light hydrocarbon can be influenced in the transmission process, which is generally shown by the fact that the rheological property of the light hydrocarbon is changed, the composition and occurrence state of the light hydrocarbon components at the inlet end and the outlet end of a pipeline are greatly different, the retention time and the peak width of the chromatographic peak of the same light hydrocarbon component are greatly changed, and the technical parameters are mainly reflected in the conditions of gravity difference among the light hydrocarbon components, condensation and adsorption of the light hydrocarbon components on the pipe wall, oxidation polymerization of the light hydrocarbon components and the like caused by incorrect parameter settings such as temperature, pressure, pipeline length, transmission time and the like in the light hydrocarbon transmission process, so that the effective application cannot be completed.
In the testing device in the prior art, no special device is used for testing the rheological property of the light hydrocarbon mixed components on the transmission pipeline, so that the development and the utilization of light hydrocarbon resources are limited. For the light hydrocarbon sample to be analyzed, the pressure and the temperature of the light hydrocarbon sample in the pipeline are difficult to effectively control by related technicians, so that the light hydrocarbon analysis data is distorted and invalid.
Disclosure of Invention
The invention aims to provide a gas rheological property testing device, which solves the problems that a testing device in the prior art cannot test rheological property of a sample to be tested and related technicians cannot effectively control pressure and temperature of the sample to be tested in a transmission process.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides a gas rheological property testing device for testing rheological property of a sample to be tested under a specific environment and implementing conditions of an optimal homogenization state of the sample to be tested, the gas rheological property testing device comprising:
the main box body is internally provided with a metal pipeline and a test pipeline, and both ends of the test pipeline are communicated with the metal pipeline; the test pipeline is detachably connected with the metal pipeline;
the sample injection unit is arranged outside the main box body; one end of the sample injection unit is communicated with the metal pipeline and is used for providing the sample to be tested;
the sample analysis unit is arranged outside the main box body; one end of the sample analysis unit is communicated with the metal pipeline and is used for receiving the sample to be detected and analyzing the sample to be detected;
a vacuum generating unit provided outside the main casing; one end of the vacuum generating unit is communicated with the metal pipeline and is used for adjusting the air pressure in the metal pipeline and the test pipeline;
a temperature control unit, which is arranged outside the main box body; the two ends of the temperature control unit are communicated with the inside of the main box body and are used for adjusting the temperature in the main box body.
As an alternative to the gas rheology testing apparatus, the gas rheology testing apparatus includes a reducing joint through which the test pipe and the metal pipe are detachably connected.
As an alternative scheme of the gas rheological property testing device, a first valve is arranged at the communication part of the sample injection unit and the metal pipeline, and the first valve is arranged outside the main box body; a second valve is arranged at the communication part of the sample analysis unit and the metal pipeline, and the second valve is arranged outside the main box body; and a third valve is arranged at the communication part of the metal pipeline and the test pipeline.
As an alternative scheme of the gas rheological property testing device, the gas rheological property testing device further comprises a circulating power unit, wherein two ends of the circulating power unit are connected with the metal pipeline, and the circulating power unit is arranged in the main box body; the circulating power unit is used for adjusting the flow rate of the sample to be tested.
As an alternative to the gas rheology testing apparatus, a supporting tube assembly is disposed on an inner wall of the main tank, and the supporting tube assembly is used for supporting the testing pipeline.
As an alternative scheme of the gas rheological property testing device, the supporting tube component comprises a supporting net, a supporting frame, a clamping plate and a U-shaped clamping groove plate, wherein the top end of the groove wall of the U-shaped clamping groove plate is fixedly connected to the inner wall of the main box body; the supporting net is fixedly arranged on the supporting frame, one end of the supporting frame is fixedly arranged on the clamping plate, and the clamping plate can be inserted into a U-shaped groove of the U-shaped clamping groove plate; the supporting net is perpendicular to the clamping plate.
As an alternative to the gas rheology test apparatus, the main casing includes a casing body and a casing door detachably connected to the casing body.
As an alternative of the gas rheological property testing device, an annular groove is circumferentially formed in a side wall of the box door, a sealing rubber pad is arranged in the annular groove, and an end portion of the box body can be inserted into the annular groove in the horizontal direction.
As an alternative to the gas rheology testing apparatus, the gas rheology testing apparatus further includes a pressure detecting device, the pressure detecting device being connected to the metal pipe; the pressure detection device is arranged outside the main box body.
As an alternative to the gas rheology testing apparatus, the gas rheology testing apparatus further includes a temperature detecting device, the temperature detecting device being connected to the metal pipe; the temperature detection device is arranged outside the main box body.
As an alternative to the gas rheology testing apparatus, the sample introduction unit further includes a sample pump and a flow meter; one end of the sample pump is communicated with the metal pipeline, and the flowmeter is connected to a channel between the sample pump and the metal pipeline; the flowmeter is arranged outside the main box body.
In another aspect, the present invention provides a method for using a gas rheology test apparatus, where the method for using a gas rheology test apparatus is completed by using the gas rheology test apparatus, and the method for using a gas rheology test apparatus includes the following steps:
s1, connecting the selected test pipeline to the metal pipeline;
s2, controlling the vacuum generating unit, and pumping the metal pipeline and the test pipeline in the main box body to a specified negative pressure value;
s3, controlling the sample injection unit, flowing the sample to be tested with specific concentration into the metal pipeline and the test pipeline, enabling the pressure in the metal pipeline and the test pipeline to reach a set value, and recording the flow value of the sample to be tested at the moment;
s4, controlling the temperature control unit, adjusting the output temperature of the temperature control unit to reach a set value, and recording the time at the moment as a starting point of the test time;
s5, waiting until the set retention time of the sample to be tested, controlling the sample analysis unit, and analyzing and recording the sample to be tested;
s6, resetting the concentration of the sample to be tested, the pressure in the test pipeline, the flow rate of the sample to be tested in the metal pipeline, the output temperature of the temperature control unit, the retention time of the sample to be tested and the replacement of the test pipeline in sequence, and repeating the steps S2-S5 to perform corresponding test analysis on the sample to be tested.
The beneficial effects of the invention are as follows:
the gas rheological property testing device comprises a main box body, a sample injection unit, a sample analysis unit, a vacuum generation unit and a temperature control unit. Wherein, be provided with metal pipeline and test pipeline in the main tank body, test pipeline's both ends all communicate with metal pipeline, and then sample introduction unit can carry the sample that awaits measuring to the metal pipeline in the main tank body to make the sample that awaits measuring flow in metal pipeline and test pipeline, and test pipeline connects in metal pipeline with detachable mode, and then the staff can replace the test pipeline of different length and different materials, with the test of accomplishing different material test pipeline sample rheological properties of awaiting measuring. Meanwhile, the sample injection unit can provide a sample to be tested with specific concentration; the vacuum generating unit can adjust the air pressure in the metal pipeline and the test pipeline; the temperature control unit can adjust the temperature in the main box body; the sample analysis unit can detect the change of the sample components of the sample to be detected in the absolute content, the peak-out retention time and other parameters under the specific test conditions. The concentration and the flow rate of the sample to be tested and the retention time of the sample to be tested in the test pipeline are adjusted and set, so that test data of the sample to be tested in a specific test environment in an optimal homogenization state are obtained; meanwhile, by controlling a specific test environment, the analysis precision of the sample to be tested can be ensured.
The use method of the gas rheological property testing equipment is completed by using the gas rheological property testing equipment, and the use method of the gas rheological property testing equipment can complete rheological property tests of a sample to be tested under different conditions of temperature, pressure, flow rate and retention time in a certain selected testing pipeline, so that the testing data of the sample to be tested when forming an optimal homogenization state in a specific testing environment are obtained; meanwhile, by controlling a specific test environment, the analysis precision of the sample to be tested can be ensured.
Drawings
FIG. 1 is a schematic diagram of a gas rheology test apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hosting component according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
fig. 4 is a flow chart of a method for using the gas rheological property testing device according to the embodiment of the invention.
In the figure:
1. a main case; 11. a metal pipe; 12. testing the pipeline; 13. a first valve; 14. a second valve; 15. a third valve; 16. a managed component; 161. a support net; 162. a support frame; 1621. a mounting frame; 1622. a bracket; 163. a clamping plate; 164. a U-shaped clamping groove plate; 1641. a clamping groove anchor foot 1641; 17. a case body; 18. a door; 181. an annular groove; 182. sealing rubber cushion; 183. a movable bolt; 19. a support leg; 2. a sample introduction unit; 21. a sample pump; 22. a flow meter; 3. a sample analysis unit; 31. a chromatograph; 4. a vacuum generating unit; 41. a vacuum pump; 42. a vacuum valve; 5. a temperature control unit; 51. a high-low temperature constant temperature box; 6. a reducing joint; 7. a cyclic power unit; 71. a circulation pump; 72. a control panel; 8. a pressure detection device; 81. a digital display pressure gauge; 9. a temperature detecting device; 91. and a digital display thermometer.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Example 1
The embodiment provides a gas rheological property testing device, which is used for testing rheological property of a sample to be tested under a specific environment and realizing conditions of an optimal homogenization state of the sample to be tested.
As shown in fig. 1, the gas rheology test apparatus includes a main casing 1, a sample introduction unit 2, a sample analysis unit 3, a vacuum generation unit 4, and a temperature control unit 5. The main box body 1 can ensure the sealing effect in the box so as to ensure the smooth proceeding of the subsequent test and avoid the influence of external gas or substances entering the main box body 1 on the test of the sample to be tested. And the lower part of the main box body 1 is fixedly connected with a support leg 19 to ensure the stability of the main box body 1. The main box body 1 is internally provided with a metal pipeline 11 and a test pipeline 12, both ends of the test pipeline 12 are communicated with the metal pipeline 11, and then a sample to be tested can flow in the metal pipeline 11 and the test pipeline 12 so as to realize subsequent test on the test pipeline 12. The test pipeline 12 is detachably connected to the metal pipeline 11, so that a worker can replace the test pipeline 12 with different lengths and different materials to finish the test of rheological properties of the sample to be tested by the test pipeline 12 with different materials. Optionally, the box of the main box 1 comprises an outer layer, an intermediate layer and an inner layer, wherein the outer layer is a stainless steel plate layer, the intermediate layer is a heat insulation cotton felt layer, and the inner layer is a gelled hard plastic layer, so that the whole main box 1 is firm and durable, and the heat insulation performance is good.
Further, the sample introduction unit 2, the sample analysis unit 3, the vacuum generation unit 4 and the temperature control unit 5 are all arranged outside the main box body 1, so that a worker can operate the sample introduction unit 2, the sample analysis unit 3, the vacuum generation unit 4 and the temperature control unit 5 without disassembling the main box body 1, and the realization of a specific environment and the test of rheological properties of a sample to be tested under the specific environment are completed. Optionally, the sample to be measured is a light hydrocarbon gas. Of course, the sample to be tested may be other substances, and the embodiment is not particularly limited. One end of the sample injection unit 2 is connected to the metal pipe 11, and is used for providing a sample to be tested, so that the sample injection unit 2 can convey the sample to be tested to the metal pipe 11 in the main box 1. One end of the sample analysis unit 3 is communicated with the metal pipeline 11 and is used for receiving a sample to be tested and analyzing the sample to be tested so as to finish the related test of the sample to be tested.
Specifically, one end of the vacuum generating unit 4 is communicated with the metal pipeline 11 for adjusting other fluids in the metal pipeline 11 and the test pipeline 12, so that the metal pipeline 11 and the test pipeline 12 are swept, and two ends of the temperature control unit 5 are communicated with the inside of the main box body 1 for adjusting the temperature in the main box body 1, so that the vacuum generating unit 4 can adjust the metal pipeline 11 and the test pipeline 12 to be in a negative pressure state, and the temperature control unit 5 can adjust the temperature in the main box body 1. Meanwhile, the sample introduction unit 2 can provide a sample to be tested with specific concentration, and the sample analysis unit 3 can detect the change of the sample components of the sample to be tested in the parameters such as absolute content, peak retention time and the like under specific test conditions. The method comprises the steps of obtaining test data when the sample to be tested forms an optimal uniform state in a specific test environment by adjusting and setting the concentration and the flow rate of the sample to be tested and the retention time of the sample to be tested in a test pipeline; meanwhile, by controlling a specific test environment, the analysis precision of the sample to be tested can be ensured.
Optionally, the sample injecting unit 2 includes a sample pump 21 and a flowmeter 22, one end of the sample pump 21 is communicated with the metal pipe 11 to convey an external sample to be measured into the metal pipe 11, the flowmeter 22 is connected to a channel between the sample pump 21 and the metal pipe 11, and the flowmeter 22 is disposed outside the main box 1, so that a worker can observe the value of the flowmeter 22 conveniently. Specifically, a set volume of the sample to be measured can be injected into the line of the main casing by the sample pump 21, and the volume of the sample to be measured injected can be recorded by the flow meter 22. Optionally, the flow meter 22 is a digital display electronic flow meter. Further, the sample to be tested can be injected into the test pipeline 12 according to the set pressure requirement, so as to control the test pipeline 12 to form different pressure states from negative pressure, normal pressure to high pressure.
The sample analysis unit 3 includes a chromatograph 31, and one end of the chromatograph 31 is connected to the metal pipe 11, and is configured to receive a sample to be measured flowing out of the metal pipe 11, and analyze components of the sample to be measured. Optionally, the chromatograph 31 can realize effective detection of each component of the sample to be detected, can qualitatively and quantitatively calculate the absolute content, the relative content, the retention time and other parameters of each component of the sample to be detected, has single component detection precision reaching 10ppm, and can perform effective comparative analysis on the sample to be detected under the conditions of different temperatures, different pressures, different flow rates, different materials of the test pipeline 12, different lengths of the test pipeline 12, retention time and the like. Alternatively, the chromatograph 31 may be replaced by a chromatograph-mass spectrometer, a mass spectrometer, or an isotope meter, and the embodiment is not particularly limited.
The vacuum generating unit 4 comprises a vacuum pump 41 and a vacuum valve 42, wherein one end of the vacuum pump 41 is communicated with the metal pipeline 11 and is used for adjusting the metal pipeline 11 and the test pipeline 12 to be in a negative pressure state so as to avoid the influence of the last test on the test and improve the analysis precision of the sample to be tested; the vacuum valve 42 is connected to a passage between the vacuum pump 41 and the metal pipe 11, and the vacuum valve 42 is provided outside the main casing 1, so that a worker can conveniently control on-off between the vacuum pump 41 and the metal pipe 11. Alternatively, the vacuum pump 41 can provide a negative pressure value of-2 Mpa to 0Mpa inside the test tube 12. The vacuum pump 41 is also connected with a waste sample box, and after the test is finished, waste samples in the pipeline can be pumped into the waste sample box through the vacuum pump 41, so that the environment-friendly test is realized. Of course, the specimen box may be replaced with a closed bag or a closed tub, and the embodiment is not particularly limited. Meanwhile, the gas rheological property testing equipment adopts a pipeline heat conduction mode to control the temperature of the sample to be tested, so that the potential safety hazard of explosion easily occurring when the sample to be tested is directly heated by the traditional photoelectric type is eliminated. Further, the gas rheological property test equipment further comprises a pressure detection device 8, the pressure detection device 8 is connected to the metal pipeline 11, the pressure detection device 8 is arranged outside the main box body 1, and then the pressure detection device 8 can detect the pressure in the metal pipeline 11, so that a worker can obtain pressure data in the metal pipeline 11 through the pressure detection device 8, and the follow-up adjustment of the pressure in the metal pipeline 11 is facilitated. Optionally, the pressure detecting device 8 includes a digital display pressure gauge 81, and the digital display pressure gauge 81 is connected to the metal pipe 11.
The temperature control unit 5 comprises a high-low temperature constant temperature box 51, two ends of the high-low temperature constant temperature box 51 are communicated with the inner space of the main box body 1 and are used for adjusting the temperature in the main box body 1, and the corresponding temperature adjustment of the test pipeline 12 of the main box body 1 is realized by setting air diversion of different temperatures. Optionally, the high-low temperature incubator 51 can perform air temperature adjustment between-30 ℃ and 150 ℃, and the output temperature control precision is 0.5 ℃, so that the accurate requirement of a sample to be tested on temperature in the test process is met. Further, the gas rheological property test equipment further comprises a temperature detection device 9, the temperature detection device 9 is connected to the metal pipeline 11, the temperature detection device 9 is arranged outside the main box body 1, and then the temperature detection device 9 can detect the temperature in the flow channel, so that a worker can obtain temperature data in the metal pipeline 11 through the temperature detection device 9, and the subsequent adjustment of the temperature in the metal pipeline 11 is facilitated. Optionally, the temperature detecting device 9 includes a digital thermometer 91, and the digital thermometer 91 is connected to the metal pipe 11.
Further, the gas rheological property test equipment comprises a reducing joint 6, the test pipeline 12 and the metal pipeline 11 are detachably connected through the reducing joint 6, further, the test pipeline 12 with different pipe diameters, different lengths and different materials is conveniently connected to the metal pipeline 11, so that the influence of the test pipeline 12 with different materials on rheological properties of a sample to be tested is researched, further, the reducing joint 6 is replaced, the test of the test pipeline 12 with different diameter specifications such as phi 4, phi 6, phi 8, phi 10 and phi 20 can be realized, the length of the minimum test pipeline 12 is 2m, and the length of the maximum test pipeline 12 is 80m. Specifically, a first valve 13 is arranged at the communication part of the sample injection unit 2 and the metal pipeline 11, and the first valve 13 is arranged outside the main box body 1, so that a worker can conveniently control the amount of the sample to be tested flowing into the metal pipeline 11. The second valve 14 is arranged at the communication part of the sample analysis unit 3 and the metal pipeline 11, and the second valve 14 is arranged outside the main box body 1, so that a worker can conveniently control the sample amount of the sample to be detected flowing out of the metal pipeline 11. A third valve 15 is arranged at the communication part of the metal pipeline 11 and the test pipeline 12, and the opening and closing of the third valve 15 can control whether a sample to be tested enters the test pipeline 12. Therefore, the first valve 13, the second valve 14 and the third valve 15 can control the circulation of the sample to be tested in the metal pipeline 11 and the test pipeline 12 by staff, so that the sample to be tested can be conveniently tested.
When the related test of the sample to be tested in the test pipeline 12 is performed, the first valve 13, the second valve 14 and the third valve 15 are all in an open state. When the calibration and the check of the sample analysis unit 3 are carried out, the first valve 13 and the second valve 14 are both in an open state, and the third valve 15 is in a closed state; specifically, through the pressure control of the sample pump 21 and the temperature control of the high-low temperature incubator 51, the standard sample can be injected into the chromatograph 31 according to the temperature, pressure, flow rate and other conditions set by the device, so that the accuracy of the calibration and verification of the chromatograph 31 is improved. Optionally, the metal pipeline 11 is connected with the sample introduction unit 2, the metal pipeline 11 is connected with the sample analysis unit 3, the metal pipeline 11 is connected with the test pipeline 12, and the metal pipeline 11 is connected with the vacuum generation unit 4 through pipeline joints, and the main box body 1 is connected with the temperature control unit 5 through pipeline joints, so that the pipeline joints can facilitate the installation and the disassembly of the units, and the device is suitable for being applied in a laboratory and also suitable for being applied to a field.
Further, the gas rheological property test equipment further comprises a circulating power unit 7, wherein the circulating power unit 7 is arranged in the main box body 1, two ends of the circulating power unit 7 are connected to the metal pipeline 11 and used for adjusting the flow rate of a sample to be tested, and further, the sample to be tested is tested in the test pipeline 12 under the condition of different flow rates. Specifically, the circulation power unit 7 includes a circulation pump 71, the circulation pump 71 is embedded on the inner wall of the main box 1, and a control panel 72 of the circulation pump 71 is located outside the main box 1 after passing through the main box 1, so that a worker can conveniently adjust the output parameters of the circulation pump 71 from outside. Alternatively, by setting the output power of the circulation pump 71, a state of the flow rate of the sample to be measured in the range of 0 to 20L/min can be formed in the test channel of the main casing 1. Further, by setting the time for which the sample to be tested circulates or is stationary in the flow channel and the test channel, different residence times of the sample to be tested in the test tube 12 can be formed.
According to the above scheme, the test data of the sample to be tested can be obtained by setting the sample to be tested with specific concentration in the test pipeline 12 under the conditions of different temperatures, different pressures, different flow rates and different retention times in the test pipeline 12 with specific materials and lengths, and the correlation among factors causing rheological properties of the sample to be tested can be obtained through the comparative analysis among the data, so that the rheological property correlation analysis of the sample to be tested is realized. Specifically, for a sample to be tested with a specific concentration, the material and the length of the test pipeline 12 are specified, so that the sample to be tested can keep the minimum rheological property and the optimal homogenization state under the conditions, namely, the content of components of the sample to be tested is not changed before and after the sample to be tested is transmitted through the test pipeline 12, and the retention time, peak width and other parameters of each component in the chromatograph are not changed. The gas rheological property testing equipment can be used for carrying out experiments of different testing parameters so as to find out parameters such as optimal temperature, pressure, flow rate and the like which meet the conditions; for sample analysis in the field, parameters such as optimal temperature, pressure, flow rate and the like which can be matched can be given according to the analysis conclusion of the existing rheological test database tested by the gas rheological test equipment, so that the field operation is effectively guided.
Further, the main box 1 includes a box body 17 and a box door 18, and the box door 18 is detachably connected to the box body 17, so that a worker can conveniently adjust the third valve 15 and detach and replace the test pipeline 12. As shown in fig. 3, the circumferential direction of the inner side wall of the box door 18 is provided with an annular groove 181, a sealing rubber pad 182 is arranged in the annular groove 181, and the end of the box body 17 can be inserted into the annular groove 181 along the horizontal direction so as to seal the inner space of the box body 17, ensure the tightness of the main box body 1, and avoid the influence of external factors on the test in the main box body 1 in the test process. Wherein, box body 17 passes through bolted construction with chamber door 18 to make things convenient for the staff to dismantle chamber door 18.
As shown in fig. 2, the inner wall of the main box 1 is provided with a supporting tube assembly 16, and the supporting tube assembly 16 is used for supporting the test pipeline 12, so as to avoid the test pipeline 12 from being affected after the test pipeline 12 directly contacts the inner wall of the main box 1. The main box body 1 is internally provided with a plurality of pipe supporting assemblies 16, and the pipe supporting assemblies 16 are arranged at intervals along the inner wall of the main box body 1, so that the test pipeline 12 can be carried on each pipe supporting assembly 16, and further, the space in the main box body 1 is fully utilized to be suitable for the installation of the test pipelines 12 with different lengths, meanwhile, the pipe supporting assemblies 16 can carry the test pipelines 12 in a segmented mode, and damage to the pipe supporting assemblies 16 caused when the test pipelines 12 are carried on a single pipe supporting assembly 16 is avoided. Specifically, the hosting component 16 includes a supporting net 161, a supporting frame 162, a clamping plate 163 and a U-shaped clamping groove plate 164, the top end of the groove side wall of the U-shaped clamping groove plate 164 is fixedly connected to the inner wall of the main box 1, the supporting net 161 is fixedly arranged on the supporting frame 162, one end of the supporting frame 162 is fixedly arranged on the clamping plate 163, and the clamping plate 163 can be inserted into the U-shaped groove of the U-shaped clamping groove plate 164 along the vertical direction, so that the fixing and the installation of the supporting net 161 in the main box 1 are completed, and the replacement of the supporting net 161 is facilitated. The supporting net 161 is perpendicular to the clamping plate 163 and is used for supporting the test pipeline 12, so that the test pipeline 12 is carried on the supporting net 161. Optionally, the support frame 162 includes a mounting frame 1621 and a bracket 1622, the mounting frame 1621 is fixedly connected to the clamping plate 163, the mounting frame 1621 is perpendicular to the clamping plate 163, the supporting net 161 is fixedly connected to the mounting frame 1621, and the supporting net 161 is further fixedly mounted on the clamping plate 163 through the mounting frame 1621; still be provided with draw-in groove anchor foot 1641 on the U type draw-in groove board 164, the one end of bracket 1622 can be installed on draw-in groove anchor foot 1641, and bracket 1622's the other end rotates to locate on the mounting bracket 1621, and then bracket 1622 can play the effect of supporting mounting bracket 1621, strengthens the bearing capacity of mounting bracket 1621, simultaneously, through the rotation of bracket 1622 on mounting bracket 1621, makes things convenient for cardboard 163 to pull out the plug in the U type inslot of U type draw-in groove board 164.
Example two
The embodiment also provides a method for using the gas rheological property testing device, which is completed by using the gas rheological property testing device of the first embodiment, as shown in fig. 4, and includes the following steps:
s1, connecting a selected test pipeline 12 to a metal pipeline 11;
s2, controlling the vacuum generating unit 4, and pumping the metal pipeline 11 and the test pipeline 12 in the main box body 1 to a specified negative pressure value;
s3, controlling a sample injection unit 2, circulating a sample to be tested with specific concentration into the metal pipeline 11 and the test pipeline 12, enabling the pressure in the metal pipeline 11 and the test pipeline 12 to reach a set value, and recording the flow value of the sample to be tested at the moment;
s4, controlling the temperature control unit 5, adjusting the output temperature of the temperature control unit 5 to reach a set value, and recording the time at the moment as a starting point of the test time;
s5, waiting until the retention time of the set sample to be detected, controlling the sample analysis unit 3, and carrying out analysis record on the sample to be detected;
s6, resetting the concentration of the sample to be tested, the pressure in the test pipeline 12, the flow rate of the sample to be tested in the metal pipeline 11, the output temperature of the temperature control unit 5, the retention time of the sample to be tested and replacing the test pipeline 12 in sequence, and repeating the steps S2-S5 to perform corresponding test analysis on the sample to be tested.
The using method of the gas rheological test equipment can finish rheological tests of the sample to be tested in a certain selected test pipeline under different conditions of temperature, pressure, flow rate and retention time, so as to obtain test data when the sample to be tested forms an optimal homogenization state in a specific test environment; meanwhile, by controlling a specific test environment, the analysis precision of the sample to be tested can be ensured.
Specifically, the using method of the gas rheological property testing device further comprises the following steps:
a1, calculating the length distribution of the total length of the test tube 12 to be tested on each supporting net 161, opening a box door 18, connecting one end of the test tube 12 to one reducer union 6, winding the test tube on a first layer of supporting net 161 in a circumferential manner according to the distributed length, then winding the test tube on a second layer of supporting net 161, and so on until the last layer, and connecting the other end of the test tube 12 to the other reducer union 6;
a2, closing the first valve 13 and the second valve 14, opening the third valve 15, mounting the box door 18 on the box body 17 to form a main box body 1, then opening the vacuum valve 42, starting the vacuum pump 41, and pumping the metal pipeline 11 and the test pipeline 12 in the main box body 1 to a specified negative pressure value; closing the vacuum pump 41 and the vacuum valve 42;
a3, starting a sample pump 21, and extracting a sample to be detected; then slightly opening the first valve 13 to enable the sample to be tested to flow into the metal pipeline 11, and observing the digital display pressure gauge 81 until the pressures of the metal pipeline 11 and the test pipeline 12 reach the set value; then the first valve 13 is closed, the sample pump 21 is closed, and the flow value of the flowmeter 22 at the moment is recorded;
a4, starting the circulating pump 71, and adjusting the output power of the circulating pump 71 to enable the flow velocity of the sample to be tested to reach a set value; opening the high-low temperature constant temperature box 51, adjusting the output temperature setting, and after a period of time, the digital display thermometer 91 reaches a set value; recording the time at the moment as a starting point of the test time;
a5, waiting until the retention time of the sample to be detected is set, starting the chromatograph 31 at the corresponding time node, and starting the second valve 14 to detect the components of the sample to be detected; closing the second valve 14 after detection;
a6, repeating the steps A3-A5, sequentially resetting pressure, temperature, flow rate and retention time parameters, and carrying out corresponding test analysis on the sample to be tested;
and A7, after all series of analysis are completed, connecting the waste sample box to a vacuum pump 41, opening the vacuum pump 41 and a vacuum valve 42, extracting waste samples into the waste sample box, and closing the vacuum valve 42 and the vacuum pump 41 when the pressure of the metal pipeline 11 and the test pipeline 12 becomes a negative pressure state, so as to close the waste sample box.
The steps A1 to A7 can obtain the test data of the sample to be tested under the conditions of different temperatures, different pressures, different flow rates and different retention times, and further obtain the relationship among factors causing the rheological property of the sample to be tested through the comparative analysis among the data, so as to realize the correlation test of the rheological property of the sample to be tested, and obtain the environmental condition when the sample to be tested is in the optimal homogenization state under the specific test pipeline 12.
Further, when the analysis of the test pipes 12 of different materials and different lengths is performed, the box door 18 is opened, the test pipe 12 used in the last test is removed, the test pipes 12 of different materials and different lengths are replaced by the reducer union 6, and then the corresponding test analysis is performed according to steps A1 to A7.
Further, the method for using the gas rheological test device when calibrating and checking the chromatograph 31 comprises the following steps:
b1, opening a box door 18, closing a third valve 15, mounting the box door 18 on a box body 17 to form a main box body 1, and connecting a standard sample to a sample pump 21 interface;
b2, closing the first valve 13 and the second valve 14, opening the vacuum valve 42, starting the vacuum pump 41, and pumping the metal pipeline 11 to a specified negative pressure value; closing the vacuum pump 41 and the vacuum valve 42;
b3, starting a sample pump 21 to extract the standard sample; then slightly opening the first valve 13 to enable the sample to be measured to flow into the metal pipeline 11, observing the digital display pressure gauge 81 at any time, adjusting the sample pump 21, and controlling the pressure in the metal pipeline 11 until the pressure of the sample to be measured of the metal pipeline 11 reaches a set value; then the first valve 13 is closed, the sample pump 21 is closed, and the flow value of the flowmeter 22 at the moment is recorded;
b4, opening the high-low temperature constant temperature box 51, adjusting output temperature setting, and enabling the digital display thermometer 91 to reach a set value after a period of time; recording the time at the moment as a starting point of the test time;
b5, waiting until the retention time of the set standard sample, starting the chromatograph 31 at the corresponding time node, and starting the second valve 14 to detect the components of the standard sample; closing the second valve 14 after detection; performing test analysis on the standard sample;
and B6, after the test analysis is finished, connecting the waste sample box to a vacuum pump 41, opening the vacuum pump 41 and a vacuum valve 42, pumping the waste sample into the waste sample box, and closing the vacuum valve 42 and the vacuum pump 41 when the metal pipeline 11 and the test pipeline 12 are in a specified negative pressure state, so as to close the waste sample box.
The steps B1 to B7 can be performed by controlling the flow rate of the sample pump 21 and controlling the temperature of the high-low temperature constant temperature box 51, so that the standard sample can be injected into the chromatograph 31 according to the specified temperature and pressure conditions, and the accuracy of calibrating and checking the chromatograph 31 can be improved.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (12)
1. A gas rheology testing device for testing the rheology of a sample to be tested in a specific environment and the implementation conditions of the optimal homogenization state of the sample to be tested, characterized in that the gas rheology testing device comprises:
the device comprises a main box body (1), wherein a metal pipeline (11) and a test pipeline (12) are arranged in the main box body (1), and two ends of the test pipeline (12) are communicated with the metal pipeline (11); -said test tube (12) is removably connected to said metal tube (11);
the sample injection unit (2) is arranged outside the main box body (1); one end of the sample injection unit (2) is communicated with the metal pipeline (11) and is used for providing the sample to be tested;
the sample analysis unit (3), the said sample analysis unit (3) locates outside the said main box (1); one end of the sample analysis unit (3) is communicated with the metal pipeline (11) and is used for receiving the sample to be detected and analyzing the sample to be detected;
a vacuum generation unit (4), wherein the vacuum generation unit (4) is arranged outside the main box body (1); one end of the vacuum generating unit (4) is communicated with the metal pipeline (11) and is used for adjusting the air pressure in the metal pipeline (11) and the test pipeline (12);
the temperature control unit (5) is arranged outside the main box body (1); the two ends of the temperature control unit (5) are communicated with the inside of the main box body (1) and are used for adjusting the temperature in the main box body (1).
2. A gas rheology testing device according to claim 1, characterized in that it comprises a reducer union (6), said test pipe (12) being removably connected to said metal pipe (11) through said reducer union (6).
3. The gas rheological test device according to claim 1, characterized in that a first valve (13) is arranged at the communication part of the sample introduction unit (2) and the metal pipeline (11), and the first valve (13) is arranged outside the main box body (1); a second valve (14) is arranged at the communication part of the sample analysis unit (3) and the metal pipeline (11), and the second valve (14) is arranged outside the main box body (1); and a third valve (15) is arranged at the communication part of the metal pipeline (11) and the test pipeline (12).
4. The gas rheology testing apparatus according to claim 1, further comprising a circulation power unit (7), both ends of the circulation power unit (7) being connected to the metal pipe (11), the circulation power unit (7) being provided inside the main tank (1); the circulating power unit (7) is used for adjusting the flow rate of the sample to be tested.
5. The gas rheology testing apparatus according to claim 1, characterized in that a hosting assembly (16) is provided on the inner wall of the main tank (1), the hosting assembly (16) being used for supporting the test pipe (12).
6. The gas rheology testing apparatus according to claim 5, characterized in that the hosting assembly (16) comprises a supporting net (161), a supporting frame (162), a clamping plate (163) and a U-shaped clamping plate (164), wherein the top end of the groove wall of the U-shaped clamping plate (164) is fixedly connected to the inner wall of the main box (1); the supporting net (161) is fixedly arranged on the supporting frame (162), one end of the supporting frame (162) is fixedly arranged on the clamping plate (163), and the clamping plate (163) can be inserted into a U-shaped groove of the U-shaped clamping groove plate (164); the support net (161) is perpendicular to the clamping plate (163) and is used for supporting the test pipeline (12).
7. The gas rheology testing apparatus according to claim 1, characterized in that said main tank (1) comprises a tank body (17) and a tank door (18), said tank door (18) being removably connected to said tank body (17).
8. The gas rheological test device according to claim 7, characterized in that the inner side wall of the box door (18) is circumferentially provided with an annular groove (181) in which a sealing rubber pad (182) is arranged, and the end of the box body (17) can be inserted into the annular groove (181) in the horizontal direction.
9. The gas rheology testing apparatus according to claim 1, characterized in that it further comprises a pressure detection device (8), said pressure detection device (8) being connected to said metal pipe (11); the pressure detection device (8) is arranged outside the main box body (1).
10. The gas rheology testing apparatus according to claim 1, characterized in that it further comprises a temperature detection device (9), said temperature detection device (9) being connected to said metal pipe (11); the temperature detection device (9) is arranged outside the main box body (1).
11. The gas rheology testing device according to claim 1, characterized in that the sample introduction unit (2) further comprises a sample pump (21) and a flow meter (22); one end of the sample pump (21) is communicated with the metal pipeline (11), and the flowmeter (22) is connected to a channel between the sample pump (21) and the metal pipeline (11); the flowmeter (22) is arranged outside the main box body (1).
12. A method of using a gas rheology testing apparatus according to any one of claims 1 to 11, comprising the steps of:
s1, connecting the selected test pipeline (12) to the metal pipeline (11);
s2, controlling the vacuum generating unit (4) to pump the metal pipeline (11) and the test pipeline (12) in the main box body (1) to a specified negative pressure value;
s3, controlling the sample injection unit (2), flowing the sample to be tested with specific concentration into the metal pipeline (11) and the test pipeline (12), enabling the pressure in the metal pipeline (11) and the test pipeline (12) to reach a set value, and recording the flow value of the sample to be tested at the moment;
s4, controlling the temperature control unit (5), adjusting the output temperature of the temperature control unit (5) to reach a set value, and recording the time at the moment as a starting point of the test time;
s5, waiting until the set retention time of the sample to be detected, controlling the sample analysis unit (3), and carrying out analysis record on the sample to be detected;
s6, resetting the concentration of the sample to be tested, the pressure in the test pipeline (12), the flow rate of the sample to be tested in the metal pipeline (11), the output temperature of the temperature control unit (5), the retention time of the sample to be tested and replacing the test pipeline (12) in sequence, and repeating the steps S2-S5 to perform corresponding test analysis on the sample to be tested.
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| US20020001543A1 (en) * | 2000-06-28 | 2002-01-03 | Duriez Gilbert | Transport device for analysing hydrocarbon-containing constituents |
| US20120127466A1 (en) * | 2009-07-30 | 2012-05-24 | Sgs North America Inc. | Pvt analysis of pressurized fluids |
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