CN116067834A - A kind of gas rheology testing equipment and using method thereof - Google Patents

Abstract

The invention relates to the technical field of gas performance testing, and specifically discloses a gas rheological testing device and a using method thereof. The gas rheological testing equipment includes a main box body, a sample sampling unit, a sample analysis unit, a vacuum generating unit and a temperature control unit. The main box is equipped with a metal pipe and a test pipe, both ends of the test pipe are connected to the metal pipe, and the test pipe is detachably connected to the metal pipe; one end of the sample injection unit, one end of the sample analysis unit and the vacuum generator One end of the unit is communicated with the metal pipe; the two ends of the temperature control unit are communicated with the inside of the main box. The present invention can analyze the changes of the absolute content, peak retention time and other parameters of the sample to be tested in different test environments, and obtain the test data when the sample to be tested forms the best homogeneous state in a specific test environment, and at the same time, by controlling the specific The test environment ensures the analysis accuracy of the samples to be tested.

Description

A kind of gas rheology test equipment and using method thereof

technical field

The invention relates to the technical field of gas performance testing, in particular to a gas rheological testing device and a use method thereof.

Background technique

Light hydrocarbons are the main components of liquefied natural gas and important raw materials for the synthesis of various chemicals. At the level of oil and gas exploration, it is usually necessary to remove light hydrocarbons from the drilling fluid during the drilling process, and transfer them to a chromatograph/spectrometer through a pipeline for qualitative and quantitative analysis of light hydrocarbon components, so as to determine the oil and gas content and water content in the reservoir At the level of oil and gas development, it is often necessary to separate this part of light hydrocarbons from crude oil or oil-water mixture, carry out separate pipeline transmission, and then complete the production of liquefied natural gas and various light hydrocarbons. Therefore, a testing device is needed to test light hydrocarbons.

Due to the inhomogeneous physical and chemical properties of the light hydrocarbon components, as well as the mixing ratio of different concentrations, all affect the best homogenization state that the light hydrocarbons can achieve during the transmission process, usually manifested in changes in the rheological properties of the light hydrocarbons, The composition and occurrence state of light hydrocarbon components at the inlet and outlet ends of the pipeline are quite different, and the retention time and peak width of the chromatographic peaks of the same light hydrocarbon component vary greatly. Improper setting of parameters such as temperature, pressure, pipeline length, and transmission elapsed time during the transmission process leads to gravity differentiation among light hydrocarbon components, condensation and adsorption of light hydrocarbon components on the pipe wall, and oxidation of light hydrocarbon components Aggregation and other situations occur, making it impossible to complete effective application.

Among the testing devices in the prior art, there is no device specially used for testing the rheological properties of light hydrocarbon mixed components on the transmission pipeline, which limits the development and utilization of light hydrocarbon resources. For the light hydrocarbon samples to be analyzed, it is also difficult for relevant technicians to effectively control the pressure and temperature of the light hydrocarbon samples in the pipeline, resulting in distortion and invalidity of the light hydrocarbon analysis data.

Contents of the invention

The object of the present invention is to provide a kind of gas rheology test equipment, to solve the problem that the test device in the prior art cannot test the rheology of the sample to be tested, and the relevant technical personnel cannot measure the pressure and pressure of the sample to be tested during the transmission process. The problem of effective temperature control.

For reaching above-mentioned purpose, the present invention adopts following technical scheme:

On the one hand, the present invention provides a kind of gas rheology testing equipment, is used for testing the rheology of the sample to be tested in a specific environment, and the realization condition of the optimal homogenization state of the sample to be tested, the gas rheology testing equipment includes:

The main box, the above-mentioned main box is provided with a metal pipe and a test pipe, both ends of the above-mentioned test pipe are connected with the above-mentioned metal pipe; the above-mentioned test pipe is connected to the above-mentioned metal pipe in a detachable manner;

A sample sampling unit, the above-mentioned sample sampling unit is arranged outside the above-mentioned main box; one end of the above-mentioned sample sampling unit is connected with the above-mentioned metal pipeline, and is used to provide the above-mentioned samples to be tested;

A sample analysis unit, the above-mentioned sample analysis unit is arranged outside the above-mentioned main box; one end of the above-mentioned sample analysis unit is connected with the above-mentioned metal pipeline, and is used to receive the above-mentioned sample to be tested and analyze the above-mentioned sample to be tested;

A vacuum generating unit, the above-mentioned vacuum generating unit is arranged outside the above-mentioned main box; one end of the above-mentioned vacuum generating unit is connected with the above-mentioned metal pipeline, and is used to adjust the air pressure in the above-mentioned metal pipeline and the above-mentioned test pipeline;

A temperature control unit, the temperature control unit is arranged outside the main box; both ends of the temperature control unit communicate with the inside of the main box, and are used to adjust the temperature in the main box.

As an optional solution of the gas rheology testing device, the gas rheology testing device includes a reducing joint, and the test pipe and the metal pipe are detachably connected through the reducing joint.

As an alternative to the above-mentioned gas rheology testing equipment, a first valve is arranged at the connection between the above-mentioned sample sampling unit and the above-mentioned metal pipeline, and the above-mentioned first valve is arranged outside the above-mentioned main box; the above-mentioned sample analysis unit and A second valve is provided at the connection of the above-mentioned metal pipeline, and the above-mentioned second valve is arranged outside the above-mentioned main box; a third valve is provided at the connection of the above-mentioned metal pipeline and the above-mentioned test pipeline.

As an alternative to the above-mentioned gas rheology testing equipment, the above-mentioned gas rheology testing equipment also includes a cyclic power unit, the two ends of the above-mentioned cyclic power unit are connected to the above-mentioned metal pipeline, and the above-mentioned cyclic power unit is arranged at the bottom of the above-mentioned main box. Inside: the circulation power unit is used to adjust the flow rate of the sample to be tested.

As an optional solution of the gas rheology testing equipment, a hosting assembly is arranged on the inner wall of the main box, and the hosting assembly is used to support the testing pipeline.

As an alternative to the above-mentioned gas rheology testing equipment, the above-mentioned hosting assembly includes a support net, a support frame, a clamping plate and a U-shaped groove plate, and the top of the groove wall of the above-mentioned U-shaped groove plate is fixedly connected to the above-mentioned main box On the inner wall of the above-mentioned support net; the above-mentioned support net is fixed on the above-mentioned support frame, and one end of the above-mentioned support frame is fixed on the above-mentioned card plate, and the above-mentioned card plate can be inserted into the U-shaped groove of the above-mentioned U-shaped card slot plate; the above-mentioned support network is perpendicular to The aforementioned cardboard.

As an optional solution of the gas rheology testing equipment, the main box includes a box body and a box door, and the box door is detachably connected to the box body.

As an alternative to the above-mentioned gas rheology testing equipment, the side wall of the above-mentioned box door is provided with an annular groove in the circumferential direction, and a sealing rubber pad is arranged in the above-mentioned annular groove, and the end of the above-mentioned box body can be aligned along the horizontal direction. Insert it into the above-mentioned annular groove.

As an optional solution of the gas rheology testing equipment, the gas rheology testing equipment further includes a pressure detection device connected to the metal pipeline; the pressure detection device is arranged outside the main box.

As an optional solution of the gas rheology testing equipment, the gas rheology testing equipment further includes a temperature detection device connected to the metal pipeline; the temperature detection device is arranged outside the main box.

As an alternative to the above-mentioned gas rheology testing equipment, the above-mentioned sample sampling unit also includes a sample pump and a flow meter; one end of the above-mentioned sample pump is connected to the above-mentioned metal pipeline, and the above-mentioned flow meter is connected to the above-mentioned sample pump and the above-mentioned metal pipeline. On the channel between the pipelines; the above-mentioned flow meter is arranged outside the above-mentioned main box.

On the other hand, the present invention provides a method for using the gas rheology testing equipment. The above gas rheology testing equipment is used to complete the above gas rheology testing equipment. The above gas rheology testing equipment includes the following steps :

S1. Connect the selected above-mentioned test pipe to the above-mentioned metal pipe;

S2. Control the above-mentioned vacuum generating unit, and pump the above-mentioned metal pipe and test pipe in the above-mentioned main box to a specified negative pressure value;

S3. Control the above-mentioned sample sampling unit, circulate the above-mentioned sample to be tested with a specific concentration into the above-mentioned metal pipeline and the above-mentioned test pipeline, and make the pressure in the above-mentioned metal pipeline and the above-mentioned test pipeline reach the set value, and record the above-mentioned to-be-tested sample at this time. Measure the flow value of the sample;

S4. Control the above-mentioned temperature control unit, adjust the output temperature of the above-mentioned temperature control unit to reach the set value, and record the time at this moment as the starting point of the test time;

S5. Wait until the set retention time of the above-mentioned sample to be tested, control the above-mentioned sample analysis unit, and analyze and record the above-mentioned sample to be tested;

S6, reset the concentration of the above-mentioned sample to be tested, the pressure in the above-mentioned test pipeline, the flow rate of the sample to be tested in the above-mentioned metal pipeline, the output temperature of the above-mentioned temperature control unit, the residence time of the above-mentioned sample to be tested and replace the test pipeline in sequence, repeat the steps S2-S5, performing corresponding test analysis on the above-mentioned samples to be tested.

The beneficial effects of the present invention are:

The gas rheological testing equipment includes a main box body, a sample sampling unit, a sample analysis unit, a vacuum generating unit and a temperature control unit. Wherein, the main box is provided with a metal pipeline and a test pipeline, and the two ends of the test pipeline are connected with the metal pipeline, and then the sample sampling unit can transport the sample to be tested to the metal pipeline in the main box, and make the sample to be tested in the metal pipeline. The flow in the metal pipe and the test pipe, and the test pipe is detachably connected to the metal pipe, so that the staff can replace the test pipes of different lengths and different materials, so as to complete the rheological test of the sample to be tested in the test pipe of different materials. At the same time, the sample injection unit can provide a specific concentration of the sample to be tested; the vacuum generating unit can adjust the air pressure in the metal pipe and the test pipe; the temperature control unit can adjust the temperature in the main box; the sample analysis unit can detect the sample to be tested. Changes in parameters such as absolute content and peak retention time of sample components under specific test conditions. By adjusting the concentration and flow rate of the sample to be tested and the residence time of the sample to be tested in the test pipeline, the test data of the sample to be tested in the best homogeneous state can be obtained in a specific test environment; at the same time, by controlling the specific test The environment can ensure the analysis accuracy of the sample to be tested.

The use method of the gas rheology testing equipment of the present invention is completed by using the above-mentioned gas rheology testing equipment. The use method of the gas rheology testing equipment can complete the testing of samples under different temperatures, pressures, flow rates and The rheological test under the condition of dwell time is used to obtain the test data when the sample to be tested forms the best homogeneous state in a specific test environment; at the same time, the analysis accuracy of the sample to be tested can be ensured by controlling the specific test environment.

Description of drawings

Fig. 1 is the structural representation of the gas rheology test equipment provided by the embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a hosting component provided by an embodiment of the present invention;

Fig. 3 is a partial enlarged view of place A in Fig. 1;

Fig. 4 is a schematic flow chart of the method for using the gas rheology testing device provided by the embodiment of the present invention.

In the picture:

1. Main box; 11. Metal pipe; 12. Test pipe; 13. First valve; 14. Second valve; 15. Third valve; 16. Hosting component; 161. Support net; 162. Support frame; 1621 , installation frame; 1622, bracket; 163, card plate; 164, U-shaped card slot plate; 1641, card slot anchor foot 1641; 17, box body; 18, box door; 181, annular groove; 182, seal Rubber pad; 183, movable bolt; 19, foot; 2, sample injection unit; 21, sample pump; 22, flow meter; 3, sample analysis unit; 31, chromatograph; 4, vacuum generating unit; 41, vacuum pump; 42. Vacuum valve; 5. Temperature control unit; 51. High and low temperature constant temperature box; 6. Reducing joint; 7. Cycle power unit; 71. Circulation pump; 72. Control panel; 8. Pressure detection device; 81. Digital display Pressure gauge; 9. Temperature detection device; 91. Digital thermometer.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different positions, and "above", "above" and "above" the first feature on the second feature include that the first feature is on the second feature. Directly above and obliquely above, or simply means that the first feature level is higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or it can be Connected in a detachable manner, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

Embodiment one

This embodiment provides a gas rheology testing device, which is used for testing the rheology of the sample to be tested in a specific environment and the conditions for realizing the best homogenization state of the sample to be tested.

As shown in FIG. 1 , the gas rheology testing device includes a main box body 1 , a sample sampling unit 2 , a sample analysis unit 3 , a vacuum generating unit 4 and a temperature control unit 5 . The main box 1 can ensure the sealing effect inside the box, so as to ensure the smooth progress of subsequent tests, and prevent external gas or substances from entering the main box 1 and affecting the test of the sample to be tested. And the bottom of the main box body 1 is fixedly connected with a leg 19 to ensure the stability of the main box body 1 . The main box 1 is provided with a metal pipe 11 and a test pipe 12, and the two ends of the test pipe 12 are connected with the metal pipe 11, and then the sample to be tested can flow in the metal pipe 11 and the test pipe 12, so as to realize subsequent testing of the test pipe. 12 tests. Wherein, the test pipe 12 is detachably connected to the metal pipe 11, and then the staff can replace the test pipe 12 of different lengths and materials, so as to complete the rheological test of the test pipe 12 of different materials to be tested. Optionally, the box body of the main box body 1 includes an outer layer, a middle layer and an inner layer, the outer layer is a stainless steel plate layer, the middle layer is a thermal insulation cotton felt layer, and the inner layer is a gelled hard plastic layer, so that the main box body 1 The overall structure is strong and durable, with good thermal insulation.

Further, the sample injection unit 2, the sample analysis unit 3, the vacuum generating unit 4 and the temperature control unit 5 are all arranged outside the main box body 1, so that it is convenient for the staff to inject samples without disassembling the main box body 1 The unit 2, the sample analysis unit 3, the vacuum generating unit 4 and the temperature control unit 5 operate to realize the realization of a specific environment and test the rheological properties of the sample to be tested under the specific environment. Optionally, the sample to be tested is light hydrocarbon gas. Certainly, the sample to be tested may also be other substances, which are not specifically limited in this embodiment. Wherein, one end of the sample sampling unit 2 communicates with the metal pipe 11 for providing the sample to be tested, and then the sample sampling unit 2 can deliver the sample to be tested to the metal pipe 11 in the main box 1 . One end of the sample analysis unit 3 is connected to the metal pipe 11 for receiving the sample to be tested and analyzing the sample to be tested, so as to complete the relevant test of the sample to be tested.

Specifically, one end of the vacuum generating unit 4 communicates with the metal pipe 11 for adjusting other fluids in the metal pipe 11 and the test pipe 12 to realize the purging of the metal pipe 11 and the test pipe 12, and the two ends of the temperature control unit 5 end communicates with the inside of the main box 1, and is used to adjust the temperature in the main box 1, therefore, the vacuum generating unit 4 can adjust the metal pipe 11 and the test pipe 12 to be in a negative pressure state, and the temperature control unit 5 can adjust the main box. body 1 temperature. At the same time, the sample sampling unit 2 can provide a specific concentration of the sample to be tested, and the sample analysis unit 3 can detect the changes of the sample components in the absolute content, peak retention time and other parameters of the sample to be tested under specific test conditions. By adjusting the concentration and flow rate of the sample to be tested and the residence time of the sample to be tested in the test pipeline, the test data when the sample to be tested is in the best homogeneous state in a specific test environment is obtained; at the same time, by controlling the specific test environment , which can ensure the analytical precision of the sample to be tested.

Optionally, the sample sampling unit 2 includes a sample pump 21 and a flow meter 22, one end of the sample pump 21 communicates with the metal pipe 11 to transport the external sample to be tested into the metal pipe 11, and the flow meter 22 is connected to the sample On the passage between the pump 21 and the metal pipe 11, and the flow meter 22 is arranged outside the main box body 1, so that the staff can observe the value of the flow meter 22 conveniently. Specifically, a set volume of the sample to be tested can be injected into the pipeline of the main tank through the sample pump 21 , and the volume injected into the sample to be tested can be recorded by the flow meter 22 . Optionally, the flowmeter 22 is a digital display electronic flowmeter. Further, according to the set pressure requirements of the test pipeline 12, the corresponding volume of the sample to be tested can be injected, and then the test pipeline 12 can be controlled to form different pressure states from negative pressure, normal pressure to high pressure.

The sample analysis unit 3 includes a chromatograph 31 , one end of the chromatograph 31 communicates with the metal pipe 11 for receiving the sample to be tested flowing out of the metal pipe 11 and analyzing the components of the sample to be tested. Optionally, the chromatograph 31 can realize the effective detection of each sample component to be tested, and can qualitatively and quantitatively calculate the absolute content, relative content, retention time and other parameters of each sample component to be tested, and the single-component detection accuracy can reach 10ppm , can effectively compare and analyze the samples to be tested under conditions such as different temperatures, different pressures, different flow rates, different materials of the test pipe 12, different lengths of the test pipe 12, and retention times. Optionally, the chromatograph 31 may also be replaced with a chromatography-mass spectrometer, a mass spectrometer, or an isotope analyzer, which is not specifically limited in this embodiment.

The vacuum generating unit 4 includes a vacuum pump 41 and a vacuum valve 42. One end of the vacuum pump 41 communicates with the metal pipe 11, and is used to adjust the negative pressure state in the metal pipe 11 and the test pipe 12, so as to avoid the impact of the previous test on this test. , to improve the analysis accuracy of the sample to be tested; the vacuum valve 42 is connected to the passage between the vacuum pump 41 and the metal pipeline 11, and the vacuum valve 42 is arranged outside the main box body 1 to facilitate the staff to control the vacuum pump 41 and the metal pipeline 11 between breaks. Optionally, the vacuum pump 41 can provide a negative pressure of -2Mpa˜0Mpa in the test pipeline 12 . Wherein, the vacuum pump 41 is also connected with a waste sample box. After the test is completed, the waste samples in the pipeline can be pumped into the waste sample box by the vacuum pump 41 to achieve environmental protection testing. Of course, the waste sample box can also be replaced with a closed bag or a closed bucket, which is not specifically limited in this embodiment. At the same time, the gas rheology test equipment adopts the heat conduction method of the pipeline to control the temperature of the sample to be tested, which eliminates the potential safety hazard of explosion when the sample to be tested is directly heated by the photoelectric method in the past. Further, the gas rheology testing equipment also includes a pressure detection device 8, the pressure detection device 8 is connected to the metal pipe 11, and the pressure detection device 8 is arranged outside the main box 1, and then the pressure detection device 8 can detect the metal pipe 11. The pressure in the metal pipe 11 is detected, so that the staff can obtain the pressure data in the metal pipe 11 through the pressure detection device 8, so as to facilitate subsequent adjustment of the pressure in the metal pipe 11. Optionally, the pressure detection 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 includes a high and low temperature thermostat box 51, and the two ends of the high and low temperature thermostat box 51 communicate with the inner space of the main box body 1 for adjusting the temperature in the main box body 1. , to realize the adjustment of the corresponding temperature in the test pipeline 12 of the main box 1. Optionally, the high and low temperature thermostat 51 can adjust the air temperature between -30°C and 150°C, and the output temperature control accuracy is 0.5°C, so as to meet the precise temperature requirements of the samples to be tested during the test. Further, the gas rheology testing equipment also includes a temperature detection device 9, the temperature detection device 9 is connected to the metal pipe 11, and 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. The temperature is detected, so that the staff can obtain the temperature data in the metal pipe 11 through the temperature detection device 9, so as to facilitate subsequent adjustment of the temperature in the metal pipe 11. Optionally, the temperature detection device 9 includes a digital display thermometer 91 , and the digital display thermometer 91 is connected to the metal pipe 11 .

Further, the gas rheology test equipment includes a reducing joint 6, and the test pipe 12 is detachably connected to the metal pipe 11 through the reducing joint 6, so that it is convenient to connect metal pipes 11 with different pipe diameters, different lengths, and different materials. Test the pipe 12 to study the influence of the test pipe 12 made of different materials on the rheology of the sample to be tested. Further, by replacing the reducing joint 6, the test pipe 12 with different diameters such as φ4, φ6, φ8, φ10, φ20, etc. can be achieved. Test, and the minimum test pipeline 12 length is 2m, and the maximum test pipeline 12 length is 80m. Specifically, a first valve 13 is provided at the connection between the sample sampling unit 2 and the metal pipe 11, and the first valve 13 is located outside the main box 1, so that the staff can monitor the amount of the sample to be measured flowing into the metal pipe 11. control. The connection between the sample analysis unit 3 and the metal pipe 11 is provided with a second valve 14, and the second valve 14 is arranged outside the main box 1, so as to facilitate the staff to control the amount of the sample to be tested flowing out of the metal pipe 11. A third valve 15 is provided at the connection between the metal pipe 11 and the test pipe 12 , and the opening and closing of the third valve 15 can control whether the sample to be tested enters the test pipe 12 . Therefore, through the first valve 13 , the second valve 14 and the third valve 15 , the staff can control the circulation of the sample to be tested in the metal pipe 11 and the test pipe 12 , which facilitates the test of the sample to be tested.

Wherein, when the relevant 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 performing calibration and verification of the sample analysis unit 3, both the first valve 13 and the second valve 14 are in an open state, and the third valve 15 is in a closed state; specifically, through the pressure control of the sample pump 21, the high and low temperature thermostat 51 The temperature control of the standard sample can be injected into the chromatograph 31 according to the temperature, pressure, flow rate and other conditions set by the device, thereby improving the accuracy of the calibration and verification of the chromatograph 31. Optionally, between the metal pipe 11 and the sample sampling unit 2, between the metal pipe 11 and the sample analysis unit 3, between the metal pipe 11 and the test pipe 12, and between the metal pipe 11 and the vacuum generating unit 4 are all passed through The pipe joints are connected, and the main box 1 and the temperature control unit 5 are also connected through pipe joints. The pipe joints can facilitate the installation and disassembly of each unit, which is suitable for both laboratory applications and field applications. Applications.

Further, the gas rheology testing equipment also includes a cyclic power unit 7, which is arranged inside the main box 1, and the two ends of the cyclic power unit 7 are connected to metal pipes 11 for adjusting the flow rate of the sample to be tested , so as to realize the test of the sample to be tested in the test pipeline 12 under different flow rate conditions. 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 body 1, and the control panel 72 of the circulation pump 71 is outside the main box body 1 after passing through the main box body 1, which is convenient The staff adjusts the output parameters of the circulation pump 71 from the outside. Optionally, by setting the output power of the circulating pump 71 , a flow rate state of the sample to be tested within the range of 0-20 L/min can be formed in the test channel of the main box 1 . Further, by setting the time for the sample to be tested to circulate or stand still in the flow channel and the test channel, different residence times of the sample to be tested in the test pipeline 12 can be formed.

It can be seen from the above scheme that in the test pipeline 12 of special material and length, the test sample with a specific concentration in the test pipeline 12 is set to test under the conditions of different temperatures, different pressures, different flow rates, and different residence times, and the test can be obtained. The test data of the sample, and through the comparative analysis of the data, the relationship between the factors that cause the rheology of the sample to be tested is obtained, and the rheological correlation analysis of the sample to be tested is realized. Specifically, for a specific concentration of the sample to be tested, specify the material and length of the test pipe 12, so that the sample to be tested can maintain the minimum rheology and the best homogenization state under the above conditions, that is, ensure that the sample to be tested passes through the test pipe. 12 Before and after transmission, the content of the components of the sample to be tested has not changed, and the parameters such as the retention time and peak width of each component in the chromatogram have not changed. Through this gas rheology test equipment, experiments with different test parameters can be carried out, and the optimal temperature, pressure, flow rate and other parameters that meet the above conditions can be found; for the sample analysis in the field, the existing gas rheology test equipment can be used The rheological test database of the test analyzes the conclusions, and gives the best matching parameters such as temperature, pressure, flow rate, etc., so as to effectively guide on-site operations.

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 it is convenient for the staff to adjust the third valve 15 and to disassemble and install the test pipeline 12. replace. As shown in Figure 3, an annular groove 181 is arranged circumferentially on the inner side wall of the box door 18, and 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. , to close the inner space of the box body 17, to ensure the sealing of the main box 1, and to avoid the influence of external factors on the test in the main box 1 during the test. Wherein, the box body 17 is connected with the box door 18 through a bolt structure, so that the staff can disassemble the box door 18 conveniently.

As shown in Figure 2, the inwall of main box body 1 is provided with hosting assembly 16, and hosting assembly 16 is used for supporting test pipeline 12, after avoiding testing pipeline 12 directly contacting main box body 1 inner wall, causing damage to the test of testing pipeline 12 Influence. Wherein, a plurality of hosting assemblies 16 are arranged in the main box body 1, and are arranged at intervals along the inner wall of the main box body 1, so that the test pipe 12 can be carried on each hosting assembly 16, and then fully utilize the space in the main box body 1. space, so as to be applicable to the installation of test pipelines 12 of different lengths. At the same time, a plurality of hosting components 16 can carry out segmental loads of testing pipelines 12, so as to avoid that the testing pipeline 12 is only carried on a single hosting component 16, causing the failure of the hosting components 16. damage. Specifically, the hosting assembly 16 includes a support net 161, a support frame 162, a clamping plate 163 and a U-shaped groove plate 164, and the top of the groove side wall of the U-shaped groove plate 164 is fixedly connected to the inner wall of the main box body 1 to support The net 161 is fixed on the support frame 162, and one end of the support frame 162 is fixed on the clamp 163, and the clamp 163 can be inserted into the U-shaped groove of the U-shaped groove plate 164 in the vertical direction to complete the support network 161. It is fixed and installed in the main box body 1 and facilitates the replacement of the support net 161. The support net 161 is perpendicular to the clamping plate 163 and is used to support the test pipeline 12 , so as to realize the loading of the test pipeline 12 on the support 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 card board 163, and the mounting frame 1621 and the card board 163 are perpendicular to each other, the support net 161 is fixedly connected to the mounting frame 1621, and then passed The mounting bracket 1621 fixes the supporting net 161 on the clamping plate 163; the U-shaped slotting plate 164 is also provided with a draw-in slot anchor 1641, and one end of the bracket 1622 can be inserted on the draw-in slot anchor 1641, and the bracket 1622 The other end is rotated on the mounting frame 1621, and the bracket 1622 can support the mounting frame 1621 to strengthen the bearing capacity of the mounting frame 1621. At the same time, the rotation of the bracket 1622 on the mounting frame 1621 facilitates the clamping 163 is inserted in the U-shaped groove of the U-shaped groove plate 164.

Embodiment two

This embodiment also provides a method of using the gas rheology testing equipment, which is completed using the gas rheology testing equipment of Embodiment 1, as shown in Figure 4, the use of the gas rheology testing equipment The method includes the following steps:

S1. Connect the selected test pipeline 12 to the metal pipeline 11;

S2, control the vacuum generating unit 4, pump the metal pipe 11 and the test pipe 12 in the main box 1 into a specified negative pressure value;

S3. Control the sample injection unit 2, circulate the sample to be tested with a specific concentration into the metal pipe 11 and the test pipe 12, and make the pressure in the metal pipe 11 and the test pipe 12 reach the set value, and record the sample to be tested at this time flow value;

S4, control the temperature control unit 5, adjust the output temperature of the temperature control unit 5 to reach the set value, and record the time at this moment as the starting point of the test time;

S5. Wait until the set retention time of the sample to be tested, control the sample analysis unit 3, and analyze and record the sample to be tested;

S6, successively reset 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 replace the test pipeline 12, repeat step S2 ~ S5, carry out the corresponding test and analysis on the sample to be tested.

The use method of the gas rheology testing equipment can complete the rheological test of the sample to be tested under different temperature, pressure, flow rate and residence time conditions in a selected test pipeline, so as to obtain the test sample in a specific test environment. The test data in the best homogeneous state is formed; at the same time, the analysis accuracy of the sample to be tested can be ensured by controlling the specific test environment.

Specifically, the method for using the gas rheology testing equipment also includes the following steps:

A1, calculate the length distribution of the total length of the pipeline 12 to be tested on each support net 161, open the box door 18, connect one end of the pipeline 12 to be tested on a reducing joint 6, and wrap it in a circular form according to the distributed length On the first layer of support net 161, then wrapped around the second layer of support net 161, and so on, until the last layer, and the other end of the test pipeline 12 is connected on another reducing joint 6;

A2. Close the first valve 13 and the second valve 14, open the third valve 15, install the box door 18 on the box body 17 to form the main box 1, then open the vacuum valve 42, start the vacuum pump 41, and the main box will be The metal pipeline 11 and the test pipeline 12 in the body 1 are pumped into a specified negative pressure value; the vacuum pump 41 is closed, and the vacuum valve 42 is closed;

A3. Turn on the sample pump 21 to extract the sample to be tested; then slightly open the first valve 13 to allow the sample to be tested to flow into the metal pipe 11, and observe the digital display pressure gauge 81 until the pressure of the metal pipe 11 and the test pipe 12 Reach the set value; then close the first valve 13, then close the sample pump 21, and record the flow value of the flow meter 22 at this time;

A4, turn on the circulating pump 71, adjust the output power of the circulating pump 71, so that the flow rate of the sample to be tested reaches the set value; turn on the high and low temperature thermostat 51, adjust the output temperature setting, and after a period of time, the digital display thermometer 91 reaches the set value The value of ; record the time at this moment as the starting point of the test time;

A5. Wait until the set retention time of the sample to be tested, and at the corresponding time node, turn on the chromatograph 31, and then open the second valve 14 to detect the components of the sample to be tested; after the detection, close the second valve 14;

A6. Repeat steps A3 to A5, reset the pressure, temperature, flow rate, and residence time parameters in sequence, and perform corresponding test and analysis on the sample to be tested;

A7. After completing all series of analyzes, connect the waste sample box to the vacuum pump 41, open the vacuum pump 41 and the vacuum valve 42, extract the waste sample into the waste sample box, and the pressure to the metal pipe 11 and the test pipe 12 becomes negative pressure state, close the vacuum valve 42, vacuum pump 41, and close the waste sample box.

The above 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 residence times, and through comparative analysis of the data, the flow rate of the sample to be tested can be obtained. The relationship between the various factors of denaturation, realizes the related test of the rheology of the sample to be tested, and obtains the environmental condition when the sample is in the best homogeneous state under the specific test pipeline 12 at the same time.

Further, when analyzing test pipes 12 of different materials and lengths, open the chamber door 18, disassemble the test pipe 12 used in the last test, and replace the test pipes of different materials and different lengths through the reducing joint 6 12. Then perform corresponding test analysis according to steps A1-A7.

Further, when performing the calibration and verification of the chromatograph 31, the method for using the gas rheology testing equipment includes the following steps:

B1, open the box door 18, close the third valve 15, then install the box door 18 on the box body 17 to form the main box body 1, and connect the standard sample to the sample pump 21 interface;

B2, close the first valve 13 and the second valve 14, open the vacuum valve 42 again, start the vacuum pump 41, and the metal pipeline 11 is pumped into a specified negative pressure value; close the vacuum pump 41, and close the vacuum valve 42;

B3. Turn on the sample pump 21 to extract the standard sample; then slightly open the first valve 13 to allow the sample to be tested to flow into the metal pipeline 11, observe the digital display pressure gauge 81 at any time, adjust the sample pump 21, and control the metal pipeline 11 until the pressure of the sample to be tested in the metal pipe 11 reaches the set value; then close the first valve 13, then close the sample pump 21, and record the flow value of the flow meter 22 at this time;

B4, open the high and low temperature thermostat 51, adjust the output temperature setting, after a period of time, the digital display thermometer 91 reaches the set value; record the time at this moment as the starting point of the test time;

B5. Wait until the retention time of the standard sample is set, at the corresponding time node, open the chromatograph 31, and then open the second valve 14 to detect the components of the standard sample; close the second valve 14 after detection; for the standard sample Conduct test analysis;

B6. After the test analysis is completed, connect the waste sample box to the vacuum pump 41, open the vacuum pump 41 and the vacuum valve 42, and extract the waste sample into the waste sample box until the metal pipe 11 and the test pipe 12 become the specified negative pressure state , close the vacuum valve 42, vacuum pump 41, and close the waste sample box.

The above steps B1 to B7 can be controlled by the flow rate of the sample pump 21 and the temperature control of the high and low temperature thermostat 51, and the standard sample can be injected into the chromatograph 31 according to the specified temperature and pressure conditions, thereby improving the efficiency of calibration and verification of the chromatograph 31. accuracy.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (12)

1. A gas rheology testing device, used to test the rheology of the sample to be tested in a specific environment, and the realization conditions of the best homogenization state of the sample to be tested, characterized in that the gas rheology testing device include: Main box body (1), described main box body (1) is provided with metal pipeline (11) and test pipeline (12), and the two ends of described test pipeline (12) are all connected with described metal pipeline (11) pass; the test pipeline (12) is detachably connected to the metal pipeline (11); A sample sampling unit (2), the sample sampling unit (2) is located outside the main box (1); one end of the sample sampling unit (2) is connected to the metal pipe (11) pass, for providing the sample to be tested; A sample analysis unit (3), the sample analysis unit (3) is located outside the main box (1); one end of the sample analysis unit (3) communicates with the metal pipe (11), receiving the sample to be tested, and analyzing the sample to be tested; A vacuum generating unit (4), the vacuum generating unit (4) is located outside the main box (1); one end of the vacuum generating unit (4) communicates with the metal pipe (11), to adjust the air pressure in the metal pipeline (11) and the test pipeline (12); A temperature control unit (5), the temperature control unit (5) is located outside the main box (1); the two ends of the temperature control unit (5) are connected to the inside of the main box (1) connected to each other and used to adjust the temperature inside the main box (1). 2. The gas rheology testing device according to claim 1, characterized in that, the gas rheology testing device comprises a reducing joint (6), and the test pipe (12) passes through the metal pipe (11) The reducing joint (6) is detachably connected. 3. The gas rheology testing device according to claim 1, characterized in that, the communication place between the sample sampling unit (2) and the metal pipeline (11) is provided with a first valve (13), the The first valve (13) is arranged on the outside of the main box (1); the connection between the sample analysis unit (3) and the metal pipeline (11) is provided with a second valve (14), and the first Two valves (14) are arranged on the outside of the main box (1); a third valve (15) is arranged at the connection between the metal pipe (11) and the test pipe (12). 4. gas rheological testing equipment according to claim 1, is characterized in that, described gas rheological testing equipment also comprises cyclic power unit (7), and the two ends of described cyclic power unit (7) are all connected to said The metal pipeline (11), the circulating power unit (7) is arranged inside the main box (1); the circulating power unit (7) is used to adjust the flow rate of the sample to be tested. 5. The gas rheology testing device according to claim 1, characterized in that, a hosting assembly (16) is provided on the inner wall of the main box (1), and the hosting assembly (16) is used to support the Test pipeline (12). 6. The gas rheology testing device according to claim 5, characterized in that, the hosting assembly (16) comprises a support net (161), a support frame (162), a clamping plate (163) and a U-shaped groove plate (164), the top of the groove wall of the U-shaped groove plate (164) is fixedly connected to the inner wall of the main box (1); the support net (161) is fixedly arranged on the support frame (162) On, one end of the support frame (162) is fixed on the clamp plate (163), and the clamp plate (163) can be inserted into the U-shaped groove of the U-shaped groove plate (164); the The support net (161) is perpendicular to the clamping plate (163) and is used to support the test pipeline (12). 7. The gas rheology testing device according to claim 1, characterized in that, the main box (1) comprises a box body (17) and a box door (18), and the box door (18) can be It is connected to the box body (17) in a detachable manner. 8. The gas rheology testing device according to claim 7, characterized in that, an annular groove (181) is arranged circumferentially on the inner side wall of the box door (18), and a sealant is arranged in the annular groove The pad (182), the end of the box body (17) can be inserted into the annular groove (181) along the horizontal direction. 9. gas rheology test equipment according to claim 1, is characterized in that, described gas rheology test equipment also comprises pressure detection device (8), and described pressure detection device (8) is connected with described metal pipeline ( 11); the pressure detection device (8) is arranged outside the main box (1). 10. gas rheology test equipment according to claim 1, is characterized in that, described gas rheology test equipment also comprises temperature detection device (9), and described temperature detection device (9) is connected with described metal pipeline ( 11); the temperature detection device (9) is located outside the main box (1). 11. gas rheology test equipment according to claim 1, is characterized in that, described sample sampling unit (2) also comprises sample pump (21) and flowmeter (22); The described sample pump (21) One end communicates with the metal pipeline (11), and the flowmeter (22) is connected to the channel between the sample pump (21) and the metal pipeline (11); the flowmeter (22) is set on the outside of the main box (1). 12. A method of using gas rheology testing equipment, characterized in that the method of using the gas rheology testing equipment is completed using the gas rheology testing equipment according to any one of claims 1 to 11, the gas rheology testing equipment The use method of the rheological testing equipment comprises the following steps: S1. Connect the selected test pipeline (12) to the metal pipeline (11); S2. Control the vacuum generating unit (4), pump the metal pipe (11) and test pipe (12) in the main box (1) into a specified negative pressure value; S3. Control the sample sampling unit (2), circulate the sample to be tested at a specific concentration into the metal pipe (11) and the test pipe (12), and make the metal pipe (11) and the pressure in the test pipeline (12) reaches a set value, and records the flow value of the sample to be tested at this time; S4. Control the temperature control unit (5), adjust the output temperature of the temperature control unit (5) to reach a set value, and record the time at this moment as the starting point of the test time; S5. Wait until the set retention time of the sample to be tested, control the sample analysis unit (3), and analyze and record the sample to be tested; S6, sequentially reset 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 The retention time of the sample to be tested and the replacement of the test pipeline (12) are repeated, and steps S2 to S5 are repeated to perform corresponding test analysis on the sample to be tested.

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