Multiphase flow mixing method, multiphase flow mixing device and application system

Abstract

The application discloses a multiphase flow mixing method, a multiphase flow mixing device and a multiphase flow mixing application system. The multiphase flow mixing device comprises a first tank body, a second tank body, a first pump, a second pump, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline, a seventh pipeline, an eighth pipeline, a ninth pipeline, a tenth pipeline, an eleventh pipeline, a twelfth pipeline, a thirteenth pipeline, a fourteenth pipeline, a fifteenth pipeline, a sixteenth pipeline, a seventeenth pipeline, an eighteenth pipeline, a nineteenth pipeline, a twentieth pipeline, a twenty-first pipeline, a twenty-second pipeline, a twenty-third pipeline, a twenty-fourth pipeline, a twenty-fifth pipeline, a twenty-sixth pipeline, a twenty-seventh pipeline, a twenty-eighth pipeline, a twenty-ninth pipeline, a thirtieth pipeline, a thirty-first pipeline, a thirty-second pipeline, a thirty-third pipeline, a thirty-fourth pipeline, a thirty-fifth pipeline, a thirty-sixth pipeline, a thirty-se

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas-liquid mixed delivery, in particular to a multiphase flow mixed delivery method, a multiphase flow mixed delivery device and a multiphase flow mixed delivery application system. BACKGROUND

[0002] The traditional process of oil and gas extraction and delivery in an oilfield is to separate oil, gas and water first, and then deliver them respectively by using an oil pump, a water pump and a compressor. The process flow is complex, the cost is high and the equipment is difficult to maintain. The multiphase flow mixed delivery device saves cost and simplifies structure because it does not need to set up a separation device, and has been more and more widely used in oil and gas transmission.

[0003] Because the mixture of the multiphase flow to be delivered is not uniformly mixed with gas and liquid, that is, the content of gas and liquid in the multiphase flow changes over time. When the gas content in the gas-liquid mixture sucked into the multiphase flow mixed delivery device is large, or all the fluid sucked into the multiphase flow mixed delivery device at a certain moment is gas, the pressure in the tank body for sucking the multiphase flow mixture to be delivered in the multiphase flow mixed delivery device will instantaneously increase, which will affect the suction of the multiphase flow mixture. On the other hand, if the gas pressure fluctuation in the tank body is too large, the tank body will have a risk of damage, which will affect the normal and safe operation of the multiphase flow mixed delivery device. SUMMARY

[0004] The embodiments of the present application provide a multiphase flow mixed delivery method, a multiphase flow mixed delivery device and a multiphase flow mixed delivery application system to solve the technical problem that the existing multiphase flow mixed delivery device affects the normal and safe operation of the device due to the excessive fluctuation of the gas pressure in the tank body.

[0005] In a first aspect, the present application provides a multiphase flow mixed delivery method, comprising:

[0006] detecting whether the multiphase flow mixture to be delivered is sucked into any one of the first tank body and the second tank body;

[0007] If the multiphase flow mixture to be delivered is sucked into one of the first tank body and the second tank body, the liquid in the tank body with the multiphase flow mixture to be delivered is delivered to the tank body without the multiphase flow mixture to be delivered, the liquid entering the tank body without the multiphase flow mixture to be delivered compresses the gas in the tank body and discharges the multiphase flow mixture in the tank body, and the gas in the tank body with the multiphase flow mixture to be delivered is discharged.

[0008] Further, in the step of discharging the gas in the tank body with the multiphase flow mixture to be delivered, comprising:

[0009] judging whether a preset delivery condition is reached;

[0010] If the split condition is reached, a split control valve on a split pipeline in communication with a tank body into which the multiphase flow mixture to be transported is drawn is opened, and gas in the tank body is discharged.

[0011] Further, in the step of judging whether the split condition is reached, the step comprises:

[0012] obtaining a gas pressure value in the tank body into which the multiphase flow mixture to be transported is drawn and a gas pressure value on the split pipeline;

[0013] If the gas pressure value in the tank body is greater than the gas pressure value on the split pipeline, it is judged that the split condition is reached.

[0014] Further, in the step of judging whether the preset split condition is reached, the step comprises:

[0015] detecting an open / close state of a feed valve connected to the tank body into which the multiphase flow mixture to be transported is drawn;

[0016] If the feed valve is in an open state, the gas pressure value in the tank body is obtained;

[0017] judging whether the gas pressure value is greater than a first gas pressure preset value;

[0018] If the gas pressure value is greater than the first gas pressure preset value, it is judged that the split condition is reached.

[0019] Further, in the step of judging whether the split condition is reached, the step comprises:

[0020] detecting a flow rate of the multiphase flow mixture to be transported drawn into the tank body;

[0021] judging whether the flow rate is greater than a flow rate preset value;

[0022] If the flow rate is greater than the flow rate preset value, it is judged that the split condition is reached.

[0023] Further, the multiphase flow mixing and transporting method further comprises:

[0024] obtaining a gas pressure value in the tank body into which the multiphase flow mixture to be transported is drawn;

[0025] judging whether the gas pressure value is less than a second gas pressure preset value;

[0026] If the gas pressure value is less than the second gas pressure preset value, the split control valve on the split pipeline is closed.

[0027] In a second aspect, the application provides a multiphase flow mixing and transporting device, comprising:

[0028] a first tank body;

[0029] a second tank body;

[0030] a reversing mechanism, which drives the liquid in the first tank and the second tank to reciprocate, so that the first tank and the second tank alternately form a vacuum suction cavity and / or a compression discharge cavity, to achieve continuous mixing and delivery of the liquid, gas or gas-liquid mixture;

[0031] an output mechanism, which communicates with any one of the first tank and the second tank, and is used to deliver the gas, liquid or gas-liquid mixture discharged from the first tank or the second tank;

[0032] a sub-delivery mechanism, which comprises a sub-delivery pipeline for discharging gas, and the sub-delivery pipeline communicates with any one of the first tank and the second tank.

[0033] Further, the sub-delivery pipeline is provided with a sub-delivery control valve, which is used to control the delivery of the gas in any one of the first tank or the second tank to the sub-delivery pipeline when the tank sucks in the multiphase flow mixture.

[0034] Further, the multiphase flow mixing and delivering device further comprises a gas pressure detection mechanism, and the gas pressure detection mechanism is arranged in the first tank and the second tank respectively, and the gas pressure detection mechanism and the sub-delivery control valve are linked and controlled.

[0035] In a third aspect, the present application provides a multiphase flow mixing and delivering application system, which comprises the multiphase flow mixing and delivering device provided in the embodiments of the present application, and each of the multiphase flow mixing and delivering devices is used to sub-deliver gas and multiphase flow mixture.

[0036] The present application provides a multiphase flow mixing and delivering method, a multiphase flow mixing and delivering device and a multiphase flow mixing and delivering application system, by arranging a sub-delivery mechanism which communicates with the first tank and the second tank, the gas in the tank which sucks in the multiphase flow mixture to be delivered is discharged through the sub-delivery mechanism in the process of delivering the multiphase flow mixture, which avoids the generation of large gas pressure fluctuation in the tank, and ensures the safe use of the multiphase flow mixing and delivering device and the efficiency of the multiphase flow mixing and delivering. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0038] Figure 1 The flowchart of the multiphase flow mixing and delivering method provided in the embodiments of the present application;

[0039] Figure 2 For Figure 1 Flowchart of step S2 in the embodiment;

[0040] Figure 3 For Figure 2 Flowchart of step S2.1 in the embodiment;

[0041] Figure 4 For Figure 2 Another flowchart of step S2.1 in the embodiment;

[0042] Figure 5 For Figure 2 Still another flowchart of step S2.1 in the embodiment;

[0043] Figure 6 For Figure 1 Another flowchart of step S3 in the embodiment;

[0044] Figure 7 Structure diagram of the multiphase flow mixing and conveying device provided in the embodiment.

[0045] In the figure, the multiphase flow mixing and conveying device 10; the first tank body 101; the second tank body 102; the reversing mechanism 103; the power pump 1030; the first pipeline group 1031; the second pipeline group 1032; the branch pipeline 1031a; the branch pipeline 1031b; the branch pipeline 1031c; the branch pipeline 1032a; the branch pipeline 1032b; the first reversing valve 1033a; the second reversing valve 1033b; the input mechanism 104; the feed pipeline 104a; the first sub-feed pipeline 104b; the second sub-feed pipeline 104c; the output mechanism 105; the first inlet 1041; the second inlet 1042; the first one-way valve 1061; the second one-way valve 1062; the third one-way valve 1063; the fourth one-way valve 1064; the first outlet 1051; the second outlet 1052; the distribution mechanism 107; the first distribution pipeline 1071; the second distribution pipeline 1072; the first distribution control valve 1073; the second distribution control valve 1074; the first distribution port 1075; the second distribution port 1076; the detection mechanism 211; the first sensor 2101; the second sensor 2102; the control mechanism 212. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0047] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0048] In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, for purposes of explanation, specific details are set forth. It is apparent to those skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the present application. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed. Unless otherwise specified, the parallel or vertical in the orientation involved in the present application is not strictly parallel or vertical, as long as the corresponding structure can achieve the corresponding purpose.

[0049] Please refer to Figure 1 The embodiment of the present application provides a multiphase flow mixing method, a multiphase flow mixing device and a multiphase flow mixing system, which are described in detail below.

[0050] In a first aspect, the present application provides a multiphase flow mixing method, as shown in Figure 1 The method comprises the following steps:

[0051] S1, detecting whether the multiphase flow mixture to be conveyed is sucked into any one of the first tank body and the second tank body;

[0052] S2, if the multiphase mixture to be transported is sucked into one of the first tank and the second tank, transporting the liquid in the tank which has sucked the multiphase mixture to be transported to the tank which has not sucked the multiphase mixture to be transported, compressing the gas in the tank which has not sucked the multiphase mixture to be transported by the liquid entering the tank, and discharging the multiphase mixture in the tank which has not sucked the multiphase mixture to be transported; and discharging the gas in the tank which has sucked the multiphase mixture to be transported.

[0053] First, it is detected whether the first tank or the second tank sucks the multiphase mixture into the tank. The way of sucking the multiphase mixture to be transported can be to provide negative pressure by other structure or to generate negative pressure by transporting the liquid from the first tank to the second tank.

[0054] If the multiphase mixture is sucked by the first tank, the first tank is the tank which has sucked the multiphase mixture to be transported, the second tank is the tank which has not sucked the multiphase mixture to be transported, the first tank forms a vacuum suction chamber, and the second tank forms a compression discharge chamber; the first tank transports the liquid in the tank to the second tank, the liquid level in the second tank rises, the gas above the liquid level is compressed, and the compressed gas and the multiphase mixture are discharged from the second tank; at the same time, the multiphase mixture sucked by the first tank is separated into gas and liquid after being sucked into the first tank, the gas is on the surface of the liquid, and the gas in the first tank is discharged from the first tank.

[0055] If the multiphase mixture is sucked by the second tank, the second tank is the tank which has sucked the multiphase mixture to be transported, the first tank is the tank which has not sucked the multiphase mixture to be transported, the second tank forms a vacuum suction chamber, and the first tank forms a compression discharge chamber; the second tank transports the liquid in the tank to the first tank, the liquid level in the first tank rises, the gas above the liquid level is compressed, and the compressed gas and the multiphase mixture are discharged from the first tank; at the same time, the multiphase mixture sucked by the second tank is separated into gas and liquid after being sucked into the second tank, the gas is on the surface of the liquid, and the gas in the second tank is discharged from the second tank.

[0056] In the conveying process of the multiphase flow mixture, the gas in the tank body to be suctioned for conveying the multiphase flow mixture is discharged from the tank body while the liquid is conveyed to the tank body not suctioned for conveying the multiphase flow mixture, avoiding the interruption of the suction of the multiphase flow mixture caused by the too small or even no negative pressure of the tank body when the gas in the multiphase flow mixture suctioned by the tank body is too much at a moment, ensuring the conveying efficiency of the multiphase flow mixture. On the other hand, the risk of damage of the tank body to be suctioned for conveying the multiphase flow mixture due to the too large instantaneous pressure is also reduced, ensuring the safe operation of the equipment. The multiphase flow mixture can be an oil-gas mixture or an oil-gas-water mixture.

[0057] Figure 7 A structure schematic diagram of a multiphase flow mixing device for realizing the multiphase flow mixing method provided in the present application is provided, and the multiphase flow mixing method provided in the present application is further described below Figure 7 It should be noted that Figure 7 The multiphase flow mixing device shown in the present application is only used to illustrate the multiphase flow mixing method in the present application. The multiphase flow mixing device for realizing the multiphase flow mixing is not limited to Figure 7 the structure in the present application.

[0058] As shown in Figure 7 , the multiphase flow mixing device includes a multiphase flow mixing mechanism 10, an output mechanism 105 and a distribution mechanism 107. The multiphase flow mixing mechanism 10 includes a first tank body 101, a second tank body 102 and a reversing mechanism 103. The input mechanism 104 includes a feed pipeline 104a, a first sub-feed pipeline 104b and a second sub-feed pipeline 104c. The first sub-feed pipeline 104b is in communication with the first tank body 101, and the second sub-feed pipeline 104c is in communication with the second tank body 102, respectively. A second one-way valve 1062 is arranged on the first sub-feed pipeline 104b, and a third one-way valve 1063 is arranged on the second sub-feed pipeline 104c. The second one-way valve 1062 and the third one-way valve 1063 are feed valves for controlling the conduction and closing of the first sub-feed pipeline 104b and the second sub-feed pipeline 104c. It should be noted that other types of valves can also be used as the feed valves, and when the feed valves are one-way valves, the structure can be relatively simple.

[0059] The multiphase flow mixture is suctioned into the first tank body 101 through the first inlet 1041, or the multiphase flow mixture is suctioned into the second tank body 102 through the second inlet 1042. The first inlet 1041 is the communication port of the input mechanism 104 to the first tank body 101, and the second inlet 1042 is the communication port of the input mechanism 104 to the second tank body 102.

[0060] The distribution mechanism 107 comprises a first distribution pipeline 1071 and a second distribution pipeline 1072, the distribution mechanism 107 has a first distribution port 1075 on the first tank 101 and a second distribution port 1076 on the second tank 102, the first distribution pipeline 1071 is provided with a first distribution control valve 1073, and the second distribution pipeline 1072 is provided with a second distribution control valve 1074.

[0061] It should be noted that in the feed pipeline 104a, a flow detection mechanism such as a flow meter (not shown in the figure) can be arranged to measure the multiphase flow mixture entering the multiphase flow mixing device. The flow detection mechanism can be linked to the first distribution control valve 1073 and the second distribution control valve 1074 for linkage control, so as to adjust the output according to the multiphase flow mixture entering the multiphase flow mixing device, thereby improving the conveying efficiency of the multiphase flow mixing device.

[0062] The output mechanism 105 is in communication with the first tank 101 and the second tank 102, the first tank 101 has a first outlet 1051, and the second tank 102 has a second outlet 1052, the first outlet 1051 is a communication port of the output mechanism 105 on the first tank, and the second outlet 1052 is a communication port of the output mechanism 105 on the second tank; the output mechanism 105 is provided with a first one-way valve 1061 and a fourth one-way valve 1064, the first one-way valve 1061 controls the opening and closing of the first outlet 1051, and the fourth one-way valve 1064 controls the opening and closing of the second outlet 1052.

[0063] The communication pipeline, the power pump and the at least one valve; one end of the communication pipeline is in communication with the first tank, and the other end is in communication with the second tank, and the power pump and the valve are arranged on the communication pipeline.

[0064] In the reversing mechanism 103, the branch pipelines 1031a, 1031c and 1031b constitute a first pipeline group 1031 for liquid flowing from the first tank 101 to the second tank 102, the branch pipelines 1032b, 1031c and 1032a constitute a second pipeline group 1032 for liquid flowing from the second tank 102 to the first tank 101, one end of the first pipeline group 1031 and the second pipeline group 1032 is in communication with the first tank 101, and the other end is in communication with the second tank 102; the power pump 1030 is arranged on the branch pipeline 1031c, and the power pump 1030 can drive liquid to flow from the first tank 101 to the second tank 102 or to flow from the second tank 102 to the first tank 101; the reversing mechanism 103 further comprises a first reversing valve 1033a and a second reversing valve 1033b.

[0065] When the first reversing valve 1033a is open and the second reversing valve 1033b is closed, the liquid in the first tank 101 flows to the second tank 102 through the branch pipelines 1031a, 1031c, and 1031b under the action of the power pump 1030. The first tank 101 forms a vacuum suction chamber. The second one-way valve 1062 is opened and the first one-way valve 1061 is closed. The multiphase flow mixture is sucked into the first tank 101 through the first inlet 1041. The first inlet 1041 is the connection port between the input mechanism 104 and the first tank 101.

[0066] After the multiphase flow mixture is drawn into the first tank 101, the gas and liquid separate, with the gas positioned above the liquid surface. Driven by the reversing mechanism 103, the liquid in the first tank 101 flows to the second tank 102, causing the liquid level in the second tank 102 to rise and compress the gas above the liquid surface. The third one-way valve 1063 closes, and the fourth one-way valve 1064 opens, allowing the compressed gas and gas-liquid mixture in the second tank 102 to be discharged from the output mechanism 105. Simultaneously, the first distribution control valve 1073 opens, and the gas in the first tank 101 is discharged from the first distribution port 1075 to the distribution mechanism 107.

[0067] like Figure 7 As shown, the multiphase flow mixing device includes a detection mechanism 211, which includes a first sensor 2101 installed on the first tank and a second sensor 2102 installed on the second tank. Both the first sensor 2101 and the second sensor 2102 are electrically connected to the control mechanism 212.

[0068] The detection mechanism 211 can be a liquid level detection mechanism, that is, the first sensor 2101 and the second sensor 2102 can be liquid level gauges. The first sensor 2101 and the second sensor 2102 can detect the liquid level in the first tank 101 and the second tank 102 and send the data to the control mechanism 212. Based on the liquid level information in the first tank 101 and the second tank 102, the control mechanism controls the reversing mechanism 103 to reverse, so that the reversing mechanism 103 can reverse at an appropriate time, thereby improving the conveying efficiency of the multiphase flow mixture.

[0069] When the reversing mechanism 103 reverses, the first reversing valve 1033a is closed and the second reversing valve 1033b is opened. Under the action of the power pump 1030, the liquid in the second tank 102 flows to the first tank 101 through the branch pipelines 1032b, 1031c, and 1032a. The second tank 102 forms a vacuum suction chamber. The third one-way valve 1063 is opened and the fourth one-way valve 1064 is closed. The multiphase flow mixture is sucked into the second tank 102 through the second inlet 1042. The second inlet 1042 is the connection port between the input mechanism 104 and the second tank 102.

[0070] After the multiphase flow mixture is sucked into the second tank 102, the gas and the liquid are separated, and the gas is above the liquid surface. The liquid in the second tank 102 flows to the first tank 101 under the drive of the reversing mechanism 103, the liquid level in the first tank 101 rises, and the gas above the liquid surface is compressed; the second one-way valve 1062 is closed, the first one-way valve 1061 is opened, and the compressed gas and the gas-liquid mixture in the first tank 101 are discharged from the output mechanism 105. At the same time, the second distribution control valve 1074 is opened, and the gas in the second tank 102 is discharged from the second distribution port 1076 to the distribution mechanism 107.

[0071] By arranging the distribution mechanism 107 in the output mechanism 105 of the multiphase flow mixing device, when the first tank 101 or the second tank 102 is in a vacuum suction state, the gas in the tank can be discharged from the first distribution pipeline 1071 and the second distribution pipeline 1072, respectively, thereby reducing the pressure in the tank and avoiding safety hazards caused by excessive pressure in the tank, and ensuring the safe operation of the device. At the same time, since the distribution mechanism can function as a gas distribution mechanism, the efficiency of transporting the multiphase flow mixture is improved.

[0072] It should be noted that the first distribution control valve 1073 and the second distribution control valve 1074 can be pneumatic valves, or electromagnetic valves, or electric valves. The types of the first distribution control valve 1073 and the second distribution control valve 1074 can be determined according to actual use conditions and costs, and are not limited herein.

[0073] In some embodiments of the present application, as shown in Figure 2 S2.1, determining whether a distribution condition is reached;

[0074] S2.1, determining whether a distribution condition is reached;

[0075] S2.2, if the distribution condition is reached, opening a distribution control valve on a distribution pipeline in communication with a tank into which the multiphase flow mixture to be transported is sucked, and discharging the gas in the tank.

[0076] When the distribution is performed, the gas in the tank into which the multiphase flow mixture to be transported is sucked is discharged through the distribution mechanism. Since the tank sucks the multiphase flow mixture by negative pressure, the distribution of the gas is only needed when there is a large fluctuation in the gas pressure in the tank into which the multiphase flow mixture to be transported is sucked at a certain moment, i.e., the distribution condition needs to be determined before the distribution of the gas is performed. If the distribution condition is reached, the distribution control valve on the distribution pipeline in communication with the tank into which the multiphase flow mixture to be transported is sucked is opened, and the gas in the tank is discharged.

[0077] Specifically, if the first tank body is the tank body into which the multiphase flow mixture to be delivered is sucked, the first partial delivery control valve on the first partial delivery pipeline in communication with the first tank body is opened, so that the gas in the first tank body is discharged to the first partial delivery pipeline.

[0078] If the second tank body is the tank body into which the multiphase flow mixture to be delivered is sucked, the second partial delivery control valve on the second partial delivery pipeline in communication with the second tank body is opened, so that the gas in the second tank body is discharged to the second partial delivery pipeline.

[0079] It should be noted that whether the partial delivery condition is reached can be determined according to whether the gas pressure in the first tank body or the second tank body is greater than the gas pressure on the partial delivery pipeline, whether the gas pressure in the first tank body or the second tank body is greater than a preset gas pressure value, or whether the flow rate of the multiphase flow mixture to be delivered sucked into the first tank body or the second tank body is greater than a preset flow rate.

[0080] In some embodiments of the present application, as shown in Figure 3 The step S2.1 includes the following steps:

[0081] S2.11a, obtaining the gas pressure value of the tank body into which the multiphase flow mixture to be delivered is sucked and the gas pressure value on the partial delivery pipeline;

[0082] S2.12a, if the gas pressure value in the tank body is greater than the gas pressure value on the partial delivery pipeline, it is determined that the partial delivery condition is reached.

[0083] If the feeding valve on the feeding pipeline in communication with the first tank body is in an open state, at this time, the first tank body is the tank body into which the multiphase flow mixture to be delivered is sucked, and the second tank body is the tank body into which the multiphase flow mixture to be delivered is not sucked; the gas pressure in the first tank body and the gas pressure on the partial delivery pipeline are detected and compared; if the gas pressure in the first tank body is greater than the gas pressure value on the partial delivery pipeline, the first partial delivery control valve on the first partial delivery pipeline in communication with the first tank body is opened, so that the gas in the first tank body is discharged to the first partial delivery pipeline.

[0084] If the feeding valve on the feeding pipeline in communication with the second tank body is in an open state, at this time, the second tank body is the tank body into which the multiphase flow mixture to be delivered is sucked, and the first tank body is the tank body into which the multiphase flow mixture to be delivered is not sucked; the gas pressure in the second tank body and the gas pressure on the partial delivery pipeline are detected and compared; if the gas pressure in the second tank body is greater than the gas pressure value on the partial delivery pipeline, the second partial delivery control valve on the second partial delivery pipeline in communication with the second tank body is opened, so that the gas in the second tank body is discharged to the second partial delivery pipeline.

[0085] The opening and closing of the distribution valve on the distribution pipeline is controlled by detecting whether the gas pressure value in the first tank body or the second tank body is greater than the gas pressure on the distribution pipeline, so that when the multiphase flow mixture sucked by the first tank body or the second tank body contains more gas, the gas can be timely distributed out, and the transportation efficiency of the multiphase flow mixture is improved.

[0086] Figure 7 A structural schematic diagram of a multiphase flow mixing device for realizing the multiphase flow mixing method provided in the present application is provided, and the multiphase flow mixing method provided in the present application is further described below Figure 7 It should be noted that Figure 7 The multiphase flow mixing device shown in the figure is only used to illustrate the multiphase flow mixing method in the present application. The multiphase flow mixing device for realizing the multiphase flow mixing method is not limited to Figure 7 The structure in the figure.

[0087] The input mechanism 104 is in communication with the first tank body 101 and the second tank body 102, respectively. The input mechanism 104 is provided with a second one-way valve 1062 and a third one-way valve 1063. The multiphase flow mixture is sucked into the first tank body 101 through a first inlet 1041, or the multiphase flow mixture is sucked into the second tank body 102 through a second inlet 1042. The inlet valve on the inlet pipeline connected to the first tank body 101 is the second one-way valve 1062, and the inlet valve on the inlet pipeline connected to the second tank body 102 is the third one-way valve 1063. A control mechanism 212 is provided. A gas pressure gauge (not shown in the figure) is arranged on the first distribution pipeline 1071 and the second distribution pipeline 1072. The gas pressure gauge is in electrical communication with the control mechanism 212 to transmit the detected data to the control mechanism 212. The first tank body 101 is provided with a first sensor 2101, and the second tank body 102 is provided with a second sensor 2102. The first sensor 2101 and the second sensor 2102 are in electrical communication with the control mechanism 212 to transmit the detected data to the control mechanism 212.

[0088] When the first reversing valve 1033a in the reversing mechanism 103 is opened and the second reversing valve 1033b is closed, the liquid in the first tank body 101 flows to the second tank body 102 through the branch pipelines 1031a, 1031c and 1031b under the action of the power pump 1030. The first tank body 101 forms a vacuum suction chamber, and the second tank body 102 forms a compression discharge chamber. The second one-way valve 1062 is opened, and the third one-way valve 1063 is closed. The control system 212 detects that the second one-way valve 1062 is in an open state and the third one-way valve 1063 is in a closed state, and determines that the first tank body 101 is the tank body that sucks the multiphase flow mixture to be transported at this time. The multiphase flow mixture is sucked into the first tank body 101 through the first inlet 1041.

[0089] The liquid in the first tank body 101 flows to the second tank body 102 under the drive of the reversing mechanism 103, the liquid level in the second tank body 102 rises, compressing the gas above the liquid surface, the third one-way valve 1063 is closed, the fourth one-way valve 1064 is opened, and the gas-liquid mixture in the second tank body 102 is discharged from the output mechanism 105. The barometer detects the gas pressure on the first sub-pipeline 1071 in real time and sends the detection data to the control system 212, the first sensor 2101 detects the gas pressure in the first tank body 101 in real time and sends the data to the control system 212, and the control system 212 compares the two data; if the gas pressure in the first tank body 101 is greater than the gas pressure on the first sub-pipeline 1071, the first sub-transport control valve 1073 on the first sub-pipeline 1071 communicating with the first tank body 101 is opened, and the gas in the first tank body 101 is discharged to the first sub-pipeline 1071 through the first sub-transport port 1075.

[0090] When the first reversing valve 1033a in the reversing mechanism 103 is closed and the second reversing valve 1033b is opened, the liquid in the second tank body 102 flows to the first tank body 101 under the action of the power pump 1030 through the branch pipelines 1032b, 1031c and 1032a, the second tank body 102 forms a vacuum suction chamber, the first tank body 101 forms a compression discharge chamber, the third one-way valve 1063 is opened, the second one-way valve 1062 is closed, the control system 212 detects that the third one-way valve 1063 is in the opened state and the second one-way valve 1062 is in the closed state, and judges that the second tank body 102 is the tank body that sucks the multi-phase flow mixture to be transported at this time, and the first tank body 101 is the tank body that does not suck the multi-phase flow mixture to be transported, and the multi-phase flow mixture is sucked into the second tank body 102 through the second inlet 1042.

[0091] The liquid in the second tank body 102 flows to the first tank body 101 under the drive of the reversing mechanism 103, the liquid level in the first tank body 101 rises, compressing the gas above the liquid surface; the second one-way valve 1062 is closed, the first one-way valve 1061 is opened, and the gas-liquid mixture in the first tank body 101 is discharged from the output mechanism 105. The barometer detects the gas pressure on the second sub-pipeline 1072 in real time and sends the detection data to the control system 212, the second sensor 2102 detects the gas pressure in the second tank body 102 in real time and sends the data to the control system 212, and the control system 212 compares the two data; if the gas pressure in the second tank body 102 is greater than the gas pressure on the second sub-pipeline 1072, the second sub-transport control valve 1074 on the second sub-pipeline 1072 communicating with the second tank body 102 is opened, and the gas in the second tank body 102 is discharged to the first sub-pipeline 1072 through the second sub-transport port 1076.

[0092] In some embodiments of the present application, as Figure 4As shown, step S2.1 includes the following steps:

[0093] S2.11b, detecting the opening and closing state of the inlet valve connected with the tank body which inhales the mixture of the multi-phase flow to be delivered;

[0094] S2.12b, if the inlet valve is in the opening state, acquiring the gas pressure value in the tank body;

[0095] S2.13b, judging whether the gas pressure value is greater than a first gas pressure preset value;

[0096] S2.14b, if the gas pressure value is greater than the first gas pressure preset value, judging whether the preset delivery condition is reached.

[0097] First, the opening and closing state of the inlet valve on the inlet pipeline connected with the first tank body or the opening and closing state of the inlet valve on the inlet pipeline connected with the second tank body is detected to judge which of the first tank body or the second tank body is the tank body which inhales the mixture of the multi-phase flow to be delivered.

[0098] If the inlet valve on the inlet pipeline connected with the first tank body is in the opening state, at this time, the first tank body is the tank body which inhales the mixture of the multi-phase flow to be delivered, and the second tank body is the tank body which does not inhale the mixture of the multi-phase flow to be delivered; the gas pressure value in the first tank body is detected and compared with the first gas pressure preset value, if the detected gas pressure value is greater than the first gas pressure preset value, it is judged that the delivery condition is reached, the first delivery control valve on the first delivery pipeline connected with the first tank body is opened, and the gas in the first tank body is discharged to the first delivery pipeline.

[0099] If the inlet valve on the inlet pipeline connected with the second tank body is in the opening state, at this time, the second tank body is the tank body which inhales the mixture of the multi-phase flow to be delivered, and the first tank body is the tank body which inhales the mixture of the multi-phase flow to be delivered; the gas pressure value in the second tank body is detected and compared with the first gas pressure preset value, if the detected gas pressure value is greater than the first gas pressure preset value, it is judged that the delivery condition is reached, the second delivery control valve on the second delivery pipeline connected with the second tank body is opened, and the gas in the second tank body is discharged to the second delivery pipeline.

[0100] The first gas pressure preset value can be obtained according to the volume of the tank, material properties and other parameters, and the theoretical calculation and test results. The first gas pressure preset value must be less than the maximum limit gas pressure that causes damage to the tank, and sufficient safety margin is reserved to ensure that the tank will not be damaged due to excessive gas pressure. In addition, the delivery of the multiphase flow mixture also needs to be considered when setting the first gas pressure preset value. It can be understood that if the first gas pressure preset value is too large, the distribution control valve will open late, causing the exhaust to be not timely, which will affect the multiphase flow mixture being sucked into the tank; if the first gas pressure preset value is too small, even if the distribution control valve on the distribution mechanism is opened, the gas in the tank cannot be discharged through the distribution mechanism, that is, the distribution of the gas cannot be carried out. The first gas pressure preset value can be adjusted according to the actual demand and the use of the multiphase flow mixing device.

[0101] By detecting whether the gas pressure in the first tank or the second tank is greater than the first gas pressure preset value to control the opening of the distribution control valve corresponding to the first tank or the second tank, the pressure in the first tank or the second tank is ensured not to be too large, and the early opening of the distribution control valve is avoided to affect the delivery of the multiphase flow mixture; in addition, the pressure in the tank for gas distribution is increased, and the distribution efficiency of the gas is improved.

[0102] Figure 7 A structure diagram of a multiphase flow mixing device for realizing the multiphase flow mixing method provided in the present application is provided, and the multiphase flow mixing method provided in the present application will be further described below Figure 7 It should be noted that Figure 7 The multiphase flow mixing device shown in the above is only used to illustrate the multiphase flow mixing method in the present application. The multiphase flow mixing device for realizing the multiphase flow mixing is not limited to the structure in the above. Figure 7 The multiphase flow mixing device for realizing the multiphase flow mixing is not limited to the structure in the above.

[0103] The first sensor 2101 and the second sensor 2102 are gas pressure sensors, which are used to detect the gas pressure in the first tank 101 and the second tank 102 in real time, and send the detected data to the control mechanism 212. It should be noted that the positions of the first sensor 2101 and the second sensor 2102 can be adjusted according to the actual situation, and are not limited to the positions in the above; the first gas pressure preset value is set in the control mechanism 212 in advance. Figure 7

[0104] ​When the reversing mechanism 103 drives the liquid in the first tank 101 to flow to the second tank 102, the first tank 101 is the tank that sucks in the multiphase flow mixture to be transported, and the first tank 101 sucks in the multiphase flow mixture from the first inlet 1041. After the multiphase flow mixture enters the first tank 101, the gas and the liquid are separated, and the gas is located above the liquid. The first sensor 2101 detects the gas pressure in the first tank 101 in real time and sends the detected data to the control mechanism 212. When the control mechanism 212 determines that the gas pressure in the first tank 102 is greater than the first gas pressure preset value, the control mechanism 212 controls the first sub-transport control valve 1073 to open, and the gas in the first tank 101 is discharged to the first sub-transport pipeline 1071.

[0105] When the reversing mechanism 103 drives the liquid in the second tank 102 to flow to the first tank 101, the second tank 102 is the tank that sucks in the multiphase flow mixture to be transported, and the second tank 102 sucks in the multiphase flow mixture from the second inlet 1042. After the multiphase flow mixture enters the second tank 102, the gas and the liquid are separated, and the gas is located above the liquid. The second sensor 2102 detects the gas pressure in the second tank 102 in real time and sends the detected data to the control mechanism 212. When the control mechanism 212 determines that the gas pressure in the second tank 102 is greater than the first gas pressure preset value, the control mechanism 212 controls the second sub-transport control valve 1074 to open, and the gas in the second tank 102 is discharged to the second sub-transport pipeline 1072.

[0106] In some embodiments of the present application, as shown in Figure 5 The step S2.1 includes the following steps:

[0107] S2.11c, detecting the flow rate of the multiphase flow mixture to be transported sucked into the tank;

[0108] S2.12c, determining whether the flow rate is greater than the flow rate preset value;

[0109] S2.13c, if the flow rate is greater than the flow rate preset value, determining that the preset sub-transport condition is reached.

[0110] Firstly, the opening and closing state of the feeding valve on the feeding pipeline connected to the first tank or the opening and closing state of the feeding valve on the feeding pipeline connected to the second tank can be detected to determine which of the first tank or the second tank is the tank that sucks in the multiphase flow mixture to be transported.

[0111] If the inlet valve on the inlet pipeline connected to the first tank is open, the first tank is the tank that sucks in the multiphase flow mixture, and the second tank is the tank that does not suck in the multiphase flow mixture; the flow of the multiphase flow mixture sucked into the first tank is detected and compared with the preset flow value, and if the detected flow is greater than the preset flow value, it is determined that the split conveying condition is reached, the first split conveying control valve on the first split conveying pipeline connected to the first tank is opened, and the gas in the first tank is discharged to the first split conveying pipeline.

[0112] If the inlet valve on the inlet pipeline connected to the second tank is open, the second tank is the tank that sucks in the multiphase flow mixture, and the first tank is the tank that sucks in the multiphase flow mixture; the flow of the multiphase flow mixture sucked into the second tank is detected and compared with the preset flow value, and if the detected flow is greater than the preset flow value, it is determined that the split conveying condition is reached, the second split conveying control valve on the second split conveying pipeline connected to the second tank is opened, and the gas in the second tank is discharged to the second split conveying pipeline.

[0113] It should be noted that the preset flow value can be the flow of the liquid in the first tank driven by the reversing mechanism to the second tank, or the flow of the liquid in the second tank driven by the reversing mechanism to the first tank. The preset flow value can be calculated according to the structure and power of the reversing mechanism, or obtained by experiment.

[0114] When the reversing mechanism drives the liquid to flow from the first tank to the second tank, the first tank sucks in the multiphase flow mixture, and if the flow of the multiphase flow mixture sucked into the first tank is greater than the flow of the liquid in the first tank to the second tank, the multiphase flow mixture in the first tank will continuously increase, causing the pressure in the first tank to increase, thereby affecting the suction of the multiphase flow mixture in the first tank and the safe operation of the multiphase flow conveying device. When the reversing mechanism drives the liquid to flow from the second tank to the first tank, if the flow of the multiphase flow mixture sucked into the second tank is greater than the flow of the liquid in the second tank to the first tank, the multiphase flow mixture in the second tank will continuously increase, causing the pressure in the second tank to increase, thereby affecting the suction of the multiphase flow mixture in the second tank and the safe operation of the multiphase flow conveying device.

[0115] Since the gas pressure in the tank of the multiphase flow conveying device fluctuates greatly during the conveying of the multiphase flow mixture, the detection of the gas pressure is not accurate, thereby affecting the timing of the opening of the split conveying control valve. Therefore, by detecting whether the flow of the multiphase flow mixture sucked into the first tank or the second tank is greater than the preset flow value to control the opening of the split conveying control valve corresponding to the first tank or the second tank, the premature opening of the split conveying control valve is avoided, which affects the conveying of the multiphase flow mixture, and the split conveying efficiency of the gas is improved.

[0116] Figure 7 A structural schematic diagram of a multiphase flow mixing device for implementing the multiphase flow mixing method provided in the present application is provided below in combination with Figure 7 The multiphase flow mixing method provided in the present application is further described. It should be noted that Figure 7 The multiphase flow mixing device shown in the above is only used to illustrate the multiphase flow mixing method in the present application. The multiphase flow mixing device for implementing the multiphase flow mixing method is not limited to Figure 7 the structure in the above.

[0117] A flow meter (not shown in the figure) electrically connected to the control mechanism 212 is arranged on the pipeline through which the input structure 104 communicates with the first tank body 101 and the second tank body 102, i.e., a flow meter is arranged on the first sub-feeding pipeline 104b and the second sub-feeding pipeline 104c, to detect the flow of the multiphase flow mixture to be transported into the first tank body 101 or the second tank body 102 and send the detection data to the control mechanism 212; the flow preset value is set in the control mechanism 212, and the control mechanism 212 compares the detected flow with the flow preset value.

[0118] When the reversing mechanism 103 drives the liquid in the first tank body 101 to flow to the second tank body 102, the first tank body 101 is the tank body into which the multiphase flow mixture to be transported is sucked, and the first tank body 101 sucks the multiphase flow mixture from the first inlet 1041. The flow meter (not shown in the figure) detects the flow of the multiphase flow mixture sucked into the first tank body 101 in real time and sends the detected data to the control mechanism 212. When the control mechanism 212 determines that the detected flow is greater than the flow preset value, the control mechanism 212 controls the first sub-transport control valve 1073 to open, and the gas in the first tank body 101 is discharged to the first sub-transport pipeline 1071.

[0119] When the reversing mechanism 103 drives the liquid in the second tank body 102 to flow to the first tank body 101, the second tank body 102 is the tank body into which the multiphase flow mixture to be transported is sucked, and the second tank body 102 sucks the multiphase flow mixture from the second inlet 1042. The flow meter (not shown in the figure) detects the flow of the multiphase flow mixture sucked into the second tank body 102 in real time. When the control mechanism 212 determines that the gas pressure in the second tank body 102 is greater than the flow preset value, the control mechanism 212 controls the second sub-transport control valve 1074 to open, and the gas in the second tank body 102 is discharged to the second sub-transport pipeline 1072.

[0120] In some embodiments of the present application, as shown in Figure 6 The multiphase flow mixing method further includes the following steps:

[0121] S2.3, obtaining the gas pressure value in the tank body into which the multiphase flow mixture to be transported is sucked;

[0122] S2.4, judging whether the gas pressure value is less than a second gas pressure preset value;

[0123] S2.5, closing the distribution control valve on the distribution pipeline.

[0124] Firstly, the open or close state of the inlet valve on the inlet pipeline connected with the first tank or the open or close state of the inlet valve on the inlet pipeline connected with the second tank can be detected to determine which tank, the first tank or the second tank, is the tank that sucks in the multiphase flow mixture to be transported.

[0125] If the inlet valve on the inlet pipeline connected with the first tank is in the open state, at this time, the first tank is the tank that sucks in the multiphase flow mixture to be transported, and the second tank is the tank that does not suck in the multiphase flow mixture to be transported; the gas pressure value in the first tank is detected and compared with the second gas pressure preset value, if the detected gas pressure value is less than the second gas pressure preset value, the first distribution control valve on the first distribution pipeline connected with the first tank is closed, and the distribution of gas is stopped.

[0126] If the inlet valve on the inlet pipeline connected with the second tank is in the open state, at this time, the second tank is the tank that sucks in the multiphase flow mixture to be transported, and the first tank is the tank that sucks in the multiphase flow mixture to be transported; the gas pressure value in the second tank is detected and compared with the second gas pressure preset value, if the detected gas pressure value is less than the second gas pressure preset value, the second distribution control valve on the second distribution pipeline connected with the second tank is closed, and the distribution of gas is stopped.

[0127] When the gas is distributed in the first tank or the second tank and the gas is discharged, the gas pressure in the tank decreases, and when the gas pressure in the tank decreases to a certain value, i.e., the tank reaches a certain negative pressure, at this time, it is not necessary to discharge the gas again, and the distribution control valve on the distribution pipeline corresponding to the first tank or the second tank can be closed to prevent the gas in the distribution pipeline from flowing back into the tank and causing the gas pressure in the tank to fluctuate again, thereby affecting the suction of the multiphase flow mixture and ensuring the transportation efficiency of the multiphase flow mixture.

[0128] It should be noted that the second gas pressure preset value can be determined through multiple tests according to the actual use of the multiphase flow mixing and transporting device.

[0129] Figure 7 A structure schematic diagram of a multiphase flow mixing and transporting device for implementing the multiphase flow mixing and transporting method provided in the present application is provided, and the multiphase flow mixing and transporting method provided in the present application is further described below. Figure 7 The multiphase flow mixing and transporting method provided in the present application is further described. It should be noted that, Figure 7The multiphase flow mixing device shown in the figure is only used as an example to illustrate the multiphase flow mixing method in the present application. The multiphase flow mixing device used to realize the multiphase flow mixture mixing is not limited to Figure 7 the structure in the figure.

[0130] The first sensor 2101 and the second sensor 2102 are gas pressure sensors used to detect the gas pressure in the first tank body 101 and the second tank body 102 in real time and send the detected data to the control mechanism 212. It should be noted that the positions of the first sensor 2101 and the second sensor 2102 can be adjusted according to actual conditions and are not limited to the positions in the figure; the second gas pressure preset value is set in the control mechanism 212 in advance. Figure 7

[0131] When the reversing mechanism 103 drives the liquid in the first tank body 101 to flow to the second tank body 102, the first tank body 101 is the tank body that sucks in the multiphase flow mixture to be transported, and the first tank body 101 sucks in the multiphase flow mixture from the first inlet 1041. After the multiphase flow mixture enters the first tank body 101, the gas and the liquid are separated, the gas is located above the liquid, after the first distribution control valve 1073 is opened, the gas in the first tank body 101 is discharged to the first distribution pipeline 1071, and the gas pressure in the first tank body 101 is reduced; the first sensor 2101 detects the gas pressure in the first tank body 101 in real time and sends the detected data to the control mechanism 212, when the control mechanism 212 judges that the gas pressure in the first tank body 102 is less than the second gas pressure preset value, the control mechanism 212 controls the first distribution control valve 1073 to be closed, and the discharge of the gas in the first tank body 101 is stopped.

[0132] When the reversing mechanism 103 drives the liquid in the second tank body 102 to flow to the first tank body 101, the second tank body 102 is the tank body that sucks in the multiphase flow mixture to be transported, and the second tank body 102 sucks in the multiphase flow mixture from the second inlet 1042. After the multiphase flow mixture enters the second tank body 102, the gas and the liquid are separated, the gas is located above the liquid, after the second distribution control valve 1074 is opened, the gas in the second tank body 102 is discharged to the second distribution pipeline 1072, and the gas pressure in the second tank body 102 is reduced; the second sensor 2102 detects the gas pressure in the second tank body 102 in real time and sends the detected data to the control mechanism 212, when the control mechanism 212 judges that the gas pressure in the second tank body 102 is less than the second gas pressure preset value, the control mechanism 212 controls the second distribution control valve 1074 to be closed, and the discharge of the gas in the second tank body 102 is stopped.

[0133] In a second aspect, the present application provides a multiphase flow mixing device used to realize the multiphase flow mixing method.

[0134] As Figure 7 ​As shown, the multiphase flow mixing device includes a multiphase flow mixing mechanism 10, an output mechanism 105 and a distribution mechanism 107. The multiphase flow mixing mechanism 10 includes a first tank 101, a second tank 102 and a reversing mechanism 103. The input mechanism 104 is in communication with the first tank 101 and the second tank 102 respectively, and the input mechanism 104 is provided with a second one-way valve 1062 and a third one-way valve 1063. The multiphase flow mixture is sucked into the first tank 101 through a first inlet 1041, or the multiphase flow mixture is sucked into the second tank 102 through a second inlet 1042. The output mechanism 105 is provided with a first one-way valve 1061 and a fourth one-way valve 1064, and the first one-way valve 1061 controls the opening and closing of a first outlet 1051, and the fourth one-way valve 1064 controls the opening and closing of a second outlet 1052.

[0135] The distribution mechanism 107 includes a first distribution pipeline 1071 and a second distribution pipeline 1072, and the first distribution pipeline 1071 is provided with a first distribution control valve 1073, and the second distribution pipeline 1072 is provided with a second distribution control valve 1074.

[0136] In the reversing mechanism 103, the branch pipelines 1031a, 1031c and 1031b constitute a first pipeline group 1031 for the liquid to flow from the first tank 101 to the second tank 102, and the branch pipelines 1032b, 1031c and 1032a constitute a second pipeline group 1032 for the liquid to flow from the second tank 102 to the first tank 101. The power pump 1030 in the reversing mechanism 103 can drive the liquid to flow from the first tank 101 to the second tank 102, or to drive the liquid to flow from the second tank 102 to the first tank 101. The reversing mechanism 103 further includes a first reversing valve 1033a and a second reversing valve 1033b.

[0137] When the first reversing valve 1033a is opened and the second reversing valve 1033b is closed, the liquid in the first tank 101 flows to the second tank 102 through the branch pipelines 1031a, 1031c and 1031b under the action of the power pump 1030, the first tank 101 forms a vacuum suction chamber, the second one-way valve 1062 is opened, the first one-way valve 1061 is closed, and the multiphase flow mixture is sucked into the first tank 101 through the first inlet 1041.

[0138] After the multiphase flow mixture is sucked into the first tank 101, the gas and the liquid are separated, and the gas is above the liquid surface. The liquid in the first tank 101 flows to the second tank 102 under the drive of the reversing mechanism 103, the liquid level in the second tank 102 rises, the gas above the liquid surface is compressed, the third one-way valve 1063 is closed, and the fourth one-way valve 1064 is opened. The compressed gas and the gas-liquid mixture in the second tank 102 are discharged from the output mechanism 105. At the same time, the first distribution control valve 1073 is opened, and the gas in the first tank 101 is discharged from the first distribution port 1075 to the distribution mechanism 107.

[0139] When the first reversing valve 1033a is closed and the second reversing valve 1033b is opened, the liquid in the second tank 102 flows to the first tank 101 through the branch pipelines 1032b, 1031c, and 1032a under the action of the power pump 1030. The second tank 102 forms a vacuum suction chamber, the third one-way valve 1063 is opened, and the fourth one-way valve 1064 is closed. The multiphase flow mixture is sucked into the second tank 102 through the second inlet 1042.

[0140] After the multiphase flow mixture is sucked into the second tank 102, the gas and the liquid are separated, and the gas is above the liquid surface. The liquid in the second tank 102 flows to the first tank 101 under the drive of the reversing mechanism 103, the liquid level in the first tank 101 rises, and the gas above the liquid surface is compressed. The second one-way valve 1062 is closed, and the first one-way valve 1061 is opened. The compressed gas and the gas-liquid mixture in the first tank 101 are discharged from the output mechanism 105. At the same time, the second distribution control valve 1074 is opened, and the gas in the second tank 102 is discharged from the second distribution port 1076 to the distribution mechanism 107.

[0141] By arranging the distribution mechanism 107 in the output mechanism 105 of the multiphase flow mixing and conveying device, when the first tank 101 or the second tank 102 sucks the multiphase flow mixture, the gas in the tank can be discharged from the first distribution pipeline 1071 or the second distribution pipeline 1072, respectively, to reduce the pressure in the first tank or the second tank. When the multiphase flow mixture sucked into the first tank or the second tank contains a large amount of gas, the pressure fluctuation in the first tank or the second tank is not too large, the suction of the multiphase flow mixture is not interrupted, the safety risk caused by the excessive instantaneous gas pressure in the tank is reduced, and the normal and safe operation of the multiphase flow mixing and conveying device is ensured. At the same time, since the distribution mechanism can distribute the gas, the conveying efficiency of the multiphase flow mixture is improved.

[0142] In some embodiments of the present application, the multiphase flow mixing and conveying device further comprises a gas pressure detection structure. For example, as shown in FIG. 1, the multiphase flow mixing and conveying device further comprises a gas pressure detection structure 108. Figure 7As shown, the first sensor 2101 and the second sensor 2102 are gas pressure sensors, and the first sensor 2101 and the second sensor 2102 are electrically connected to the control mechanism 212, so as to detect the gas pressure in the first tank 101 and the second tank 102 in real time, and send the detected data to the control mechanism 212.

[0143] When the reversing mechanism 103 drives the liquid in the first tank 101 to flow to the second tank 102, the first tank 101 is the tank that inhales the multiphase flow mixture to be transported, and the first tank 101 inhales the multiphase flow mixture from the first inlet 1041. After the multiphase flow mixture enters the first tank 101, the gas and the liquid are separated, and the gas is located above the liquid. The first sensor 2101 detects the gas pressure in the first tank 101 in real time and sends the detected data to the control mechanism 212. The first gas pressure preset value and the second gas pressure preset value are set in the control mechanism in advance. When the control mechanism 212 judges that the gas pressure in the first tank 102 is greater than the first gas pressure preset value, the control mechanism 212 controls the first distribution control valve 1073 to open, and the gas in the first tank 101 is discharged to the first distribution pipeline 1071. When the control mechanism 212 judges that the gas pressure in the first tank 102 is less than the second gas pressure preset value, the control mechanism 212 controls the first distribution control valve 1073 to close, and the discharge of the gas in the first tank 101 is stopped.

[0144] When the reversing mechanism 103 drives the liquid in the second tank 102 to flow to the first tank 101, the second tank 102 is the tank that inhales the multiphase flow mixture to be transported, and the second tank 102 inhales the multiphase flow mixture from the second inlet 1042. After the multiphase flow mixture enters the second tank 102, the gas and the liquid are separated, and the gas is located above the liquid. The second sensor 2102 detects the gas pressure in the second tank 102 in real time and sends the detected data to the control mechanism 212. When the control mechanism 212 judges that the gas pressure in the second tank 102 is greater than the first gas pressure preset value, the control mechanism 212 controls the second distribution control valve 1074 to open, and the gas in the second tank 102 is discharged to the second distribution pipeline 1072. When the control mechanism 212 judges that the gas pressure in the second tank 102 is less than the second gas pressure preset value, the control mechanism 212 controls the second distribution control valve 1074 to close, and the discharge of the gas in the second tank 102 is stopped.

[0145] After the gas pressure detection mechanism, i.e., the first sensor 2101 and the second sensor 2102, is arranged in the multiphase flow mixed conveying device, whether the gas pressure in the first tank body 101 or the second tank body 102 is greater than the first gas pressure preset value can be detected to control the opening of the corresponding sub-conveying control valve of the first tank body 101 or the second tank body 102, which can ensure that the pressure in the first tank body or the second tank body is not too large, avoid the influence of the early opening of the sub-conveying control valve on the conveying of the multiphase flow mixture, and increase the pressure in the tank body for gas sub-conveying, thereby improving the gas sub-conveying efficiency.

[0146] In addition, whether the gas pressure in the first tank body 101 or the second tank body 102 is less than the second gas pressure preset value can be detected to control the closing of the corresponding sub-conveying control valve of the first tank body 101 or the second tank body 102, so that the first tank body 101 or the second tank body 102 can maintain a certain gas pressure, thereby accelerating the speed of liquid reciprocating flow between the first tank body 101 and the second tank body 102 and improving the efficiency of multiphase flow mixed conveying. It can be understood that the first gas pressure preset value and the second gas pressure preset value can be determined according to the actual multiphase flow mixed conveying demand.

[0147] In a third aspect, the present application provides a multiphase flow mixed conveying application system, which comprises the multiphase flow mixed conveying device provided in the embodiments of the present application, and each multiphase flow mixed conveying device is used to realize gas-liquid mixed conveying and gas sub-conveying.

[0148] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the detailed description of other embodiments in the foregoing, which will not be described here again.

[0149] In the implementation, each unit or structure can be realized as an independent entity, or can be combined as the same or several entities, and the specific implementation of each unit or structure can be referred to the method embodiments in the foregoing, which will not be described here again.

[0150] The specific implementation of each operation can be referred to the foregoing embodiments, which will not be described here again.

[0151] The principles and implementation manners of the present application are described by using specific examples, and the above embodiment descriptions are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A multiphase flow commingling method, characterized by, The method comprises the following steps: detecting whether the to-be-transported multiphase flow mixture is sucked into any one of the first tank and the second tank; detecting the opening and closing state of the inlet valve on the inlet pipeline connected to the first tank or the opening and closing state of the inlet valve on the inlet pipeline connected to the second tank to determine which tank, the first tank or the second tank, has the to-be-transported multiphase flow mixture sucked into it; if the to-be-transported multiphase flow mixture is sucked into one of the first tank and the second tank, transporting the liquid in the tank having the to-be-transported multiphase flow mixture sucked into it into the tank not having the to-be-transported multiphase flow mixture sucked into it, compressing the gas in the tank not having the to-be-transported multiphase flow mixture sucked into it by the liquid transported into the tank, and discharging the multiphase flow mixture in the tank not having the to-be-transported multiphase flow mixture sucked into it; and discharging the gas in the tank having the to-be-transported multiphase flow mixture sucked into it. In the step of discharging the gas in the tank having the to-be-transported multiphase flow mixture sucked into it, the method comprises the following steps: determining whether a split-transport condition is met; the split-transport condition is determined according to whether the gas pressure in the first tank or the second tank is greater than the gas pressure on the split-transport pipeline, or according to whether the gas pressure in the first tank or the second tank is greater than a preset gas pressure value, or according to whether the flow rate of the to-be-transported multiphase flow mixture sucked into the first tank or the second tank is greater than a preset flow rate value; if the split-transport condition is met, opening a split-transport control valve on the split-transport pipeline connected to the tank having the to-be-transported multiphase flow mixture sucked into it to discharge the gas in the tank; and while the liquid in the tank having the to-be-transported multiphase flow mixture sucked into it is transported into the tank not having the to-be-transported multiphase flow mixture sucked into it, the gas in the tank having the to-be-transported multiphase flow mixture sucked into it is also discharged from the tank.

2. The multiphase flow commingling method of claim 1, wherein, In the step of determining whether the preset split-transport condition is met, the method comprises the following steps: obtaining the gas pressure value in the tank having the to-be-transported multiphase flow mixture sucked into it and the gas pressure value on the split-transport pipeline; if the gas pressure value in the tank is greater than the gas pressure value on the split-transport pipeline, it is determined that the split-transport condition is met.

3. The multiphase flow commingling method of claim 1, wherein, In the step of determining whether the preset split-transport condition is met, the method comprises the following steps: detecting the opening and closing state of the inlet valve connected to the tank having the to-be-transported multiphase flow mixture sucked into it; if the inlet valve is in an open state, obtaining the gas pressure value in the tank; determining whether the gas pressure value is greater than a first preset gas pressure value; if the gas pressure value is greater than the first preset gas pressure value, it is determined that the split-transport condition is met.

4. The multiphase flow commingling method as defined in claim 1, wherein, In the step of determining whether the preset split-transport condition is met, the method comprises the following steps: detecting the flow rate of the to-be-transported multiphase flow mixture sucked into the tank; determining whether the flow rate is greater than a preset flow rate value; if the flow rate is greater than the preset flow rate value, it is determined that the split-transport condition is met.

5. The multiphase flow commingling method of any one of claims 1-4, wherein, The multiphase flow mixing method further comprises the following steps: obtaining the gas pressure value in the tank having the to-be-transported multiphase flow mixture sucked into it; determining whether the gas pressure value is less than a second preset gas pressure value; if the gas pressure value is less than the second preset gas pressure value, closing the split-transport control valve on the split-transport pipeline.

6. A multiphase flow mixing device, characterized by The multiphase flow mixing device is used to perform the multiphase flow mixing method according to any one of claims 1 to 5, and the multiphase flow mixing device comprises: a first tank; a second tank; A reversing mechanism drives the liquid in the first and second tanks to reciprocate, so that the first and second tanks alternately form a vacuum suction chamber and / or a compression discharge chamber, to achieve continuous mixing and delivery of the liquid, gas or gas-liquid mixture; An output mechanism is in communication with either of the first and second tanks, and is used to deliver the gas, liquid or gas-liquid mixture discharged from the first or second tank; The delivery mechanism includes a delivery pipeline for delivering the gas, which is in communication with either of the first and second tanks; A flow detection mechanism is provided on the inlet pipeline, and the inlet valve is a one-way valve.

7. The multiphase flow mixing device of claim 6, wherein, A delivery control valve is provided on the delivery pipeline, and is used to control the delivery of the gas in the first or second tank to the delivery pipeline when the tank is sucking in the multiphase flow mixture.

8. The multiphase flow mixing device of claim 7, wherein, The multiphase flow mixing and delivery device further includes a gas pressure detection mechanism, which is provided in each of the first and second tanks, and is linked to the delivery control valve for linkage control.

9. A multiphase flow commingling system, comprising: The multiphase flow mixing and delivery device as claimed in any one of claims 6 to 8 is used to deliver the gas and the multiphase flow mixture.

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