CN108225436A - A kind of gas-liquid two-phase real time measure device of normal pressure state - Google Patents

Abstract

The invention discloses a gas-liquid two-phase real-time metering device in a normal pressure state, comprising a bracket, an air inlet device, a first mixing metering device, a grating reading device and a separation metering device, an air inlet device, a first mixing metering device and The separation metering device is sequentially connected and installed on the bracket, and the grating reading device is set corresponding to the first mixing metering device. The gas-liquid two-phase mixed real-time metering with a small range is realized through the setting of the air inlet device, the first mixing metering device and the grating reading device, and the real-time metering of the large-range separation is realized through the setting of the separation device. Through the above-mentioned device, not only the real-time measurement of the gas-liquid two-phase fluid can be realized, but also the measuring range can be adjusted according to the flow rate of the fluid, which has strong timeliness, high reliability and high precision.

Description

A gas-liquid two-phase real-time metering device under normal pressure

technical field

The invention belongs to the technical field of gas-liquid separation and metering, and in particular relates to a gas-liquid two-phase real-time metering device in a normal pressure state.

Background technique

Gas-water two-phase metering is a problem that needs to be solved urgently but has not been solved for a long time in many industrial productions. Both phases in the gas-liquid two-phase fluid have deformable phase interfaces, and the gas phase and liquid phase have compressibility, which is different from other types of two-phase flow (gas-solid, liquid-liquid, liquid-solid) With, for example, saturated steam metering, at the same temperature and pressure, the proportion of liquid components can range from 0% (dry saturated steam) to 100% (wet saturated steam), and the fluid density varies greatly. Traditionally, the density is determined according to temperature and pressure compensation. method cannot accurately calculate the density. However, since no feasible method has been found, we can only assume a steam humidity, which has a great impact on the accuracy of the flowmeter. The greater the humidity, the greater the error, which makes the measurement research of gas-liquid two-phase more complicated than other types of two-phase flow. .

The outlet of the laboratory scientific research process device is generally designed with a back pressure valve. The pressure of the fluid flowing out through the back pressure valve is normal pressure, and the outlet flow rate of the laboratory scientific research process can reach the order of magnitude above 100ml/min, and the small one can reach 0.01 In the order of ml/min or even smaller, general metering devices cannot meet such a wide range at the same time. At the same time, the fluid in the scientific research process also has the characteristics of small flow rate, wide flow range, and intermittent fluid flow.

In view of the above reasons, the currently used air-water metering device has the following deficiencies:

(1) Gas-water two-phase metering devices are widely used in oilfields and mines, and the technology is relatively mature; gas-water two-phase metering devices used in oilfields and mines have the characteristics of large flow and continuous fluid, which is compared with the laboratory scientific research process The application fields of the two are different in terms of the characteristics of small flow rate and wide flow range, and the fluid is sometimes continuous and sometimes intermittent. Therefore, the gas-water two-phase metering device used in the oil field cannot be directly applied to the laboratory scientific research process;

(2) Using a gas-water separator to separate the gas-water phase into single-phase gas and liquid, and then using a gas mass flowmeter and an electronic balance to measure the flow of each phase separately is the most widely used measurement method in the laboratory scientific research process. Although this method has the advantages of high reliability and high precision, the real-time performance of this method is poor, and it is not suitable for hydrate decomposition experiments, core displacement experiments and other processes that have strict real-time measurement requirements;

(3) In addition, the range of the current gas-water two-phase metering device is either not adjustable, or the adjustable range is very small, and manual adjustment of the range is required; on the other hand, the accuracy of the metering device with a large range is generally low. Metering devices with small measuring ranges generally have higher accuracy; with these two characteristics, for hydrate decomposition experiments where the fluid flow rate changes from large to small, the current gas-water metering devices cannot meet the accuracy requirements of this type of experiment.

Therefore, in view of the above deficiencies, the present invention urgently needs to provide a gas-liquid two-phase real-time metering device in a normal pressure state.

Contents of the invention

The purpose of the present invention is to provide a gas-liquid two-phase real-time metering device under normal pressure to solve the problems of difficulty and low accuracy in gas-water two-phase metering in the prior art.

The present invention provides following scheme:

A gas-liquid two-phase real-time metering device in a normal pressure state, including a bracket, an air inlet device, a first mixing metering device, a grating reading device and a separation metering device; the inlet device is installed above the bracket, including a second An air intake pipe and a torque sensor, the first air intake pipe passes through the torsion sensor, and is used to measure the weight of the liquid passing through the first air intake pipe through the torsion sensor; the first mixing metering device includes a first A volume tube and a first piston, the first volume tube is installed on the bracket and connected with the first air intake tube, one end of the first piston is inserted in the first volume tube for adjusting the The capacity of the first volume tube; the grating reading device is installed on the bracket, and is arranged corresponding to the first piston, for reading the capacity of the fluid in the first volume tube; the separation metering device It includes a gas-liquid separator, a gas flow meter and a first weighing machine, the gas-liquid separator is connected to the first capacity tube for realizing gas-liquid separation, the gas flow meter, the first weighing machine The heavy machine is respectively connected with the gas and liquid separation ports of the gas-liquid separator, and is used to measure the gas flow and liquid weight respectively.

The gas-liquid two-phase real-time metering device in a normal pressure state as described above, further preferably, further includes a second mixing metering device, the second mixing metering device has the same structure as the first mixing metering device, including A second volume tube and a second piston, the second volume tube is respectively connected with the gas-liquid separator and the second air intake pipe arranged in the air intake device.

The gas-liquid two-phase real-time metering device in a normal pressure state as described above further preferably further includes a second weighing machine, the second weighing machine is connected to the liquid separation port of the gas-liquid separator, Used to assist in measuring the weight of liquids.

The gas-liquid two-phase real-time metering device in a normal pressure state as described above further preferably further includes a first two-position three-way valve, a second two-position three-way valve, and a third two-position three-way valve for Three-way conduction; the first two-position three-way valve is set on the air intake pipe for separating the first air intake pipe and the second air intake pipe, and the second three-way valve is set on the gas-liquid Between the separator and the first capacity tube and the second capacity tube, the third two-position three-way valve is arranged between the gas-liquid separator and the first weighing machine and the second weighing machine.

The gas-liquid two-phase real-time metering device under normal pressure as described above further preferably further includes a first pushing device and a second pushing device, and the first pushing device, the second pushing device and the The first piston and the second piston are provided in one-to-one correspondence.

The gas-liquid two-phase real-time metering device in a normal pressure state as described above further preferably further includes a controller, and the controller is connected to the torque sensor, the first pushing device, the second pushing device, the grating reader, and Take device, gas-liquid separator, gas flow meter, the first weighing machine, the second weighing machine, the first two-position three-way valve, the second two-position three-way valve and the third two-position three-way valve are electrically connected, Used for auto-ranging.

The gas-liquid two-phase real-time metering device in a normal pressure state as described above, further preferably, the first volume tube is arranged vertically, and the first piston is inserted from the bottom of the first volume tube; it also includes a weight, the weight is hoisted below the first piston, and is used to balance the force on the first piston.

A gas-liquid two-phase real-time metering device under normal pressure as described above, further preferably, further includes a water avoider, and the water avoider is arranged between the gas flow meter and the gas-liquid separator, And communicate with the first weighing machine.

A gas-liquid two-phase real-time metering device under normal pressure as described above, further preferably, further includes a quick connector, the quick connector is arranged at the inlet end of the inlet pipe, and is used to quickly realize the communication of the pipeline or disconnect.

The gas-liquid two-phase real-time metering device under normal pressure as described above further preferably further includes a plurality of load-bearing casters, and the plurality of load-bearing casters are installed on the support for movement.

Compared with the prior art, the present invention has the following advantages:

The invention discloses a gas-liquid two-phase real-time metering device in a normal pressure state, which includes a bracket, an air inlet device, a first mixing metering device, a grating reading device and a separation metering device, wherein the air inlet device, the first mixing metering The setting of the device and the grating reading data realizes the real-time measurement of gas-liquid two-phase mixing in a small range; through the setting of the separation device, the real-time measurement of large-scale separation is realized. Through the above device, not only the real-time measurement of the gas-liquid two-phase fluid can be realized, but also the measuring range can be adjusted according to the flow rate of the fluid, which has strong timeliness, high reliability and high precision.

Description of drawings

Fig. 1 is the left side view of a gas-liquid two-phase real-time metering device in a normal pressure state of the present invention;

Fig. 2 is the front view of a gas-liquid two-phase real-time metering device in a normal pressure state of the present invention;

Fig. 3 is a structural schematic diagram of the first piston of the present invention.

Explanation of reference signs:

1-bracket, 2-first volume tube, 3-second volume tube, 4-second piston, 5-first piston, 6-first pushing device, 7-second pushing device, 8-gas-liquid separator , 9-gas flowmeter, 10-torque sensor, 11-water avoider, 12-first weighing machine, 13-second weighing machine, 14-first two-position three-way valve, 15-second two-position Three-way valve, 16-third two-position three-way valve, 17-second servo motor, 18-first servo motor, 19-quick connector, 20-second one-way valve, 21-first one-way valve, 22 -propelling rod, 23-weight, 24-plug, 25-connecting rod.

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 some 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", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

As shown in Figure 1-2, a gas-liquid two-phase real-time metering device in a normal pressure state includes a bracket 1, an air inlet device, a first mixing metering device, a grating reading device 26 and a separation metering device; wherein the air inlet device Installed above the bracket 1, including a first air intake pipe and a torque sensor 10, the first air intake pipe passes through the torque sensor 10, and is used to measure the weight of the liquid passing through the first air intake pipe by the torque sensor 10; the first mixing metering device includes the first air intake pipe A capacity tube 2 and a first piston 5, the first capacity tube 2 is installed on the bracket 1 and connected with the first intake tube, one end of the first piston 5 is inserted in the first capacity tube 2 for adjusting the first capacity The capacity of the tube 2; the grating reading device 26 is installed on the support 1, and is arranged correspondingly with the first piston 5, and is used to read the capacity of the fluid in the first capacity tube 2; the separation and metering device includes a gas-liquid separator 8, a gas The flow meter 9 and the first weighing machine 12, the gas-liquid separator 8 are connected with the first volume pipe 2 for gas and liquid separation, and the gas flow meter 9 and the first weighing machine 12 are connected with the gas-liquid separator 8 respectively. The gas and liquid separation port connections are used to measure gas flow and liquid weight respectively.

In the above device, the torque sensor 10 is connected to the first intake pipe for measuring the weight of the gas-liquid mixed fluid passing through the first intake pipe. At the same time, since the density of the gas is negligible relative to the liquid, the weight measured by the torque sensor 10 is is the weight of the liquid; in addition, the torque sensor 10 in this embodiment is a measuring device, in order to ensure the integrity of its measurement work, it must include a corresponding digital display device for displaying measurement data. In the first mixing metering device, before metering, it is necessary to push the first piston 5 to empty the gas in the first capacity tube 2, and then the connecting pipeline starts to intake air; with the entry of the gas-liquid mixed fluid, the first piston 5 starts to According to the position change of the first piston 5, the grating reading device 26 arranged on the side of the first piston 5 reads the volume change in the first capacity tube 2. At this time, the grating reading device 26 reads fluid The total volume of the fluid; through the total volume of the fluid and the liquid weight measured by the torque sensor 10, the volume of the gas is obtained. This stage is suitable for the measurement of a small amount of gas-liquid mixed fluid, that is, small-scale measurement. With the further inflow of the gas-liquid mixed fluid, the first piston 5 moves to the bottom of the first capacity tube 2. At this time, the range range of the first capacity tube 2 can no longer meet the gas-liquid measurement of the fluid, and the gas-liquid separator needs to be opened 8. The gas-liquid mixed fluid flows into the gas-liquid separator 8 through the pipeline between the first capacity tube 2 and the gas-liquid separator 8, and realizes the separation of gas and liquid in the gas-liquid separator 8, and the separated gas And liquid is measured by gas flow meter 9 and first weighing machine 12 again; First weighing machine 12 comprises container and electronic balance, is used for directly reading the liquid weight that flows into the container; Because this stage has realized gas-liquid separation, The vaporized liquid in the mixed fluid is completely converted into liquid, the volume is reduced, and a large range of fluid can be measured. Since the fluid is sensed and measured immediately after entering the device, this design can realize the real-time measurement of gas-liquid, that is, through the above-mentioned device, not only the real-time measurement of gas-liquid two-phase fluid can be realized, but also the flow can be automatically adjusted according to the flow rate of the fluid. Range, strong timeliness, high reliability and high precision.

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device under normal pressure disclosed in this embodiment, the first capacity tube 2 is vertically arranged, and the first piston 5 is positioned below the first capacity tube 2. Inserting; further, it also includes a weight 23, which is hoisted under the connecting rod 25, and is used to balance the force on the first piston 5. In this embodiment, the first volume tube 2 is arranged vertically, and the first piston 5 is inserted into the first volume tube 2 from below. Such an arrangement reduces the influence of the position of the first piston 5 on the volume of the mixed fluid. In the above device, the first piston assembly 5 includes a connected plug 24 and a connecting rod 25, the plug 24 is installed correspondingly to the first volume tube assembly 2, and the connecting rod 25 extends out of the first volume tube 2; the plug 24 is completely It is arranged inside the first volume tube, installed correspondingly to the inner wall of the first volume tube 2, and is used for sealing and moving smoothly; in order to ensure the sealing effect, an O-ring is also arranged on the plug 24; correspondingly, in order to avoid plugging 24 slides out of the inner wall of the first volume tube 2, and corresponding stop structures are provided at the upper and lower ends of the first volume tube 2. The setting of the connecting rod 25 is used to assist in reading data and to push the plug 24, and pushing the plug 24 is used to discharge the gas in the first volume tube before the fluid enters. The weight 23 is hoisted below the connecting rod 25 by a lead wire, and is used to balance the gravity of the piston itself, the friction between the O-ring on the piston and the first capacity tube 2, and the vacuum part of the first capacity tube 2 through the weight 23. The suction to the plug 24 makes the first piston 5 in a force-balanced state. At this time, when the gas-liquid mixed fluid from upstream enters the first capacity tube 2, a small amount of fluid can cause the first piston 5 to move downward. If the fluid entering is discontinuous, after the fluid entering causes the first piston 5 to move downward, due to the vacuum degree inside the first capacity tube 2, it will stop moving soon and restore the force balance state again. The above-mentioned setting is used to realize force balance on the first piston 5, avoid causing pressure to the fluid, affect its volume, and further reduce errors.

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device in a normal pressure state disclosed in this embodiment, a water avoider 11 is also included, and the water avoider 11 is arranged between the gas flow meter 9 and the gas-liquid separation device. On the pipeline between the device 8, and communicate with the first weighing machine 12. The water avoider 11 device has the function of passing gas but not water, and is arranged between the gas flowmeter 9 and the gas-liquid separator 8, which can further remove the liquid component in the gas component separated by the gas-liquid separator 8, and the separated liquid Imported into the container of the first weighing machine 12, the error is further reduced and the accuracy of gas-liquid measurement is improved.

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device under normal pressure disclosed in this embodiment, a quick connector 19 is also included, and the quick connector 19 is arranged at one end of the intake pipe for quick realization The connection or disconnection of pipelines reduces the user's experimental workload.

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device in a normal pressure state disclosed in this embodiment, a second mixing metering device is also included, and the second mixing metering device is mixed with the first mixing metering device. The metering devices have the same structure, including a second capacity tube 3 and a second piston 4, and the second capacity tube 3 is also respectively connected with the gas-liquid separator 8 and the second gas inlet tube arranged in the gas inlet device. The function of the second mixing metering device is the same as that of the first mixing metering device, both of which are used for gas-liquid two-phase metering in a small range; the setting of the second mixing metering device increases the measuring range of a small amount of gas-liquid mixed fluid. Preferably, a first one-way valve 21 and a second one-way valve 20 are also included, and the first one-way valve 21 and the second one-way valve 20 are provided in one-to-one correspondence with the first air intake pipe and the second air intake pipe, for limiting The direction of travel of the fluid in the first and second inlet pipes.

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device in a normal pressure state disclosed in this embodiment, a second weighing machine 13 is also included, and the second weighing machine 13 and the gas-liquid separator 8 liquid separation port connection, used to assist in measuring the weight of the liquid. Both the first weighing machine 12 and the second weighing machine 13 perform weight measurement by measuring the weight of the liquid flowing into its container such as a beaker, and for a given weighing device, the capacity of its container device is also certain. Therefore, in this embodiment, the capacity of the weighing device is increased by increasing the number of weighing devices, and then the measuring range of the measuring device in this embodiment is increased without changing the measurement accuracy of the gas-liquid separation.

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device in a normal pressure state disclosed in this embodiment, it also includes a first two-position three-way valve 14, a second two-position three-way valve 15 and The third two-position three-way valve 16 is used for three-way conduction; the first two-position three-way valve 14 is arranged on the intake pipe, and is used to separate the first intake pipe and the second intake pipe, that is, between the quick connector 19 and the second intake pipe. Between the first capacity tube 2 and the second capacity tube 3, the second two-position three-way valve is located between the gas-liquid separator 8 and the first capacity tube 2 and the second capacity tube 3, and the third two-position three-way valve 16 is located Between the gas-liquid separator 8 and the first weighing machine 12 and the second weighing machine 13 . The two-position three-way valve is a three-way connection mechanism with a selector switch. When applied to this embodiment, multi-range switching can be realized. For example, the first capacity tube 2 is used alone, and the first capacity tube 2 and the second capacity tube are used in combination. Tube 3, using the first capacity tube 2, the second capacity tube 3 and the first weighing machine 12 in combination, and using the first capacity tube 2, the second capacity tube 3, the first weighing machine 12 and the second weighing machine in combination Machine 13, that is, in this embodiment, the accuracy of fluid metering is further ensured by precisely controlling the selection range of the measuring range.

As shown in Figures 1-3, a gas-liquid two-phase real-time metering device in a normal pressure state disclosed in this embodiment also includes a first pushing device 6 and a second pushing device 7, the first pushing device 6, the second pushing device The two pushing devices 7 are provided in one-to-one correspondence with the first piston 5 and the second piston 4 for pushing the connecting rod 25 . In the present embodiment, the first pushing device 6 and the second pushing device 7 have the same structure, and both include a servo motor (the first servo motor 17 and the second servo motor 18) and a pushing rod 22, and the pushing rod 22 is arranged on the connecting rod Below 25, it is used to drive the push rod 22 to move upward through the servo motor and then push the connecting rod of the first piston 5 or the second piston 4 to move upward, mainly used for emptying the first volume tube 2 and the second piston before air intake The gas in the second capacity tube 3 , or the fluid in the first capacity tube 2 or the second capacity tube 3 is pushed into the gas-liquid separator 8 when the gas-liquid separator 8 is used to separate the fluid. In addition, in order to avoid hindering the work of the weight 23 hoisted below the connecting rod 25 , a connecting piece can also be provided on the connecting rod 25 to make the pushing position shift from the center line of the first piston 5 or the second piston 4 .

As shown in Figures 1-3, in a gas-liquid two-phase real-time metering device in a normal pressure state disclosed in this embodiment, a controller is also included, and the controller is respectively connected with the torque sensor 10, the first pushing device 6, the second Two pushing device 7, grating reading device 26, gas-liquid separator 8, gas flow meter 9, first weighing machine 12, second weighing machine 13, first two-position three-way valve 14, second two-position three-way valve The through valve 15 is electrically connected with the third two-position three-way valve 16 for automatic range adjustment. In this embodiment, the first two-position three-way valve 14, the second two-position three-way valve 15, and the third two-position three-way valve 16 are solenoid valves, and the torque sensor 10, grating reading device 26, gas The flowmeter 9, the first weighing machine 12 and the second weighing machine 13 are data measuring devices, the gas-liquid separator 8, the first two-position three-way valve 14, the second two-position three-way valve 15, the third two-position The three-way valve 16 is an executive device, which is used to enable the controller to obtain the flow velocity and gravity of the fluid through the torque sensor 10, obtain the volume of the current fluid through the grating reading device 26, and obtain the gas through the gas flow meter 9 by connecting with the controller. The volume and the weight of the accumulated liquid are acquired and weighed by the first weighing machine 12, the state of the fluid is judged, and then the range is automatically adjusted by controlling various actuators to realize fully automatic control.

In the above-described embodiment, its automatic control includes four stages, the first stage: control the first two-position three-way valve 14 to guide the first capacity tube 2, and realize gas-liquid metering by the torque sensor 10 and the grating reading device 26; Stage: Knowing that the capacity of the first capacity tube 2 is full through the grating reading device 26, the first two-position three-way valve 14 is controlled to guide the second capacity tube 3, and the gas-liquid measurement is realized through the torque sensor 10 and the grating reading device 26; In the third stage, when it is known that the capacity of the second volume tube 3 is full through the grating reading device 26, the second two-position three-way valve 15 is turned on and the gas-liquid separator 8, the gas flow meter 9 and the first weighing machine 12 are opened. , to realize gas-liquid measurement; in the fourth stage, when the first weighing machine 12 is informed that the first weighing machine 12 is full, the gas-liquid separator 8 and the second weighing machine 13 are connected to realize gas-liquid measurement. Of course, in the above control process, if the fluid flow rate measured by the torque sensor 10 is large, the first, second or third stage can also be selectively skipped, and the measurement of the next stage can be performed directly. Through the above settings, the controller automatically selects the optimal solution, and then realizes the function of self-feedback adjustment range; and different ranges will make the device have different accuracy under different flow rates, that is, the device makes the gas-liquid two The phase real-time online metering device has the characteristics of high precision.

In addition, in a gas-liquid two-phase real-time metering device under normal pressure disclosed in this embodiment, a hose connection is used between the torque sensor 10 and its corresponding digital display device, so that the influence of the pipeline on the torque sensor 10 can be ignored. At the same time, in order to increase the mobility of the above-mentioned device, a plurality of load-bearing casters are also arranged on the support.

Compared with the prior art, a gas-liquid two-phase real-time metering device under normal pressure disclosed by the present invention has the following beneficial effects:

1. The present invention not only realizes the real-time metering of the gas-liquid two-phase fluid, but also adjusts its range according to the flow rate of the fluid through the setting of the bracket, the air inlet device, the first mixing metering device, the grating reading device and the separation metering device. Strong realization, high reliability and high precision;

2. In the present invention, through the setting of the second mixing metering device and the second bearing machine, the measuring ranges of the small range and the large range are respectively increased without substantially changing the measurement accuracy, and the accuracy of gas-liquid mixed fluid measurement is further improved sex;

3. In the present invention, through the setting of three two-position three-way valves, the above-mentioned devices are integrated to combine a variety of optional ranges, and cooperate with the controller to realize the automatic control of the device and the automatic adjustment of the range;

4. In the present invention, by setting the quick joint 19 at the inlet of the air intake pipe, the user can realize the connection or disconnection of the pipeline without tools, which reduces the experimental workload of the user;

5. In the present invention, the weight 23 is set to balance the gravity of the piston itself, the friction between the O-ring on the piston and the capacity tube, and the suction force of the vacuum part of the container to the piston, so that the piston is in a force-balanced state. Reduce the impact on the volume of gas-liquid mixed fluid;

6. In the present invention, the liquid component in the separated gas is further purified through the installation of the water avoider 11 device that passes through the gas but not the water, so that the measurement accuracy is more accurate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. A gas-liquid two-phase real-time metering device in a normal pressure state, characterized in that it includes a support, an air inlet device, a first mixing metering device, a grating reading device and a separation metering device; The air intake device is installed above the bracket, and includes a first air intake pipe and a torque sensor, the first air intake pipe passes through the torque sensor, and is used to measure the air flow passing through the first air intake pipe through the torque sensor. the weight of the liquid; The first mixing and metering device includes a first volume tube and a first piston, the first volume tube is installed on the bracket and connected to the first air intake tube, one end of the first piston is inserted into the In the first volume tube, it is used to adjust the capacity of the first volume tube; The grating reading device is installed on the bracket and arranged corresponding to the first piston, and is used to read the volume of the fluid in the first volume tube; The separation and metering device includes a gas-liquid separator, a gas flow meter and a first weighing machine, the gas-liquid separator is connected with the first capacity tube for realizing gas and liquid separation, the gas flow meter, The first weighing machine is respectively connected with the gas and liquid separation ports of the gas-liquid separator, and is used for measuring gas flow and liquid weight respectively. 2. The gas-liquid two-phase real-time metering device in a normal pressure state according to claim 1, further comprising a second mixing metering device, the second mixing metering device and the first mixing metering device The structures are the same, including a second volume tube and a second piston, and the second volume tube is respectively connected with the gas-liquid separator and the second air intake pipe arranged in the air intake device. 3. The gas-liquid two-phase real-time metering device in a normal pressure state according to claim 2, further comprising a second weighing machine, the second weighing machine and the gas-liquid separator Liquid separation port connection, used to assist in measuring liquid weight. 4. A gas-liquid two-phase real-time metering device under normal pressure according to claim 3, further comprising a first two-position three-way valve, a second two-position three-way valve and a third two-position three-way valve. The one-way valve is used for three-way conduction; the first two-position three-way valve is arranged on the intake pipe, and is used to separate the first air intake pipe and the second air intake pipe, and the second three-way valve is set Between the gas-liquid separator and the first capacity pipe and the second capacity pipe, the third two-position three-way valve is arranged between the gas-liquid separator and the first weighing machine and the second weighing machine. between machines. 5. A gas-liquid two-phase real-time metering device under normal pressure according to claim 4, further comprising a first pushing device and a second pushing device, the first pushing device, the second pushing device The pushing device is provided in one-to-one correspondence with the first piston and the second piston. 6. A gas-liquid two-phase real-time metering device under normal pressure according to claim 5, characterized in that it also includes a controller, and the controller is connected with the torque sensor, the first pushing device, the second Pushing device, grating reading device, gas-liquid separator, gas flow meter, first weighing machine, second weighing machine, first two-position three-way valve, second two-position three-way valve and third two-position three-way valve Electrically connected to the valve for automatic range adjustment. 7. A gas-liquid two-phase real-time metering device under normal pressure according to claim 1 or 2, characterized in that, the first volume tube is arranged vertically, and the first piston starts from the first volume Inserting under the tube; also includes a weight, the weight is hoisted under the first piston, and is used to balance the first piston under force. 8. A gas-liquid two-phase real-time metering device under normal pressure according to claim 1 or 2, characterized in that, it also includes a water avoider, and the water avoider is arranged between the gas flowmeter and the Between the gas-liquid separators and communicated with the first weighing machine. 9. A gas-liquid two-phase real-time metering device under normal pressure according to claim 4, further comprising a quick connector, the quick connector is arranged at the inlet end of the inlet pipe for rapid Realize the connection or disconnection of the pipeline. 10. A gas-liquid two-phase real-time metering device under normal pressure according to claim 1 or 2, characterized in that, it also includes a plurality of load-bearing casters, and a plurality of load-bearing casters are installed on the support for use on mobile.