A gas-liquid two-phase flow balance control and pressure compensation device

Abstract

The utility model relates to a kind of gas-liquid two-phase flow flow balance control and pressure compensation device, gas-liquid mixing field.It includes gas pressure control system, liquid flow control system and gas-liquid mixing system;Gas pressure control system, liquid flow control system and gas-liquid mixing system intercommunication;Gas pressure control system includes gas low-pressure tank and gas high-pressure tank, gas backflow tee joint is provided with gas flowmeter and gas check valve on the pipeline between gas-liquid mixing system;The circulation outlet of liquid tank is connected by liquid circulation pipeline, liquid circulation pipeline tee joint and the circulation inlet of liquid tank intercommunication;Liquid circulation pipeline tee joint is provided with liquid proportional regulating valve, liquid flow transmitter, liquid check valve on the pipeline intercommunication between gas-liquid mixing system.The utility model has the characteristics of compact structure, reduce energy consumption, can realize gas-liquid two-phase flow subsection real-time monitoring operation, simultaneously can carry out dynamic balance adjustment of gas pressure and liquid flow based on flow variation.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid mixing, specifically a gas-liquid two-phase flow flow balance control and pressure compensation device. Background Technology

[0002] Hydrogen peroxide (H2O2), as an important green oxidant, is widely used in water treatment, chemical synthesis, and medical disinfection. Traditional industrial production relies on energy-intensive anthraquinone recycling processes, which suffer from high raw material consumption, numerous byproducts, and significant environmental impact. In recent years, the direct synthesis of H2O2 via electrochemical two-electron oxygen reduction reaction has become a research hotspot due to its clean raw materials (oxygen and water) and mild reaction conditions (room temperature and pressure).

[0003] However, in actual production applications, existing reactors mostly employ constant pressure or single-phase flow control strategies, which are difficult to adapt to dynamic load changes. They require frequent adjustments to gas / liquid flow rates, increasing energy consumption and easily causing flow instability, which leads to decreased product selectivity and reduced catalytic efficiency. Utility Model Content

[0004] The purpose of this invention is to design a gas-liquid two-phase flow flow balance control and pressure compensation device, which features a compact structure and reduced energy consumption. It can realize segmented real-time monitoring and operation of gas-liquid two-phase flow, and can dynamically balance and adjust gas pressure and liquid flow based on flow changes.

[0005] To achieve the above objectives, this utility model provides a gas-liquid two-phase flow flow balance control and pressure compensation device, comprising: a gas pressure control system, a liquid flow control system, and a gas-liquid mixing system; wherein the gas pressure control system, the liquid flow control system, and the gas-liquid mixing system are connected by pipelines; The gas pressure control system includes a low-pressure gas tank and a high-pressure gas tank. The low-pressure gas tank, the high-pressure gas tank and the gas-liquid mixing system are connected by a gas return tee. A gas flow meter and a gas check valve are installed on the pipeline between the gas return tee and the gas-liquid mixing system. The liquid flow control system includes a liquid tank, a liquid circulation pipeline, a liquid circulation pump, a liquid circulation pipeline tee, a liquid proportional regulating valve, and a liquid flow transmitter; the circulation outlet of the liquid tank is connected to the circulation inlet of the liquid tank through the liquid circulation pipeline and the liquid circulation pipeline tee; a liquid proportional regulating valve, a liquid flow transmitter, and a liquid check valve are installed on the pipeline connecting the liquid circulation pipeline tee and the gas-liquid mixing system.

[0006] Furthermore, the low-pressure gas tank is connected to a gas return tee via a gas circulation pipeline, and a gas proportioning valve is installed on the gas circulation pipeline.

[0007] Furthermore, the low-pressure gas tank is connected to a quick-connect gas fitting and an inlet hand valve.

[0008] Furthermore, the gas pressure control system also includes a gas compressor, which is connected to a low-pressure gas tank and a high-pressure gas tank respectively.

[0009] Furthermore, a gas pressure transmitter is connected to the high-pressure gas tank.

[0010] Furthermore, the liquid flow control system also includes an opening regulating valve and a liquid pipeline pressure transmitter; the opening regulating valve is located near the circulation inlet of the liquid circulation pipeline, and a liquid pipeline pressure transmitter is also installed on the pipeline connecting the liquid circulation pipeline tee and the gas-liquid mixing system.

[0011] Furthermore, the gas-liquid mixing system includes a gas-liquid mixing pipeline, a gas-liquid mixer, a gas-liquid mixture pressure transmitter, a gas-liquid mixture flow meter, and a gas-liquid mixture manual valve; the gas-liquid mixing pipeline is sequentially equipped with a gas-liquid mixer, a gas-liquid mixture pressure transmitter, a gas-liquid mixture flow meter, and a gas-liquid mixture manual valve.

[0012] The beneficial effects of this utility model are as follows: This invention enables segmented real-time monitoring of gas-liquid two-phase flow and adjusts the flow based on flow rate changes, avoiding complex operating conditions. It employs a segmented independent control mode to regulate the gas-liquid two-phase flow, while using a cyclic method for auxiliary adjustment, effectively saving raw material consumption and reducing system operating costs. The gas-liquid gathering and transportation process is simple and clear, with simplified pipeline paths, resulting in reduced energy consumption and a compact structure. It specifically addresses problems such as insufficient gas-liquid mixing and difficulty in controlling gas pressure and liquid flow rate in on-site electrochemical hydrogen peroxide synthesis generators. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1-Liquid tank, 2-Liquid circulation pipeline, 3-Liquid circulation pump, 4-Opening regulating valve, 5-Liquid circulation pipeline tee, 6-Liquid pipeline pressure transmitter, 7-Liquid proportional regulating valve, 8-Liquid flow transmitter, 9-Liquid check valve, 10-Gas quick-connect fitting, 11-Inlet hand valve, 12-Low-pressure pipeline pressure transmitter, 13-Gas low-pressure tank, 14-Gas circulation pipeline, 15-Gas compressor, 16-Gas high-pressure tank, 17-Gas pressure transmitter, 18-Gas proportional regulating valve, 19-Gas reflux tee, 20-Gas flow meter, 21-Gas check valve, 22-Gas-liquid mixer, 23-Gas-liquid mixture pressure transmitter, 24-Gas-liquid mixture flow meter, 25-Gas-liquid mixture hand valve. Detailed Implementation

[0015] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0017] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0018] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0020] See Figure 1This embodiment discloses a gas-liquid two-phase flow flow balance control and pressure compensation device, including: a gas pressure control system, a liquid flow control system, and a gas-liquid mixing system; the gas pressure control system, the liquid flow control system, and the gas-liquid mixing system are connected by pipelines; The gas pressure control system includes a low-pressure gas tank 13 and a high-pressure gas tank 16. The low-pressure gas tank 13 and the high-pressure gas tank 16 are connected to the gas-liquid mixing system through a gas return tee 19. A gas flow meter 20 and a gas check valve 21 are installed on the pipeline between the gas return tee 19 and the gas-liquid mixing system. The liquid flow control system includes a liquid tank 1, a liquid circulation pipeline 2, a liquid circulation pump 3, a liquid circulation pipeline tee 5, a liquid proportional regulating valve 7, and a liquid flow transmitter 8; the circulation outlet of the liquid tank 1 is connected to the circulation inlet of the liquid tank 1 through the liquid circulation pipeline 2 and the liquid circulation pipeline tee 5; the liquid proportional regulating valve 7, the liquid flow transmitter 8, and the liquid check valve 9 are installed on the pipeline connecting the liquid circulation pipeline tee 5 and the gas-liquid mixing system.

[0021] In a further optimized technical solution, the low-pressure gas tank 13 is connected to a gas return tee 19 via a gas circulation pipeline 14, and a gas proportional regulating valve 18 is installed on the gas circulation pipeline 14. When the gas flow rate fluctuates, the gas flow meter 20 can be adjusted by the gas proportional regulating valve 18 and pressure compensation can be provided to stabilize the gas flow rate.

[0022] Furthermore, the low-pressure gas tank 13 is connected to a quick-connect gas connector 10 and an air inlet manual valve 11.

[0023] To further optimize the technical solution, the gas pressure control system also includes a gas compressor 15, which is connected to both a low-pressure gas tank 13 and a high-pressure gas tank 16. The low-pressure gas tank 13 supplies gas to the high-pressure gas tank 16 via the gas compressor 15.

[0024] To further optimize the technical solution, a gas pressure transmitter 17 is connected to the gas high-pressure tank 16.

[0025] The liquid flow control system also includes an opening regulating valve 4 and a liquid pipeline pressure transmitter 6; the opening regulating valve 4 is located near the circulation inlet of the liquid circulation pipeline 2, and the liquid pipeline pressure transmitter 6 is also installed on the pipeline connecting the liquid circulation pipeline tee 5 and the gas-liquid mixing system.

[0026] The liquid flow transmitter 8 can be adjusted by the liquid proportional control valve 7 to stabilize the flow at the required value when the flow fluctuations become large or small. If the liquid proportional control valve 7 cannot be adjusted well, it can be further adjusted by the opening control valve 4 and pressure compensation can be given to the liquid circulation pipeline tee 5 to stabilize the flow. The liquid pipeline pressure transmitter 6 is used to monitor the pipeline pressure in real time.

[0027] The low-pressure pipe pressure transmitter 12 and the gas pressure transmitter 17 monitor the pressure of the low-pressure gas tank 13 and the high-pressure gas tank 16 in real time. When the reading displayed by the gas pressure transmitter 17 exceeds the set value, the gas proportional regulating valve 18 can be opened to allow the gas to return to the low-pressure gas tank 13, thereby realizing gas recycling.

[0028] The gas-liquid mixing system includes a gas-liquid mixing pipeline, a gas-liquid mixer 22, a gas-liquid mixture pressure transmitter 23, a gas-liquid mixture flow meter 24, and a gas-liquid mixture manual valve 25. The gas-liquid mixing pipeline is sequentially equipped with the gas-liquid mixer 22, the gas-liquid mixture pressure transmitter 23, the gas-liquid mixture flow meter 24, and the gas-liquid mixture manual valve 25. The gas-liquid mixture flow meter 24 monitors the mixture flow rate in real time; the gas-liquid mixture pressure transmitter 23 monitors the pressure in the mixing pipeline in real time and adjusts it accordingly.

[0029] This invention features a simplified gas-liquid gathering and transportation process, reduced energy consumption, and a compact structure. It enables segmented real-time monitoring of gas-liquid two-phase flow and dynamically adjusts the gas pressure and liquid flow rate based on flow rate changes. This effectively solves problems such as insufficient gas-liquid mixing and difficulty in controlling gas pressure and liquid flow rate in on-site electrochemical hydrogen peroxide synthesis generators.

[0030] The working process of this utility model is as follows: Step 1: Close the opening regulating valve 4 and the gas proportional regulating valve 18, and open the liquid circulation pump 3, the liquid pipeline pressure transmitter 6, the liquid proportional regulating valve 7, the liquid flow transmitter 8, the low pressure pipeline pressure transmitter 12, the gas pressure transmitter 17, the gas flow meter 20, and the gas-liquid mixture pressure transmitter 23. Step 2: When the liquid flow transmitter 8 exceeds the set range of 0-10 m³ / h, the opening regulating valve 4 will automatically open, allowing some of the liquid to flow back to the liquid tank 1 through the liquid circulation pipeline tee 5, thus stabilizing the liquid flow. At the same time, when the pressure of the liquid pipeline pressure transmitter 6 exceeds 0.6 MPa, the opening regulating valve 4 will also automatically open, thereby adjusting the pipeline pressure. Step 3: When the gas flow meter 20 exceeds the set range of 0-10 Nm³ / h, the gas proportional regulating valve 18 will automatically open, allowing some gas to flow back into the low-pressure gas tank 13. Once the gas flow value stabilizes, the gas proportional regulating valve 18 will automatically close. At the same time, when the pressure of the gas pressure transmitter 17 exceeds 0.6 MPa, the gas proportional regulating valve 18 will also automatically open, allowing gas to flow back into the low-pressure gas tank 13. Simultaneously, when the pressure of the low-pressure pipe pressure transmitter 12 exceeds 0.6 MPa, the external oxygen generator connected through the gas quick-connect fitting 10 will stop working. Step 4: The gas-liquid mixture flow meter 24 and the gas-liquid mixture pressure transmitter 23 are both monitored in real time within a certain flow range of 0-20 Nm³ / h and a pressure range of 0-0.6 MPa. When the set maximum value is exceeded, adjustments will be made through steps 2 and 3 to stabilize it.

[0031] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A gas-liquid two-phase flow balance control and pressure compensation device, characterized by, include: The system includes a gas pressure control system, a liquid flow control system, and a gas-liquid mixing system; the gas pressure control system, the liquid flow control system, and the gas-liquid mixing system are connected by pipelines. The gas pressure control system includes a low-pressure gas tank (13) and a high-pressure gas tank (16). The low-pressure gas tank (13), the high-pressure gas tank (16) and the gas-liquid mixing system are connected by a gas return tee (19). A gas flow meter (20) and a gas check valve (21) are installed on the pipeline between the gas return tee (19) and the gas-liquid mixing system. The liquid flow control system includes a liquid tank (1), a liquid circulation pipeline (2), a liquid circulation pump (3), a liquid circulation pipeline tee (5), a liquid proportional regulating valve (7), and a liquid flow transmitter (8); the circulation outlet of the liquid tank (1) is connected to the circulation inlet of the liquid tank (1) through the liquid circulation pipeline (2) and the liquid circulation pipeline tee (5); the liquid circulation pipeline tee (5) is connected to the gas-liquid mixing system by a liquid proportional regulating valve (7), a liquid flow transmitter (8), and a liquid check valve (9).

2. The gas-liquid two-phase flow balance control and pressure compensation device according to claim 1, characterized in that, The low-pressure gas tank (13) is connected to the gas return tee (19) through the gas circulation pipeline (14), and the gas circulation pipeline (14) is equipped with a gas proportion regulating valve (18).

3. A gas-liquid two-phase flow balance control and pressure compensation device according to claim 2, wherein, The low-pressure gas tank (13) is connected to a quick-connect gas connector (10) and an air inlet valve (11).

4. The gas-liquid two-phase flow balance control and pressure compensation device according to claim 3, characterized in that, The gas pressure control system also includes a gas compressor (15), which is connected to a low-pressure gas tank (13) and a high-pressure gas tank (16) respectively.

5. A gas-liquid two-phase flow balance control and pressure compensation device according to claim 4, wherein, A gas pressure transmitter (17) is connected to the gas high-pressure tank (16).

6. The gas-liquid two-phase flow balance control and pressure compensation device according to claim 1, wherein, The liquid flow control system also includes an opening regulating valve (4) and a liquid pipeline pressure transmitter (6); the opening regulating valve (4) is located near the circulation inlet of the liquid circulation pipeline (2), and the liquid pipeline pressure transmitter (6) is also installed on the pipeline connecting the liquid circulation pipeline tee (5) and the gas-liquid mixing system.

7. The gas-liquid two-phase flow balance control and pressure compensation device according to claim 1, wherein, The gas-liquid mixing system includes a gas-liquid mixing pipeline, a gas-liquid mixer (22), a gas-liquid mixture pressure transmitter (23), a gas-liquid mixture flow meter (24), and a gas-liquid mixture hand valve (25); the gas-liquid mixing pipeline is sequentially equipped with a gas-liquid mixer (22), a gas-liquid mixture pressure transmitter (23), a gas-liquid mixture flow meter (24), and a gas-liquid mixture hand valve (25).

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