Gas-liquid separation device and gas-liquid separation system

Abstract

The invention relates to the technical field of gas-liquid separation, in particular to a gas-liquid separation device and a gas-liquid separation system. A gas-liquid separation device comprises a device body, a gas-liquid separation structure and a throttling and pressure limiting structure. The device body is provided with a through flow channel as well as an inlet, an outlet and a discharge port which are communicated with the flow channel, the inlet is used for introducing a gas-liquid mixture, the outlet is used for discharging liquid, and the discharge port is used for discharging gas; the gas-liquid separation structure is connected to the device body and arranged in the flow channel, and the gas-liquid separation structure is used for separating gas and liquid in the gas-liquid mixture; the throttling and pressure limiting structure is connected to the device body and arranged in the flow channel, and the throttling and pressure limiting structure is used for guiding gas to be exhausted from the exhaust port. Impurity gas is effectively prevented from being attached to the surfaces of the heat exchange tubes in the evaporation process, and it is guaranteed that mutual heat transfer between heat exchange media is not affected. Due to the fact that the impurity gas is separated and discharged in time, adverse effects on the quality of water and gas produced by the system are avoided, and the quality of water and gas produced by the whole system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas-liquid separation, and in particular to a gas-liquid separation device and a gas-liquid separation system. Background Art

[0002] Non-condensable gases are mainly impurity gases entrained in the liquid. These impurity gases are easy to adhere to the surface of the heat exchange tubes during the evaporation process, affecting the mutual heat transfer between the heat exchange media. If they are not separated in time at the end of water production and gas production, the quality of the system's product water and gas will be affected. Summary of the invention

[0003] Based on this, it is necessary to provide a gas-liquid separation device and a gas-liquid separation system for the problem that non-condensable gases are mainly impurity gases entrained in liquids. This part of impurity gases is easy to adhere to the surface of the heat exchange tubes during the evaporation process, affecting the mutual heat transfer between the heat exchange media. If the separation is not timely at the end of water production and gas production, it will affect the quality of the system's product water and gas production.

[0004] In a first aspect, a gas-liquid separation device comprises:

[0005] The device body is provided with a through flow channel and an inlet, an outlet and a discharge port connected to the flow channel, the inlet is used to introduce a gas-liquid mixture, the outlet is used to discharge liquid, and the discharge port is used to discharge gas;

[0006] a gas-liquid separation structure, the gas-liquid separation structure being connected to the device body and disposed in the flow channel, the gas-liquid separation structure being used to separate gas and liquid in the gas-liquid mixture; and

[0007] A throttling and pressure-limiting structure is connected to the device body and is disposed in the flow channel, and is used to guide the gas to be discharged from the discharge port.

[0008] In one embodiment, the gas-liquid separation structure is sealed in the flow channel, and the gas-liquid separation structure is provided with separation holes penetrating along the flow direction of the gas-liquid mixture.

[0009] In one embodiment, the radial size of the separation hole gradually increases along the flow direction of the gas-liquid mixture.

[0010] In one of the embodiments, the throttling and pressure-limiting structure is sealed in the flow channel, and the throttling and pressure-limiting structure is inclined relative to the outlet along the flow direction of the gas-liquid mixture toward the discharge port.

[0011] In one of the embodiments, a water outlet hole is provided on a side of the throttling and pressure limiting structure away from the discharge port along the flow direction of the gas-liquid mixture.

[0012] In one embodiment, the device body includes a first pipe and a second pipe, the first pipe has the inlet and the outlet at both ends along its length direction, the first pipe is provided with a first opening, the first opening is located between the inlet and the outlet, the second pipe has the discharge port at one end along its length direction, and is provided with a second opening at the other end, the second opening is connected with the first opening so that the first pipe and the second pipe are configured to form the flow channel, the gas-liquid separation structure and the throttling pressure limiting structure are both arranged in the first pipe, the gas-liquid separation structure is arranged on one side edge of the first opening close to the inlet, and the throttling pressure limiting structure is arranged on one side edge of the first opening close to the outlet.

[0013] In one embodiment, a portion of the second pipe near the second opening has the same diameter as that of the first pipe.

[0014] In one embodiment, the gas-liquid separation device further comprises a one-way valve, wherein the one-way valve is disposed on the second pipeline and is located between the second opening and the discharge port.

[0015] In one of the embodiments, the gas-liquid separation device further comprises a needle valve, wherein the needle valve is disposed on the second pipeline and is located between the one-way valve and the discharge port.

[0016] In a second aspect, a gas-liquid separation system is provided, comprising the gas-liquid separation device as described in the first aspect.

[0017] In the above-mentioned gas-liquid separation device, the gas-liquid separation structure is arranged in the flow channel of the device body, and is used to separate the gas and liquid in the gas-liquid mixture. For the impurity gas entrained in the liquid, the structure can separate the impurity gas from the liquid after the gas-liquid mixture enters the device body. In this way, the impurity gas is prevented from flowing in the system with the liquid, thereby reducing the possibility of the impurity gas reaching the surface of the heat exchange tube. The gas-liquid separation structure can improve the efficiency of gas-liquid separation, so that the gas and liquid are effectively separated before entering the subsequent process. Compared with the system without a special gas-liquid separation structure, the impurity gas can be removed from the liquid more timely, and a large amount of impurity gas can be prevented from entering the relevant process such as evaporation of the heat exchange tube. The throttling and pressure limiting structure is located in the flow channel, which is used to guide the gas to be discharged from the discharge port. In the gas-liquid separation process, the separated gas needs to have a suitable channel discharge device. The throttling and pressure limiting structure ensures that the gas can be discharged along the predetermined path, that is, through the discharge port. In this process, it ensures that the pressure in the device is in a suitable state through the effects of throttling and pressure limiting. This helps to stabilize the gas-liquid separation process and makes the separation of gas and liquid more thorough. A suitable pressure environment can prevent abnormal accumulation or backflow of gas in the device, further improving the separation effect. After the gas-liquid mixture is introduced into the inlet, the gas-liquid separation structure and the throttling pressure limiting structure work together in the device body, and the liquid passes out from the outlet after gas-liquid separation. At this time, the impurity gas in the liquid has been removed in large quantities, and the separated impurity gas is discharged from the discharge port under the guidance of the throttling pressure limiting structure, so that the liquid and gas are effectively treated in the device. This design can effectively prevent the impurity gas from adhering to the surface of the heat exchange tube during the evaporation process, ensuring that the mutual heat transfer between the heat exchange media is not affected. Moreover, at the end of water production and gas production, since the impurity gas has been separated and discharged in time in the gas-liquid separation device, the adverse effects on the quality of the system product water and gas production are avoided, and the quality of the water and gas produced by the entire system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application, and ordinary technicians in this field can obtain other drawings based on the disclosed drawings without paying any creative work.

[0019] FIG1 is a three-dimensional schematic diagram of a gas-liquid separation device provided in an embodiment of the present application from a first viewing angle.

[0020] FIG2 is a three-dimensional schematic diagram of a gas-liquid separation device provided in an embodiment of the present application from a second viewing angle.

[0021] FIG3 is a three-dimensional schematic diagram of a gas-liquid separation device provided in an embodiment of the present application from a third viewing angle.

[0022] FIG4 is a cross-sectional view of a gas-liquid separation device provided in an embodiment of the present application.

[0023] FIG5 is a schematic structural diagram of a gas-liquid separation structure of a gas-liquid separation device provided in an embodiment of the present application.

[0024] FIG6 is a schematic structural diagram of a throttling and pressure-limiting structure of a gas-liquid separation device provided in an embodiment of the present application.

[0025] Explanation of the accompanying drawings: 100, gas-liquid separation device; 1, device body; 11, first pipeline; 111, inlet; 112, outlet; 113, first opening; 12, second pipeline; 121, discharge port; 122, second opening; 123, first section; 1231, first part; 1232, second part; 124, second section; 2, gas-liquid separation structure; 21, separation hole; 3, throttling pressure limiting structure; 31, water outlet; 4, one-way valve; 5, needle valve. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] Referring to FIGS. 1 to 3 , the embodiment of the present application provides a gas-liquid separation device 100, including a device body 1, a gas-liquid separation structure 2 (see FIG. 2 ) and a throttling pressure limiting structure 3 (see FIG. 3 ). The device body 1 is provided with a through flow channel and an inlet 111 (see FIG. 2 ), an outlet 112 (see FIG. 3 ) and a discharge port 121 connected to the flow channel. The inlet 111 is used to pass a gas-liquid mixture, the outlet 112 is used to pass liquid, and the discharge port 121 is used to discharge gas; the gas-liquid separation structure 2 is connected to the device body 1 and arranged in the flow channel, and the gas-liquid separation structure 2 is used to separate gas and liquid in the gas-liquid mixture; the throttling pressure limiting structure 3 is connected to the device body 1 and arranged in the flow channel, and the throttling pressure limiting structure 3 is used to guide gas to be discharged from the discharge port 121. The gas-liquid separation structure 2 is arranged in the flow channel of the device body 1, and is used to separate gas and liquid in the gas-liquid mixture. For impurity gas entrained in the liquid, the structure can separate the impurity gas from the liquid after the gas-liquid mixture enters the device body 1 . This prevents the impurity gas from flowing with the liquid in the system, thereby reducing the possibility of the impurity gas reaching the surface of the heat exchange tube. The gas-liquid separation structure 2 can improve the efficiency of gas-liquid separation, so that the gas and liquid can be effectively separated before entering the subsequent process. Compared with a system without a special gas-liquid separation structure 2, the impurity gas can be removed from the liquid more promptly to prevent a large amount of impurity gas from entering related processes such as evaporation of the heat exchange tube. The throttling and pressure-limiting structure 3 is located in the flow channel, which is used to guide the gas to be discharged from the discharge port 121. During the gas-liquid separation process, the separated gas needs to have a suitable channel discharge device. The throttling and pressure-limiting structure 3 ensures that the gas can be discharged along a predetermined path, that is, through the discharge port 121. In this process, it ensures that the pressure in the device is in a suitable state through the effects of throttling and pressure limiting. This helps to stabilize the gas-liquid separation process and make the separation of gas and liquid more thorough. A suitable pressure environment can prevent abnormal accumulation or backflow of gas in the device, further improving the separation effect. After the gas-liquid mixture is introduced into the inlet 111, the gas-liquid separation structure 2 and the throttling pressure limiting structure 3 in the device body 1 work together, and the liquid is discharged from the outlet 112 after gas-liquid separation. At this time, the impurity gas in the liquid has been largely removed, and the separated impurity gas is discharged from the discharge port 121 under the guidance of the throttling pressure limiting structure 3, so that the liquid and gas are effectively processed in the device. This design can effectively prevent the impurity gas from adhering to the surface of the heat exchange tube during the evaporation process, ensuring that the mutual heat transfer between the heat exchange media is not affected. Moreover, at the end of water production and gas production, since the impurity gas has been separated and discharged in time in the gas-liquid separation device 100, the adverse effects on the quality of the system product water and gas production are avoided, and the quality of the water and gas produced by the entire system is improved.

[0028] It should be noted that the gas-liquid separation device 100 of the present application is mainly used for separation of high-temperature water or high-temperature steam condensed water and non-condensable gas.

[0029] Please refer to FIG4 . In some embodiments, the gas-liquid separation structure 2 is sealed in the flow channel, and the gas-liquid separation structure 2 is penetrated with a separation hole 21 along the flow direction of the gas-liquid mixture (direction A as shown in FIG4 ). The separation hole 21 can disturb the high-temperature and high-pressure liquid, destroy the dissolution equilibrium of the non-condensable gas in the liquid, and effectively ensure the effective release of the gas entrained in the liquid.

[0030] In an optional embodiment, the number of the separation holes 21 includes a plurality, and the plurality of separation holes 21 are arranged at intervals in the gas-liquid separation structure 2 .

[0031] Please refer to FIG. 4 and FIG. 5. In some embodiments, the radial dimension of the separation hole 21 gradually increases along the flow direction of the gas-liquid mixture (direction A as shown in FIG. 4). The gas-liquid separation structure 2 can be made similar to the structure of a liquid nozzle. When the gas-liquid mixture passes through the separation hole 21, the flow rate will gradually increase, and the acceleration effect makes it easier for the gas in the gas-liquid mixture to be released. As the radial dimension of the separation hole 21 increases, the pressure of the liquid will gradually decrease. When the pressure decreases, the solubility of the gas in the liquid will also decrease, which makes it easier for the gas dissolved in the liquid to escape. When the gas-liquid mixture gradually passes through the opening on the other side with a gradually increasing radial dimension from the smaller side opening of the separation hole 21, the liquid will be dispersed into finer droplets, and there will be more detachment interfaces between the gas and the liquid, which can further promote the separation of the gas from the liquid. The gradually increasing separation hole 21 can achieve more efficient gas-liquid separation in a limited space. The structure of the separation hole 21 can make the gas-liquid separation device 100 more compact, while making full use of the flow characteristics of the liquid to achieve effective separation of the gas, thereby improving the processing capacity of gas-liquid separation without increasing the volume of the device.

[0032] Please refer to Figure 4. In some embodiments, the throttling pressure-limiting structure 3 is sealed in the flow channel, and the throttling pressure-limiting structure 3 is inclined relative to the outlet 112 along the flow direction of the gas-liquid mixture (direction A as shown in Figure 4) toward the direction of the discharge port 121. The throttling pressure-limiting structure 3 provides back pressure resistance for liquid flow, and better blocks the return of gas behind the gas-liquid separation plate. The gas density is low, and the gas in the gas-liquid mixture overflows upward under pressure. At the same time, the throttling pressure-limiting structure 3 is installed at an angle, and the throttling pressure-limiting structure 3 coincides with the flow surface of the gas discharge chamber of the device body 1, so that the non-condensable gas is discharged upward along the inclined surface. In addition, the throttling pressure-limiting structure 3 can also optimize the liquid flow path. Since the throttling pressure-limiting structure 3 is inclined relative to the outlet 112 along the flow direction of the gas-liquid mixture toward the direction of the discharge port 121, it can guide the separated liquid to flow along a specific path. After the separated liquid passes through the gas-liquid separation structure 2, it will be guided by the throttling pressure limiting structure 3, so that the liquid flows to the outlet 112 more smoothly, reducing the turbulent flow of the liquid in the device and reducing the possibility of the liquid re-entraining the gas. To enhance the flexibility of pressure control, the inclined throttling pressure limiting structure 3 provides a more flexible pressure control method. It can accurately control the size of the back pressure resistance by adjusting its own inclination angle according to the flow rate, pressure and other parameters of the gas-liquid mixture. For example, when the flow rate of the gas-liquid mixture is large, the inclination angle can be appropriately increased to increase the back pressure resistance to ensure the effect of gas-liquid separation; and when the flow rate is small, the inclination angle is appropriately reduced so that the liquid can pass smoothly while still ensuring effective blocking of the gas. This flexible pressure control helps to adapt to the gas-liquid separation requirements under different working conditions. Reduce the interference of liquid on gas discharge, and the inclined structure makes the flow paths of liquid and gas more separated in space. The separated liquid mainly flows to the outlet 112 along the bottom of the inclined throttling pressure limiting structure 3, while the gas is discharged upward along the inclined surface. This can effectively reduce the interference of liquid on gas discharge during the discharge process. If the throttling and pressure-limiting structure 3 is installed perpendicular to the flow channel, the liquid may more easily splash onto the path of gas discharge, resulting in poor gas discharge or re-mixing into the liquid. The inclined structure can better avoid this situation and ensure that the gas can be discharged efficiently and purely from the discharge port 121. Improve the self-cleaning ability of the device. After the device has been running for a period of time, some impurities may be deposited in the flow channel. The inclined throttling and pressure-limiting structure 3 is conducive to these impurities flowing to the outlet 112 along with the liquid. Because the liquid has a certain flushing effect under the guidance of the inclined structure, it can carry away the impurities deposited in the device, thereby reducing the possibility of impurity accumulation in the device. This is like in an inclined sink, the water flow can carry away the dirt, which improves the self-cleaning ability of the device and extends the service life of the device.

[0033] Please refer to Figures 4 and 6. In some embodiments, a water outlet 31 is provided on one side of the throttling and pressure limiting structure 3 away from the discharge port 121 along the flow direction of the gas-liquid mixture. The water outlet 31 is provided to facilitate the discharge of the separated liquid when the gas-liquid separation device 100 is installed horizontally. The gas separated by the gas-liquid separation structure 2 is discharged after being guided by the throttling and pressure limiting structure 3, and the separated liquid is discharged from the outlet 112 through the water outlet. The liquid discharge efficiency is improved, and the existence of the water outlet 31 provides a special discharge channel for the liquid. After the gas-liquid separation, the liquid can flow directly to the outlet 112 through the water outlet 31, avoiding the liquid from flowing in the device in a circuitous manner or interfering with the gas discharge path. It helps to improve the working efficiency of the entire gas-liquid separation device 100, especially when processing a large amount of gas-liquid mixture, the separated liquid can be discharged in time to ensure the continuous and stable operation of the device. Prevent liquid reflux and remixing. When the liquid has a special water outlet 31 discharge channel, it can effectively prevent the liquid from refluxing to the gas-liquid separation area or remixing with the discharged gas. Without the water outlet 31, the liquid may flow back due to the pressure change inside the device, the inertia of the liquid flow, etc. With the water outlet 31, the liquid will be continuously and stably discharged toward the outlet 112 under the action of the pressure difference, which greatly reduces the risk of liquid backflow and remixing, thereby ensuring the effect of gas-liquid separation.

[0034] Please refer to Figures 4 and 6. In an optional embodiment, there is one water outlet 31, which is opened on the edge of the throttling and pressure limiting structure 3 away from the discharge port 121. Optimize the liquid flow path. When the water outlet 31 is opened on the edge of the throttling and pressure limiting structure 3 away from the discharge port 121, the liquid can flow naturally along the edge to the water outlet 31 after flowing through the throttling and pressure limiting structure 3. This layout conforms to the flow characteristics of the liquid and makes the flow path of the liquid smoother. Just like setting a drain at the edge of the bank by the river, the water flow can naturally converge to the drain, reducing the energy loss and turbulent flow of the liquid inside the device. This helps to improve the efficiency of liquid discharge and can reduce the interference of the liquid with other structures inside the device. Improve the quality of gas discharge. Since the water outlet 31 is located at the edge, the liquid is mainly discharged from this edge position, so that the space for gas discharge is relatively concentrated in the middle part of the device. This can reduce the impact of the liquid on the gas discharge path and avoid liquid splashing or entrained gas re-mixing into the gas discharge channel. The gas can be discharged from the discharge port 121 more purely, thereby improving the quality of gas discharge and further ensuring the effective separation and treatment of the non-condensable gas by the gas-liquid separation device 100.

[0035] Please refer to Figure 4. In some embodiments, the device body 1 includes a first pipe 11 and a second pipe 12. The first pipe 11 has an inlet 111 and an outlet 112 at both ends along its length direction, respectively. The first pipe 11 is provided with a first opening 113, and the first opening 113 is located between the inlet 111 and the outlet 112. The second pipe 12 has a discharge port 121 at one end along its length direction, and a second opening 122 at the other end. The second opening 122 is connected to the first opening 113 so that the first pipe 11 and the second pipe 12 are configured to form a flow channel. The gas-liquid separation structure 2 and the throttling pressure limiting structure 3 are both arranged in the first pipe 11. The gas-liquid separation structure 2 is arranged on one side edge of the first opening 113 close to the inlet 111, and the throttling pressure limiting structure 3 is arranged on one side edge of the first opening 113 close to the outlet 112. Guide the gas to converge and discharge: The first opening 113 is a key part connecting the first pipe 11 and the second pipe 12. The gas separated by the gas-liquid separation structure 2 near its inlet 111 can be more conveniently gathered at the first opening 113 under the blocking and guidance of the throttling and pressure-limiting structure 3, and then discharged through the discharge port 121 of the second pipe 12. Reduce gas interference with liquid flow: Since the gas can be guided and discharged in a timely and efficient manner, the liquid is less disturbed by the gas in the process of flowing to the outlet 112. In some gas-liquid mixed systems, if the gas cannot be separated and discharged well, it may cause unstable liquid flow, fluctuations, vortices and other phenomena. This structural setting can effectively avoid these problems and ensure that the liquid flows smoothly to the outlet 112. Stabilize the liquid flow rate and pressure: The throttling and pressure-limiting structure 3 is set at the edge of the first opening 113 near the outlet 112, which can effectively throttle and limit the pressure of the liquid after gas-liquid separation. By reasonably controlling the flow rate and pressure of the liquid, the liquid can flow out of the outlet 112 in a stable state. Working in coordination with the gas-liquid separation structure 2: The throttling pressure-limiting structure 3 and the gas-liquid separation structure 2 are arranged relatively close to each other in the first pipe 11, and a good synergistic effect can be formed between them. Convenient installation: The gas-liquid separation structure 2 and the throttling pressure-limiting structure 3 are located on both sides of the edge of the first opening 113, and such a position is convenient during installation. They can be fixed inside the first pipe 11 by simple welding, flange connection or other connection methods, and during the installation process, technicians can easily position and debug them.

[0036] Please refer to FIG. 4 . In some embodiments, the diameter d2 of the portion of the second pipe 12 near the second opening 122 is the same as the diameter d1 of the first pipe 11 . The same diameter pipeline is used to effectively ensure that the gas enters the second pipe 12 smoothly and reduce the residual gas in the first pipe 11 . To ensure the continuity of gas flow, when the second pipe 12 has the same diameter as the first pipe 11, the cross-sectional area of ​​the flow channel does not change suddenly during the process of the gas entering the second pipe 12 from the first pipe 11 through the first opening 113 . In the case of unchanged pipe diameter, the gas can maintain a relatively stable flow rate and flow state. The gas can smoothly enter the second pipe 12 from the first pipe 11 without flow obstruction due to the resistance caused by the change in pipe diameter, thereby effectively reducing the residual gas in the first pipe 11 . Reduce pressure loss and energy loss. The same pipe diameter can reduce the pressure loss of gas during transmission. In a pipeline system, changes in pipe diameter can lead to the generation of local resistance, which in turn causes a pressure drop. If the diameter of the second pipeline 12 is smaller than that of the first pipeline 11, the gas will have a large pressure loss when entering the second pipeline 12 due to the narrowing of the channel; on the contrary, if the diameter becomes larger, gas diffusion will cause energy loss. The same diameter avoids these situations, so that the gas can pass smoothly with less pressure loss and energy loss in the process of entering the second pipeline 12 from the first pipeline 11, thereby ensuring the efficiency of gas discharge. Simplifying the device design and manufacturing process, it is more convenient to use pipelines with the same diameter when designing and manufacturing the gas-liquid separation device 100. From a design perspective, there is no need to consider the complex fluid mechanics calculations and structural design adjustments caused by changes in the diameter. For the manufacturing process, pipelines with the same diameter are simpler in the processing and assembly process. For example, in the process of pipeline connection, pipe fittings and connection methods of the same specifications can be used, which reduces the connection mismatch or sealing problems that may be caused by differences in pipe diameters, and improves the manufacturing efficiency and quality of the device.

[0037] Please refer to FIG. 4. In some embodiments, the gas-liquid separation device 100 further includes a one-way valve 4, which is disposed on the second pipe 12 and is located between the second opening 122 and the discharge port 121. The one-way valve 4 is provided to effectively ensure that the system is airtight and clean. To prevent gas reflux, the one-way valve 4 allows the gas to flow freely in the direction from the first pipe 11 to the discharge port 121 through the second pipe 12, but prevents the gas from flowing in the opposite direction. In the gas-liquid separation device 100, when the internal pressure fluctuates or external factors cause the gas to have a reverse flow trend, the one-way valve 4 can play its blocking role. For example, in some complex industrial production processes, the pressure of the entire system may fluctuate due to the start-stop or operation changes of other equipment. At this time, if there is no one-way valve 4, the gas that has been discharged to the area near the discharge port 121 of the second pipe 12 may flow back to the first pipe 11 and re-mix into the gas-liquid mixture, affecting the effect of gas-liquid separation. To stabilize the system pressure, the one-way valve 4 can help stabilize the pressure distribution in the gas-liquid separation device 100 by limiting the flow direction of the gas. When the gas-liquid separation device 100 works normally, the gas enters the second pipe 12 from the first pipe 11 and is discharged, and the pressure in the system is in a dynamic equilibrium state. If there is no one-way valve 4, once gas backflow occurs, the pressure in certain areas of the system will suddenly increase or decrease. This pressure instability may affect the efficiency of gas-liquid separation and even damage the entire device. The one-way valve 4 can effectively maintain the pressure stability of the system, so that the gas-liquid separation process can be carried out under a relatively stable pressure environment. To protect downstream equipment, if other downstream equipment is connected to the discharge port 121, the one-way valve 4 can play a protective role. It can prevent gas or impurities that may flow back from the downstream of the discharge port 121 from entering the gas-liquid separation device 100, thereby affecting the normal operation of the device. For example, the downstream device may be a gas storage device, and the gas storage device may have gas backflow due to pressure changes or operational errors. The one-way valve 4 can prevent these backflow gases from entering the gas-liquid separation device 100, avoiding damage to the internal structure and separation process of the gas-liquid separation device 100.

[0038] Please refer to FIG. 4 . In some embodiments, the gas-liquid separation device 100 further includes a needle valve 5 , which is disposed on the second pipe 12 and is located between the one-way valve 4 and the discharge port 121 . The needle valve 5 is provided to adjust the discharge amount of the gas-liquid separation device 100 and realize the real-time discharge of non-condensable gas during the operation of the system. The needle valve 5 can fine-tune the flow rate. The valve core of the needle valve 5 is needle-shaped, and the gap between the needle valve core and the valve seat is controlled by rotating the valve stem. This structure enables the needle valve 5 to make very fine adjustments to the gas flow rate. Compared with other valves, the needle valve 5 can achieve smaller flow rate change adjustments. For example, in some experimental devices or chemical production processes that require extremely high gas flow accuracy, by adjusting the needle valve 5, the discharge amount of non-condensable gas can be accurately controlled to ensure that the gas-liquid balance state in the system is maintained at an optimal level. In response to the demand for flow rate changes, during the operation of the gas-liquid separation device 100 , the amount of non-condensable gas generated may change due to various factors (such as temperature, pressure, liquid flow, etc.). The needle valve 5 can flexibly adjust the gas discharge amount according to these changes. When the amount of non-condensable gas generated increases, the discharge amount can be increased by appropriately opening the needle valve 5; conversely, when the amount generated decreases, the needle valve 5 can be closed. This flexibility enables the gas-liquid separation device 100 to adapt to different working conditions, ensuring that the device can effectively perform gas-liquid separation under various working conditions. In the gas-liquid separation device 100, the needle valve 5 can work in conjunction with other components such as the one-way valve 4 to jointly maintain the pressure stability of the system. The one-way valve 4 prevents gas backflow, and the needle valve 5 can adjust the gas discharge amount according to the actual pressure conditions of the system, so that the pressure in the system is always maintained within a reasonable range, ensuring the stability of the gas-liquid separation process, and at the same time, it is also beneficial to protect the equipment safety of the entire system.

[0039] Please refer to FIG. 4 . In an optional embodiment, the second pipe 12 includes a first section 123 and a second section 124 that are connected. The first section 123 has a second opening 122, and the first section 123 is connected to the first pipe 11, and the second section 124 has a discharge port 121. The first section 123 includes a first portion 1231 and a second portion 1232 that are connected, and the second portion 1232 is disposed between the first portion 1231 and the second section 124. The diameter d2 of the first portion 1231 is the same as the diameter d1 of the first pipe 11, and the diameter of the second portion 1232 gradually decreases from the first portion 1231 to the second section 124 until it is the same as the diameter of the second section 124. The check valve and the needle valve 5 are both disposed on the second section 124. The guiding effect of the gradual change of the pipe diameter, the pipe diameter of the second part 1232 gradually decreases from the first part 1231 to the second section 124. This gradual change design can make the gas flow faster after flowing from the first pipe 11 into the second pipe 12, which helps the gas flow to the discharge port 121 more efficiently. At the same time, the gradually changing pipe diameter can avoid the violent disturbance and energy loss of the gas caused by the sudden change of the pipe diameter, making the gas flow more stable. Improve the gas discharge efficiency. The design of the first part 1231 of the first section 123 having the same pipe diameter as the first pipe 11 ensures that the gas smoothly transitions from the first pipe 11 to the second pipe 12. Then, through the second part 1232 with a gradual change in pipe diameter, the gas flow rate is accelerated, and finally discharged in the second section 124. The whole process is like designing an acceleration channel for the gas, which can effectively improve the gas discharge efficiency and enable the gas-liquid separation device 100 to discharge the separated gas faster. Concentrated pressure adjustment area, since the pipe diameter change is mainly concentrated in the second part 1232 of the first section 123, the pressure environment of the second section 124 is relatively easier to control. By setting the needle valve 5 in the second section 124, the pressure in this area can be effectively adjusted. When the pressure in the system needs to be increased or decreased, the needle valve 5 can be used to operate in this relatively independent pressure area without causing excessive interference to the gas-liquid separation process of the first pipeline 11 and the first part 1231 of the first section 123. Pressure distribution optimization, the design of this pipeline structure helps to optimize the pressure distribution in the gas-liquid separation device 100. The design of the gradual change of the pipe diameter of the first section 123 can share part of the pressure change and avoid the impact of sudden pressure change on the device. At the same time, the valve setting of the second section 124 can further adjust the pressure so that the entire device can maintain a relatively stable pressure state during operation, which is conducive to the long-term and stable operation of the gas-liquid separation device 100, and reduces problems such as equipment damage or poor separation effect caused by pressure fluctuations. Compact structure and coordinated work, the pipe diameter change and valve setting are reasonably distributed in different parts of the second pipeline 12, making the structure of the device more compact. The gradual change of the pipe diameter design of the first section 123 and the valve setting of the second section 124 can work together to achieve efficient gas discharge and stable operation of the system.

[0040] The working principle of the gas-liquid separation device 100 of the embodiment of the present application is as follows: Please refer to FIG. 4 , the high-temperature gas-liquid mixture enters the first pipe 11 along the A direction through the inlet 111, and after the gas-liquid mixture passes through the gas-liquid separation structure 2, the gas is effectively released under the disturbance of the separation hole 21, and the gas enters the second pipe 12 through the first opening 113 along the B direction, passes through the one-way valve 4 and the needle valve 5, and is discharged through the discharge port 121. After the separated liquid passes through the throttling and pressure-limiting structure 3 to remove gas, it is discharged from the water outlet 31 and then passes through the outlet 112.

[0041] To summarize, a gas-liquid separation system provided in an embodiment of the present application can simplify the structure of the gas-liquid separation device 100 and improve the installation versatility by setting a first pipeline 11 and a second pipeline 12, as well as setting a gas-liquid separation structure 2 and a throttling pressure limiting structure 3. It can continuously and smoothly discharge the non-condensable gas in the gas-liquid mixture, and at the same time ensure the gas pressure stability of the gas-liquid separation device 100, avoid the problem of poor negative pressure discharge, and reduce the problem of siphoning and inability to discharge of non-condensable gas branches due to the lack of back pressure valves or throttling orifice plates.

[0042] In the second aspect, the embodiment of the present application further provides a gas-liquid separation system, which includes the gas-liquid separation device 100 as in the first aspect. The gas-liquid separation system has all the technical effects of the gas-liquid separation device 100, which will not be repeated here. The gas-liquid separation device 100 can be installed horizontally or vertically, and the inlet 111 and the outlet 112 of the gas-liquid separation device 100 can be connected to other devices in the gas-liquid separation system through a quick-release chuck interface.

[0043] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A gas-liquid separation device, characterized in that: include: The device body is provided with a through flow channel and an inlet, an outlet and a discharge port connected to the flow channel, the inlet is used to introduce a gas-liquid mixture, the outlet is used to discharge liquid, and the discharge port is used to discharge gas; A gas-liquid separation structure, the gas-liquid separation structure is connected to the device body and is disposed in the flow channel, the gas-liquid separation structure is used to separate the gas and liquid in the gas-liquid mixture; as well as A throttling and pressure-limiting structure is connected to the device body and is disposed in the flow channel, and is used to guide the gas to be discharged from the discharge port.

2. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation structure is sealed in the flow channel, and a separation hole is penetrated through the gas-liquid separation structure along the flow direction of the gas-liquid mixture.

3. The gas-liquid separation device according to claim 2, characterized in that: The radial dimension of the separation hole gradually increases along the flow direction of the gas-liquid mixture.

4. The gas-liquid separation device according to claim 1, characterized in that: The throttling and pressure-limiting structure is sealed in the flow channel, and the throttling and pressure-limiting structure is inclined relative to the outlet along the flow direction of the gas-liquid mixture toward the discharge port.

5. The gas-liquid separation device according to claim 4, characterized in that: A water outlet hole is provided on one side of the throttling and pressure limiting structure away from the discharge port along the flow direction of the gas-liquid mixture.

6. The gas-liquid separation device according to claim 1, characterized in that: The device body includes a first pipe and a second pipe, the first pipe has the inlet and the outlet at both ends along its length direction respectively, the first pipe is provided with a first opening, the first opening is located between the inlet and the outlet, the second pipe has the discharge port at one end along its length direction, and a second opening is provided at the other end, the second opening is communicated with the first opening so that the first pipe and the second pipe are configured to form the flow channel, the gas-liquid separation structure and the throttling pressure limiting structure are both arranged in the first pipe, the gas-liquid separation structure is arranged on one side edge of the first opening close to the inlet, and the throttling pressure limiting structure is arranged on one side edge of the first opening close to the outlet.

7. The gas-liquid separation device according to claim 6, characterized in that: The diameter of the portion of the second pipeline close to the second opening is the same as that of the first pipeline.

8. The gas-liquid separation device according to claim 6, characterized in that: The gas-liquid separation device further comprises a one-way valve, which is arranged on the second pipeline and is located between the second opening and the discharge port.

9. The gas-liquid separation device according to claim 8, characterized in that: The gas-liquid separation device further comprises a needle valve, which is arranged on the second pipeline and is located between the one-way valve and the discharge port.

10. A gas-liquid separation system, characterized in that: The gas-liquid separation system comprises the gas-liquid separation device according to any one of claims 1 to 9.

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