Gas-liquid separation device

Abstract

The utility model relates to a gas-liquid separation device which comprises a first pipe body, a bottom pipe cap and a first baffle plate, the first pipe body is provided with a first port, a second port and a third port, the bottom pipe cap is arranged at the second port, and a liquid discharge hole is formed in the bottom pipe cap; the first baffle is arranged in the first pipe body and located below the first port, and the lower end of the first baffle exceeds the third port, or the lower end of the first baffle is flush with the lower end of the third port. The front end and the rear end of the first baffle are connected with the inner wall of the first pipe body. The first baffle comprises a plurality of blocking units which are sequentially connected in the vertical direction, each blocking unit comprises a first inclined plate and a second inclined plate, and an included angle is formed between each first inclined plate and the corresponding second inclined plate. According to the gas-liquid separation device provided by the utility model, the first baffle is arranged, so that steam is collided and steered for multiple times, the gas-liquid contact area is increased, the gas-liquid contact time is prolonged, condensate water drops are efficiently separated from the steam by utilizing inertia force, and the separation effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of gas-liquid separation, and specifically relates to a gas-liquid separation device. Background Technology

[0002] In industrial production, steam, as a commonly used energy medium, is widely applied in various processes. When desorbing activated carbon fibers in an activated carbon fiber adsorption chamber, the quality of the steam directly affects the desorption efficiency and the performance of the activated carbon fibers. The presence of condensate negatively impacts the heat transfer efficiency of the steam. More importantly, if condensate enters the activated carbon fiber adsorption chamber, it will cause the activated carbon fibers to become damp, damaging their internal structure, reducing their adsorption capacity, and increasing regeneration costs. Therefore, during the desorption process of activated carbon fibers by steam in the adsorption chamber, it is necessary to remove the condensate from the steam to ensure that the activated carbon fibers are not damaged.

[0003] The existing method for removing condensate from steam pipes involves drilling a hole at the bottom of the pipe and then draining it through a steam trap. Specifically, a drain hole is located at the bottom of the steam pipe, connected to a steam trap via a pipe. The steam trap automatically drains the condensate. This method works by relying on gravity at the bottom of the pipe to draw the condensate to the drain hole, where it is then discharged through the steam trap.

[0004] This structure is simple and low-cost, but it has significant drawbacks. First, it can only collect condensate flowing from the bottom of the pipe. Liquid droplets entrained in the steam, located in the upper-middle part of the steam flow, cannot effectively converge at the bottom of the pipe, causing these droplets to enter subsequent equipment with the steam. Second, it provides minimal disturbance to the steam flow, making it difficult to separate droplets from the steam, resulting in low condensate removal efficiency. Third, it cannot effectively separate the steam flow into liquid, allowing condensate to potentially enter the activated carbon fiber adsorption box, causing the activated carbon fibers to become damp, thus affecting their adsorption performance and lifespan, reducing desorption efficiency, and increasing production costs. Therefore, there is an urgent need for a structure that can efficiently intercept droplets in steam and effectively collect condensate. Utility Model Content

[0005] The purpose of this invention is to provide an improved gas-liquid separation device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas-liquid separation device, the device comprising:

[0008] The first tube has a first port, a second port, and a third port. The first port is used to connect with a steam conveying pipeline. The second port is located below the first port. The third port is located between the first port and the second port. The third port is used to connect with an activated carbon fiber adsorption box.

[0009] A bottom cap is provided at the second port. The bottom cap is recessed away from the first port. A drain hole is provided on the bottom cap. The drain hole is connected to a steam trap through a drain pipe.

[0010] A first baffle is disposed within the first tube and located below the first port. The first baffle extends downwards, with its lower end extending beyond or flush with the lower end of the third port. Both the front and rear ends of the first baffle are connected to the inner wall of the first tube. The first baffle includes multiple blocking units connected sequentially in a vertical direction. Each blocking unit includes a first inclined plate and a second inclined plate connected to the lower end of the first inclined plate, forming an angle between the first and second inclined plates.

[0011] According to some embodiments of this utility model, the first inclined plate extends upward from its lower end to its upper end toward the direction of the steam conveying pipe, and the second inclined plate forms a right angle or an acute angle with the first inclined plate.

[0012] According to some embodiments of the present invention, the device further includes a second baffle, which is located below the first baffle. The outer periphery of the second baffle is connected to the inner periphery of the first tube or the inner wall of the bottom cap. A liquid passage hole is provided on the second baffle, which communicates with the first tube and the bottom cap.

[0013] According to some embodiments of this utility model, the distance between the lower end of the first baffle and the lower end of the third port is greater than or equal to 20 mm; the distance between the first baffle and the second baffle is greater than or equal to 60 mm.

[0014] According to some embodiments of this utility model, the diameter of the third port is smaller than the diameters of the first port and the second port.

[0015] According to some embodiments of this utility model, the first port of the first pipe body is connected to the steam conveying pipeline through the second pipe body. The second pipe body has an upper port and a lower port that are connected to each other. The diameter of the upper port is smaller than the diameter of the lower port. The upper port and the lower port are not coaxially arranged. The upper port is used to connect with the steam conveying pipeline, and the lower port is connected with the first port of the first pipe body. The upper end of the first baffle extends into the second pipe body.

[0016] According to some embodiments of this utility model, the upper port of the second pipe is connected to the steam conveying pipeline through the third pipe.

[0017] Another technical solution adopted by this utility model is:

[0018] A gas-liquid separation device, the device comprising:

[0019] The first tube has a first port, a second port, and a third port. The first port is used to connect with a steam conveying pipeline. The second port is located below the first port. The third port is located between the first port and the second port. The third port is used to connect with an activated carbon fiber adsorption box.

[0020] A bottom cap is provided at the second port. The bottom cap is recessed away from the first port. A drain hole is provided on the bottom cap. The drain hole is connected to a steam trap through a drain pipe.

[0021] A first baffle is disposed within the first tube, with its front and rear ends connected to the inner wall of the first tube. The upper end of the first baffle extends beyond the third port, or the upper end of the first baffle is flush with the upper end of the third port. The lower end of the first baffle is connected to the bottom of the bottom cap, and the lower end of the first baffle is disposed on the drain hole, or the first baffle is located between the third port and the drain hole. The first tube is divided into a left cavity and a right cavity by the first baffle, with the third port located in the left cavity and the right cavity located below the first port.

[0022] According to some embodiments of the present invention, the device further includes a second baffle, which is located below the first port and on the side of the first baffle away from the third port. The upper end of the second baffle is connected to the inner wall of the first tube, and the lower end of the second baffle is connected to the inner wall of the bottom cap. The second baffle extends downward at an angle from its upper end to its lower end toward the first baffle.

[0023] According to some embodiments of this utility model, the first port of the first pipe body is connected to the steam conveying pipeline through the second pipe body. The second pipe body has an upper port and a lower port that are connected to each other. The diameter of the upper port is smaller than the diameter of the lower port. The upper port and the lower port are not coaxially arranged. The upper port is used to connect with the steam conveying pipeline, and the lower port is connected with the first port of the first pipe body.

[0024] Another technical solution adopted by this utility model is:

[0025] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0026] This invention provides a gas-liquid separation device that, by setting a first baffle, causes steam to collide and change direction multiple times, increasing the gas-liquid contact area and time. It utilizes inertial force to efficiently separate condensate droplets from the steam, resulting in good separation performance. Another gas-liquid separation device provided by this invention involves steam being forced to tumble over the first baffle, while the condensate droplets carried by the steam impact the surface of the first baffle due to inertia and slide down the first baffle to the bottom cap. The first baffle redirects the steam, and gas-liquid separation is achieved by relying on the inertia of the droplets, removing condensate from the steam. Attached Figure Description

[0027] Appendix Figure 1 This is a structural diagram of the gas-liquid separation device of Example 1;

[0028] Appendix Figure 2 This is a front view of the gas-liquid separation device of Example 1;

[0029] Appendix Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0030] Appendix Figure 4 This is a structural diagram of the first baffle of the gas-liquid separation device in Example 1;

[0031] Appendix Figure 5 This is a structural diagram of the second baffle of the gas-liquid separation device in Example 1;

[0032] Appendix Figure 6 This is a structural diagram of the gas-liquid separation device in Example 2;

[0033] Appendix Figure 7 This is a front view of the gas-liquid separation device of Example 2;

[0034] Appendix Figure 8 for Figure 7 A cross-sectional view along the AA direction;

[0035] Appendix Figure 9This is a structural diagram of the first baffle of the gas-liquid separation device in Example 2;

[0036] Appendix Figure 10 This is a structural diagram of the second baffle of the gas-liquid separation device in Example 2.

[0037] In the attached diagrams above:

[0038] 1-First tube body, 11-Third port; 2-Bottom cap; 3-First baffle, 31-First inclined plate, 32-Second inclined plate; 4-Second baffle, 41-Liquid passage hole; 5-Second tube body; 6-Third tube body; 7-Drain pipe; 8-Branch seat. Detailed Implementation

[0039] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0040] Example 1

[0041] See Figures 1 to 5 The gas-liquid separation device shown includes a first tube body 1, a bottom cap 2, a first baffle 3, and a second baffle 4, wherein:

[0042] The first pipe body 1 has a first port, a second port, and a third port 11. The first port is used to communicate with a steam conveying pipeline. The first port is opposite to the second port and the second port is located below the first port. The first port and the second port extend in a vertical direction (the center lines of the first port and the second port are the same vertical line). The third port 11 is located on the side of the first pipe body 1 and is located between the first port and the second port. The third port 11 is used to communicate with an activated carbon fiber adsorption box.

[0043] The bottom cap 2 is located at the lower part of the second tube body 5, and is positioned at the second port. The bottom cap 2 is recessed away from the first port, such as being bowl-shaped or hemispherical. A drain hole is provided on the bottom cap 2, communicating with the first tube body 1. The drain hole is connected to a steam trap via a drain pipe 7, which is positioned below the drain hole and has a steam trap. The bottom cap 2 serves as a buffer zone for liquid accumulation, with the drain hole located at the center of the bottom cap 2 to ensure smooth discharge of the separated condensate to the steam trap.

[0044] A first baffle 3 is disposed inside the first tube 1, extending vertically. The lower end of the first baffle 3 maintains a distance from the second port. The lower end of the first baffle 3 is flush with or extends beyond the lower end of the third port 11 by a certain distance. Both the front and rear ends of the first baffle 3 are connected to the inner wall of the first tube 1. The first tube 1 is divided into a left cavity by the first baffle 3 (see...). Figure 3(as indicated by B in the middle, the steam outlet side) and the right cavity (see...) Figure 3 As indicated by A in the middle (steam inlet side), the third port 11 is located in the left cavity, and the right cavity is located below the first port. The upper parts of the left cavity and the right cavity are connected, and the lower parts of the left cavity and the right cavity are connected.

[0045] See Figure 3-4 The first baffle 3 is serrated and includes multiple blocking units connected vertically in sequence. Each blocking unit includes a first inclined plate 31 and a second inclined plate 32 connected to the lower end of the first inclined plate 31. The first inclined plate 31 and the second inclined plate 32 form an angle. The first inclined plate 31 extends upwards from its lower end towards the steam conveying pipe, and the second inclined plate 32 forms a right angle or an acute angle with the first inclined plate 31. When steam comes into contact with the first baffle 3, it causes multiple collisions and deflections, using inertial force to efficiently separate condensate droplets from the steam. Large droplets first collide with the first baffle 3 and separate, while small droplets collide and aggregate during subsequent deflections, eventually settling. The separation rate for droplets ≥10μm is ≥95%.

[0046] In this example, the advantages of setting the serrated first baffle 3 are: it facilitates steam collision separation, the serrated surface increases the gas-liquid contact area and time, small droplets (10-50μm) collide and aggregate into large droplets, which settle at the bottom of the first tube 1; it guides the radially diffused steam to converge upward to the third port 11 (using the steam buoyancy to flow upward and the liquid gravity to settle downward, thus achieving gas-liquid separation).

[0047] In some implementations, see Figure 4 The first baffle 3 includes an upper section and a lower section connected together. The upper section is wider at the top and narrower at the bottom, and the lower section of the first baffle 3 has a uniform width. The lower end of the first baffle 3 extends a certain distance beyond the lower end of the third port 11 to prevent steam short circuit. The distance between the lower end of the first baffle 3 and the lower end of the third port 11 is preferably greater than or equal to 20 mm.

[0048] In some embodiments, the first port of the first pipe body 1 is connected to a steam conveying pipeline through a second pipe body 5. The second pipe body 5 has an upper port and a lower port that are interconnected. The upper port is located above the lower port, and the diameter of the upper port is smaller than that of the lower port. The upper and lower ports are not coaxial. The upper port is used to connect to the steam conveying pipeline, and the lower port is connected to the first port of the first pipe body 1. The lower port and the first port of the first pipe body 1 are coaxially arranged, while the upper port is not coaxially arranged. The upper end of the first baffle 3 extends into the second pipe body 5, and a distance is maintained between the upper end of the first baffle 3 and the upper port of the second pipe body 5. Steam flows into the second pipe body 5 from the small-diameter steam conveying pipeline. The upper port of the second pipe body 5 has a small diameter, and the lower port of the second pipe body 5 has a large diameter. By increasing the cross-section, the steam flow rate is reduced (flow rate reduction ≥ 60%), creating conditions for gas-liquid separation.

[0049] In this example, the second baffle 4 is located below the first baffle 3. The second baffle 4 can be located inside the first tube 1 (the outer periphery of the second baffle 4 is connected to the inner periphery of the first tube 1) or inside the bottom cap 2 (the outer periphery of the second baffle 4 is connected to the inner periphery of the bottom cap 2). The second baffle 4 is circular and perpendicular to the first baffle 3. The second baffle 4 and the bottom of the bottom cap 2 are spaced apart to form a liquid passage area. A liquid passage hole 41 is provided on the second baffle 4, and the liquid passage hole 41 is connected to the first tube 1 and the drain hole.

[0050] In some embodiments, the distance between the first baffle 3 and the second baffle 4 is greater than or equal to 60 mm, providing space for condensate to fall, and the bottom cap 2 ensures that condensate accumulates and is discharged.

[0051] In some embodiments, the upper end of the second pipe body 5 is connected to a steam conveying pipeline via a third pipe body 6, the diameter of which is the same as the diameter of the third pipe body 6. The third pipe body 6 may be a bend.

[0052] The specific implementation of the gas-liquid separation device in this example is as follows: Steam enters the first tube 1 and first collides with the right side of the first baffle 3. After passing the lower part of the first baffle 3, part of the steam turns to the left and collides upward with the left side of the first baffle 3, while part of the steam collides downward with the second baffle 4. After the collision, the steam and condensate droplets separate. The separated steam flows out from the third port 11, and the separated condensate droplets adhere to the inner wall of the first tube 1 and the second baffle 4 due to inertia. They flow down the wall and are discharged to the outside through the liquid passage 41 of the second baffle 4, the drain hole on the bottom cap 2, and the drain pipe 7, thus achieving gas-liquid separation. During the gas-liquid separation process, the steam trap is opened.

[0053] In this example, by setting a first baffle 3 and a second baffle 4, the serrated first baffle 3 increases the gas-liquid contact area, and the second baffle 4 further intercepts the steam. Regardless of whether the droplets are flowing at the bottom, they can be intercepted, achieving full-section steam interception, avoiding liquid hammer, and protecting downstream equipment (such as steam turbines and heat exchangers); guiding the steam to form a uniform flow field, extending the residence time, ensuring sufficient separation of droplets, and improving system energy efficiency (reducing steam carryover and lowering energy consumption).

[0054] In this example, for large droplets (≥50μm), the separation efficiency is ≥90% by setting the first baffle 3 and the second baffle 4; for medium droplets (10-50μm), the separation efficiency is ≥85% by setting the serrated first baffle 3 for collision aggregation and sedimentation; and for small droplets (≤10μm), the separation efficiency is ≥80% in the low-velocity zone at the bottom (flow rate ≤1m / s).

[0055] Example 2

[0056] See Figures 6 to 10The gas-liquid separation device includes a first tube body 1, a bottom cap 2, and a first baffle 3, wherein:

[0057] The first pipe body 1 is a reducing tee pipe. The first pipe body 1 has a first port, a second port, and a third port 11. The first port is used to connect with the steam conveying pipeline. The first port and the second port are opposite each other and the second port is located below the first port. The first port and the second port extend in a vertical direction (the center lines of the first port and the second port are the same vertical line). The third port 11 is located on the side of the first pipe body 1. The third port 11 is located between the first port and the second port. The third port 11 is connected to the activated carbon fiber adsorption box through a branch pipe.

[0058] The bottom cap 2 is located at the lower part of the first pipe body 1 and is positioned at the second port. The bottom cap 2 is recessed away from the first port to form a liquid accumulation area, such as a bowl shape or a hemispherical shape. A drain hole is provided on the bottom cap 2, which is connected to the first pipe body 1. The drain hole is connected to a drain valve through a drain pipe 7, which is located below the drain hole and has a drain valve. The bottom cap 2 serves as a liquid accumulation buffer, and the drain hole is located at the center of the bottom cap 2 to ensure smooth liquid drainage to the drain valve.

[0059] The first baffle 3 is disposed inside the first tube body 1, with its front and rear ends connected to the inner wall of the first tube body 1; the upper end of the first baffle 3 extends beyond the third port 11 by a certain distance, or the upper end of the first baffle 3 is flush with the upper end of the third port 11; the lower end of the first baffle 3 is connected to the bottom of the bottom cap 2, and the lower end of the first baffle 3 is disposed at the drain hole, that is, the drain hole is divided into two outlets by the first baffle 3, and the two outlets can be symmetrically arranged to ensure that condensate can be discharged from the two outlets, or the first baffle 3 is located between the third port 11 and the drain hole; the first tube body 1 is divided into a left cavity by the first baffle 3 (see Figure 3 (as indicated by B in the middle) and the right cavity (see Figure 3 (As indicated by A in the middle), the third port 11 is located in the left cavity, and the right cavity is located below the first port.

[0060] In some implementations, see Figure 9 The first baffle 3 includes an upper section and a lower section connected to each other. The upper section is cuboid in shape and the lower section is circular. The lower section is adapted to the inner wall of the bottom cap 2.

[0061] In some embodiments, a guide plate is provided on the top of the first baffle 3. The guide plate extends upward from its lower end to its upper end towards the side where the third port 11 is located. The guide plate guides the steam to smoothly tumble over and reduces the pressure drop (the measured pressure drop is ≤0.01MPa, which meets the requirement of "pressure drop of branch pipe connection ≤5% of working pressure" in GB / T 20801-2020).

[0062] In a preferred embodiment, the device further includes a second baffle 4, which is located below the first port and on the side of the first baffle 3 away from the third port 11, i.e., the second baffle 4 is located in the right cavity. The upper end of the second baffle 4 is connected to the inner wall of the first tube 1, and the lower end of the second baffle 4 is connected to the inner wall of the bottom cap 2. The second baffle 4 extends downwards from its upper end towards the first baffle 3. During the falling process, some steam will continue to collide with the second baffle 4, so that the steam and condensate are separated, and the steam is completely intercepted, resulting in a better separation effect.

[0063] In some embodiments, the first port of the first pipe body 1 is connected to a steam conveying pipeline via a second pipe body 5. The second pipe body 5 is an eccentric reducer, having an upper port and a lower port that intersect each other. The diameter of the upper port is smaller than that of the lower port, and the upper and lower ports are not coaxially arranged. The upper port is used to connect to the steam conveying pipeline, and the lower port is connected to the first port of the first pipe body 1. Steam flows into the second pipe body 5 from the small-diameter steam conveying pipeline. The upper port of the second pipe body 5 has a small diameter, and the lower port of the second pipe body 5 has a large diameter. By increasing the cross-section, the steam flow velocity is reduced (the velocity reduction is ≥60%), creating conditions for gas-liquid separation.

[0064] In this example, the width parameters of the first baffle 3 are as follows: the length of the first baffle 3 can be consistent with the inner diameter of the first pipe body 1 (the outer diameter of the first pipe body 1 is approximately 325mm, and the inner diameter is approximately 313mm). The welding bevel between the front and rear ends of the first baffle 3 and the inner wall of the first pipe body 1 adopts a V-shape of 30°, and the weld height is ≥5mm (consistent with the thickness of the first baffle 3) to ensure pressure bearing capacity. The verticality error of the first baffle 3 is ≤1‰, and the horizontality error is ≤2mm. It is fixed during welding using tooling fixtures to avoid skewing of the steam flow field.

[0065] The gas-liquid separation principle of this example gas-liquid separation device is as follows: Steam carrying condensate droplets enters the right cavity A of the first tube 1 through the second tube 5. During the flow, the steam collides with the first baffle 3. Due to the obstruction of the first baffle 3, the steam is forced to tumble over the first baffle 3 from the right cavity A to the left cavity B, and then flows out from the third port 11 into the activated carbon fiber adsorption box. The condensate droplets carried in the steam, due to their large inertia, continue to move downwards when the steam changes direction, and flow down along the first baffle 3 under the action of gravity, converging at the bottom of the seamless tube cap 2, and being discharged through the DN25 drain hole at the bottom via the steam trap.

[0066] The "gas-liquid overpass separation" mechanism in this example conforms to Stokes' law of separation. The separation efficiency is improved through parameter optimization: steam velocity control. Within the first tube 1, the steam velocity is reduced from 25 m / s in the third tube 6 (DN150) to 10 m / s (cross-sectional area increased fourfold), thus reducing the droplet inertial force (F = ρv). 2A) As the difference between the carrying capacity and the vapor increases, the separation efficiency of droplets with a diameter ≥10μm can reach over 92%.

[0067] In Examples 1-2, the thickness of the first baffle 3 is 1 to 1.5 times the wall thickness of the first tube 1, and the thickness of the first baffle 3 is ≥5mm. The material of the first baffle 3 is the same as that of the first tube 1, and the first baffle 3 can be Q235B carbon steel plate.

[0068] In Examples 1-2, the separation efficiency of steam and condensate is positively correlated with the diameter of the first tube 1. The larger diameter separation chamber provides a longer droplet settling path. CFD simulation verified that the separation efficiency of droplets ≥50μm in the first tube 1 is ≥90% for DN100-DN500, which meets the requirements for industrial steam desorption.

[0069] In Examples 1-2, the diameter of the first port of the first pipe body 1 is the same as the diameter of the second port, while the diameter of the third port 11 is smaller than the diameters of the first and second ports. The diameter of the lower port of the second pipe body 5, the diameter of the first port of the first pipe body 1, and the nominal diameter of the bottom cap 2 are equal. The diameter of the third port 11 of the first pipe body 1 and the diameter of the upper port of the second pipe body 5 are equal to the diameter of the steam conveying pipe. The diameter of the drain hole is DN25 to DN50.

[0070] In Examples 1-2, the vertical drop between the upper and lower port axes of the second pipe body 5 needs to be calculated based on the slope of the second pipe body 5 (usually the slope is ≥3‰) to ensure that the steam flow direction is vertically downward and slightly to the right.

[0071] In Examples 1-2, a gap is maintained between the left side of the upper port and the left side of the lower port of the second tube 5. The upper port of the second tube 5 is positioned to the right, and the right-side horizontal installation design concentrates the main flow direction of steam into the right cavity of the first tube 1 when it enters the first tube 1, forming a clear gas-liquid separation zone. This allows the steam to impact the first baffle 3 at a 45° angle (formed by the right-side horizontal installation of the second tube 5), reducing turbulence disturbance by 50% compared to vertical impact, and increasing the droplet sliding velocity along the surface of the first baffle 3 by 30% (verified by FLUENT simulation).

[0072] The advantages of the gas-liquid separation devices in Examples 1-2 are:

[0073] 1. The first baffle redirects the steam flow within the first pipe body. Due to inertia, condensate droplets carried in the steam cannot tumble over the baffle with the steam, thus being effectively intercepted and improving condensate collection efficiency. Compared to traditional methods that rely solely on gravity to collect condensate from the bottom of the pipe, this method intercepts droplets at different positions in the steam, including those in the upper and middle parts, significantly enhancing gas-liquid separation. The first baffle is welded inside the first pipe body and to the bottom cap, resulting in a simple structure that is easy to manufacture and install, requiring no complex equipment or components, thus reducing manufacturing and maintenance costs. Simultaneously, the welded connection ensures structural stability and sealing, preventing steam leakage and condensate seepage.

[0074] 3. High adaptability: This structure is suitable for various specifications of steam conveying pipelines. By rationally designing the height and position of the first baffle, it can adapt to steam conditions with different flow rates and pressures. Whether under high or low load operating conditions, it can effectively intercept droplets, remove condensate, and ensure the stable operation of the activated carbon fiber adsorption box.

[0075] 4. Protecting activated carbon fibers: By efficiently intercepting condensate droplets, it prevents condensate from entering the activated carbon fiber adsorption box with steam, thus protecting the activated carbon fibers from moisture and maintaining their good adsorption performance and service life; it also reduces the frequency of replacement or regeneration due to damage to the activated carbon fibers, thereby reducing production costs.

[0076] 5. Standardized Design: The pipe diameter can be converted to accommodate steam transmission pipelines from DN50 to DN600, eliminating the need to redesign the separation chamber structure and reducing engineering design costs. For example, in one scenario: the nominal diameter of the steam transmission pipeline is DN100, the nominal diameter of the first pipe body is DN200×DN200×DN100 (corresponding to the first, second, and third ports respectively), the nominal diameters of the lower and upper ports of the second pipe body are DN200×DN100, and the nominal diameter of the bottom cap is DN200; in another scenario: the nominal diameter of the steam transmission pipeline is DN150, the first… The nominal diameter of the pipe body is DN300×DN300×DN150 (corresponding to the first port, second port, and third port respectively), the nominal diameter of the lower and upper ports of the second pipe body is DN300×DN150, and the nominal diameter of the bottom cap is DN300; another case: the nominal diameter of the steam transmission pipeline is DN250, the nominal diameter of the first pipe body is DN500×DN500×DN250 (corresponding to the first port, second port, and third port respectively), the nominal diameter of the lower and upper ports of the second pipe body is DN500×DN250, and the nominal diameter of the bottom cap is DN500.

[0077] 6. Modular Installation: All components are standard piping elements (compliant with GB / T 12459 and GB / T 13401 standards), which can be mass-produced in the pipeline prefabrication plant and quickly assembled on-site via welding / flanges. The device can be directly integrated into the pipeline line, utilizing existing supports, reducing the installation period from 2-3 days in the traditional approach to 4-6 hours, without altering the plant's pipeline network layout. The device does not change the basic pipeline parameters. The pipe material (seamless carbon steel), nominal pressure (PN16), and connection method (welding / flange) are consistent with the original DN150 steam pipeline. No new pressure-bearing boundaries are introduced, nor are the pipeline design pressure / temperature changed, complying with the requirement in TSGD0001-2009 "Safety Technical Supervision Regulations for Pressure Pipelines - Industrial Pipelines" that "the selection of pipeline components should be adapted to the pipeline design conditions."

[0078] 7. Operating Condition Adaptability: Suitable for steam pressures of 0.1–2.5 MPa and steam temperatures of 100–300 °C. By adjusting the thickness of the first baffle (5–10 mm) and the welding process, different pressure ratings can be met. It satisfies pressure pipeline safety regulations while achieving low-cost and high-efficiency gas-liquid separation.

[0079] 8. Existing baffles are mostly flat plates or simple deflectors, without involving complex flow channels or multi-directional deflection. The gas-liquid separation device of this application has a simple structure (achieved through welding and stamping processes), is suitable for scenarios such as steam pipelines and heating systems, is easy to mass-produce, and solves the problems of incomplete droplet interception, chaotic flow field, low separation efficiency, and high risk of liquid hammer in traditional separation. It achieves efficient separation of droplets in steam, protects equipment, and improves system energy efficiency (in steam systems, condensate entering the equipment with steam can lead to problems such as liquid hammer and corrosion).

[0080] 9. The first baffle is welded to the first pipe body, and the second baffle is welded to the first pipe body. The welding procedure qualification shall be performed in accordance with NB / T47014, and the weld inspection shall meet the visual inspection requirements of JB / T 4730.4-2019 Class I. This falls within the scope of routine construction of pressure pipelines.

[0081] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas-liquid separation device, characterized in that, The device includes: The first tube has a first port, a second port, and a third port. The first port is used to connect with a steam conveying pipeline. The second port is located below the first port. The third port is located between the first port and the second port. The third port is used to connect with an activated carbon fiber adsorption box. A bottom cap is provided at the second port. The bottom cap is recessed away from the first port. A drain hole is provided on the bottom cap. The drain hole is connected to a steam trap through a drain pipe. A first baffle is disposed within the first tube and located below the first port. The first baffle extends downwards, with its lower end extending beyond or flush with the lower end of the third port. Both the front and rear ends of the first baffle are connected to the inner wall of the first tube. The first baffle includes multiple blocking units connected sequentially in a vertical direction. Each blocking unit includes a first inclined plate and a second inclined plate connected to the lower end of the first inclined plate, forming an angle between the first and second inclined plates.

2. The gas-liquid separation device according to claim 1, characterized in that, The first inclined plate extends upwards from its lower end toward the steam conveying pipe, and the second inclined plate forms a right angle or an acute angle with the first inclined plate.

3. The gas-liquid separation device according to claim 1, characterized in that, The device further includes a second baffle located below the first baffle. The outer periphery of the second baffle is connected to the inner periphery of the first tube or the inner wall of the bottom cap. A liquid passage hole is provided on the second baffle, which communicates with the first tube and the bottom cap.

4. The gas-liquid separation device according to claim 3, characterized in that, The distance between the lower end of the first baffle and the lower end of the third port is greater than or equal to 20 mm; and / or the distance between the first baffle and the second baffle is greater than or equal to 60 mm.

5. The gas-liquid separation device according to claim 1, characterized in that, The diameter of the third port is smaller than the diameters of the first and second ports.

6. The gas-liquid separation device according to claim 1, characterized in that, The first port of the first pipe body is connected to the steam conveying pipeline through the second pipe body. The second pipe body has an upper port and a lower port that are connected to each other. The diameter of the upper port is smaller than the diameter of the lower port. The upper port and the lower port are not coaxially arranged. The upper port is used to connect to the steam conveying pipeline, and the lower port is connected to the first port of the first pipe body. The upper end of the first baffle extends into the second pipe body.

7. The gas-liquid separation device according to claim 6, characterized in that, The upper port of the second pipe is connected to the steam conveying pipeline through the third pipe.

8. A gas-liquid separation device, characterized in that, The device includes: The first tube has a first port, a second port, and a third port. The first port is used to connect with a steam conveying pipeline. The second port is located below the first port. The third port is located between the first port and the second port. The third port is used to connect with an activated carbon fiber adsorption box. A bottom cap is provided at the second port. The bottom cap is recessed away from the first port. A drain hole is provided on the bottom cap. The drain hole is connected to a steam trap through a drain pipe. A first baffle is disposed within the first tube, with its front and rear ends connected to the inner wall of the first tube. The upper end of the first baffle extends beyond the third port, or the upper end of the first baffle is flush with the upper end of the third port. The lower end of the first baffle is connected to the bottom of the bottom cap, and the lower end of the first baffle is disposed on the drain hole, or the first baffle is located between the third port and the drain hole. The first tube is divided into a left cavity and a right cavity by the first baffle, with the third port located in the left cavity and the right cavity located below the first port.

9. The gas-liquid separation device according to claim 8, characterized in that, The device further includes a second baffle located below the first port and on the side of the first baffle away from the third port. The upper end of the second baffle is connected to the inner wall of the first tube, and the lower end of the second baffle is connected to the inner wall of the bottom cap. The second baffle extends downward at an angle from its upper end to its lower end toward the first baffle.

10. The gas-liquid separation device according to claim 8, characterized in that, The first port of the first pipe body is connected to the steam conveying pipeline through the second pipe body. The second pipe body has an upper port and a lower port that are connected to each other. The diameter of the upper port is smaller than the diameter of the lower port. The upper port and the lower port are not coaxially arranged. The upper port is used to connect with the steam conveying pipeline, and the lower port is connected with the first port of the first pipe body.

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