Round float valve for a float valve column

Abstract

The utility model discloses a round type float valve for float valve tower, including big float valve, the big float valve middle position is equipped with assembly hole, and the outside is equipped with big float valve gap, is equipped with big float valve valve leg on the big float valve in big float valve gap, big float valve valve leg lower extreme is equipped with valve leg stopper, the assembly hole is slidably connected with small float valve, small float valve downside fixedly connected with small float valve metal net, small float valve metal net lower extreme fixedly connected with the baffle ring, the baffle ring is fixedly connected with the installation rod in, the installation rod is rotatably connected with the agitating vane on, through above -mentioned structure, through the composite arrangement of big, small float valve, the structural design of combining metal net and agitating vane, has realized the high -efficient, stable operation in the wide gas velocity range. The structure is especially suitable for the working condition that the gas fluctuation is bigger, and effectively improves the operation flexibility and separation efficiency of float valve tray.

Description

Technical Field

[0001] This utility model relates to the field of circular float valve technology, and in particular to a circular float valve for a float valve tower. Background Technology

[0002] Valve trays are a newly developed type of tray characterized by a movable valve plate installed at each sieve opening. When the gas velocity through the sieve opening is high, the valve plate is lifted; when the gas velocity is low, the valve plate descends due to its own weight. The valve plate's position automatically adjusts according to the gas flow rate, thus stabilizing the gas velocity entering the liquid layer. Furthermore, because the gas enters the liquid layer horizontally below the valve plate, it reduces liquid entrainment and prolongs the gas-liquid contact time. A circular floating valve is one type of valve plate. To reduce manufacturing costs, valve trays typically use larger floating valve diameters to minimize the number of floating valves required; however, the increased mass of the floating valves with increasing diameter negatively impacts the performance of the valve tray.

[0003] In existing floating valve tray systems, the pressure drop caused by the tray's own weight is too large, and a small gas flow rate cannot open the floating valve, reducing the separation efficiency of the top layer light crude oil. Therefore, a circular floating valve for floating valve tray systems is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a circular float valve for a float valve tower, which solves the problems mentioned above.

[0005] To achieve the above objectives, a circular float valve for a float valve tower is provided, comprising a large float valve, an assembly hole in the middle of the large float valve and a large float valve gap on the outer side, a large float valve leg located in the large float valve gap, a valve leg stop block at the lower end of the large float valve leg, and a small float valve slidably connected in the assembly hole; a small float valve metal mesh is fixedly connected to the lower side of the small float valve, a retaining ring is fixedly connected to the lower end of the small float valve metal mesh, an installation rod is fixedly connected inside the retaining ring, and an agitator blade is rotatably connected to the installation rod.

[0006] According to the aforementioned circular float valve for a float valve tower, the large float valve has six gaps that are evenly distributed.

[0007] According to the aforementioned circular float valve for a float valve tower, the large float valve leg and the large float valve are integrally formed.

[0008] According to the aforementioned circular float valve for a float valve tower, the diameter of the assembly hole is smaller than that of the small float valve and the retaining ring, but larger than that of the metal mesh of the small float valve.

[0009] According to the aforementioned circular float valve for a float valve tower, the mesh size of the small float valve metal mesh is 1mm.

[0010] According to the aforementioned circular float valve for a float valve tower, the gap between the large float valves on the large float valve is 2mm.

[0011] According to the aforementioned circular float valve for a float valve tower, the large float valve has a diameter of 50 mm and a valve thickness of 2 mm.

[0012] According to the aforementioned circular float valve for a float valve tower, the small float valve has a diameter of 20mm and a valve thickness of 1.5mm.

[0013] This utility model has the following beneficial effects: 1. Compared with existing technologies, at low gas velocities, the lightweight small float valve can be lifted independently, providing the main gas passage and effectively solving the problems of severe leakage and low mass transfer efficiency caused by the inability of traditional large float valves to open at low gas velocities. At high gas velocities, the large and small float valves open in tandem, providing a large gas passage area to meet the requirements of large throughput while maintaining a low pressure drop. This allows the tray to maintain efficient and stable operation across a wide range of gas velocities, from extremely low to extremely high, adapting to fluctuations in production load.

[0014] 2. Compared with existing technologies, after the gas passes through the small float valve, it is broken into finer, more uniform bubbles by passing through the metal mesh below, greatly increasing the contact area between the gas and liquid phases. The airflow drives the agitator blades to rotate, generating strong shearing and agitation on the liquid in the tray, thinning the gas-liquid interface film, continuously renewing the mass transfer surface, and thus improving the mass transfer coefficient. Through the dual mechanisms of "microbubbles" and "forced agitation," a mass transfer efficiency far exceeding that of traditional float valves is achieved. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a structural diagram of a circular float valve for a float valve tower according to the present invention; Figure 2 This is a structural diagram of the large float valve of a circular float valve for a float valve tower according to this utility model; Figure 3 This is a structural diagram of a small float valve of a circular float valve for a float valve tower according to this utility model; Figure 4 This is a top view of the small float valve of the circular float valve for a float valve tower according to this utility model.

[0016] Legend: 1. Large float valve; 11. Large float valve clearance; 12. Assembly hole; 2. Small float valve; 3. Small float valve metal mesh; 4. Retaining ring; 5. Mounting rod; 51. Agitator blade; 6. Large float valve leg; 61. Valve leg stop block. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] Reference Figure 1-4 This utility model discloses a circular float valve for a float valve tower, comprising a large float valve 1, which is a disc-shaped structure with a diameter of 50mm and a valve body thickness of 2mm to ensure structural strength and control overall weight. The large float valve 1 has an assembly hole 12 in the middle for installing a small float valve 2, and six evenly distributed large float valve gaps 11 on its outer side, each 2mm wide, serving as an initial channel for gas under low load. The large float valve 1, located within the large float valve gaps 11, has valve legs 6, which are integrally formed with the large float valve 1, enhancing overall rigidity. Each valve leg has a valve leg stop 61 at its end to limit the maximum opening of the large float valve under airflow, preventing the float valve from detaching from the tower plate. A small float valve 2 is slidably connected within the assembly hole 12. The small float valve 2 has a diameter of 20mm and a thickness of 1.5mm. It is lightweight and can open first at lower gas velocities. A small float valve metal mesh 3 is fixedly connected to the lower side of the small float valve 2. The mesh size of this metal mesh is 1mm, which is used to break up bubbles and enhance mass transfer during gas-liquid contact. A retaining ring 4 is fixedly connected to the lower end of the small float valve metal mesh 3. A mounting rod 5 is fixedly connected inside the retaining ring 4, and an agitator blade 51 is rotatably connected to the mounting rod 5. When gas flows through the area of ​​the small float valve, the agitator blade 51 rotates under the action of the airflow, further enhancing the mixing and contact of the gas and liquid phases.

[0019] The lower end of the metal mesh is connected to a retaining ring 4, the diameter of which is larger than that of the assembly hole 12, thereby limiting the upward stroke of the small float valve 2 and preventing it from falling out of the large float valve.

[0020] Under conditions of no airflow or extremely low gas velocity, both the large float valve 1 and the small float valve 2 are in the closed state. At this time, gas can only enter the upper tray through the gap 11 of the large float valve and the tiny gap between the large float valve 1 and the tray, maintaining the basic mass transfer process while effectively preventing liquid leakage from the valve orifice.

[0021] As the gas flow rate gradually increases, the smaller float valve 2, being lighter, is the first to open. After passing through the smaller float valve 2, the gas is dispersed into fine bubbles by the metal mesh 3, significantly increasing the gas-liquid contact area. Simultaneously, the high-speed gas flow drives the agitator blades 51 to rotate, further enhancing the renewal and mixing of the gas-liquid interface, thereby improving mass transfer efficiency. During this stage, the larger float valve 1 remains closed, but the opening of the smaller float valve reduces the overall tray pressure drop.

[0022] As the gas flow rate continues to increase to a higher level, the large float valve 1 is also lifted by the airflow and enters a fully open state. At this time, the gas simultaneously passes through the large float valve gap 11 and the small float valve area, achieving efficient mass transfer under high flow rate. The valve leg stop 61 at the end of the large float valve leg 6 ensures that the large float valve operates stably at its maximum opening, avoiding instability caused by airflow fluctuations.

[0023] Working principle: In actual operation, when the gas flow rate is very low, neither the large nor small valves are open; the gas enters the upper tray through the gap 11 of the large float valve and the gap between the large float valve 1 and the tray. As the gas flow rate gradually increases, the small float valve 2 can be easily opened. Under the action of the stirring blades 51 and the metal mesh 3 of the small float valve, the gas-liquid contact area is increased, as is the effective area of ​​the gas channel. The gas distribution is more uniform, the mass transfer efficiency is improved, and the tray pressure drop is reduced. As the gas continues to increase, the large float valve 1 is also gradually opened until all float valves are open.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A circular float valve for a float valve tower, characterized in that, Includes a large float valve (1), which has an assembly hole (12) in the middle and a large float valve gap (11) on the outside. The large float valve (1) located in the large float valve gap (11) has a large float valve leg (6), and the lower end of the large float valve leg (6) has a valve leg stop (61). A small float valve (2) is slidably connected in the assembly hole (12). The small float valve (2) is fixedly connected to a small float valve metal mesh (3) on its lower side. A retaining ring (4) is fixedly connected to the lower end of the small float valve metal mesh (3). An installation rod (5) is fixedly connected inside the retaining ring (4). An agitator blade (51) is rotatably connected to the installation rod (5).

2. A circular float valve for a float valve tower according to claim 1, characterized in that, The large float valve gap (11) has six gaps, which are evenly distributed.

3. A circular float valve for a float valve tower according to claim 2, characterized in that, The large float valve leg (6) and the large float valve (1) are integrated into one piece.

4. A circular float valve for a float valve tower according to claim 3, characterized in that, The diameter of the assembly hole (12) is smaller than that of the small float valve (2) and the retaining ring (4), and larger than that of the small float valve metal mesh (3).

5. A circular float valve for a float valve tower according to claim 4, characterized in that, The mesh size of the small float valve metal mesh (3) is 1 mm.

6. A circular float valve for a float valve tower according to claim 5, characterized in that, The gap (11) of the large float valve (1) is 2mm.

7. A circular float valve for a float valve tower according to claim 6, characterized in that, The large float valve (1) has a diameter of 50 mm and a valve thickness of 2 mm.

8. A circular float valve for a float valve tower according to claim 7, characterized in that, The small float valve (2) has a diameter of 20 mm and a valve thickness of 1.5 mm.

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