Efficient cyclone

Abstract

The utility model provides an efficient cyclone, which relates to the technical field of oil-water cyclone separators and comprises a cyclone pipe, an inlet channel, an overflow pipe, a reducer pipe and a water outlet pipe. The oil-water mixed liquid is introduced into the cyclone pipe 1 through the multiple inlets, so that the inlet direction of fluid can be effectively dispersed, the fluid in the cyclone cavity is uniformly distributed, a local high-turbulence area is not easy to form, a centrifugal separation flow field in the cyclone runs stably, the oil drop coalescence efficiency is effectively improved, and the oil drop coalescence effect is improved. Therefore, the use effect of the oil-water cyclone separator is better.

Description

Technical Field

[0001] This utility model relates to the field of oil-water hydrocyclone separator technology, and more specifically, to a high-efficiency hydrocyclone. Background Technology

[0002] Oil-water hydrocyclone separators achieve two-phase separation of oil and water based on centrifugal force and density difference. The mixture enters the hydrocyclone chamber through the tangential inlet and forms a high-speed rotating flow field (centrifugal acceleration can reach over 2000g). The denser water phase is thrown to the outer wall and discharged along the bottom outlet, while the lighter oil phase gathers towards the center and is discharged through the overflow outlet, achieving efficient separation.

[0003] Existing oil-water hydrocyclones typically have only one inlet for the oil-water mixture. Tangential liquid inlet in a single inlet can easily lead to uneven fluid distribution within the hydrocyclone, which in turn can easily form localized high-turbulence regions, disrupting the stable centrifugal separation flow field and thus reducing oil droplet coalescence efficiency. In summary, the problem of how to reduce turbulent disturbances during the liquid inlet process of the hydrocyclone to ensure uniform distribution of the oil-water mixture within the hydrocyclone urgently needs to be solved. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a high-efficiency cyclone separator.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A high-efficiency hydrocyclone includes a hydrocyclone tube, an inlet channel, an overflow pipe, a reducer, and an outlet pipe.

[0007] Four rectangular inlet channels are connected to the inside of the cyclone tube and are arranged tangentially to the cyclone tube to form a uniform rotating flow field.

[0008] The overflow pipe is fixed at the top of the vortex tube and connected to the inside of the vortex tube;

[0009] The vortex tube, the reducer, and the outlet pipe are connected coaxially from top to bottom, and the diameters of the vortex tube, the reducer, and the outlet pipe decrease in sequence.

[0010] Furthermore, the end of the inlet channel away from the cyclone tube is blocked, and the inlet channel is laterally fixed with an inlet pipe that communicates with its interior and is connected to the booster pump. A rotating shaft is rotatably connected inside the inlet channel, and several spiral guide vanes are provided on the rotating shaft.

[0011] Furthermore, the spiral guide vanes are arranged at an angle of 18-23 degrees and are arranged in 6-8 equal intervals.

[0012] The above scheme is equipped with a rotating shaft and spiral guide vanes in each inlet channel. After the oil-water mixture is pressurized and introduced into the inlet channel, it can overcome the resistance of the spiral guide vanes, thereby causing the rotating shaft to move under the impact of the fluid. This can enhance the rotational energy. Then, under the action of the spiral guide vanes, the oil-water mixture is smoothly transported to the vortex tube to further reduce turbulence interference.

[0013] Furthermore, the inlet pipe is a rectangular tube, and a filter element that fits against the inner wall of the inlet pipe is provided at the end of the inlet pipe away from the inlet channel.

[0014] The above solution filters the oil-water mixture before it is introduced, and adds a pre-filter to avoid the probability of fibrous impurities subsequently getting tangled on the overflow pipe or spiral guide vanes and causing equipment blockage.

[0015] Furthermore, a flow regulating valve is provided on the inlet pipe.

[0016] The above solution uses a flow regulating valve to match the flow rate of the oil-water mixture with the guiding capacity of the spiral guide vanes, while ensuring that the fluid has sufficient kinetic energy to overcome the resistance of the spiral guide vanes to form a stable swirling flow.

[0017] Furthermore, a heat tracing coil is provided on the outer wall of the cyclone tube, and steam flows inside the heat tracing coil.

[0018] The above solution involves installing a heat tracing coil on the outer wall of the cyclone tube and circulating steam into its pipeline to specifically maintain the temperature of critical areas (such as preventing the condensation of high-viscosity crude oil) and reduce energy waste.

[0019] Furthermore, the reducing pipe and the water outlet pipe are equipped with heat tracing coils, and steam flows through the heat tracing coils.

[0020] The above scheme adopts a fully enclosed outer wall design to ensure that the cyclone chamber, variable diameter chamber and water outlet chamber are heated simultaneously, avoiding local low temperature that could cause wax precipitation in the oil phase or freezing in the water phase, thus improving separation stability by more than 30%.

[0021] Furthermore, the taper angle of the variable diameter pipe is 10-20 degrees.

[0022] Furthermore, the rotating shaft and the spiral guide vanes are made of 316L stainless steel.

[0023] In the above scheme, the rotating shaft and the spiral guide vanes are made of 316L stainless steel, which improves corrosion resistance and extends service life.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] Compared to existing technologies, this application effectively disperses the direction of fluid entry by introducing an oil-water mixture into the cyclone tube through multiple inlets. This results in a more uniform fluid distribution within the cyclone cavity, making it less prone to forming localized high-turbulence regions. Consequently, the centrifugal separation flow field in the cyclone separator operates stably, and the oil droplet coalescence efficiency is effectively improved, leading to better performance of the oil-water cyclone separator. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the inlet pipe;

[0028] Figure 3 This is a schematic diagram of the filter installation.

[0029] Figure 4 A schematic diagram of the flow control valve installation;

[0030] Figure label:

[0031] 1. Swirl tube; 2. Inlet channel; 3. Overflow pipe; 4. Reducer; 5. Outlet pipe; 6. Liquid inlet pipe; 7. Shaft; 8. Spiral guide vanes; 9. Filter element; 10. Flow regulating valve. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0033] like Figure 1 and Figure 2 As shown, a high-efficiency hydrocyclone includes a hydrocyclone tube 1, an inlet channel 2, an overflow pipe 3, a reducing pipe 4, and an outlet pipe 5.

[0034] Four rectangular inlet channels 2 are connected to the interior of the vortex tube 1 and are arranged tangentially to the vortex tube 1 to form a uniform rotating flow field;

[0035] The overflow pipe 3 is fixed to the top of the vortex pipe 1 and is connected to the inside of the vortex pipe 1;

[0036] The vortex tube 1, the reducer tube 4, and the outlet tube 5 are connected coaxially from top to bottom, and the diameters of the vortex tube 1, the reducer tube 4, and the outlet tube 5 decrease in sequence.

[0037] Further refinements of the embodiments of this utility model, such as... Figure 2 As shown, the inlet channel 2 is blocked at one end away from the cyclone tube 1, and the inlet channel 2 is laterally fixed with an inlet pipe 6 that communicates with its interior and is connected to the booster pump. A rotating shaft 7 is rotatably connected inside the inlet channel 2, and several spiral guide vanes 8 are provided on the rotating shaft 7 (the booster pump is not shown in the figure).

[0038] In a further optimization of the above embodiment, the spiral guide vanes 8 are arranged at an angle of 18-23 degrees and are arranged in 6-8 equal intervals. The rotating shaft 7 and the spiral guide vanes 8 are made of 316L stainless steel to enhance corrosion resistance.

[0039] The working process of this utility model:

[0040] First, the oil-water mixture is introduced into the vortex chamber from multiple directions by a booster pump, specifically using four tangential inlets. Then, the risk of flow deviation at a single inlet is reduced by diversion, ensuring that the fluid enters the vortex chamber uniformly and forms a uniform rotating flow field. The radial multi-inlet layout can effectively alleviate the problem of turbulent disturbance caused by single-inlet feeding.

[0041] Meanwhile, a rotating shaft 7 and a spiral guide vane 8 are installed in each inlet channel 2. After the oil-water mixture is pressurized and introduced, the resistance of the spiral guide vane 8 can be overcome, causing the rotating shaft 7 to move under the impact of the fluid. Subsequently, the spiral guide vane 8 increases the tangential velocity of the fluid to 8-12 m / s, which can enhance the initial rotational energy. Then, under the action of the spiral guide vane 8, the oil-water mixture is smoothly transported to the vortex tube 1 to further reduce turbulence interference and form a stable vortex. Specifically, the spiral guide vane 8 guides the fluid into the vortex cavity with a preset tilt angle of 18-23 degrees (preferably 22 degrees) in a spiral trajectory to further reduce the occurrence of turbulence disturbance. The spiral angle of the spiral guide vane 8 matches the flow velocity in the inlet channel 2, increasing the angular velocity component and enhancing the centrifugal separation efficiency (e.g., a 22° angle can improve the separation accuracy by 12%-15%).

[0042] The rotating shaft 7 and the spiral guide vane 8 are made of 316L stainless steel, which provides good corrosion resistance.

[0043] Compared with existing technologies, this application can effectively disperse the direction of fluid entry by setting multiple inlets to pass oil-water mixture into the cyclone tube 1, thereby making the fluid distribution in the cyclone cavity more uniform and less likely to form local high turbulence areas. Consequently, the centrifugal separation flow field in the cyclone separator operates stably, and the oil droplet coalescence efficiency is effectively improved, resulting in better performance of the oil-water cyclone separator.

[0044] In some embodiments, such as Figure 3As shown, the inlet pipe 6 is a rectangular pipe and a filter element 9 that fits against the inner wall of the inlet pipe 6 is provided at one end of the inlet pipe 6 away from the inlet channel 2. In this embodiment, the oil-water mixture is filtered before it is introduced. The pre-filter element 9 is added to avoid the probability of fibrous impurities subsequently wrapping around the overflow pipe 3 or the spiral guide vane 8 and causing equipment blockage. The filter element is also easy to disassemble and replace.

[0045] In other embodiments, such as Figure 4 As shown, a flow regulating valve 10 is provided on the inlet pipe 6; in this embodiment, the flow regulating valve 10 can make the inlet flow rate of the oil-water mixture match the guiding capacity of the spiral guide vane 8, while ensuring that the fluid has enough kinetic energy to overcome the resistance of the spiral guide vane to form a stable vortex.

[0046] In other embodiments, a heat tracing coil is provided on the outer wall of the cyclone tube 1, and steam flows through the heat tracing coil (the heat tracing coil is not shown in the figure and is the prior art, so no improvement is made; specifically, it enters from the top and exits from the bottom and is internally connected to a steam source); in this embodiment, the heat tracing coil is provided on the outer wall of the cyclone tube 1 and steam is circulated into its pipeline, which can specifically maintain the temperature of key areas (such as preventing high viscosity crude oil from condensing) and reduce energy waste;

[0047] In addition, proper heat tracing has many other benefits:

[0048] (1) Heating can reduce the viscosity of oil-water mixture, reduce the migration resistance of oil droplets in the centrifugal field, and improve Stokes separation efficiency;

[0049] (2) In addition, in cold environments (<15℃) or when processing high pour point oils, heating can prevent the oil phase from solidifying and adhering to the inner wall of the hydrocyclone, thus avoiding flow channel blockage and separation failure.

[0050] (3) Heating can reduce the deposition of wax or asphalt on the inner wall of the hydrocyclone and extend the maintenance cycle;

[0051] In a further optimization of the above embodiment, a heat tracing coil is provided on the reducing pipe 4 and the water outlet pipe 5, and steam flows through the heat tracing coil (the heat tracing coil is not shown in the figure).

[0052] The taper angle of the reducing pipe 4 is 10-20 degrees; this embodiment adopts a fully enclosed outer wall design to ensure that the vortex chamber, reducing pipe chamber and water outlet chamber are heated synchronously, avoiding local low temperature that could cause wax precipitation in the oil phase or freezing in the water phase, thus improving separation stability by more than 30%.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency hydrocyclone, characterized in that, It includes a vortex tube (1), an inlet channel (2), an overflow pipe (3), a reducer (4), and an outlet pipe (5). Four rectangular inlet channels (2) are connected to the interior of the vortex tube (1) and are arranged tangentially to the vortex tube (1) to form a uniform rotating flow field; The overflow pipe (3) is fixed at the top of the vortex pipe (1) and connected to the inside of the vortex pipe (1); The vortex tube (1), the reducing pipe (4), and the outlet pipe (5) are connected coaxially from top to bottom, and the diameters of the vortex tube (1), the reducing pipe (4), and the outlet pipe (5) decrease sequentially.

2. The high-efficiency hydrocyclone according to claim 1, characterized in that, The inlet channel (2) is blocked at one end away from the cyclone tube (1), and the inlet channel (2) is laterally fixed with an inlet pipe (6) that communicates with its interior and is connected to the booster pump. A rotating shaft (7) is rotatably connected inside the inlet channel (2), and several spiral guide vanes (8) are provided on the rotating shaft (7).

3. A high-efficiency hydrocyclone according to claim 2, characterized in that, The spiral guide vanes (8) are arranged at an angle of 18-23 degrees and are arranged in 6-8 equal intervals.

4. A high-efficiency hydrocyclone according to claim 2, characterized in that, The inlet pipe (6) is a rectangular tube and a filter element (9) that fits against the inner wall of the inlet pipe (6) is provided at one end of the inlet pipe (6) away from the inlet channel (2).

5. A high-efficiency hydrocyclone according to claim 2, characterized in that, A flow regulating valve (10) is provided on the inlet pipe (6).

6. A high-efficiency hydrocyclone according to claim 1, characterized in that, A heat tracing coil is provided on the outer wall of the swirl tube (1), and steam flows through the heat tracing coil.

7. A high-efficiency hydrocyclone according to claim 1, characterized in that, The reducing pipe (4) and the water outlet pipe (5) are equipped with heat tracing coils, and steam flows through the heat tracing coils.

8. A high-efficiency hydrocyclone according to claim 1, characterized in that, The taper angle of the reducing pipe (4) is 10-20 degrees.

9. A high-efficiency hydrocyclone according to claim 2, characterized in that, The rotating shaft (7) and the spiral guide vane (8) are made of 316L stainless steel.

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