A 175mpa hydrocyclone desander

Abstract

The present application belongs to the technical field of sand removing equipment, and provides a 175MPa cyclone sand remover, which comprises an inner container, a filtering assembly and a driving assembly.In the present application, the fluid with small density drives the fine sand to enter the inner container from the through hole, the fluid passes through the filtering cover after moving upward, the fine sand is blocked by the filtering cover, and the fine sand slowly enters the sand in the flow passage I and moves downward along the flow passage I and is discharged through the flow passage II, so that the sand moved upward by the fluid is finally mostly discharged into the sand collecting cylinder, the fine sand is effectively prevented from repeatedly moving upward and downward by the fluid moving upward, the filtering cover is prevented from being damaged, the sand blocked on the filtering cover is prevented from being more seriously blocked, the filtering cover is prevented from being seriously blocked, the feed speed and the discharge speed in the sand removing cylinder are not much different and are relatively stable, so that the sand removing cylinder is prevented from being congested, and the sand removing effect is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sand removal equipment, and particularly relates to a 175MPa cyclone sand remover. BACKGROUND

[0002] The cyclone sand remover is a device for separating solid particles in fluid by centrifugal sedimentation and density difference principle. In the process of oil and natural gas exploitation, sand and gravel and other impurities often mix into the fluid. These sand and gravel not only cause abrasion to the equipment and reduce the service life of the equipment, but also may block the pipeline and affect the normal production. The installation of the cyclone sand remover at the wellhead can effectively remove the sand and gravel in the natural gas and protect the downstream equipment. However, due to high wellhead pressure, complex medium and variable fluid, the sand removal at the wellhead is more difficult than that at the gas gathering station, metering station and transfer station. The wellhead sand remover is usually required to serve multiple wellheads and multiple gas fields, and the sand content and size of different wells in each gas field or even different wells in the same gas field are different. At the same time, due to the corrosion of a large amount of sulfide, carbon dioxide and other corrosive gases in oil and natural gas, the carrying capacity of the sand remover will continuously decrease, and the sand remover cannot be used in the rated working pressure environment for a long time, but can only be used in the environment below the rated working pressure. Therefore, the efficient sand removal equipment is very important for the safety and stability of industrial production. The cyclone sand remover on the market can achieve good sand removal effect in a certain pressure range, but in the super high pressure environment, especially when the pressure reaches 175MPa, the existing sand remover often has problems of unstable structure, low sand removal efficiency and easy damage.

[0003] The basic principle of the cyclone desander is that the sand-containing fluid enters the desanding cylinder tangentially to form a high-speed rotating cyclone. Due to the centrifugal force, the sand with a higher density is thrown to the outer periphery of the inner cavity of the desanding cylinder, thus forming an outer vortex flow field, while the fluid with a lower density is concentrated in the central part of the desanding cylinder and moves towards the central axis, forming an upwardly moving inner vortex at the center of the axis, and then being discharged through the discharge pipe. After the sand-containing fluid is desanded by the cyclone, the sand with a lower density is further filtered by the filtering assembly at the discharge pipe to ensure that there is no sand in the discharged fluid. During the desanding process, due to the high pressure of the sand-containing fluid after entering the cyclone desander and the uneven sand content of the sand-containing fluid, the cyclone formed by the sand-containing fluid in the cyclone desander is unstable, and the flow rate of the cyclone is uneven, which may cause the fine sand to move downward due to the instability of the inner vortex flow field and the influence of the outer vortex flow field when the fine sand is driven upward by the fluid to move close to the filtering assembly. The fine sand moves upward again after moving downward, and the repeatedly upward and downward movement of the fine sand may impact the filtering assembly and the sand blocked on the filtering assembly. On the one hand, a large amount of sand may impact the filtering assembly for a long time, which may damage the filtering assembly and affect the filtering effect of the filtering assembly. On the other hand, a large amount of sand may impact the sand that has been blocked for a long time, which may make the blocked sand more tightly blocked, resulting in serious blocking of the filtering assembly and increasing the difficulty of backwashing the filtering assembly in the later stage. In summary, when the desanding environment reaches 175 MPa or above, the inner vortex and the outer vortex in the desanding cylinder are unstable, which may cause the fine sand driven upward by the fluid to impact the filtering assembly and the sand blocked on the filtering assembly, thereby possibly damaging the filtering assembly, affecting the filtering effect of the filtering assembly, causing serious blocking of the filtering assembly, and causing a large difference between the feeding speed and the discharging speed, which may cause congestion in the desanding cylinder and reduce the desanding effect. SUMMARY

[0004] The purpose of the present application is to provide a 175 MPa cyclone desander, which aims to solve the technical problem that when the desanding environment reaches 175 MPa or above, the inner vortex and the outer vortex in the desanding cylinder are unstable, which may damage the filtering assembly or cause serious blocking of the filtering assembly, thereby causing a large difference between the feeding speed and the discharging speed, causing congestion in the desanding cylinder, and reducing the desanding effect.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A 175 MPa cyclone desander includes a desanding cylinder, a feeding pipe, a discharging pipe, and a sand collecting cylinder, and further includes:

[0007] The inner container is fixedly installed in the inner cavity of the sand removing cylinder, and comprises a cylinder segment and a spout segment, the spout segment is close to the sand collecting cylinder, a through hole is formed through the spout segment, a flow channel one is formed in the wall of the cylinder segment, a flow channel two is formed in the wall of the spout segment, the flow channel two is staggered with the through hole, and the flow channel two is communicated with the flow channel one.

[0008] The filtering assembly comprises a filtering cylinder and a filtering cover, the filtering cylinder is sleeved between the discharge pipe and the cylinder segment, and the filtering cover is fixed in the filtering cylinder.

[0009] The driving assembly is installed at the feeding port of the sand removing cylinder and connected with the feeding pipe, the driving assembly is connected with the filtering assembly and drives the filtering assembly to shake.

[0010] The sand-containing fluid drives the fine sand to enter the inner container through the through hole, the sand-containing fluid is discharged through the discharge pipe and the filtering cover, the fine sand is filtered by the filtering cover and enters the flow channel one, and then is discharged into the sand collecting cylinder through the flow channel two.

[0011] As a preferred technical scheme of the above technical scheme, the filtering cover is in the shape of an inverted cone, and the outer side of the filtering cover is inclined outward and faces the flow channel one.

[0012] As a preferred technical scheme of the above technical scheme, the driving assembly comprises:

[0013] The guide turbine is rotatably installed at the feeding port of the sand removing cylinder.

[0014] The transmission member is transmissionally connected between the guide turbine and the rotating shaft, and the guide turbine drives the rotating shaft to rotate through the transmission of the transmission member.

[0015] The fixed shaft is fixed at the top of the inner cavity of the sand removing cylinder, and the elastic connecting member is connected between the fixed shaft and the rotating shaft.

[0016] The rotating shaft is provided with a plurality of clamping blocks on the periphery, the clamping blocks are slidably connected with the transmission member, the rotating shaft moves up and down while rotating, the bottom end of the rotating shaft is rotatably connected with the connecting plate, and the other end of the connecting plate is fixedly connected with the filtering cylinder.

[0017] As a preferred technical scheme of the above technical scheme, the rotating shaft is provided with a first protruding block at the top end, the first protruding block is located at the edge of the top end of the rotating shaft, the fixed shaft is provided with a second protruding block at the bottom end, the second protruding block is located at the edge of the bottom end of the fixed shaft, one side of the first protruding block and the second protruding block is an inclined surface, the first protruding block is opposite to the inclined surface of the second protruding block, that is, when the rotating shaft drives the first protruding block to rotate to a specific position, the inclined surface of the first protruding block is coincided with the inclined surface of the second protruding block.

[0018] As a preferred technical scheme of the above technical scheme, the inclination direction of the blades of the guide turbine faces downward.

[0019] As the preferred technical scheme of the above, the discharge pipe is provided with a cleaning assembly, the cleaning assembly comprises a driving turbine and a cleaning brush, the driving turbine is installed in the discharge pipe, the driving turbine is coaxial with the discharge pipe, one end of an output shaft of the driving turbine is provided with the cleaning brush, the cleaning brush is in a spade shape, and the cleaning brush is attached to a top surface of the filter cover.

[0020] As the preferred technical scheme of the above, the inside wall of the desanding cylinder is provided with a plurality of guide plates, the plurality of guide plates are in a spiral distribution state, the plurality of guide plates are located at the feed inlet, the guide plates are elastically rotatably installed on the inside wall of the desanding cylinder, and the guide plates have a downward rotation trend.

[0021] Compared with the prior art, the application has the following advantages:

[0022] 1、In the application, when the desanding environment reaches 175MPa or above, the fluid with small density drives the fine sand from the through hole into the inner container and moves upward along the inner container to form an inner vortex flow field. The fluid passes through the filter cover after moving upward, while the fine sand is blocked by the filter cover and slowly moves to the outside of the filter cover under the impact of the fluid. The fine sand enters flow passage one due to its own gravity and the impact of the fluid, moves downward along flow passage one, and is discharged through flow passage two, and finally enters the sand collecting cylinder through the bottom of the desanding cylinder. In this way, the sand driven upward by the fluid can be effectively discharged into the sand collecting cylinder, avoiding the fine sand repeatedly moving upward and downward under the impact of the fluid, avoiding the fine sand repeatedly impacting the filter cover and the sand blocked on the filter cover, thereby avoiding damage to the filter cover and further avoiding the sand blocked on the filter cover from being more seriously blocked, avoiding the filter cover from being seriously blocked, so that the feeding speed and the discharging speed in the desanding cylinder are similar and stable, thereby avoiding congestion in the desanding cylinder and improving the desanding effect.

[0023] 2、In the application, the sand with large density slowly moves downward along the inner wall of the desanding cylinder into the sand collecting cylinder under its own gravity, and the sand with small density passes through flow passage one and flow passage two into the sand collecting cylinder. In this way, the sand with large density and the sand with small density are separated from the fluid without affecting each other, thereby further improving the desanding effect.

[0024] 3. In this invention, the filter assembly is driven to move up and down, which effectively prevents the filter cover from clogging and also helps the sand and gravel to enter the flow channel, improving the sand removal effect. At the same time, the up and down movement of the filter assembly, combined with the impact of the fluid in the inner tank and the fluid passing through the filter cylinder, can further dislodge the sand and gravel clogging the filter cover, thereby further preventing the filter cover from clogging. In addition, after the first protrusion moves from the inclined surface of the second protrusion, the elastic connector causes the rotating shaft to move upward. The rotating shaft moves upward at a relatively fast speed, causing the first protrusion to quickly press against the bottom of the fixed shaft. During this process, the first protrusion will vibrate when it contacts the bottom of the fixed shaft, causing the filter assembly to vibrate intermittently. Combined with the up and down movement of the filter assembly, this further effectively prevents the filter cover from clogging, thereby improving the sand removal effect.

[0025] 4. In this invention, the guiding action of the guide turbine and several guide plates enables the sand-containing fluid to quickly and stably form a vortex, stabilizing the vortex. This stable vortex allows the sand and gravel to quickly and stably separate from the fluid and enter the sand collection cylinder, thereby improving the sand removal effect. In addition, the sand-containing fluid entering the sand removal cylinder first impacts the guide turbine and then the guide plates. This avoids the sand-containing fluid, which has a relatively high pressure when it first enters the sand removal cylinder, from impacting the sand removal cylinder, effectively reducing the wear of the sand and gravel on the inner wall of the sand removal cylinder.

[0026] 5. This invention can operate stably and reliably under extreme high-pressure environments up to 175MPa, which is a significant advantage in high-pressure conditions in industries such as oil and natural gas, avoiding equipment failure or poor sand removal efficiency due to excessive pressure. With its unique swirling structure and flat valve equipped with an electric actuator, it can quickly, promptly, and thoroughly separate sand and gravel from the fluid, greatly improving sand removal efficiency and providing strong protection for the safety and stability of the production process. The overall design is simple and clear, and each unit adopts a split skid-mounted base, which is not only easy to install but also greatly convenient in terms of maintenance. This reduces the cost of using the equipment and the difficulty of maintenance, improving the availability of the equipment. Through efficient sand removal, it reduces the wear of sand and gravel on downstream equipment, reduces energy consumption, extends the service life of the equipment, and reduces failures and repairs caused by sand and gravel, thus reducing energy waste and environmental pollution in the production process. This invention is applicable to different types of fluid media, such as oil, natural gas, and water, and can achieve excellent sand removal effects in various complex industrial environments. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 A schematic diagram of the cyclone sand separator and sand collection cylinder;

[0029] Figure 3 This is a schematic diagram of a cyclone separator.

[0030] Figure 4 This is a schematic diagram of the cross-sectional structure of a hydrocyclone sand separator;

[0031] Figure 5 This is a schematic diagram of the cross-sectional structure of the inner liner;

[0032] Figure 6 This is a schematic diagram of the internal structure of the inner liner;

[0033] Figure 7 This is a schematic diagram of the structure at the feed inlet;

[0034] Figure 8 This is a schematic diagram of the driver component structure;

[0035] Figure 9 This is a schematic diagram of the connection structure between the rotating shaft and the fixed shaft;

[0036] Figure 10 This is a schematic diagram of the guide plate structure.

[0037] In the picture:

[0038] 1. Sand removal cylinder; 2. Feed pipe; 3. Discharge pipe; 4. Sand collection cylinder; 5. Inner liner; 51. Cylinder section; 511. Flow channel one; 52. Tip section; 521. Through hole; 522. Flow channel two; 6. Filter assembly; 61. Filter cylinder; 62. Filter cover; 7. Feed inlet; 8. Drive assembly; 81. Guide turbine; 82. Rotating shaft; 821. Protrusion one; 822. Clamping block; 83. Transmission component; 84. Connecting plate; 85. Fixed shaft; 851. Protrusion two; 86. Elastic connector; 9. Cleaning assembly; 91. Drive turbine; 92. Cleaning brush; 10. Guide plate; 11. Diversion manifold; 12. Sand discharge manifold; 13. Sand flushing manifold. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] like Figures 1-7 As shown, a 175MPa hydrocyclone sand separator includes a sand separator cylinder 1, a feed pipe 2, a discharge pipe 3, and a sand collecting cylinder 4. The hydrocyclone sand separator also includes:

[0042] The inner container 5 is fixedly installed in the inner cavity of the sand removing cylinder 1, and includes a cylinder segment 51 and a pointed nozzle segment 52. The pointed nozzle segment 52 is close to the sand collecting cylinder 4. A through hole 521 is formed through the pointed nozzle segment 52. A flow channel I 511 is formed in the wall of the cylinder segment 51. A flow channel II 522 is formed in the wall of the pointed nozzle segment 52, and is staggered with the through hole 521. The flow channel II 522 is communicated with the flow channel I 511.

[0043] The filter assembly 6 includes a filter cylinder 61 and a filter cover 62. The filter cylinder 61 is sleeved between the discharge pipe 3 and the cylinder segment 51. The filter cover 62 is fixedly installed in the filter cylinder 61.

[0044] The driving assembly 8 is installed at the feeding port 7 which is connected with the feeding pipe 2. The driving assembly 8 is connected with the filter assembly 6 and drives the filter assembly 6 to shake.

[0045] The sand-containing fluid drives the fine sand into the inner container 5 through the through hole 521. The sand-containing fluid is discharged through the discharge pipe 3 after passing through the filter cover 62. The fine sand is filtered by the filter cover 62 and enters the flow channel I 511. Then, the fine sand is discharged into the sand collecting cylinder 4 through the flow channel II 522.

[0046] In actual application, the sand-containing fluid enters the desanding cylinder 1 tangentially, and due to the high pressure of the sand-containing fluid after entering the desanding cylinder 1 and the arc path of the inner wall of the desanding cylinder 1, the sand-containing fluid quickly forms a high-speed rotating cyclone. Due to the centrifugal force, the sand with a larger density is thrown to the outer periphery of the inner cavity of the desanding cylinder 1, thus forming an outer vortex flow field. The sand with a larger density slowly moves downward due to its own gravity and finally enters the sand collecting cylinder 4. The fluid with a smaller density drives the fine sand into the inner container 5 through the through hole 521 and moves upward along the inner container 5 to form an inner vortex flow field. The fluid passes through the filter cover 62 after moving upward and is finally discharged through the discharge pipe 3, while the fine sand is blocked by the filter cover 62 and slowly moves to the outside of the filter cover 62 due to the impact of the fluid, until it moves to the flow channel one 511. The fine sand enters the flow channel one 511 due to its own gravity and the impact of the fluid, and the sand in the flow channel one 511 is not affected by the fluid but moves downward along the flow channel one 511 and is discharged through the flow channel two 522. Since the flow channel two 522 is staggered with the through hole 521, the sand discharged from the flow channel two 522 is not affected by the upward moving fluid and finally enters the sand collecting cylinder 4 through the bottom of the desanding cylinder 1. Thus, the sand driven upward by the fluid can be finally discharged into the sand collecting cylinder 4, effectively avoiding the fine sand repeatedly moving up and down driven by the upward moving fluid, avoiding the repeated impact of the sand on the filter cover 62 and the sand blocked on the filter cover 62, thereby avoiding damage to the filter cover 62 and avoiding the sand blocked on the filter cover 62 from being more serious, avoiding the filter cover 62 from being seriously blocked, making the feed speed and discharge speed in the desanding cylinder 1 not much different, being relatively stable, thereby avoiding congestion in the desanding cylinder 1, and further improving the desanding effect.

[0047] The sand with a larger density slowly moves downward along the inner wall of the desanding cylinder 1 into the sand collecting cylinder 4 due to its own gravity, and the sand with a smaller density enters the sand collecting cylinder 4 through the flow channel one 511 and the flow channel two 522, so that the sand with a larger density and the sand with a smaller density are not affected when separating from the fluid, thereby further improving the desanding effect.

[0048] In addition, the feed pipe 2 is connected with the flow divider manifold 11, the sand collecting barrel 4 is connected with the sand discharge manifold 12 and the sand flushing manifold 13 respectively, and the sand and gravel can be discharged according to the storage amount of the sand and gravel; the 175MPa cyclone sand remover occupies a large area, in order to reduce the installation time and the transportation difficulty during use, a split pry base is adopted. Meanwhile, the flat valves on the connecting parts of all the pipes are equipped with electric actuators, and the separate control boxes on each pry can realize remote online control, which greatly reduces the difficulty of operation and saves labor. The main body of the cyclone sand remover, such as the sand removing barrel 1, the flange on the pipe connected with the sand removing barrel 1, the sand collecting barrel 4 and the flange on the pipe connected with the sand collecting barrel 4, is made of high-strength material and can withstand high pressure of 175MPa.

[0049] Further, the filter cover 62 is in the shape of an inverted cone, and the direction in which the inner side of the filter cover 62 inclines outward is towards the flow channel one 511.

[0050] In actual application, since the filter cover 62 is in the shape of an inverted cone, the sand and gravel blocked by the filter cover 62 can move towards the flow channel one 511 together with the impact of the fluid and enter the flow channel one 511, which can improve the sand removing effect and effectively prevent the sand and gravel from being blocked on the filter cover 62, so that the filter cover 62 can effectively intercept the sand and gravel while ensuring smoothness, further improving the sand removing effect.

[0051] In addition, part of the fluid will directly pass through the filter cylinder 61 and finally be discharged through the discharge pipe 3. After the fluid passes through the filter cylinder 61, part of the fluid will also pass through the filter cover 62 and finally be discharged through the discharge pipe 3 together with the fluid in the inner container 5. When part of the fluid passes through the filter cover 62, the fluid will flush the sand and gravel blocked on the filter cover 62, which can blow down the sand and gravel blocked on the filter cover 62 to a certain extent and enter the flow channel one 511, and also assist the sand and gravel to enter the flow channel one 511, which can improve the sand removing effect and effectively prevent the filter cover 62 from being blocked.

[0052] As shown in Figures 7-9 the drive assembly 8 comprises:

[0053] a guide turbine 81 rotatably installed at the feed port 7 of the sand removing barrel 1;

[0054] a rotating shaft 82 driving connected with the guide turbine 81 through a transmission member 83, and the guide turbine 81 drives the rotating shaft 82 to rotate through the transmission of the transmission member 83;

[0055] a fixed shaft 85 fixed at the top of the inner cavity of the sand removing barrel 1, and an elastic connecting member 86 is connected between the fixed shaft 85 and the rotating shaft 82;

[0056] The rotating shaft 82 is provided with a plurality of clamping blocks 822 in the periphery, the clamping blocks 822 are in sliding connection with the transmission member 83, so that the rotating shaft 82 moves up and down while rotating, the bottom end of the rotating shaft 82 is rotationally connected with a connecting plate 84, and the other end of the connecting plate 84 is fixedly connected with the filter cylinder 61.

[0057] In one case of the embodiment, the transmission member 83 can be a belt pulley and a belt, wherein the clamping blocks 822 slide relative to the belt pulley mounted on the rotating shaft 82, so that the rotating shaft 82 can move up and down while rotating, the transmission member 83 is externally provided with a shell, which can avoid the influence of the cyclone on the normal transmission of the transmission member 83; the elastic connecting member 86 can be an elastic telescopic rod, one end of the elastic connecting member 86 is fixed on the fixed shaft 85, and the other end is rotationally mounted on the rotating shaft 82, the elastic connecting member 86 makes the rotating shaft 82 have a tendency to always move upward.

[0058] In actual application, the sand-containing fluid entering the sand removal cylinder 1 through the feed inlet 7 will impact the guide turbine 81, so that the guide turbine 81 rapidly rotates, and the rotating shaft 82 rapidly rotates through the transmission member 83, because the filter assembly 6 has a certain weight, the filter assembly 6 drives the rotating shaft 82 to move downward through the connecting plate 84, the rotating shaft 82 is connected with the elastic connecting member 86, the elastic connecting member 86 is stretched, so that the rotating shaft 82, the connecting plate 84 and the filter assembly 6 move up and down, which can effectively avoid the blockage of the filter cover 62, and also can assist the sand and gravel to enter the flow passage one 511, thereby improving the sand removal effect; in addition, the filter assembly 6 moves up and down in cooperation with the impact of the fluid in the inner container 5 and the fluid passing through the filter cylinder 61, which can further make the sand and gravel blocked on the filter cover 62 fall down, thereby further avoiding the blockage of the filter cover 62.

[0059] Further, the top end of the rotating shaft 82 is provided with a protrusion one 821, the protrusion one 821 is located at the edge position of the top end of the rotating shaft 82, the bottom end of the fixed shaft 85 is provided with a protrusion two 851, the protrusion two 851 is located at the edge position of the bottom end of the fixed shaft 85, one side of the protrusion one 821 and the protrusion two 851 is an inclined surface, the inclined surface of the protrusion one 821 is opposite to the inclined surface of the protrusion two 851, that is, after the protrusion one 821 is rotated to a specific position by the rotating shaft 82, the inclined surface of the protrusion one 821 coincides with the inclined surface of the protrusion two 851.

[0060] In actual application, when the rotating shaft 82 rotates, the first protruding block 821 first rotates along the surface of the fixed shaft 85. When the first protruding block 821 slowly approaches the second protruding block 851, the first protruding block 821 slowly moves along the inclined surface of the second protruding block 851, so that the rotating shaft 82 moves downward while rotating, and the elastic connecting member 86 is stretched. When the first protruding block 821 moves off the inclined surface of the second protruding block 851, the rotating shaft 82 moves upward due to the resilience of the elastic connecting member 86. After the rotating shaft 82 rotates one circle, the rotating shaft 82 also completes the downward movement and then the upward movement, so that the filter assembly 6 completes the up-and-down movement through the connecting plate 84. The filter assembly 6 repeatedly moves up and down, and the filter assembly 6 shakes up and down, so as to effectively prevent the filter cover 62 from being blocked.

[0061] In addition, after the first protruding block 821 moves off the inclined surface of the second protruding block 851, the rotating shaft 82 moves upward due to the resilience of the elastic connecting member 86. When the rotating shaft 82 moves upward, the speed is relatively fast, so that the first protruding block 821 quickly abuts against the bottom of the fixed shaft 85. In this process, the first protruding block 821 vibrates when contacting the bottom of the fixed shaft 85, so that the filter assembly 6 intermittently vibrates, and the filter assembly 6 shakes up and down, so as to further effectively prevent the filter cover 62 from being blocked, and improve the sand removal effect.

[0062] Further, the inclined direction of the blades on the guide turbine 81 is downward.

[0063] In actual application, the sand-containing fluid entering the sand removal cylinder 1 through the feed inlet 7 impacts the guide turbine 81. Since the blades on the guide turbine 81 are inclined downward, the sand-containing fluid also flows downward after impacting the guide turbine 81. Combined with the circular arc path of the inner wall of the sand removal cylinder 1, the sand-containing fluid can quickly and stably form a rotational flow, so that the rotational flow is stable, the sand and gravel can be quickly and stably separated from the fluid and enter the sand collecting cylinder 4, and the sand removal effect is improved.

[0064] As shown in FIGS. Figure 4 and Figure 5 The cleaning assembly 9 is installed in the discharge pipe 3, and the cleaning assembly 9 includes a driving turbine 91 and a cleaning brush 92. The driving turbine 91 is installed in the discharge pipe 3 and is coaxial with the discharge pipe 3. One end of an output shaft of the driving turbine 91 is provided with the cleaning brush 92. The cleaning brush 92 is in a spade shape and is attached to the top surface of the filter cover 62.

[0065] The upwardly moving fluid is discharged through the discharge pipe 3 in actual application of the embodiment. Since the upwardly moving fluid is in a vortex state, the driving turbine 91 is also rotated, the driving turbine 91 drives the cleaning brush 92 to rotate, and the cleaning brush 92 sweeps the surface of the filter cover 62, so as to further avoid the filter cover 62 from being blocked and improve the sand removal effect; in addition, the output shaft of the driving turbine 91 is telescopic at the connecting part with the cleaning brush 92, so as to cooperate with the upward and downward movement of the filter assembly 6.

[0066] As shown in Figure 7 and Figure 10 A plurality of guide plates 10 are mounted on the inner wall of the sand removal cylinder 1, the plurality of guide plates 10 are in a spiral distribution state, the plurality of guide plates 10 are located at the feed inlet 7, the guide plates 10 are all elastically rotatably mounted on the inner wall of the sand removal cylinder 1, and the guide plates 10 have a tendency to always rotate downward.

[0067] In one case of the embodiment, the rotating part of the guide plate 10 is provided with an elastic member, which can be a torsion spring, so that the guide plate 10 has a tendency to always rotate downward.

[0068] In actual application of the embodiment, the sand-containing fluid entering the sand removal cylinder 1 through the feed inlet 7 first impacts the guide turbine 81, and then the sand-containing fluid will be in a spiral flow around the inner wall of the sand removal cylinder 1. When the sand-containing fluid is in a spiral flow, the sand-containing fluid will impact the guide plate 10. After continuous impact, the plurality of guide plates 10 will slowly form a guide spiral plate to guide the sand-containing fluid, so that the spiral flow of the sand-containing fluid is more stable. At the same time, the sand and gravel in the sand-containing fluid will impact the guide plate 10, and the sand and gravel with a relatively large density will be bounced away after impacting the guide plate 10, so that the sand and gravel with a relatively large density can be quickly separated from the fluid and move downward into the sand collecting cylinder 4, thereby improving the sand removal effect.

[0069] In addition, the sand-containing fluid entering the sand removal cylinder 1 first impacts the guide turbine 81 and then impacts the guide plate 10, so that the sand-containing fluid with a relatively large pressure just entering the sand removal cylinder 1 can avoid impacting the inner wall of the sand removal cylinder 1, and the abrasion of the sand and gravel to the inner wall of the sand removal cylinder 1 can be effectively reduced.

[0070] Working principle: in use, the sand-containing fluid enters into the desanding cylinder 1 tangentially, and due to the high pressure of the sand-containing fluid after entering into the desanding cylinder 1 and the arc path of the inner wall of the desanding cylinder 1, the sand-containing fluid forms a high-speed rotating cyclone, and due to the centrifugal force, the sand with a larger density is thrown to the outer periphery of the inner cavity of the desanding cylinder 1, thus forming an outer vortex flow field, and the sand with a larger density slowly moves downward due to its own gravity and finally enters into the sand collecting cylinder 4, and the fluid with a smaller density drives the fine sand into the inner container 5 through the through hole 521 and moves upward along the inner container 5 to form an inner vortex flow field, and the fluid moves upward and then passes through the filter cover 62 and is finally discharged through the discharge pipe 3, while the fine sand is blocked by the filter cover 62 and slowly moves to the outside of the filter cover 62 due to the impact of the fluid, until it moves to the flow channel one 511, and the fine sand enters into the flow channel one 511 due to its own gravity and the impact of the fluid, moves downward along the flow channel one 511, and is discharged through the flow channel two 522 and finally enters into the sand collecting cylinder 4 through the bottom of the desanding cylinder 1.

[0071] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A 175 MPa hydrocyclone desander comprising a desanding cylinder (1), a feed pipe (2), a discharge pipe (3) and a sand collection cylinder (4), characterized in that, The cyclone sand remover further comprises: an inner container (5) fixedly installed in the inner cavity of the sand removing cylinder (1), the inner container (5) comprising a cylinder segment (51) and a spout segment (52), the spout segment (52) being close to the sand collecting cylinder (4), a through hole (521) being formed through the spout segment (52), a flow passage one (511) being formed in the wall of the cylinder segment (51), a flow passage two (522) being formed in the wall of the spout segment (52), the flow passage two (522) being staggered with the through hole (521), and the flow passage two (522) being communicated with the flow passage one (511); a filtering assembly (6) comprising a filtering cylinder (61) and a filtering cover (62), the filtering cylinder (61) being sleeved between the discharge pipe (3) and the cylinder segment (51), and the filtering cover (62) being fixed in the filtering cylinder (61); a driving assembly (8), a feeding port (7) being formed in the sand removing cylinder (1) and connected with the feeding pipe (2), the driving assembly (8) being installed at the feeding port (7) and connected with the filtering assembly (6) to drive the filtering assembly (6) to shake; the driving assembly (8) comprising: a guide turbine (81) rotatably installed at the feeding port (7) of the sand removing cylinder (1); a rotating shaft (82) drivingly connected with the guide turbine (81) through a transmission member (83), the guide turbine (81) driving the rotating shaft (82) to rotate through the transmission of the transmission member (83); a fixed shaft (85) fixed at the top of the inner cavity of the sand removing cylinder (1), the fixed shaft (85) and the rotating shaft (82) being connected with an elastic connecting member (86); the rotating shaft (82) being provided with a plurality of clamping blocks (822) at the periphery, the clamping blocks (822) being slidingly connected with the transmission member (83) to enable the rotating shaft (82) to move up and down while rotating, the rotating shaft (82) being rotatably connected with a connecting plate (84) at the bottom end, the other end of the connecting plate (84) being fixedly connected with the filtering cylinder (61); the rotating shaft (82) being provided with a protrusion one (821) at the top end, the protrusion one (821) being located at the edge of the top end of the rotating shaft (82), the fixed shaft (85) being provided with a protrusion two (851) at the bottom end, the protrusion two (851) being located at the edge of the bottom end of the fixed shaft (85), one side of each of the protrusion one (821) and the protrusion two (851) being an inclined surface, the inclined surface of the protrusion one (821) being opposite to the inclined surface of the protrusion two (851), that is, after the protrusion one (821) is driven by the rotating shaft (82) to rotate to a specific position, the inclined surface of the protrusion one (821) coincides with the inclined surface of the protrusion two (851); the sand-containing fluid driving the fine sand to enter the inner container (5) from the through hole (521), the sand-containing fluid passing through the filtering cover (62) and being discharged through the discharge pipe (3), the fine sand being filtered by the filtering cover (62) and entering the flow passage one (511), and then being discharged into the sand collecting cylinder (4) through the flow passage two (522).

2. The 175 MPa hydrocyclone desander of claim 1, wherein, The filter cover (62) is conical, and the inner side of the filter cover (62) is inclined outwardly towards the flow channel (511).

3. The 175 MPa hydrocyclone desander of claim 1, wherein, The inclined direction of the blades on the guide turbine (81) is downward.

4. The 175 MPa hydrocyclone desander of claim 1, wherein, The cleaning assembly (9) is installed in the discharge pipe (3), the cleaning assembly (9) comprises a driving turbine (91) and a cleaning brush (92), the driving turbine (91) is installed in the discharge pipe (3), the driving turbine (91) is coaxial with the discharge pipe (3), one end of the output shaft of the driving turbine (91) is provided with the cleaning brush (92), the cleaning brush (92) is in the shape of a splayed end, and the cleaning brush (92) is attached to the top surface of the filter cover (62). A plurality of guide plates (10) are installed on the inner wall of the sand removing cylinder (1), the plurality of guide plates (10) are in a spiral distribution state, the plurality of guide plates (10) are located at the feeding port (7), the guide plates (10) are elastically rotatably installed on the inner wall of the sand removing cylinder (1), and the guide plates (10) have a tendency to always rotate downward.

5. The 175 MPa hydrocyclone desander of claim 1, wherein, ​

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