Cyclone desander with filter cartridge

Abstract

The invention relates to the technical field of fluid separation equipment, in particular to a cyclone desander with a filter cartridge, which comprises a cyclone desander main body which is respectively communicated with each pipeline system; the pipeline system comprises a straight-through pipeline system, a desanding pipeline system, a desanding-filtering pipeline system, a sand discharging pipeline system and an emptying pipeline system. The straight-through pipeline system is directly communicated between the inflow pipe and the outflow pipe; the desanding pipeline system is communicated with the cyclone desander main body through a conveying pipe, the bottom of the cyclone desander main body is communicated with the sand storage cylinder, and the top of the cyclone desander main body is communicated with the outflow pipe; the desanding-filtering pipeline system is communicated with a cyclone desander through a conveying pipe, the top of a cyclone desander main body is communicated with a filter cartridge, and the filter cartridge is communicated with an outflow pipe. A sand discharging pipeline system is further arranged on the sand storage cylinder and the filter cylinder; and an emptying pipeline system is also arranged in the pipeline system. According to the invention, rapid and repeated desanding and filtering of a gas-liquid mixture are realized, and the separation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid separation equipment, in particular to a cyclone desander with a filter cartridge. Background Art

[0002] A cyclone desander is a device used for water treatment and solid-liquid separation, and is widely used in industries such as mining, chemical engineering, wastewater treatment, and oil and gas. Its working principle is to introduce a liquid containing solid particles into the device through a cyclone, where the centrifugal force separates the solid particles, achieving solid-liquid separation.

[0003] However, existing cyclone desanders are less effective at separating smaller particles and are generally more suitable for separating larger, heavier particles. Smaller particles may be discharged with the water flow, making them difficult to completely separate, leading to secondary contamination and reduced separation efficiency and quality. Furthermore, the separation performance of cyclone desanders is affected by the viscosity, density, and flow characteristics of the liquid. Cyclone desanders are more suitable for separating solid-liquid mixtures. When it comes to desanding gas-liquid mixtures, the lighter gas makes it difficult to separate fine floating impurities through centrifugal force, resulting in certain limitations. Summary of the Invention

[0004] The purpose of this application is to provide a cyclone desander with a filter cartridge to achieve rapid multiple desanding and filtration of a gas-liquid mixture and improve the technical problem of separation efficiency.

[0005] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0006] A cyclone desander with a filter cartridge comprises a cyclone desander main body.

[0007] Preferably, the cyclone desander body is connected to the inlet pipe, the sand storage cylinder, the filter cylinder and the outlet pipe through a pipeline system.

[0008] Preferably, the pipeline system includes a straight-through pipeline system, a sand removal pipeline system, a sand removal-filtration pipeline system, a sand discharge pipeline system, and a venting pipeline system.

[0009] Preferably, the straight-through pipeline system includes a straight-through gate valve and a delivery pipe, and the straight-through gate valve is arranged on the delivery pipe connected between the inlet pipe and the outlet pipe.

[0010] Preferably, the desander piping system is as follows: the inlet pipe is connected to the top of the cyclone desander body through a delivery pipe, the bottom of the cyclone desander body is connected to the sand storage cylinder, and the top overflow port of the cyclone desander body is connected to the outlet pipe through a delivery pipe.

[0011] Preferably, the sand removal-filtration pipeline system is as follows: the inlet pipe is connected to the top of the cyclone desander body through a delivery pipe, the bottom of the cyclone desander body is connected to the sand storage cylinder, the top overflow port of the cyclone desander body is connected to the outlet pipe through a delivery pipe, and a filter cartridge is provided on the delivery pipe between the overflow port and the outlet pipe.

[0012] Preferably, the sand storage cylinder and the filter cylinder are respectively provided with a sand discharge pipeline system.

[0013] Preferably, the cyclone desander body, the sand storage cylinder and the filter cylinder are connected to each other and are provided with a venting pipeline system.

[0014] Preferably, the sand discharge pipeline system of the sand storage cylinder is as follows: a water flushing port is connected on the cylinder wall of the sand storage cylinder, the water flushing port is connected to an external pump water pipe, and a sand discharge port is connected at the cylinder bottom of the sand storage cylinder.

[0015] Preferably, the sand discharge piping system on the filter cartridge is as follows: a water flushing port is connected on the cartridge wall of the filter cartridge, the water flushing port is connected to an external pump water pipe, and a sand discharge port is connected at the cartridge bottom of the filter cartridge.

[0016] Preferably, the venting pipeline system is as follows: the filter cylinder and the sand storage cylinder are both provided with an air outlet, the two air outlets are connected through a delivery pipe, the top of the sand storage cylinder is connected to the interior of the cyclone sand remover body, the delivery pipe is connected to one end of the valve connected to the second gate valve, and the other end of the valve connected to the second gate valve is connected to the exhaust pipe outlet.

[0017] Preferably, the sand discharge pipeline system of the sand storage cylinder includes a flushing gate valve 1 and a flushing gate valve 2.

[0018] Preferably, the upper and lower parts of the sand storage cylinder are respectively connected to a flushing port, the upper flushing port is connected to a flushing gate valve 1, and the lower flushing port is connected to a flushing gate valve 2. Both flushing ports are connected to an external water pump pipe, and the flushing gate valve 1 and the flushing gate valve 2 are both located between the flushing port and the external water pump pipe.

[0019] Preferably, the filter cartridge is provided with two filter outlets, which are respectively located at the upper part and the lower part of the filter cartridge, and the two filter outlets are connected to the same delivery pipe, which is connected to the outflow pipe.

[0020] Preferably, the filter cartridge includes a cylinder body, a filter cavity is provided inside the cylinder body, the upper end of the cylinder body is connected to the filter inlet, and a filter screen cartridge is fixedly provided in the filter cavity, the cylinder wall of the filter screen cartridge is provided with a filter screen, the top end of the filter screen cartridge is a through opening, and the filter inlet is connected to the through opening at the top end of the filter screen cartridge.

[0021] Preferably, the upper and lower parts of the cylinder wall of the cylinder body are respectively penetrated with two filter outlets, and are respectively located at the upper and lower parts of the filter cylinder in the filter cavity.

[0022] Preferably, the upper portion of the cylinder is further provided with a vent, which is located in the filter cavity and above the filter cylinder, and is respectively connected to the delivery pipe outside the filter outlet and the filter cavity.

[0023] Preferably, a gas filter is also provided at the vent.

[0024] Preferably, the gas filter element includes a mounting cylinder and a filter element.

[0025] Preferably, the mounting cylinder is fixed in the vent, and a filter element is installed on the inner thread of the mounting cylinder, and the filter pore diameter of the filter element is smaller than the filter pore diameter of the filter screen on the filter screen cylinder.

[0026] Preferably, the top of the cyclone desander body is connected to two inlet pipes through a delivery pipe, and the overflow port at the top of the cyclone desander body is connected to two outlet pipes through a delivery pipe, and the inlet pipes and the outlet pipes are connected in parallel.

[0027] Preferably, the inlet pipe, the DC gate valve and the outlet pipe are sequentially connected in series.

[0028] Preferably, both the sand discharge pipeline system and the vent pipeline system are provided with throttle valves.

[0029] Preferably, in the sand discharge pipeline system, a throttle valve is arranged in communication with the sand discharge port.

[0030] Preferably, in the venting pipeline system, the throttle valve is connected and arranged on the delivery pipe connected to the second gate valve and the exhaust pipe port.

[0031] The technical solution of this application has at least the following advantages and beneficial effects:

[0032] In the present invention, a straight-through piping system, a sand removal piping system, and a sand removal-filtration piping system are provided to connect the cyclone desander body, the sand storage cylinder, and the filter cylinder respectively, thereby rapidly removing sand from the gas-liquid mixture under different impurity contents, as follows:

[0033] For a gas-liquid mixture without impurities, under normal working conditions, the gas-liquid mixture passes directly and quickly through the inlet pipe-straight-through piping system-outlet pipe in sequence;

[0034] For a gas-liquid mixture with less impurities, under normal working conditions, the gas-liquid mixture passes through the inlet pipe-cyclone desander-outlet pipe (desanding pipeline system) in sequence, and only the cyclone desander is used for rapid desanding.

[0035] For gas-liquid mixtures with more impurities, which are harsh working conditions, the liquid mixture passes through the inlet pipe-cyclone desander-filter cartridge-outlet pipe (sand removal-filtration pipeline system) in sequence, and undergoes multiple filtration and sand removal operations through the cyclone desander and filter cartridge to ensure the desanding efficiency and quality of the gas-liquid mixture with more impurities.

[0036] In the present invention, a sand discharge piping system is provided on the sand storage cylinder and the filter cylinder, that is, special flushing ports and sand discharge ports are provided on the sand removal cylinder and the filter cylinder. During the sand discharge process, an external water pump pipe is connected to the flushing port, and water is flushed into the sand storage cylinder and the filter cylinder to flush impurities. Then, water flows into the sand discharge port along with the water flow and is discharged to the outside through the sand discharge piping system, thereby realizing sand discharge and cleaning in the sand storage cylinder and the filter cylinder.

[0037] In the present invention, air outlets are respectively provided on the cyclone desander body, the sand storage cylinder and the filter cylinder, and the three air outlets are commonly connected to the vent pipe system, so that they are all connected to the exhaust pipe port for exhaust work. Therefore, after the equipment stops working, the gate valves connected to each device are in a closed state, and the residual pressure inside the equipment is vented.

[0038] In the present invention, by arranging filter outlets at the upper and lower parts of the filter cartridge respectively, after the gas-liquid mixture accumulated inside the filter cartridge is stratified, the gas located at the upper part of the filter cartridge and the liquid located at the lower part of the filter cartridge are both filtered and discharged of impurities.

[0039] In the present invention, an air vent is provided on the upper part of the filter cartridge, and a gas filter with a smaller pore size is provided in the air vent. Therefore, in the process of filtering the gas out of the filter cartridge, the gas flow rate at the filter outlet is large, so that most of the gas is discharged from the upper filter outlet and a small part is discharged from the air vent. Since the air vent is located outside the filter screen cartridge, the gas entering the filter cavity and exiting the air vent has been filtered by the filter screen of the filter screen cartridge. When the filtered gas passes through the filter element of the air vent, it can avoid impurities from starting to clog the filter element with a small pore size. When the filter screen at the filter outlet is clogged, the two ends of the filter outlet can still be connected to balance the pressure difference inside and outside the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the axonometric structure of the present invention in the M direction.

[0041] Figure 2 It is a schematic diagram of the structure of the present invention viewed from the right side in the M direction.

[0042] Figure 3 It is a schematic diagram of the rear view structure of the present invention in the M direction.

[0043] Figure 4 It is a schematic cross-sectional structural diagram of the filter cartridge in the present invention.

[0044] Figure 5 It is a schematic cross-sectional structural diagram of the gas filter element in the present invention.

[0045] Figure 6 Schematic diagram of the structure of the gas filter element of the present invention.

[0046] In the figure: 1-inlet pipe, 2-straight gate valve, 3-outlet pipe, 4-main gate valve 1, 5-delivery pipe, 6-cyclone desander body, 7-sand gate valve, 8-sand storage cylinder, 9-overflow pipe, 10-sand removal gate valve, 11-main gate valve 2, 12-filter inlet gate valve, 13-filter cylinder, 131-cylinder, 132-filter chamber, 133-filter screen, 134-filter outlet, 135-gas outlet, 136-exhaust Water outlet, 14-filter outlet gate valve, 15-flushing gate valve one, 16-flushing gate valve two, 17-sand discharge gate valve, 18-sand discharge pipe outlet, 19-vent gate valve, 191-ventilation direct current pipe, 192-pressurized air flow pipe, 20-flushing gate valve three, 21-connecting gate valve one, 22-connecting gate valve two, 23-exhaust pipe outlet, 24-throttle valve, 25-gas filter, 251-installation cylinder, 252-filter element. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0048] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. Terms such as "center," "upper," "lower," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the figures, or the positions or locations in which the product is typically placed when in use. These terms are used solely for ease of description and simplification of the present application. They do not indicate or imply that the device or component referred to must have a specific position, be constructed, or operate in a specific orientation, and are not to be construed as limiting the present application. It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections or indirect connections through an intermediary; or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application in specific contexts.

[0049] In existing technology, cyclone desanders use centrifugal force to achieve solid-liquid separation. Liquid enters the cylindrical cone-shaped centrifugal chamber at high speed from a tangential feed port. Driven by the rotation of the internal cyclone, a rotating flow is formed. Dense particles (such as sand and metal chips) are flung toward the wall by centrifugal force, sliding down the cone to the bottom outlet. The purified liquid is then discharged from the top of the centrifugal chamber through a central overflow pipe. This process is similar to the dehydration process in a washing machine, where heavy objects are separated by rotation.

[0050] Example

[0051] Please refer to Figures 1-6 The present invention provides a cyclone desander with a filter cartridge, comprising an inlet pipe 1, an outlet pipe 3, a cyclone desander body 6, a sand storage cartridge 8, a filter cartridge 13, a straight-through pipeline system, a desanding pipeline system, a desanding-filtering pipeline system, a sand discharge pipeline system, and a venting pipeline system.

[0052] Furthermore, in the process of transporting a gas-liquid mixture without impurities, the flow route of the gas-liquid mixture is the inlet pipe 1-straight-through pipeline system-outlet pipe 3. The straight-through pipeline system includes a straight-through gate valve 2. The straight-through gate valve 2 is fixedly arranged in the pipelines of the inlet pipe 1 and the outlet pipe 3 to control the gas-liquid mixture to flow directly out of the pipeline.

[0053] Furthermore, in the process of transporting a gas-liquid mixture with fewer impurities, the flow route of the gas-liquid mixture is to enter the inlet pipe 1, and then enter the cyclone desander main body 6 for desanding through the desanding pipeline system connected to the inlet pipe 1, and the selected sand and gravel are discharged into the sand storage cylinder 8. The gas-liquid mixture after desanding enters the desanding pipeline system from the overflow port, and then flows out to the outlet pipe 3, so that only the cyclone desander main body 6 is used to remove fewer impurities in the gas-liquid mixture.

[0054] During this process, the through gate valve 2 in the through pipeline system is in a closed state and is not connected, so that the gas-liquid mixture only passes through the sand removal pipeline system.

[0055] Among them, please refer to Figure 1 In this embodiment, the sand removal pipeline system includes a main gate valve 4, a delivery pipe 5, a sand gate valve 7, an overflow pipe 9, a sand removal gate valve 10, and a main gate valve 11.

[0056] Specifically, a main gate valve 4 is provided on the inlet pipe 1, which is connected to one end of the delivery pipe 5, and the other end of the delivery pipe 5 is connected to the top of the cyclone desander main body 6. When the main gate valve 4 is opened, the gas-liquid mixture flows into the cyclone desander main body 6, and the cyclone desander main body 6 drives the gas-liquid mixture to rotate, and the impurities inside the gas-liquid mixture are separated to the bottom of the cyclone desander main body 6. The gas-liquid mixture after desanding is always above the cyclone desander main body 6 due to the centrifugal effect.

[0057] Specifically, the bottom sand discharge port of the cyclone desander main body 6 is connected to the sand gate valve 7, and the sand storage cylinder 8 is connected below the sand removal gate valve 10. When the sand gate valve 7 is opened, the separated impurities are discharged into the sand storage cylinder 8 for storage; the top overflow port of the cyclone desander main body 6 is connected to the overflow pipe 9, and the excess gas-liquid mixture above the cyclone desander main body 6 will overflow from the overflow port into the overflow pipe 9 and continue to circulate (wherein, the gas is light in weight, so it will directly flow into the overflow pipe 9 at the top of the cyclone desander main body 6).

[0058] Specifically, the overflow pipe 9 is connected to two sections of the delivery pipe 5, one of which is connected to the desanding gate valve 10 (the other section of the delivery pipe 5 belongs to the desanding-filtration pipeline system, and is in a closed state through the gate valve at this time and does not circulate), and the end of the delivery pipe 5 is connected to the main gate valve 2 11, and the main gate valve 2 11 is connected and arranged on the outlet pipe 3; open the desanding gate valve 10 and the main gate valve 2 11, and the gas-liquid mixture after desanding flows directly from the overflow pipe 9 to the outlet pipe 3 to flow out, thereby realizing rapid desanding of the gas-liquid mixture with less impurities.

[0059] Furthermore, in the process of transporting a gas-liquid mixture with more impurities, the flow route of the gas-liquid mixture is to enter the inlet pipe 1, and then enter the cyclone desander main body 6 through the sand removal-filtration pipeline system connected to the inlet pipe 1 to remove sand (remove larger impurities), and the selected sand and gravel are discharged into the sand storage cylinder 8. The gas-liquid mixture after desanding flows out from the overflow port (enters another section of the conveying pipe 5 that is not connected to the desanding gate valve 10), and then enters the filter cartridge 13 to filter finer impurities, and then flows from the filter cartridge 13 to the outlet pipe 3 to flow out, thereby utilizing the cyclone desander main body 6 to remove large and numerous impurities in the gas-liquid mixture, and then utilizing the filter cartridge 13 to filter finer impurities in the gas-liquid mixture, and through double desanding and filtration, more impurities in the gas-liquid mixture are quickly removed.

[0060] During this process, the through gate valve 2 in the through pipeline system is in a closed state and is not connected; the desanding gate valve 10 in the desanding pipeline system is in a closed state and is not connected.

[0061] Among them, please refer to Figure 1 and Figure 2 In this embodiment, the sand removal-filtration pipeline system includes a main gate valve 1 4, a delivery pipe 5, a sand gate valve 7, an overflow pipe 9, a main gate valve 2 11, a filter inlet gate valve 12, and a filter outlet gate valve 14.

[0062] Specifically, the main gate valve 4, the delivery pipe 5, the cyclone desander main body 6, the sand gate valve 7, the sand storage cylinder 8, and the overflow pipe 9 belong to the piping system shared by the desanding piping system and the desanding-filtration piping system. Regardless of the amount of impurities, the gas-liquid mixture must pass through the main gate valve 4 from the inlet pipe 1, and then be desanded by the cyclone desander main body 6 before flowing into the overflow pipe 9.

[0063] Specifically, in the process of transporting a gas-liquid mixture with more impurities, the gas-liquid mixture after sand removal is passed into the overflow pipe 9, which is connected to two sections of the delivery pipe 5, one of which is connected to the filter inlet gate valve 12 (the other section of the delivery pipe 5 belongs to the filter pipeline system, and the sand removal gate valve 10 on the delivery pipe 5 is in a closed state and does not circulate), and the filter inlet gate valve 12 is connected to the inlet of the filter cartridge 13. When the filter inlet gate valve 12 is opened, the gas-liquid mixture after sand removal is passed into the filter cartridge 13 for filtration, and the impurities are filtered out. The clean gas-liquid mixture after filtration flows out from the outlet of the filter cartridge 13. The outlet of the filter cartridge 13 is connected with a filter outlet gate valve 14. The filter outlet gate valve 14 is connected with one end of a section of the delivery pipe 5. The other end of the section of the delivery pipe 5 is connected with the main gate valve 2 11. The main gate valve 2 11 is connected with the outlet pipe 3. Open the filter outlet gate valve 14 and the main gate valve 2 11, and the gas-liquid mixture after filtration in the filter cartridge 13 flows to the outlet pipe 3 and flows out, thereby realizing the rapid desanding and filtration of the gas-liquid mixture with more impurities.

[0064] Preferably, in this embodiment, for different conveying conditions of the gas-liquid mixture, i.e., conventional conditions with no impurities or few impurities, and severe conditions with more impurities, the cyclone desander and the filter cartridge 13 work in coordination. For conventional conditions, only the cyclone desander main body 6 is used to separate impurities, thereby achieving rapid desanding of the gas-liquid mixture with fewer impurities; for severe conditions, the cyclone desander main body 6 is used to separate more large-particle impurities, thereby reducing the risk of blockage of the desanding pipeline, and then the filter cartridge 13 is used to filter fewer fine impurities, thereby removing impurities that the cyclone desander main body 6 has failed to remove in time, thereby achieving rapid desanding of the gas-liquid mixture with more impurities.

[0065] After the cyclone desander and the filter cartridge 13 have been running for a period of time, a large amount of impurities will accumulate in the sand storage cartridge 8 and the filter cartridge 13. In order to prevent the impurities from affecting the normal desanding work of the equipment, water must be injected into the desander and the filter cartridge 13 to flush the impurities inside the sand storage cartridge and discharge them together.

[0066] Furthermore, a sand discharge piping system is provided on the sand storage cylinder 8 and the filter cylinder 13, and special water flushing ports and sand discharge ports are provided on the sand removal cylinder and the filter cylinder 13, and the sand discharge ports are connected to the sand discharge piping system; during the sand discharge process, the external pump water pipe is connected to the water flushing port, and water is flushed into the sand storage cylinder 8 and the filter cylinder 13 to flush impurities, and then follows the water flow into the sand discharge port and is discharged to the outside from the sand discharge piping system, thereby realizing sand discharge and cleaning in the sand storage cylinder 8 and the filter cylinder 13.

[0067] During the sand removal process, all gate valves in the straight-through pipeline system, the sand removal pipeline system and the sand removal-filtration pipeline system are in a closed state, that is, the entire device does not remove the sand of the gas-liquid mixture and does not work.

[0068] Among them, the sand discharge pipeline system includes a flushing gate valve 15, a conveying pipe 5, a sand discharge gate valve 17, a sand discharge pipe port 18, and a flushing gate valve 3 20.

[0069] Specifically, please refer to Figure 1 and Figure 3 In this embodiment, the sand discharge pipeline system on the sand storage cylinder 8 is as follows: a flushing port is connected on the wall of the sand storage cylinder 8, and a flushing gate valve 15 is provided for the flushing port. When the flushing gate valve 15 is opened, the external pump water pipe is threadedly locked and connected to the flushing port, and water is flushed into the sand storage cylinder 8 to flush the sand and gravel inside the sand storage cylinder 8 and mix them with the water flow; a sand discharge port is connected at the bottom of the sand storage cylinder 8, and the sand discharge port is connected to one end of a delivery pipe 5. A sand discharge gate valve 17 is provided on the delivery pipe 5, and the other end of the delivery pipe 5 is connected to a sand discharge pipe port 18. When the sand discharge valve is opened, the water and impurity mixture in the sand storage cylinder 8 flows out from the sand discharge port, and then is discharged to the outside from the sand discharge pipe port 18, thereby realizing the sand discharge work of the sand storage cylinder 8.

[0070] Specifically, please refer to Figure 2 and Figure 3 In this embodiment, the sand discharge piping system on the filter cartridge 13 is as follows: a flushing port is connected on the wall of the filter cartridge 13, and a flushing gate valve 20 is provided for connecting the flushing hole. When the flushing gate valve 20 is opened, the external pump water pipe is threadedly locked and connected to the flushing port, and water is flushed into the filter cartridge 13 to flush the sand and gravel inside the filter cartridge 13 and mix them with the water flow; a sand discharge port is connected at the bottom of the filter cartridge 13, and the sand discharge port is connected to one end of a delivery pipe 5. A sand discharge gate valve 17 is provided on the delivery pipe 5, and the other end of the delivery pipe 5 is connected to a sand discharge pipe port 18. When the sand discharge valve is opened, the water and impurity mixture in the filter cartridge 13 flows out from the sand discharge port and is then discharged to the outside from the sand discharge pipe port 18, thereby realizing the sand discharge work of the filter cartridge 13.

[0071] It is worth noting that the sand discharge piping systems provided on the sand storage cylinder 8 and the filter cylinder 13 are independent piping systems, which are not connected and perform sand discharge work separately to avoid the cross-flow of water impurity mixture in the two cylinders and affect sand discharge.

[0072] During the long-term sand removal operation of the cyclone desander main body 6 and the filter cartridge 13, the gas-liquid mixture is pumped into the inlet pipe 1 by an external pumping device, performs sand removal through various pipeline systems, and then flows out from the outlet pipe 3. Therefore, there is pump pressure in the delivery pipe 5 in the entire pipeline system. When the entire equipment stops working, all gate valves in the straight pipeline system, the sand removal pipeline system and the sand removal-filtration pipeline system are in a closed state. Therefore, the interior of the cyclone desander main body 6, the sand storage cylinder 8 and the filter cartridge 13 connected by the delivery pipe 5 all have residual pump pressure (the air pressure or water pressure generated by the residual gas-liquid mixture inside). In order to ensure the safety of the equipment and prevent it from being damaged by long-term pressure, it is necessary to vent the residual pressure in the equipment. However, after the equipment stops working, the interior of the cyclone desander main body 6, the sand storage cylinder 8 and the filter cartridge 13 cannot be discharged through the existing valves. Therefore, a separate venting pipeline system is provided on them to perform independent pressure venting.

[0073] Furthermore, air outlets are respectively provided on the cyclone desander main body 6, the sand storage cylinder 8 and the filter cylinder 13, and the three air outlets are commonly connected to a venting pipeline system for exhausting air; when the equipment is performing the desanding work of the gas-liquid mixture, the venting pipeline system is in a closed state and is not connected, thereby avoiding communication between the cyclone desander main body 6, the sand storage cylinder 8 and the filter cylinder 13.

[0074] Among them, please refer to Figure 2 and Figure 3 In this embodiment, the venting pipeline system includes a connecting gate valve 1 21, a sand valve gate, a conveying pipe 5, a connecting gate valve 2 22, and an exhaust pipe port 23.

[0075] Specifically, an air outlet is provided on the filter cartridge 13, and a connecting gate valve 1 21 is fixedly provided on the air outlet. The connecting gate valve 1 21 is connected to one end of a section of the delivery pipe 5, and the other end of the delivery pipe 5 is connected to a connecting gate valve 2 22. The connecting gate valve 2 22 is fixedly connected to the air outlet provided on the sand storage cylinder 8; by opening the connecting gate valve 1 21 and the connecting gate valve 2 22, the space inside the filter cartridge 13 and the sand storage cylinder 8 can be connected for ventilation; and a sand gate valve 7 is provided between the bottom of the cyclone desander body 6 and the top of the sand storage cylinder 8. Opening the sand-passing gate valve 7 connects the space inside the cyclone desander main body 6 and the sand storage cylinder 8; the connecting gate valve 2 22 is also connected to another section of the delivery pipe 5, and the end of the other section of the delivery pipe 5 is connected to the exhaust pipe port 23; during the exhaust and venting process, the connecting gate valve 1 21, the connecting gate valve 2 22 and the sand-passing gate valve 7 are opened, and the pressurized gas in the filter cartridge 13, the cyclone desander main body 6 and the sand storage cylinder 8 enters the exhaust pipe port 23 through the connecting gate valve 2 22 and is discharged to the outside, ensuring that the internal space pressure is normal after it stops working.

[0076] It is worth noting that when the equipment is performing sand removal work on the gas-liquid mixture, the connecting gate valve 1 21 and the connecting gate valve 2 22 are closed to prevent the sand storage cylinder 8 from being connected to the filter cylinder 13 and the exhaust pipe. The sand gate valve 7 is opened to connect the cyclone desander body 6 and the sand storage cylinder 8 to store the separated impurities.

[0077] Example 2

[0078] Because the device is used to remove sand and filter gas-liquid mixtures, the pumped gas is also mixed with tiny floating impurities. After the gas-liquid mixture is pumped into the filter cartridge 13, the filter cartridge 13 filters it by pumping pressure. However, when the gas-liquid mixture passes through the small-pore filter 133 in the filter cartridge 13, the flow rate slows down, and the gas-liquid mixture inside begins to stagnate. Therefore, under gravity, gas-liquid stratification gradually begins to occur, with the lighter gas located in the upper part of the filter cartridge 13 and the heavier liquid located in the lower part of the filter cartridge 13. At this time, the filter cartridge 13 needs to filter the impurities in the stratified gas and liquid at the same time to achieve impurity filtration of the entire gas-liquid mixture.

[0079] Therefore, please refer to Figure 2 In this embodiment, the filter cartridge 13 is provided with two filter outlets 134 , which are located at the upper part and the lower part of the filter cartridge 13 respectively.

[0080] Among them, the filter outlet 134 at the lower part of the filter cartridge 13 is connected to the delivery pipe 5 equipped with a flushing gate valve 3 20, and the delivery pipe 5 is directly connected to the main gate valve 2 11; when the gas-liquid mixture is desanded through the sand removal-filtration pipeline system, the flushing gate valve 3 20 is opened, and the stratified liquid in the filter cartridge 13 is filtered through the filter mesh 133, and then enters the main gate valve 2 11 from the pipeline equipped with the flushing gate valve 3 20, and flows out from the outlet pipe 3 connected to the main gate valve 2 11, thereby realizing the filtration of the liquid.

[0081] Among them, the filter outlet 134 on the upper part of the filter cartridge 13 is connected to the delivery pipe 5 provided with a vent valve gate, and the delivery pipe 5 is connected to the delivery pipe 5 provided with the filter outlet gate valve 14, and thus connected to the main gate valve 2 11; when the gas-liquid mixture passes through the sand removal-filtration pipeline system for sand removal, the vent valve 19 is opened, and the stratified gas in the filter cartridge 13 is filtered through the filter mesh 133, and then passes from the pipeline provided with the vent valve 19 into the delivery pipe 5 of the filter outlet gate valve 14, and then is discharged from the outlet pipe 3 at the connected main gate valve 2 11, thereby realizing gas filtration.

[0082] It is worth noting that the gas and liquid after stratification in the filter cartridge 13 are filtered and then successively merged into the delivery pipe 5 provided with the main gate valve 2 11 to mix, forming a gas-liquid mixture that flows out from the outlet pipe 3.

[0083] It is worth noting that, in this embodiment, the flushing gate valve three 20 works as a gate valve in the sand removal-filtration pipeline system and also works as a gate valve in the sand discharge pipeline system. In both working processes, the flushing gate valve three 20 is in an open state.

[0084] Example 3

[0085] Please refer to Figure 4 In this embodiment, the filter cartridge 13 includes a cartridge body 131 , a filter cavity 132 , a filter screen 133 , a filter outlet 134 , a gas outlet 135 , and a drainage outlet 136 .

[0086] Specifically, a filter chamber 132 is provided inside the cylinder 131, and the upper end of the cylinder 131 is connected to the delivery pipe 5 provided with a filter inlet gate valve 12, so that the gas-liquid mixture passes into the interior from the top of the cylinder 131; and a filter screen 133 is fixedly provided in the filter chamber 132, and the cylinder wall of the filter screen 133 is provided with a filter screen 133, and the top of the filter screen 133 is a through opening, and the shape of the filter screen 133 matches the filter chamber 132, so that the gas-liquid mixture entering the cylinder 131 is directly passed into the through opening at the top of the filter screen 133, and enters the filter screen 133 from the through opening at the top of the filter screen 133, and then is filtered by the filter screen 133, and impurities remain in the filter screen 133, and the filtered gas-liquid mixture is discharged from the filter screen 133, thereby realizing impurity filtration.

[0087] Specifically, two filter outlets 134 are respectively passed through the upper and lower parts of the cylinder wall of the cylinder body 131. The filter outlets 134 are connected to the filter chamber 132 and are respectively located at the upper and lower parts of the filter screen 133 in the filter chamber 132, so that the gas and liquid after stratification in the filter screen 133 are filtered respectively and transported to the ventilation valve 19 and the flushing valve 20 respectively connected to the two filter outlets 134 to filter the gas and liquid respectively.

[0088] Specifically, the bottom of the cylinder 131 is also connected to a drain outlet 136, which is connected to the delivery pipe 5 provided with a sand discharge gate valve 17, and the bottom end of the filter screen 133 is also penetrated by a through opening. Therefore, when the filter cylinder 13 is flushing and sand discharge, the sand discharge gate valve 17 is opened, the flushing gate valve 20 is opened, and the external water flows from the filter outlet 134 below the cylinder 131 into the filter screen 133 to flush impurities, and then the water-impurity mixture enters the drain outlet 136 from the through opening at the bottom of the filter screen 133, and is then discharged from the sand discharge pipe opening 18 connected to the sand discharge gate valve 17, thereby realizing the sand discharge operation.

[0089] Example 4

[0090] Because the stratified gas and liquid in the filter cartridge 13 are filtered out from the two filter outlets 134 respectively, during the long sand removal process, more and more impurities are filtered out of the filter 133 and attached to the filter 133, until the filter 133 of the upper filter outlet 134 of the filtered gas is completely blocked. At this time, the gas with a greatly reduced filtered amount will be accumulated in the filter cavity 132 and cannot be discharged. Under the action of the pump pressure, the accumulated gas will generate a higher air pressure, and the higher pressure will act on the filter cartridge 13, causing the filter cartridge 13 to be damaged. Therefore, when the filter 133 is blocked, it is necessary to balance the pressure difference at both ends of the filter outlet 134 to avoid equipment damage.

[0091] Please refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 In this embodiment, the filter cartridge 13 further includes a gas filter element 25 ; the delivery pipe 5 provided with a vent valve 19 includes a vent straight pipe 191 and a pressurized air flow pipe 192 .

[0092] Specifically, there is a vent running through the upper part of the cylinder 131, which is located in the filter cavity 132 and above the filter screen 133. The vent is connected to the pressurized air flow pipe 192, and the pressurized air flow pipe 192 is connected to the pipeline provided with the filter outlet gate valve 14, and the filter outlet 134 for filtered gas at the upper part of the cylinder 131 is connected to the ventilation direct current pipe 191, and the ventilation direct current pipe 191 is also connected to the pipeline provided with the filter outlet gate valve 14; in the process of filtering the stratified gas and liquid by the filter cylinder 13, the gas will be discharged from the vent and the upper filter outlet 134 at the same time. When the filter screen 133 of the upper filter outlet 134 is blocked, the vent located outside the filter screen 133 is still connected to the filter cavity 132 and the delivery pipe 5 outside the upper filter outlet 134, thereby ensuring that the pressure difference inside and outside the filter cylinder 13 is consistent.

[0093] Specifically, a gas filter 25 is provided at the vent to filter the gas used for pressure passage, ensuring that the delivery pipe 5 at the pressure passage does not contain impurities.

[0094] The gas filter element 25 includes a mounting cylinder 251 and a filter element 252 .

[0095] The mounting cylinder 251 is fixed in the vent, and a filter element 252 is installed on the inner thread of the mounting cylinder 251. The filter pore diameter of the filter element 252 is smaller than the filter pore of the filter screen 133, and the filter element 252 can be disassembled and replaced by screws threadedly connected to the mounting cylinder 251.

[0096] Among them, in the process of filtering the gas out of the filter cartridge 13, because the pore size of the filter screen 133 is relatively large, the gas flow rate is too large, so that most of the gas is discharged from the upper filter outlet 134; and because the air vent is located outside the filter screen 133 cartridge, the gas entering the filter cavity 132 and exiting the vent has been filtered by the filter screen 133 of the filter screen 133 cartridge. When the filtered gas passes through the filter element 252 of the vent, it can prevent impurities from starting to clog the small-pore filter element 252, and when the filter screen 133 of the filter outlet 134 is clogged, the two ends of the filter outlet 134 can still be connected to balance the pressure difference.

[0097] It is worth noting that in the process of gas being filtered out of the filter cartridge 13, when the filter screen 133 is not blocked, the gas will be discharged from the large-aperture filter outlet 134 under pressure. Therefore, the ventilation straight pipe 191 connected to the filter outlet 134 is the main gas delivery pipe 5, and the pressurized air flow pipe 192 connected to the vent is the auxiliary gas delivery pipe 5; and when the filter screen 133 of the filter outlet 134 is blocked, due to the large gas flow rate out of the filter outlet 134, the attachment speed of impurities is much faster than that of the filter screens 133 at other positions. Therefore, when the filter screen 133 of the filter outlet 134 is blocked, the filter screen 133 in contact with the filter cavity 132 is not blocked yet, so the accumulated gas will be squeezed into the filter cavity 132 outside the filter screen 133, and discharged from the small-aperture vent under pressure. At this time, the pressurized air flow pipe 192 connected to the vent is the delivery pipe 5 for balancing the pressure difference, and also the delivery pipe 5 for gas filtration.

[0098] Example 5

[0099] Please refer to Figure 1 In this embodiment, the device is provided with two inlet pipes 1, two outlet pipes 3, and two DC gate valves, and the inlet pipes 1 (the outlet pipes 3) are connected in parallel with each other, and the inlet pipes 1, the DC gate valves and the outlet pipes 3 are connected in series with each other, thereby utilizing multiple inlet channels and multiple outlet channels to increase the delivery flow rate of the gas-liquid mixture.

[0100] Example 6

[0101] Please refer to Figure 1 and Figure 3 In this embodiment, the sand discharge pipeline system of the sand storage cylinder 8 also includes a flushing gate valve 16.

[0102] Specifically, the upper and lower parts of the sand storage barrel 8 are respectively provided with a flushing port, the upper flushing port is connected to a flushing gate valve 15, and the lower flushing port is connected to a flushing gate valve 2 16. In the sand discharge process of the sand storage barrel 8, the sand storage barrel 8 is the main sand storage position, so the impurities in the barrel are the most. When flushing from one position of the sand storage barrel 8, it takes a long time to flush to discharge the impurities in the barrel. Therefore, flushing is performed at the upper and lower parts of the sand storage barrel 8 at the same time. The flushing of the lower part will disperse the impurities accumulated more and more densely at the bottom of the sand storage barrel 8 and discharge them from the bottom, and form a cavity at the lower part. Then the flushing of the upper part will add water to increase the weight of the impurities accumulated less and looser at the top of the sand storage barrel 8, so that they collapse into the cavity at the lower part and are carried to the bottom by the water flow for discharge, thereby realizing the rapid sand discharge of impurities in the sand storage barrel 8.

[0103] Example 7

[0104] Please refer to Figure 2 and Figure 3 In this embodiment, a throttle valve 24 is provided in both the sand discharge piping system and the vent piping system to control the discharge flow rate during sand discharge and exhaust to avoid excessive discharge flow that affects the safety of the external environment.

[0105] Specifically, in the sand discharge pipeline system, the throttle valve 24 is connected to the conveying pipe 5 connected to the sand discharge gate valve 17 and the sand discharge pipe port 18. When the sand discharge operation is performed, the sand discharge gate valve 17 is opened, and the water flow and impurities are mixed and passed through the flow limit of the throttle valve 24 before being discharged to the outside from the sand discharge pipe port 18.

[0106] Specifically, in the venting pipeline system, the throttle valve 24 is connected to the delivery pipe 5 connected to the connecting gate valve 22 and the exhaust pipe port 23. When the exhaust work is performed, the connecting gate valve 22 is opened, and the gas is discharged to the outside from the exhaust pipe port 23 after passing through the flow limit of the throttle valve 24.

[0107] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have been omitted. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A cyclone desander with a filter cartridge, comprising a cyclone desander body (6), characterized in that; The cyclone desander body (6) is connected to the inlet pipe (1), the sand storage cylinder (8), the filter cylinder (13), and the outlet pipe (3) through a pipeline system. The pipeline system includes a straight-through pipeline system, a sand removal pipeline system, a sand removal-filtration pipeline system, a sand discharge pipeline system, and a venting pipeline system; The straight-through pipeline system comprises a straight-through gate valve (2) and a delivery pipe (5), wherein the straight-through gate valve (2) is arranged on the delivery pipe (5) communicating between the inlet pipe (1) and the outlet pipe (3); The desander pipeline system comprises: the inlet pipe (1) is connected to the top of the cyclone desander body (6) through the delivery pipe (5); the bottom of the cyclone desander body (6) is connected to the sand storage cylinder (8); and the top overflow port of the cyclone desander body (6) is connected to the outlet pipe (3) through the delivery pipe (5); The desander-filtration pipeline system comprises: the inlet pipe (1) is connected to the top of the cyclone desander body (6) through the delivery pipe (5); the bottom of the cyclone desander body (6) is connected to the sand storage cylinder (8); the top overflow port of the cyclone desander body (6) is connected to the outlet pipe (3) through the delivery pipe (5); and a filter cartridge (13) is provided on the delivery pipe (5) between the overflow port and the outlet pipe (3); The sand storage cylinder (8) and the filter cylinder (13) are respectively provided with sand discharge pipeline systems; The cyclone desander main body (6), the sand storage cylinder (8) and the filter cylinder (13) are connected to each other and are provided with a venting pipeline system.

2. A cyclone desander with a filter cartridge according to claim 1, characterized in that: The sand discharge pipeline system of the sand storage cylinder (8) is as follows: a water flushing port is connected on the wall of the sand storage cylinder (8), the water flushing port is connected to an external pump water pipe, and a sand discharge port is connected at the bottom of the sand storage cylinder (8); The sand discharge pipeline system on the filter cylinder (13) is as follows: a flushing port is connected on the cylinder wall of the filter cylinder (13), the flushing port is connected to an external pump water pipe, and a sand discharge port is connected at the cylinder bottom of the filter cylinder (13).

3. The cyclone desander with filter cartridge according to claim 1, characterized in that: The venting pipeline system is as follows: the filter cylinder (13) and the sand storage cylinder (8) are both provided with air outlets, the two air outlets are connected through a delivery pipe (5), the top of the sand storage cylinder (8) is connected to the inside of the cyclone sand remover body (6), the delivery pipe (5) is connected to one end of a valve connected to the second gate valve (22), and the other end of the valve connected to the second gate valve (22) is connected to an exhaust pipe port (23).

4. A cyclone desander with a filter cartridge according to claim 2, characterized in that: The sand discharge pipeline system of the sand storage cylinder (8) includes a flushing gate valve 1 (15) and a flushing gate valve 2 (16); The upper and lower parts of the sand storage cylinder (8) are respectively connected to a flushing port, the upper flushing port is connected to a flushing gate valve 1 (15), and the lower flushing port is connected to a flushing gate valve 2 (16). Both flushing ports are connected to an external water pump pipe, and the flushing gate valve 1 (15) and the flushing gate valve 2 (16) are located between the flushing port and the external water pump pipe.

5. The cyclone desander with filter cartridge according to claim 1, characterized in that: The filter cartridge (13) is provided with two filter outlets (134), which are respectively located at the upper and lower parts of the filter cartridge (13). Both filter outlets (134) are connected to the same delivery pipe (5), which is connected to the outflow pipe (3).

6. A cyclone desander with a filter cartridge according to claim 5, characterized in that: The filter cartridge (13) comprises a cartridge body (131), a filter cavity (132) is provided inside the cartridge body (131), the upper end of the cartridge body (131) is connected to a filter inlet, a filter screen (133) cartridge is fixedly provided in the filter cavity (132), the cartridge wall of the filter screen (133) cartridge is provided with a filter screen (133), the top end of the filter screen (133) cartridge is a through opening, and the filter inlet is connected to the through opening at the top end of the filter screen (133) cartridge; Two filter outlets (134) are respectively passed through the upper and lower parts of the cylinder wall of the cylinder body (131), and are respectively located at the upper and lower parts of the filter screen (133) cylinder in the filter cavity (132).

7. A cyclone desander with a filter cartridge according to claim 6, characterized in that: The upper portion of the cylinder (131) is also provided with a vent, which is located in the filter cavity (132) and above the filter screen (133). The vent is connected to the delivery pipe (5) outside the filter outlet (134) and the filter cavity (132). A gas filter (25) is also provided at the vent.

8. A cyclone desander with a filter cartridge according to claim 7, characterized in that: The gas filter (25) includes a mounting cylinder (251) and a filter element (252); The mounting cylinder (251) is fixed in the vent, and a filter element (252) is installed on the inner thread of the mounting cylinder (251). The filter hole diameter of the filter element (252) is smaller than the filter hole diameter of the filter screen (133) on the filter screen (133) cylinder.

9. The cyclone desander with filter cartridge according to claim 1, characterized in that: The upper portion of the cyclone desander body (6) is connected to two inlet pipes (1) via a delivery pipe (5); the overflow port at the top of the cyclone desander body (6) is connected to two outlet pipes (3) via a delivery pipe (5); the inlet pipes (1) and the outlet pipes (3) are connected in parallel; The inlet pipe (1), the DC gate valve and the outlet pipe (3) are sequentially connected in series.

10. The cyclone desander with filter cartridge according to claim 1, characterized in that: The sand discharge pipeline system and the vent pipeline system are both provided with a throttle valve (24); In the sand discharge pipeline system, a throttle valve (24) is connected and arranged at the sand discharge port; In the venting pipeline system, the throttle valve (24) is connected and arranged on the delivery pipe (5) connected to the second gate valve (22) and the exhaust pipe port (23).

Images