A filter separator for natural gas

Abstract

The utility model discloses a kind of filtering separators for natural gas, it is related to natural gas filtering technical field, including upper shell and lower shell, upper shell and lower shell are tubular structure, upper shell one end and lower shell one end flange connection, upper shell other end is equipped with detachable end cap assembly, lower shell other end is equipped with detachable blowdown assembly, upper shell side is equipped with exhaust component, filter assembly is equipped in upper shell, filter assembly is detachably connected with upper shell, lower shell side is equipped with air intake component, cyclone separation component is equipped in lower shell, cyclone separation component is detachably connected with lower shell, solved the filtering separator for natural gas of current natural gas in use, the problem that separation efficiency is insufficient and maintenance operation is inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of natural gas filtration technology, specifically to a natural gas filter separator. Background Technology

[0002] Natural gas, as a core clean energy source in the global energy structure, is widely used in key areas such as urban gas supply, industrial heating, and gas-fired power generation. Throughout its entire process, from well extraction and gathering to end-user use, it inevitably carries various impurities due to geological conditions and pipeline transportation environments. These impurities primarily include solid impurities such as formation rock debris, rust from pipeline corrosion, and mechanical wear particles, as well as liquid impurities such as condensate oil and formation water formed due to temperature and pressure changes. If these impurities enter downstream systems without effective treatment, they can cause serious damage to precision equipment such as compressors, flow meters, and regulating valves. Solid impurities can accelerate the wear of internal components, leading to seal failure and decreased accuracy; liquid impurities can easily cause internal corrosion and pipeline blockage, not only shortening equipment lifespan but also potentially causing leaks, shutdowns, and other safety accidents. Therefore, efficient purification of natural gas has become a core requirement for ensuring the safety of natural gas transportation and the stable operation of downstream equipment.

[0003] Current natural gas filtration and separation equipment used in the industry has significant limitations in impurity removal. The core issue is that some equipment uses only a single purification structure, failing to simultaneously and efficiently remove both solid and liquid impurities. On one hand, equipment relying solely on filter components can trap some fine solid particles, but condensate in the natural gas easily adheres to the filter media surface, causing rapid clogging of the filter media pores. This not only requires frequent shutdowns for cleaning but also significantly reduces filtration efficiency as the clogging worsens. On the other hand, equipment using only cyclone separator components can remove most liquid impurities and large solid particles larger than 10μm through centrifugal force separation. However, for fine dust particles smaller than 5μm, the centrifugal force is insufficient for effective separation, causing these fine impurities to still enter downstream with the natural gas. This fails to meet the high-precision purification requirements and is ill-suited to the stringent impurity removal precision demands of modern natural gas transmission systems.

[0004] Meanwhile, existing natural gas filtration and separation equipment also suffers from significant drawbacks in terms of ease of maintenance. Traditional equipment often uses fixed installations for core functional components such as filter elements and cyclone separators. When these components become clogged or damaged and require replacement or cleaning, the disassembly process is complex and inconvenient for maintenance. Therefore, there is an urgent need for a natural gas filtration and separation device that can effectively filter and is easy to maintain. Utility Model Content

[0005] Based on this, and in response to the above problems, this utility model proposes a natural gas filter separator, which solves the problems of insufficient separation efficiency and inconvenient maintenance and operation of current natural gas filter separators.

[0006] The technical solution of this utility model is:

[0007] A natural gas filter separator includes an upper shell and a lower shell, both of which are tubular structures. One end of the upper shell is connected to one end of the lower shell by a flange. The other end of the upper shell is provided with a detachable end cap assembly, and the other end of the lower shell is provided with a detachable drain assembly. An exhaust assembly is provided on one side of the upper shell, and a filter assembly that cooperates with the exhaust assembly is provided inside the upper shell. The filter assembly is detachably connected to the upper shell. An air inlet assembly is provided on one side of the lower shell, and a cyclone separator that cooperates with the air inlet assembly is provided inside the lower shell. The cyclone separator is detachably connected to the lower shell.

[0008] Preferably, a first partition plate is fixedly provided inside the lower housing, and a cyclone separation assembly is disposed above the first partition plate. The cyclone separation assembly includes a first sealing plate and a plurality of cyclone tubes. The first sealing plate is disposed above the first partition plate and is slidably connected to the inner side wall of the lower housing. The plurality of cyclone tubes are disposed between the first partition plate and the first sealing plate. One end of the plurality of cyclone tubes passes through the first sealing plate and is fixedly connected to the first sealing plate, and the other end of the plurality of cyclone tubes passes through the first partition plate and is detachably connected to the first partition plate.

[0009] Preferably, the cyclone tube includes a flow tube, a cyclone head, and a discharge head. One end of the flow tube passes through the first sealing plate and is fixedly connected to the first sealing plate. The cyclone head is sleeved on the other end of the flow tube and is fixedly connected to the flow tube. The cyclone head is provided with a pair of arc-shaped air inlets. The cyclone head is provided with a cyclone cavity communicating with the arc-shaped air inlets. The cyclone cavity is clearance-fitted with the flow tube. The lower end of the cyclone head passes through the first partition plate and extends to the bottom of the first partition plate. The cyclone head is slidably connected to the first partition plate. The discharge head is located below the first partition plate. The discharge head is sleeved on the lower end of the cyclone head and is threadedly connected to the cyclone head.

[0010] Preferably, a locking ring is provided inside the lower housing, the locking ring is threaded to the inner side wall of the lower housing, the locking ring is located at the upper end of the first sealing plate, and one end of the locking ring abuts against the first sealing plate.

[0011] Preferably, the sewage discharge assembly includes a funnel-shaped sewage pipe and a sewage discharge valve. One end of the funnel-shaped sewage pipe is connected to a flange at one end of the lower housing, and the sewage discharge valve is located at the other end of the funnel-shaped sewage pipe and is connected to the flange of the funnel-shaped sewage pipe.

[0012] Preferably, the air intake assembly includes an air intake pipe and an air intake valve. One end of the air intake pipe extends through one side of the lower housing and into the lower housing. The air intake pipe is fixedly connected to the lower housing. The end of the air intake pipe extending into the lower housing is located between the first sealing plate and the first partition plate, and is located above the cyclone head. The air intake valve is located at the other end of the air intake pipe and is connected to the air intake pipe flange.

[0013] Preferably, a second partition plate is fixedly provided inside the upper housing, and a filter assembly is disposed above the second partition plate. The filter assembly includes a second sealing plate and a plurality of filter elements. The second sealing plate is disposed above the second partition plate, and the plurality of filter elements are disposed between the second partition plate and the second sealing plate. One end of the plurality of filter elements extends through the second partition plate to the bottom of the second partition plate and is slidably connected to the second partition plate. The other end of the plurality of filter elements is detachably connected to the second sealing plate.

[0014] Preferably, the end of the filter element connected to the second sealing plate is provided with a connecting screw. One end of the connecting screw is fixedly connected to the end of the filter element, and the other end passes through the second sealing plate and is slidably connected to the second sealing plate. The end of the connecting screw is provided with a locking nut, which is located at the upper end of the second sealing plate.

[0015] Preferably, the end cap assembly includes an end cap body and a rotating handle fixedly mounted on the end cap body. The end cap body is sleeved on the end of the upper housing and threadedly connected to the upper housing. An abutment ring is fixedly provided at one end of the end cap body. The abutment ring is inserted into the upper housing and abuts against the second sealing plate at one end. A spring is provided between the end cap body and the second sealing plate. The spring is located in the upper housing. One end of the spring abuts against the end cap body and the other end abuts against the second sealing plate.

[0016] Preferably, the exhaust assembly includes an exhaust pipe, an exhaust valve, and a partition plate. The partition plate is fixedly disposed inside the upper housing and located between the second sealing plate and the second partition plate. One end of the partition plate contacts the second sealing plate, and an exhaust chamber is formed between the partition plate and the inner wall of the upper housing. Several filter elements are located outside the exhaust chamber. The other end of the partition plate is clearance-fitted with the second partition plate to form an exhaust port communicating with the exhaust chamber. One end of the exhaust pipe extends through the upper housing into the exhaust chamber and is fixedly connected to the upper housing. The exhaust valve is disposed at the other end of the exhaust pipe and is connected to the exhaust pipe flange.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In operation, natural gas enters the equipment through the inlet assembly in the lower housing. It first interacts with the cyclone separator within the lower housing, using centrifugal force to separate most liquid impurities and large-particle solid impurities. The separated impurities settle to the bottom of the lower housing and are discharged through a detachable drain assembly. The preliminarily purified natural gas continues upward into the upper housing, where it interacts with the filter assembly. The filter assembly traps fine solid particles, and the final purified natural gas is discharged through the exhaust assembly in the upper housing. Furthermore, the upper and lower housings are connected by flanges, and the end cap assembly, drain assembly, filter assembly, and cyclone separator assembly are all detachable. This allows for component replacement and cleaning without disassembling the entire device, significantly reducing maintenance difficulty and solving the problems of insufficient separation efficiency and inconvenient maintenance in current natural gas filter separators. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a natural gas filter separator as described in an embodiment of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of a natural gas filter separator as described in an embodiment of this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic cross-sectional view of a natural gas filter separator as described in an embodiment of this utility model. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of a partial explosion structure of a natural gas filter separator described in this embodiment of the present invention. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the cyclone separation component described in this embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the cyclone tube described in this embodiment of the utility model;

[0026] Figure 7 This is a cross-sectional structural diagram of the cyclone pipe described in this embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of a partial explosion structure of a natural gas filter separator described in this embodiment of the present invention. Figure 2 ;

[0028] Figure 9 This is a schematic diagram of a partial explosion structure of a natural gas filter separator described in this embodiment of the present invention. Figure 3 ;

[0029] Figure 10 This is a schematic diagram of the structure of the filter assembly described in the embodiment of this utility model;

[0030] Explanation of reference numerals in the attached figures:

[0031] 10-Upper shell, 11-Lower shell, 12-End cap assembly, 13-Drainage assembly, 14-Exhaust assembly, 15-Filter assembly, 16-Intake assembly, 17-Cyclone separator assembly, 18-First partition plate, 19-First sealing plate, 20-Cyclone pipe, 21-Flow pipe, 22-Cyclone head, 23-Discharge head, 24-Arc-shaped air inlet, 25-Cyclone cavity, 26-Locking ring, 27-Funnel-shaped drain pipe, 28-Drain valve, 29-Intake pipe, 30-Intake valve, 31-Second partition plate, 32-Second sealing plate, 33-Filter element, 34-Connecting screw, 35-Locking nut, 36-End cap body, 37-Rotating handle, 38-Abutment ring, 39-Spring, 40-Exhaust pipe, 41-Exhaust valve, 42-Partition plate, 43-Exhaust cavity, 44-Exhaust port. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0036] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0038] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0039] Example:

[0040] like Figures 1 to 10As shown, this embodiment discloses a natural gas filter separator, including an upper shell 10 and a lower shell 11. Both the upper shell 10 and the lower shell 11 are tubular structures. One end of the upper shell 10 is connected to one end of the lower shell 11 by a flange. The other end of the upper shell 10 is provided with a detachable end cap assembly 12. The other end of the lower shell 11 is provided with a detachable sewage discharge assembly 13. An exhaust assembly 14 is provided on one side of the upper shell 10. A filter assembly 15 is provided inside the upper shell 10 and is configured to cooperate with the exhaust assembly 14. The filter assembly 15 is detachably connected to the upper shell 10. An air intake assembly 16 is provided on one side of the lower shell 11. A cyclone separator assembly 17 is provided inside the lower shell 11 and is configured to cooperate with the air intake assembly 16. The cyclone separator assembly 17 is detachably connected to the lower shell 11.

[0041] In use, natural gas enters the device through the inlet assembly 16 of the lower housing 11. It first cooperates with the cyclone separator 17 within the lower housing 11, using centrifugal force to separate most liquid impurities and large-particle solid impurities. The separated impurities settle to the bottom of the lower housing 11 and are discharged through the detachable drain assembly 13. The preliminarily purified natural gas continues upward into the upper housing 10, where it cooperates with the filter assembly 15. The filter assembly 15 traps fine solid particles, and the finally purified natural gas is discharged through the exhaust assembly 14 of the upper housing 10. Simultaneously, the upper housing 10 is flange-connected to the lower housing 11, and the end cap assembly 12, drain assembly 13, filter assembly 15, and cyclone separator 17 are all detachable. Replacement and cleaning of components can be completed without disassembling the entire device, significantly reducing maintenance difficulty and solving the problems of insufficient separation efficiency and inconvenient maintenance in current natural gas filter separators.

[0042] To facilitate the installation of the cyclone separator assembly 17, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a first partition plate 18 is fixedly provided inside the lower housing 11, and the cyclone separator assembly 17 is disposed above the first partition plate 18. The cyclone separator assembly 17 includes a first sealing plate 19 and a plurality of cyclone tubes 20. The first sealing plate 19 is disposed above the first partition plate 18 and is slidably connected to the inner side wall of the lower housing 11. The plurality of cyclone tubes 20 are disposed between the first partition plate 18 and the first sealing plate 19. One end of the plurality of cyclone tubes 20 passes through the first sealing plate 19 and is fixedly connected to the first sealing plate 19. The other end of the plurality of cyclone tubes 20 passes through the first partition plate 18 and is detachably connected to the first partition plate 18.

[0043] The cyclone tube 20 includes a flow tube 21, a cyclone head 22, and a discharge head 23. One end of the flow tube 21 passes through the first sealing plate 19 and is fixedly connected to the first sealing plate 19. The cyclone head 22 is sleeved on the other end of the flow tube 21 and is fixedly connected to the flow tube 21. The cyclone head 22 is provided with a pair of arc-shaped air inlets 24. The cyclone head 22 is provided with a cyclone cavity 25 communicating with the arc-shaped air inlets 24. The cyclone cavity 25 is clearance-fitted with the flow tube 21. The lower end of the cyclone head 22 passes through the first partition plate 18 and extends to below the first partition plate 18. The cyclone head 22 is slidably connected to the first partition plate 18. The discharge head 23 is located below the first partition plate 18. The discharge head 23 is sleeved on the lower end of the cyclone head 22 and is threadedly connected to the cyclone head 22.

[0044] The lower housing 11 is provided with a locking ring 26, which is threaded to the inner wall of the lower housing 11. The locking ring 26 is located at the upper end of the first sealing plate 19, and one end of the locking ring 26 abuts against the first sealing plate 19.

[0045] A first partition plate 18 fixed inside the lower housing 11 divides the interior of the lower housing 11 into upper and lower regions. The cyclone separator assembly 17 is positioned above the first partition plate 18. The locking ring 26 is threaded to the inner wall of the lower housing 11 and abuts against the upper end of the first sealing plate 19, thus achieving a stable positioning of the cyclone separator assembly 17. An air chamber is formed between the first partition plate 18 and the first sealing plate 19. In use, natural gas enters the region between the first sealing plate 19 and the first partition plate 18 through the air intake assembly 16, i.e., after entering the air chamber, it cuts in through the arc-shaped air intake 24 of the cyclone head 22, forming a high-speed rotating airflow in the cyclone chamber 25. Using centrifugal force, liquid impurities and large-diameter solid impurities are thrown towards the inner wall of the cyclone chamber 25. The impurities settle down below the first partition plate 18 along the inner wall of the cyclone chamber 25, and then enter the sewage discharge assembly 13 for discharge. The preliminarily purified natural gas enters the flow pipe 21, then passes through the first sealing plate 19 and enters the upper housing 10. The arc-shaped air inlet 24 guides the airflow to form a strong cyclone. Combined with the gap design between the cyclone cavity 25 and the flow tube 21, it greatly improves the separation rate of liquid and large particulate impurities and prevents impurities from escaping upward with the airflow. The setting of several cyclone tubes 20 expands the airflow processing area and is suitable for high-flow natural gas transportation scenarios.

[0046] To facilitate sewage discharge, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the sewage discharge component 13 includes a funnel-shaped sewage pipe 27 and a sewage discharge valve 28. One end of the funnel-shaped sewage pipe 27 is connected to a flange at one end of the lower housing 11, and the sewage discharge valve 28 is located at the other end of the funnel-shaped sewage pipe 27 and is connected to the flange of the funnel-shaped sewage pipe 27.

[0047] The funnel-shaped drain pipe 27 facilitates the collection of impurities, which are then discharged under control via the drain valve 28. The drain valve 28 controls the discharge of impurities, and when closed, it seals the equipment without affecting normal separation operations.

[0048] To facilitate natural gas intake, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the intake assembly 16 includes an intake pipe 29 and an intake valve 30. One end of the intake pipe 29 extends through one side of the lower housing 11 and into the lower housing 11. The intake pipe 29 is fixedly connected to the lower housing 11. The end of the intake pipe 29 extending into the lower housing 11 is located between the first sealing plate 19 and the first partition plate 18 and is located above the cyclone head 22. The intake valve 30 is located at the other end of the intake pipe 29 and is connected to the flange of the intake pipe 29.

[0049] One end of the air inlet pipe 29 extends between the first sealing plate 19 and the first partition plate 18 inside the lower housing 11, and is directly above the cyclone head 22, which facilitates the rapid entry of natural gas into the cyclone separation process; the air inlet valve 30 can control the airflow switch and flow rate to adapt to different working conditions.

[0050] To facilitate the installation of the filter assembly 15, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a second partition plate 31 is fixedly provided inside the upper housing 10, and the filter assembly 15 is disposed above the second partition plate 31. The filter assembly 15 includes a second sealing plate 32 and a plurality of filter elements 33. The second sealing plate 32 is disposed above the second partition plate 31, and the plurality of filter elements 33 are disposed between the second partition plate 31 and the second sealing plate 32. One end of the plurality of filter elements 33 passes through the second partition plate 31 and extends to the bottom of the second partition plate 31 and is slidably connected to the second partition plate 31. The other end of the plurality of filter elements 33 is detachably connected to the second sealing plate 32.

[0051] The filter element 33 is connected to the second sealing plate 32 at one end by a connecting screw 34. One end of the connecting screw 34 is fixedly connected to the end of the filter element 33, and the other end passes through the second sealing plate 32 and is slidably connected to the second sealing plate 32. The end of the connecting screw 34 is provided with a locking nut 35, which is located at the upper end of the second sealing plate 32.

[0052] The second partition plate 31 divides the interior of the upper housing 10 into upper and lower regions. The filter assembly 15 is positioned above the second partition plate 31. One end of the filter element 33 extends through the second partition plate 31 to the lower part, communicating with the gas inlet area of ​​the upper housing 10. The other end is connected to the second sealing plate 32 via a connecting screw 34. The filter element 33 is fixed after the locking nut 35 is tightened. In use, the pre-purified natural gas coming from the lower housing 11 passes through the second partition plate 31 and enters the interior of the filter element 33. Fine solid impurities with a particle size of less than 5μm are intercepted by the filter material. The purified natural gas seeps out from the outside of the filter element 33, enters the area between the second sealing plate 32 and the second partition plate 31, and is then discharged through the exhaust assembly 14. The filter element 33 can be a sintered filter element that can achieve the function of this utility model in the prior art.

[0053] To enhance the stability of the filter assembly 15 during installation and use, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the end cap assembly 12 includes an end cap body 36 and a rotating handle 37 fixedly mounted on the end cap body 36. The end cap body 36 is sleeved on the end of the upper housing 10 and threadedly connected to the upper housing 10. An abutment ring 38 is fixedly provided at one end of the end cap body 36. The abutment ring 38 is inserted into the upper housing 10 and abuts against the second sealing plate 32 at one end. A spring 39 is provided between the end cap body 36 and the second sealing plate 32. The spring 39 is located inside the upper housing 10. One end of the spring 39 abuts against the end cap body 36 and the other end abuts against the second sealing plate 32.

[0054] The elastic pressure of spring 39 can compensate for the slight deformation of the second sealing plate 32 caused by temperature and pressure changes, thus maintaining a sealed state. The abutment ring 38 further strengthens the sealing positioning and prevents the second sealing plate 32 from shifting. At the same time, during use, the end cover body 36 can be quickly removed by rotating the handle 37 without the need for complicated tools. After the end cover body 36 is removed, the filter assembly 15 can be taken out as a whole, which greatly simplifies the filter element 33 replacement process and reduces equipment downtime.

[0055] To discharge clean natural gas, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the exhaust assembly 14 includes an exhaust pipe 40, an exhaust valve 41, and a partition plate 42. The partition plate 42 is fixedly installed inside the upper housing 10 and is located between the second sealing plate 32 and the second partition plate 31. One end of the partition plate 42 is in contact with the second sealing plate 32. An exhaust chamber 43 is formed between the partition plate 42 and the inner side wall of the upper housing 10. Several filter elements 33 are located outside the exhaust chamber 43. The other end of the partition plate 42 is clearance-fitted with the second partition plate 31 to form an exhaust port 44 communicating with the exhaust chamber 43. One end of the exhaust pipe 40 extends through the upper housing 10 into the exhaust chamber 43. The exhaust pipe 40 is fixedly connected to the upper housing 10. The exhaust valve 41 is installed at the other end of the exhaust pipe 40 and is flange-connected to the exhaust pipe 40.

[0056] The partition plate 42 is fixed inside the upper housing 10, dividing the area between the second sealing plate 32 and the second partition plate 31 into an exhaust chamber 43 and a filter area, with the filter element 33 located in the filter area.

[0057] During use, the purified natural gas seeps out from the filter element 33 and enters the exhaust chamber 43 through the exhaust port 44 of the partition plate 42 and the second partition plate 31, and is then discharged through the exhaust pipe 40. The exhaust valve 41 controls the exhaust switch, and the exhaust valve 41 can quickly cut off the exhaust, which is convenient for equipment maintenance or downstream repairs.

[0058] Working principle of this utility model:

[0059] In use, natural gas enters the device through the air intake assembly 16 of the lower housing 11. It first works with the cyclone separator 17 inside the lower housing 11 to separate most of the liquid impurities and large-diameter solid impurities using centrifugal force. The separated impurities settle to the bottom of the lower housing 11 and are discharged through the detachable drain assembly 13. The preliminarily purified natural gas continues to enter the upper housing 10 and works with the filter assembly 15 inside the upper housing 10. The filter assembly 15 traps fine solid particles, and the finally purified natural gas is discharged through the exhaust assembly 14 of the upper housing 10.

[0060] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter separator for natural gas, characterized by, It includes an upper shell (10) and a lower shell (11), both of which are tubular structures. One end of the upper shell (10) is connected to one end of the lower shell (11) by a flange. The other end of the upper shell (10) is provided with a detachable end cap assembly (12), and the other end of the lower shell (11) is provided with a detachable sewage discharge assembly (13). One side of the upper shell (10) is provided with an exhaust assembly (14). Inside the upper shell (10) is a filter assembly (15) that cooperates with the exhaust assembly (14). The filter assembly (15) is detachably connected to the upper shell (10). One side of the lower shell (11) is provided with an air intake assembly (16). Inside the lower shell (11) is a cyclone separator assembly (17) that cooperates with the air intake assembly (16). The cyclone separator assembly (17) is detachably connected to the lower shell (11).

2. The filter separator for natural gas according to claim 1, wherein A first partition plate (18) is fixedly provided inside the lower housing (11). A cyclone separation assembly (17) is disposed above the first partition plate (18). The cyclone separation assembly (17) includes a first sealing plate (19) and a plurality of cyclone tubes (20). The first sealing plate (19) is disposed above the first partition plate (18) and is slidably connected to the inner side wall of the lower housing (11). A plurality of cyclone tubes (20) are disposed between the first partition plate (18) and the first sealing plate (19). One end of the plurality of cyclone tubes (20) passes through the first sealing plate (19) and is fixedly connected to the first sealing plate (19). The other end of the plurality of cyclone tubes (20) passes through the first partition plate (18) and is detachably connected to the first partition plate (18).

3. The filter separator for natural gas as claimed in claim 2 wherein, The cyclone tube (20) includes a flow tube (21), a cyclone head (22), and a discharge head (23). One end of the flow tube (21) passes through the first sealing plate (19) and is fixedly connected to the first sealing plate (19). The cyclone head (22) is sleeved on the other end of the flow tube (21) and is fixedly connected to the flow tube (21). The cyclone head (22) is provided with a pair of arc-shaped air inlets (24). The cyclone head (22) is provided with a pair of arc-shaped air inlets (24). The cyclone cavity (25) is connected to the flow tube (21) with a clearance fit. The lower end of the cyclone head (22) extends through the first partition plate (18) to the bottom of the first partition plate (18). The cyclone head (22) is slidably connected to the first partition plate (18). The discharge head (23) is located below the first partition plate (18). The discharge head (23) is sleeved on the lower end of the cyclone head (22) and threadedly connected to the cyclone head (22).

4. The filter separator for natural gas as claimed in claim 3, wherein The lower housing (11) is provided with a locking ring (26), which is threaded to the inner wall of the lower housing (11). The locking ring (26) is located at the upper end of the first sealing plate (19), and one end of the locking ring (26) abuts against the first sealing plate (19).

5. A natural gas filter separator according to claim 4, characterized in that, The sewage discharge assembly (13) includes a funnel-shaped sewage pipe (27) and a sewage valve (28). One end of the funnel-shaped sewage pipe (27) is connected to a flange at one end of the lower housing (11), and the sewage valve (28) is located at the other end of the funnel-shaped sewage pipe (27) and is connected to the flange of the funnel-shaped sewage pipe (27).

6. A natural gas filter separator according to claim 5, characterized in that, The intake assembly (16) includes an intake pipe (29) and an intake valve (30). One end of the intake pipe (29) extends through one side of the lower housing (11) into the lower housing (11). The intake pipe (29) is fixedly connected to the lower housing (11). One end of the intake pipe (29) extending into the lower housing (11) is located between the first sealing plate (19) and the first partition plate (18) and is located above the cyclone head (22). The intake valve (30) is located at the other end of the intake pipe (29) and is connected to the flange of the intake pipe (29).

7. A natural gas filter separator according to claim 6, characterized in that, A second partition plate (31) is fixedly provided inside the upper housing (10). The filter assembly (15) is disposed above the second partition plate (31). The filter assembly (15) includes a second sealing plate (32) and a plurality of filter elements (33). The second sealing plate (32) is disposed above the second partition plate (31). The plurality of filter elements (33) are disposed between the second partition plate (31) and the second sealing plate (32). One end of the plurality of filter elements (33) extends through the second partition plate (31) to the bottom of the second partition plate (31) and is slidably connected to the second partition plate (31). The other end of the plurality of filter elements (33) is detachably connected to the second sealing plate (32).

8. A natural gas filter separator according to claim 7, characterized in that, The filter element (33) is connected to the second sealing plate (32) at one end by a connecting screw (34). One end of the connecting screw (34) is fixedly connected to the end of the filter element (33), and the other end passes through the second sealing plate (32) and is slidably connected to the second sealing plate (32). The end of the connecting screw (34) is provided with a locking nut (35), which is located at the upper end of the second sealing plate (32).

9. A natural gas filter separator according to claim 8, characterized in that, The end cap assembly (12) includes an end cap body (36) and a rotating handle (37) fixedly mounted on the end cap body (36). The end cap body (36) is fitted onto the end of the upper housing (10) and is threadedly connected to the upper housing (10). An abutment ring (38) is fixedly provided at one end of the end cap body (36). The abutment ring (38) is inserted into the upper housing (10) and one end abuts against the second sealing plate (32). A spring (39) is provided between the end cap body (36) and the second sealing plate (32). The spring (39) is located in the upper housing (10). One end of the spring (39) abuts against the end cap body (36) and the other end abuts against the second sealing plate (32).

10. A natural gas filter separator according to claim 9, characterized in that, The exhaust assembly (14) includes an exhaust pipe (40), an exhaust valve (41), and a partition plate (42). The partition plate (42) is fixedly installed inside the upper housing (10) and located between the second sealing plate (32) and the second partition plate (31). One end of the partition plate (42) is in contact with the second sealing plate (32). An exhaust chamber (43) is formed between the partition plate (42) and the inner wall of the upper housing (10). Several filter elements (33) are located outside the exhaust chamber (43). The other end of the partition plate (42) is clearance-fitted with the second partition plate (31) to form an exhaust port (44) communicating with the exhaust chamber (43). One end of the exhaust pipe (40) extends through the upper housing (10) into the exhaust chamber (43). The exhaust pipe (40) is fixedly connected to the upper housing (10). The exhaust valve (41) is located at the other end of the exhaust pipe (40) and is connected to the flange of the exhaust pipe (40).

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