A gas purification device for natural gas field wellhead

Abstract

The present application provides a gas purification device for a natural gas field wellhead, which relates to the field of natural gas exploitation. A gas purification device for a natural gas field wellhead, comprising: a tank body, wherein the top and bottom of the inner cavity of the tank body are fixedly connected with an embedded frame, and the tops of both sides of the tank body are fixedly connected with a cylinder barrel, and an embedded barrel is arranged at the center of the inner cavity of the tank body; the inner cavity of the tank body is provided with a filter assembly, and the inner cavity of the cylinder barrel is provided with a heating assembly; both sides of the heating assembly are provided with a conveying assembly, and the inner cavity of the tank body is provided with a dehumidification assembly used in conjunction with the filter assembly. The gas purification device for a natural gas field wellhead, through the cooperation of the filter assembly, the heating assembly, the conveying assembly and the dehumidification assembly, based on the premise of zoning treatment, adopts a combination of double filtration and rapid dehumidification to achieve efficient purification and dehumidification effects on the gas field wellhead.

Description

Technical Field

[0001] The present application relates to the technical field of natural gas extraction, and in particular to a gas purification device for a wellhead of a natural gas field. Background Art

[0002] A natural gas field, or gas field for short, is an area rich in natural gas. Usually, organic matter buried at a depth of 1,000 to 6,000 meters and at a temperature of 65 to 150 degrees Celsius will produce oil, while deeper burials and higher temperatures will produce natural gas. During the exploitation of natural gas fields by oil companies, purification equipment is needed to pre-treat the gas at the wellhead of the natural gas field.

[0003] In the prior art (Announcement No. CN208430105U, Patent Name: Patent Application for a Natural Gas Field Wellhead Purification Device), the principle of mechanical separation, microfiber filtration and microporous medium coagulation growth is comprehensively adopted, which has high dust removal and filtration accuracy and dehumidification capacity. In the process of implementing this technical solution, it is found that the prior art at least has the problem of overall dust removal and dehumidification treatment of the natural gas field wellhead gas, which is prone to missing dust removal and dehumidification areas, and also causes poor dust removal and dehumidification effects.

[0004] During the pretreatment of natural gas field wellhead gas by the purification devices currently used, most of them perform overall and single filtration and dehumidification treatment on the gas field wellhead gas. Since the gas field wellhead gas is widely and dispersedly distributed in the purification devices, purification and dehumidification of the gas field wellhead gas are missed, resulting in poor pretreatment effect of the gas field wellhead gas. Summary of the invention

[0005] The present application aims to at least solve the technical problem that the prior art cannot achieve efficient purification and dehumidification of gas field wellhead gas by combining double filtration and rapid dehumidification based on the premise of zoning treatment, so as to prevent the occurrence of missed purification and dehumidification areas, resulting in poor effect of pre-treated gas field wellhead gas. To this end, the present application proposes a gas purification device for natural gas field wellhead.

[0006] According to an embodiment of the present application, a gas purification device for a natural gas field wellhead includes: a tank body, wherein the top and bottom of the inner cavity of the tank body are fixedly connected to an embedded frame, and the tops of both sides of the tank body are fixedly connected to a cylinder barrel, and an embedded barrel is arranged at the center of the inner cavity of the tank body; The inner cavity of the tank body is provided with a filter assembly, and the inner cavity of the cylinder barrel is provided with a heating assembly; Conveying components are arranged on both sides of the heating component, and a dehumidification component is arranged in the inner cavity of the tank body.

[0007] Preferably, the filter assembly includes a sealed cavity, which is opened around the inner cavity of the tank body near the bottom of the embedded cylinder, and a servo motor is fixedly connected to the center of the top of the tank body, the output shaft of the servo motor is fixedly connected to the spiral cylinder, and a spiral filter screen is embedded on the outside of the spiral cylinder, the bottom of the spiral cylinder is fixedly connected to a reciprocating screw that rotates with the embedded cylinder, and the surface wall of the reciprocating screw is threadedly connected to a screw sleeve, the outside of the screw sleeve is fixedly connected to a large annular filter screen, and push arms are fixedly connected around the large annular filter screen, and the bottom of the push arm is fixedly connected to a small annular filter screen that slides with the sealed cavity.

[0008] Preferably, the heating component includes a first driving bevel gear, which is fixed on the output shaft of the servo motor, and the teeth of the first driving bevel gear are meshed with a first driven bevel gear, the inner cavity of the first driven bevel gear is fixedly connected to a concave rod rack used in conjunction with the cylinder barrel, and a swivel sleeve is rotatably connected to the center of the concave rod rack, a connecting rod is fixedly connected to the swivel sleeve, and the other end of the connecting rod is hinged with a piston that slides with the cylinder barrel, the exhaust port of the cylinder barrel is connected to a five-way valve, and the outer end of the five-way valve is connected to a heater that is fixedly matched with the tank body.

[0009] Preferably, the conveying assembly includes a Y-shaped tube, the Y-shaped tube is connected at both ends of the five-way valve, and the end of the Y-shaped tube away from the five-way valve is connected to a three-way tube, the bottom end of the five-way valve is connected to an L-shaped tube, and the end of the L-shaped tube away from the five-way valve is connected to a three-way joint, the top end of the three-way joint is connected to a rotating joint, and the inner cavity of the rotating joint is rotatably connected to a connecting joint, and the rotating joint and the connecting joint are in an intercommunication state, and a rotating rod is provided at the top end of the connecting joint.

[0010] Preferably, the dehumidification component includes an air distribution cylinder, which is embedded in the inner cavity of the tank body near the center of the sealed cavity and fixedly connected to the rotating rod, and the inner cavities of the reciprocating screw rod, the rotating rod and the air distribution cylinder are all provided with hollow channels used in conjunction with the connecting joint, the air distribution cylinder is connected to an injection rack on all sides, and a flow equalizing plate is embedded in the outer end of the injection rack, a spray port used in conjunction with the flow equalizing plate is provided on one side of the sealed cavity close to the injection rack, and a reserved cavity connected and cooperated with the hollow channel is provided in the inner cavity of the spiral cylinder, and spray holes used in conjunction with the spiral filter are provided on all sides of the spiral cylinder.

[0011] Preferably, the spiral filter and the large annular filter both adopt a diamond mesh design, and the small annular filter adopts a honeycomb mesh design, and a sliding groove that slides with the large annular filter is provided in an annular shape on the inner wall of the tank body close to the embedded cylinder.

[0012] Preferably, the upper and lower sides of the inner cavity of the tank body close to the sealing cavity are fixedly connected with a flow guide seat fixedly matched with the embedded cylinder, and the flow guide seat is provided with reserved circular openings communicating with the sealing cavity around it.

[0013] Preferably, spoiler blades used in conjunction with the embedded frame are fixedly connected to the four sides of the concave rod frame close to the first driving bevel gear, and the spoiler blades are designed in a quarter-circle state.

[0014] Preferably, the bottom of the left side of the tank body is connected to an air inlet pipe, and the bottom of the right side of the tank body is connected to a discharge pipe, and a first one-way valve is provided on both the air inlet pipe and the discharge pipe.

[0015] Preferably, the top of the right side of the tank body is connected to an exhaust port used in conjunction with a three-way pipe, and a second one-way valve is provided on the exhaust port, and the top of the three-way pipe is connected to an exhaust pipe.

[0016] The beneficial effect of the present application is that during the pretreatment of the gas field wellhead gas, the servo motor first provides a unified driving source, and the rotating spiral cylinder and spiral filter screen spirally convey and filter the gas field wellhead gas in the space above the tank body to prevent the gas field wellhead gas from accumulating in the space above the tank body, and also improve the filtration adequacy of the gas field wellhead gas. Then, the reciprocating screw, screw sleeve and large annular filter screen reciprocate and lift the gas field wellhead gas in the upper space of the tank body to further improve the filtration effect of the gas field wellhead gas. Then, based on the partitioning premise, the push arm, small annular filter screen and sealing chamber reciprocate and lift the gas field wellhead gas in the lower space of the tank body to further enhance the filtration effect of the gas field wellhead gas and improve the cleanliness of the gas field wellhead gas. Then, the transmission cooperation of the two sets of first driving bevel gears and the first driven bevel gears, the reciprocating work of the two sets of concave rod frames, rotating sleeves, connecting rods and pistons, the two-way increase gas generated in the two sets of cylinder barrels is The high-pressure gas passes through two groups of five-way valves and merges with the heat sources generated by the two groups of heaters. Then, the two groups of Y-tubes and three-way pipes quickly heat and dehumidify the purified gas field wellhead gas while quickly discharging the purified and dehumidified gas field wellhead gas through the exhaust pipe to facilitate discharging and prevent the gas field wellhead gas from clogging in the exhaust pipe. At the same time, the L-tube, three-way joint, rotary joint, connecting joint and rotating rod quickly transport the merged pressurized heat source to provide heat source supply for the dehumidification operation of the gas field wellhead gas. Finally, the gas distribution cylinder, hollow channel, injection rack, flow equalizing plate and injection port perform zoned heating and dehumidification treatment on the gas field wellhead gas in the middle and lower part of the tank body to avoid dehumidification omission of the gas field wellhead gas. Then, the reserved cavity and injection hole perform heating and dehumidification while filtering and transporting the gas field wellhead gas in the middle and upper part of the tank body. Based on the premise of zoned treatment, a combination of double filtration and rapid dehumidification is adopted to achieve efficient purification and dehumidification effects on the gas field wellhead gas.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a gas purification device for a natural gas field wellhead according to an embodiment of the present application; Figure 2 This is a bottom view of the three-dimensional structure of a gas purification device for a natural gas field wellhead according to an embodiment of the present application; Figure 3 It is a three-dimensional structural cross-sectional view of a gas purification device for a natural gas field wellhead according to an embodiment of the present application; Figure 4 This is a three-dimensional internal view of a gas purification device for a natural gas field wellhead according to an embodiment of the present application; Figure 5 is a partial cross-sectional view of the tank body, filter assembly and auxiliary assembly structure according to an embodiment of the present application; Figure 6 is a bottom view of the filter assembly and auxiliary assembly structure according to an embodiment of the present application; Figure 7 It is a front cross-sectional view of the structure of the cylinder barrel, the heating component, the conveying component and the dehumidification component according to an embodiment of the present application; Figure 8 is a rear cross-sectional view of the cylinder barrel and the heating assembly structure according to an embodiment of the present application; Fig. 9 is a front view of the conveying assembly structure according to an embodiment of the present application; Fig.10 is a partial cross-sectional view of the structure of the filter assembly, the conveying assembly and the dehumidification assembly according to an embodiment of the present application; Fig.11 is a partial exploded view of the structure of the gas distribution cylinder according to an embodiment of the present application; Fig.12 is a bottom exploded view of a spiral cylinder structure according to an embodiment of the present application; Fig.13 is a bottom view of the filter assembly and auxiliary assembly structure according to an embodiment of the present application; Fig.14 This is a front view of the structure of the gas distribution cylinder, the rotating rod and the auxiliary components according to the embodiment of the present application; Fig.15 is a bottom exploded view of the auxiliary component structure according to an embodiment of the present application; Fig.16 It is a cross-sectional view of the tank structure according to an embodiment of the present application.

[0020] Icons: 1. Tank; 2. Embedded frame; 3. Cylinder barrel; 4. Embedded barrel; 5. Filter assembly; 51. Sealed chamber; 52. Servo motor; 53. Spiral barrel; 54. Spiral filter; 55. Reciprocating screw; 56. Screw sleeve; 57. Large annular filter; 58. Push arm; 59. Small annular filter; 6. Heating assembly; 61. First driving bevel gear; 62. First driven bevel gear; 63. Concave rod rack; 64. Rotating sleeve; 65. Connecting rod; 66. Piston; 67. Five-way valve; 68. Heater; 7. Conveying assembly; 71. Y-type pipe; 72. Three-way pipe; 73 , L-shaped tube; 74, three-way joint; 75, rotary joint; 76, connecting joint; 77, rotating rod; 8, dehumidification component; 81, air distribution cylinder; 82, hollow channel; 83, injection rack; 84, flow equalizing plate; 85, injection port; 86, reserved cavity; 87, injection hole; 9, auxiliary component; 91, feeding pipe; 92, spoiler blade; 93, second driving bevel gear; 94, second driven bevel gear; 95, stirring blade; 96, guide blade; 10, sliding groove; 11, spoiler blade; 12, guide seat; 13, intake pipe; 14, discharge pipe; 15, exhaust pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] like Figure 1-Figure 16 As shown, a gas purification device for a natural gas field wellhead according to an embodiment of the present application comprises: a tank body 1, the top and bottom of the inner cavity of the tank body 1 are fixedly connected with an embedded frame 2, and the tops of both sides of the tank body 1 are fixedly connected with a cylinder barrel 3, and an embedded barrel 4 is arranged at the center of the inner cavity of the tank body 1; The bottom of the left side of the tank body 1 is connected with an air inlet pipe 13, which is convenient for injecting gas from the gas field wellhead into the bottom space of the tank body 1, and the bottom of the right side of the tank body 1 is connected with a discharge pipe 14, which is used to discharge the particulate impurities that fall and accumulate in the bottom space of the tank body 1, and the air inlet pipe 13 and the discharge pipe 14 are both provided with a first one-way valve, and the air inlet pipe 13 and the discharge pipe 14 are controlled by a single channel, and the inner cavity of the tank body 1 is provided with a filter component 5, and the inner cavity of the cylinder barrel 3 is provided with a heating component 6; Conveying components 7 are provided on both sides of the heating component 6 , and a dehumidification component 8 used in conjunction with the filtering component 5 is provided in the inner cavity of the tank body 1 .

[0029] like Figures 5 to 12 As shown, the filter assembly 5 includes a sealed chamber 51, which is opened around the inner chamber of the tank body 1 near the bottom of the embedded cylinder 4, and a servo motor 52 is fixedly connected to the center of the top of the tank body 1, and the servo motor 52 provides a unified driving source. The output shaft of the servo motor 52 is fixedly connected to a spiral cylinder 53, and a spiral filter screen 54 is embedded on the outer side of the spiral cylinder 53. The rotating spiral cylinder 53 and the spiral filter screen 54 are used to spirally transport and spirally filter the gas field wellhead gas in the space above the tank body 1 to prevent the gas field wellhead gas from accumulating in the space above the tank body 1, and also to improve the filtering adequacy of the gas field wellhead gas. The bottom of the spiral cylinder 53 is fixedly connected to a reciprocating screw 55 that rotates with the embedded cylinder 4, and the reciprocating screw The surface wall of 55 is threadedly connected with a screw sleeve 56, and a large annular filter screen 57 is fixedly connected to the outer side of the screw sleeve 56. The reciprocating screw 55, the screw sleeve 56 and the large annular filter screen 57 perform reciprocating lifting dynamic filtration on the gas field wellhead gas in the upper space of the tank body 1, further improving the filtering effect of the gas field wellhead gas, and the large annular filter screen 57 is fixedly connected with a push arm 58 on all sides, and a small annular filter screen 59 that is slidably matched with the sealing chamber 51 is fixedly connected to the bottom of the push arm 58. Based on the premise of partitioning, the push arm 58, the small annular filter screen 59 and the sealing chamber 51 perform reciprocating lifting dynamic filtration on the gas field wellhead gas in the lower space of the tank body 1 again, further enhancing the filtering effect of the gas field wellhead gas and improving the cleanliness of the gas field wellhead gas; The spiral filter 54 and the large annular filter 57 both adopt a diamond mesh design, and the small annular filter 59 adopts a honeycomb mesh design, which is convenient for distinguishing the spiral filter 54, the large annular filter 57 and the small annular filter 59, and also for filtering particulate impurities of different volumes and shapes mixed in the gas at the wellhead of the gas field. A sliding groove 10 that slides with the large annular filter 57 is provided in an annular manner on the inner wall of the tank body 1 near the embedded cylinder 4, which plays a sliding limit compensation for the reciprocating lifting of the large annular filter 57 and improves the lifting stability of the large annular filter 57. The upper and lower sides of the inner cavity of the tank body 1 near the sealing cavity 51 are fixedly connected with a guide seat 12 that is fixedly matched with the embedded cylinder 4, which plays a guiding role for the gas at the wellhead of the gas field, and reserved circular openings that are connected and matched with the sealing cavity 51 are provided around the guide seat 12, which is conducive to the gas at the wellhead of the gas field entering the sealing cavity 51.

[0030] The heating assembly 6 includes a first driving bevel gear 61, which is fixed to the output shaft of the servo motor 52, and the teeth of the first driving bevel gear 61 are meshed with a first driven bevel gear 62. The first driven bevel gear 62 is matched with the transmission of two sets of first driving bevel gears 61 and first driven bevel gears 62. The inner cavity of the first driven bevel gear 62 is fixedly connected to a concave rod frame 63 used in conjunction with the cylinder barrel 3, and the center of the concave rod frame 63 is rotatably connected to a rotating sleeve 64, which is fixedly connected to the rotating sleeve 64. A connecting rod 65 is connected, and the other end of the connecting rod 65 is hinged with a piston 66 that slides with the cylinder barrel 3. The two groups of concave rod frames 63, the rotating sleeve 64, the connecting rod 65 and the piston 66 reciprocate to work. The exhaust port of the cylinder barrel 3 is connected with a five-way valve 67, and the outer end of the five-way valve 67 is connected with a heater 68 that is fixedly matched with the tank body 1. The two-way pressurized gas generated in the two groups of cylinder barrels 3 is combined through the two groups of five-way valves 67 and the heat source generated by the two groups of heaters 68 to form a pressurized heat source; The concave rod frame 63 is fixedly connected with spoiler blades 11 used in conjunction with the embedded frame 2 around the four sides near the first driving bevel gear 61, and the spoiler blades 11 are designed in a quarter-circle state, which plays a spoiler and discharge role for the gas field wellhead gas that has completed purification and dehumidification work in the space above the tank body 1, so as to prevent the gas field wellhead gas from accumulating in the space above the tank body 1.

[0031] The conveying assembly 7 includes a Y-shaped tube 71, which is connected to both ends of the five-way valve 67, and one end of the Y-shaped tube 71 away from the five-way valve 67 is connected to a three-way tube 72, and the top of the right side of the tank body 1 is connected to an exhaust port used in conjunction with the three-way tube 72, and a second one-way valve is provided on the exhaust port, and the top of the three-way tube 72 is connected to the exhaust pipe 15, which is conducive to the smooth discharge of the gas field wellhead gas after purification and dehumidification. The booster heat source is composed of two groups of Y-shaped tubes 71 and three-way tubes 72 to quickly heat and dehumidify the gas field wellhead gas after purification, and quickly discharge the gas field wellhead gas after purification and dehumidification through the exhaust pipe 15. To facilitate discharge and prevent the gas from clogging at the wellhead of the gas field from clogging in the exhaust pipe 15, the bottom end of the five-way valve 67 is connected to an L-shaped tube 73, and the end of the L-shaped tube 73 away from the five-way valve 67 is connected to a three-way joint 74, the top of the three-way joint 74 is connected to a rotary joint 75, and the inner cavity of the rotary joint 75 is rotatably connected to a connecting joint 76, and the rotary joint 75 and the connecting joint 76 are in an intercommunication state, and a rotating rod 77 is provided at the top of the connecting joint 76, and the L-shaped tube 73, the three-way joint 74, the rotary joint 75, the connecting joint 76 and the rotating rod 77 quickly transport the combined pressurized heat source to provide a heat source supply for the dehumidification operation of the gas field wellhead gas.

[0032] The dehumidification assembly 8 includes an air distribution cylinder 81, which is embedded in the inner cavity of the tank body 1 near the center of the sealed cavity 51 and fixedly connected to the rotating rod 77, and the reciprocating screw rod 55, the rotating rod 77 and the inner cavity of the air distribution cylinder 81 are all provided with a hollow channel 82 used in conjunction with the connecting joint 76, and the air distribution cylinder 81 is connected to the injection rack 83 on all sides, and the outer end of the injection rack 83 is embedded with a flow equalizing plate 84, and the sealed cavity 51 is provided with a side near the injection rack 83. A spray port 85 used in conjunction with the flow equalizing plate 84 is provided, and the air distribution cylinder 81, the hollow channel 82, the injection rack 83, the flow equalizing plate 84 and the injection rack 83 are connected to the inner cavity of the tank body 1. The port 85 performs zoned heating and dehumidification treatment on the gas field wellhead gas in the lower part of the tank body 1 to avoid dehumidification omission of the gas field wellhead gas, and the inner cavity of the spiral cylinder 53 is provided with a reserved cavity 86 which is connected and coordinated with the hollow channel 82, and the spiral cylinder 53 is surrounded by injection holes 87 which are used in conjunction with the spiral filter 54. The reserved cavity 86 and the injection holes 87 heat and dehumidify the gas field wellhead gas in the upper part of the tank body 1 while filtering and conveying it. Based on the premise of zoned treatment, a combination of double filtration and rapid dehumidification is adopted to achieve efficient purification and dehumidification effects on the gas field wellhead gas.

[0033] like Figures 13 to 15As shown, during the pretreatment of the gas field wellhead gas, the particulate impurities after the gas field wellhead gas purification treatment will fall to the bottom of the tank body 1, and the mixing method cannot be used to stir and flocculate the particulate impurities and the flocculant, which also causes the particulate impurities to accumulate and gather at the bottom of the tank body 1, which is not conducive to the particulate impurity molding and feeding work. The bottom of the inner cavity of the tank body 1 is provided with an auxiliary component 9 used in conjunction with the embedded frame 2, and the auxiliary component 9 includes a feeding pipe 91, which is connected to the bottom of the tank body 1 near the air inlet pipe 13, and the flocculant is added to the bottom space of the inner cavity of the tank body 1, and the rotating rod 77 is fixedly connected to the bottom of the air distribution cylinder 81 with a spoiler blade 92 used in conjunction with the air inlet pipe 13, and the rotating rod 77 drives the spoiler blade 92 to rotate at the bottom of the tank body 1. The spoiler blade 92 in the rotating state will turbulently process the gas field wellhead gas entering from the air inlet pipe 13 upward to prevent the gas field wellhead gas from accumulating in the bottom space of the inner cavity of the tank body 1; The rotating rod 77 is fixedly connected to the bottom of the spoiler blade 92 with a second driving bevel gear 93 used in conjunction with the inner frame 2, and the teeth of the second driving bevel gear 93 are meshed with a second driven bevel gear 94. The inner cavities of the three groups of second driven bevel gears 94 are fixedly connected with stirring blades 95 that rotate in conjunction with the inner frame 2. The rotating rod 77 drives the stirring blades 95 on the three groups of second driven bevel gears 94 to rotate synchronously through the second driving bevel gear 93, and mixes the particulate impurities that fall to the bottom of the inner cavity of the tank body 1, so that the particulate impurities and the added flocculant are fully flocculated, and the particulate impurities are solidified and formed to prevent light particulate impurities from floating to the space above the tank body 1, and the rotating rod 77 is fixedly connected to the bottom of the inner frame 2 with a guide blade 96 used in conjunction with the discharge pipe 14, and the particulate impurities after solidification and flocculation are rotated and guided to prevent the particulate impurities from clogging in the bottom space of the tank body 1, which is beneficial to the discharge of the particulate impurities.

[0034] Specifically, the working principle of the gas purification device for the wellhead of a natural gas field is as follows: first, the wellhead gas of the hot gas field is supplied into the bottom space of the inner cavity of the tank body 1 in one direction through the air inlet pipe 13, and then the servo motor 52 is controlled to start and drive the spiral filter 54 on the spiral cylinder 53 to rotate, and the spiral cylinder 53 drives the reciprocating screw rod 55, the air distribution cylinder 81 and the rotating rod 77 to rotate synchronously, and the reciprocating screw rod 55 drives the screw rod sleeve 56 to perform reciprocating lifting motion on the embedded cylinder 4, and the screw rod sleeve 56 drives the large annular filter 57 to perform reciprocating dynamic filtering in the sliding groove 10, and at the same time, the large annular filter 57 that reciprocates and lifts The net 57 drives the small annular filter screens 59 on the five groups of push arms 58 to perform synchronous actions in the five groups of sealed chambers 51. At the same time, the rotating rod 77 drives the turbulent blades 92 to rotate. The turbulent blades 92 in the rotating state will turbulently blow the gas field wellhead gas in the bottom space of the inner cavity of the tank body 1 from the air inlet pipe 13 unidirectionally. Then, the gas field inlet gas transported upward is guided by the guide seat 12, and then passes through the five groups of sealed chambers 51 and the sliding groove 10 areas in sequence, and then the five groups of small annular filter screens 59, the large annular filter screen 57 and the rotating spiral filter screen 54 in the reciprocating lifting motion dynamically filter the gas field inlet gas in the zones. When the servo motor 52 drives the spiral barrel 53 to rotate, it also drives the first driving bevel gear 61 to rotate synchronously. The first driving bevel gear 61 drives the concave rod racks 63 on the two sets of first driven bevel gears 62 to rotate synchronously. The two sets of concave rod racks 63 drive the two sets of spoiler blades 11 to spoil the gas field inlet gas that has reached the top space of the tank body 1 and completed the purification to the two sets of three-way pipes 72 on the exhaust ports. At the same time, the two sets of concave rod racks 63 drive the pistons 66 on the two sets of connecting rods 65 through the two sets of rotating sleeves 64 to perform reciprocating work in the two sets of cylinder barrels 3, and the boost pressure gas generated in the two sets of cylinder barrels 3 is supplied to the two sets of five-way valves 67, and the two sets of heaters 68 are controlled in advance to open and supply the generated heat source to the two sets of five-way valves 67, so that the two-way boost pressure gas and the two-way heat source are merged in the two sets of five-way valves 67 to form a two-way boost heat source. The two-way pressurized heat sources formed in the two groups of five-way valves 67 are supplied to the two groups of three-way pipes 72 through the two groups of Y-shaped pipes 71, and the gas field inlet gas after purification in the two groups of three-way pipes 72 is heated and dehumidified while being pressurized and exhausted through the two groups of exhaust pipes 15. At the same time, the two-way pressurized heat sources formed in the two groups of five-way valves 67 are supplied to the rotating rod 77, the gas distribution cylinder 81 and the hollow channel 82 in the reciprocating screw rod 55 by the two groups of L-shaped pipes 73 through the three-way joints 74, the rotating joints 75 and the connecting joints 76, and then reach the pressurized heat source in the gas distribution cylinder 81 and pass through the five groups of injection racks 83. After the equalizing plate 84 has equalized the flow, the rotating air distribution cylinder 81 injects the equalized pressurized heat source into the five sealed chambers 51 through the injection port 85 in a swirl flow, and the gas field inlet gas in the five sealed chambers 51 that is in dynamic zoning filtration is heated and dehumidified in different zones. At the same time, the pressurized heat source in the hollow channel 82 is also supplied to the reserved cavity 86 in the spiral cylinder 53. The pressurized heat source in the reserved cavity 86 in the rotating spiral cylinder 53 is injected into the space above the tank body 1 through the injection hole 87 in a swirl flow, and the gas field inlet gas waiting to be discharged after the purification treatment is heated and dehumidified again. During the gas purification and dehumidification of the gas field wellhead, the particulate impurities in the gas field wellhead gas after filtration and dehumidification fall to the bottom of the tank body 1, and then the flocculant is added to the bottom space of the tank body 1 through the feeding pipe 91. At the same time, the rotating rod 77 also drives the second driving bevel gear 93 to rotate, and the second driving bevel gear 93 drives the stirring blades 95 on the three groups of second driven bevel gears 94 to rotate in the bottom space of the tank body 1. The three groups of stirring blades 95 in the rotating state evenly mix the particulate impurities and flocculants in the bottom space of the tank body 1, so that the fallen particulate impurities are solidified, and then the solidified particulate impurities are discharged through the discharge pipe 14 by the guide blades 96 that rotate synchronously with the rotating rod 77.

[0035] It should be noted that the specific model specifications of the servo motor 52 and the heater 68 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0036] The power supply and principle of the servo motor 52 and the heater 68 are clear to those skilled in the art and will not be described in detail here.

[0037] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A gas purification device for a natural gas field wellhead, characterized in that: include: A tank body (1), wherein the top and bottom of the inner cavity of the tank body (1) are fixedly connected to an embedded frame (2), the tops of both sides of the tank body (1) are fixedly connected to a cylinder barrel (3), and an embedded barrel (4) is arranged at the center of the inner cavity of the tank body (1); The inner cavity of the tank body (1) is provided with a filter assembly (5), and the inner cavity of the cylinder barrel (3) is provided with a heating assembly (6); Conveying components (7) are provided on both sides of the heating component (6), and a dehumidification component (8) is provided in the inner cavity of the tank body (1).

2. The gas purification device for a natural gas field wellhead according to claim 1, characterized in that: The filter assembly (5) comprises a sealed cavity (51), the sealed cavity (51) being arranged around the inner cavity of the tank body (1) near the bottom of the embedded cylinder (4), and a servo motor (52) being fixedly connected at the center of the top of the tank body (1), the output shaft of the servo motor (52) being fixedly connected to a spiral cylinder (53), and a spiral filter screen (54) being embedded on the outer side of the spiral cylinder (53), a reciprocating screw rod (55) being fixedly connected to the bottom of the spiral cylinder (53) and being rotatably matched with the embedded cylinder (4), and a screw rod sleeve (56) being threadedly connected to the surface wall of the reciprocating screw rod (55), a large annular filter screen (57) being fixedly connected to the outer side of the screw rod sleeve (56), and push arms (58) being fixedly connected to the four sides of the large annular filter screen (57), and a small annular filter screen (59) being slidably matched with the sealed cavity (51) being fixedly connected to the bottom of the push arm (58).

3. A gas purification device for a natural gas field wellhead according to claim 2, characterized in that: The heating component (6) comprises a first driving bevel gear (61), the first driving bevel gear (61) being fixed on the output shaft of the servo motor (52), and the teeth of the first driving bevel gear (61) being meshed with a first driven bevel gear (62), the inner cavity of the first driven bevel gear (62) being fixedly connected with a concave rod frame (63) used in conjunction with the cylinder barrel (3), and a rotating sleeve (64) being rotatably connected at the center of the concave rod frame (63), a connecting rod (65) being fixedly connected to the rotating sleeve (64), and the other end of the connecting rod (65) being hingedly connected with a piston (66) slidably engaged with the cylinder barrel (3), an exhaust port of the cylinder barrel (3) being connected with a five-way valve (67), and the outer end of the five-way valve (67) being connected with a heater (68) fixedly engaged with the tank body (1).

4. A gas purification device for a natural gas field wellhead according to claim 3, characterized in that: The conveying assembly (7) comprises a Y-shaped tube (71), wherein the Y-shaped tube (71) is connected to both ends of a five-way valve (67), and one end of the Y-shaped tube (71) away from the five-way valve (67) is connected to a three-way tube (72), the bottom end of the five-way valve (67) is connected to an L-shaped tube (73), and one end of the L-shaped tube (73) away from the five-way valve (67) is connected to a three-way joint (74), the top end of the three-way joint (74) is connected to a rotating joint (75), and the inner cavity of the rotating joint (75) is rotatably connected to a connecting joint (76), and the rotating joint (75) and the connecting joint (76) are in an intercommunication state, and a rotating rod (77) is provided at the top end of the connecting joint (76).

5. The gas purification device for a natural gas field wellhead according to claim 4, characterized in that: The dehumidification assembly (8) comprises an air distribution cylinder (81), which is embedded in the inner cavity of the tank body (1) near the center of the sealed cavity (51) and fixedly connected to the rotating rod (77), and the inner cavities of the reciprocating screw rod (55), the rotating rod (77) and the air distribution cylinder (81) are all provided with a hollow channel (82) for use with the connecting joint (76), the air distribution cylinder (81) is connected to an injection rack (83) on all sides, and a flow equalizing plate (84) is embedded at the outer end of the injection rack (83), a spray port (85) for use with the flow equalizing plate (84) is provided on one side of the sealed cavity (51) near the injection rack (83), and a reserved cavity (86) for use with the hollow channel (82) is provided in the inner cavity of the spiral cylinder (53), and a spray hole (87) for use with the spiral filter (54) is provided on all sides of the spiral cylinder (53).

6. The gas purification device for a natural gas field wellhead according to claim 5, characterized in that: The spiral filter (54) and the large annular filter (57) both adopt a diamond mesh design, and the small annular filter (59) adopts a honeycomb mesh design, and a sliding groove (10) is provided in an annular shape on the inner wall of the tank body (1) close to the embedded cylinder (4) to slide with the large annular filter (57).

7. A gas purification device for a natural gas field wellhead according to claim 6, characterized in that: A flow guide seat (12) fixedly matched with the embedded cylinder (4) is fixedly connected to the upper and lower sides of the inner cavity of the tank body (1) near the sealing cavity (51), and a reserved circular opening communicating with the sealing cavity (51) is provided around the flow guide seat (12).

8. The gas purification device for a natural gas field wellhead according to claim 7, characterized in that: The concave rod frame (63) is fixedly connected with spoiler blades (11) for use with the embedded frame (2) on all sides near the first driving bevel gear (61), and the spoiler blades (11) are designed in a quarter-circle state.

9. A gas purification device for a natural gas field wellhead according to claim 8, characterized in that: The bottom of the left side of the tank body (1) is connected to an air inlet pipe (13), and the bottom of the right side of the tank body (1) is connected to a discharge pipe (14), and both the air inlet pipe (13) and the discharge pipe (14) are provided with a first one-way valve.

10. A gas purification device for a natural gas field wellhead according to claim 9, characterized in that: The top of the right side of the tank body (1) is connected to an exhaust port used in conjunction with a three-way pipe (72), a second one-way valve is provided on the exhaust port, and the top of the three-way pipe (72) is connected to an exhaust pipe (15).

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