A filter assembly for high pressure natural gas purification

Abstract

The utility model discloses a filter assembly for high pressure natural gas purification relates to natural gas purification equipment technical field, including jar body, install the inner bushing in jar body, install filter core subassembly in the inner bushing, and its filter core subassembly includes upper baffle, lower baffle, support rod, upper baffle, support rod, helical flow guide plate and filter plate, and the upper baffle is located the inner bushing top, and the lower baffle is located the inner bushing bottom, and the support rod is located between upper baffle and lower baffle, and helical flow guide plate is connected with support rod, and the second vertical through -slot is seted up on the flow guide plate, and the filter plate is inserted in the first vertical through -slot and the second vertical through -slot, and natural gas forms centrifugal flow through helical flow path, and gas approaches vertical penetration multilayer filter plate, forms " centrifugal separation + radial intercept " dual filtration.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas purification equipment, specifically a filter component for high-pressure natural gas purification. Background Technology

[0002] Natural gas, as an important clean energy source, often contains solid particles (such as sand and pipeline corrosion) during its extraction, transportation, and use. These impurities can damage downstream equipment (such as compressors and gas turbines), reduce combustion efficiency, and increase emissions. Therefore, high-pressure natural gas must undergo efficient purification treatment before entering gas pipelines or storage facilities.

[0003] However, traditional gas purification technology, which uses flat-lay filters, is prone to clogging and has high maintenance costs. Gas passes through multiple horizontal filters in one direction, and impurities tend to accumulate on the surface, causing a rapid increase in pressure drop. This requires frequent filter replacements, and the filter is welded to the tank as a whole. Replacement requires stopping the machine and disassembling the entire filtration system, resulting in long maintenance cycles and impacting production efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a filter assembly for high-pressure natural gas purification. The spiral flow path is formed by the spiral guide plate and the inner wall of the inner liner. The gas penetrates the multi-layer filter plate to form a dual purification of "centrifugal separation + radial interception".

[0005] The objective of this utility model is achieved through the following technical solution: A filter assembly for high-pressure natural gas purification includes a tank body, an inner liner installed in the tank body, and a removable filter element assembly installed in the inner liner. The filter element assembly includes: The upper partition has an exhaust channel and a first vertical through groove, and the upper partition is located at the top of the inner liner. The lower partition has an air intake channel and is located at the bottom of the inner liner. A support rod is located between the upper partition and the lower partition, and both ends of the support rod are fixedly connected to the center of the upper partition and the lower partition, respectively. A spiral-shaped guide plate is fixedly connected to a support rod, and a second vertical through groove is provided on the guide plate; The filter plate is sequentially inserted into the first vertical through groove and the second vertical through groove and then abuts against the lower partition plate.

[0006] Furthermore, the filter plate includes a frame, and a removable filter screen is installed inside the frame.

[0007] Furthermore, an annular retaining ring is fixedly connected inside the tank body, and the inner liner is threadedly connected to the tank body, with the bottom of the inner liner abutting against the annular retaining ring.

[0008] Furthermore, the tank body is provided with a detachable cover plate, an air intake pipe is installed on the lower side of the tank body, and an exhaust pipe is installed on the cover plate.

[0009] Furthermore, the tank body and the cover plate are connected by fasteners, and four fasteners are provided, which are arranged in a circumferential array. The cover plate is provided with mounting holes for the fasteners to pass through.

[0010] Furthermore, the fastener includes a hinge seat and a threaded rod, the hinge seat being fixedly connected to the side of the tank body, the bottom of the threaded rod being connected to the hinge seat, and a lock nut being threaded to one end of the threaded rod that passes through the mounting hole.

[0011] Furthermore, an annular protrusion is installed on the upper end face of the tank, and a receiving groove that mates with the annular protrusion is opened at the bottom of the cover plate.

[0012] The beneficial effects of this utility model are: In this application, the spiral guide plate in this embodiment forms a spiral flow path for natural gas with the inner wall of the inner liner. The natural gas forms a centrifugal flow along the spiral guide plate, and large particulate impurities are pre-separated under the action of centrifugal force. The gas then tends to penetrate the multi-layer filter plate, forming a dual purification of "centrifugal separation + radial interception". The spiral flow channel prolongs the contact time and reduces the impurity load per unit area. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the tank body of this utility model; Figure 3 This is a schematic diagram of the filter element assembly structure of this utility model; Figure 4 This utility model Figure 3 A schematic diagram of the side view structure; In the diagram, 1. Tank body; 2. Inlet pipe; 3. Exhaust pipe; 4. Cover plate; 401. Mounting hole; 402. Receiving groove; 5. Inner liner; 6. Filter element assembly; 61. Upper partition plate; 610. Exhaust channel; 611. First vertical through groove; 62. Lower partition plate; 620. Inlet channel; 63. Support rod; 64. Guide plate; 640. Second vertical through groove; 65. Filter plate; 650. Frame; 651. Filter screen plate; 7. Annular retaining ring; 8. Fastener; 81. Hinge seat; 82. Threaded rod; 83. Locking nut; 9. Annular protrusion. Detailed Implementation

[0014] like Figures 1 to 4 As shown, a filter assembly for high-pressure natural gas purification is provided, including a tank body 1, an inner liner 5 installed in the tank body 1, an annular retaining ring 7 fixedly connected inside the tank body 1, the inner liner 5 being threadedly connected to the tank body 1, the bottom of the inner liner 5 being supported on the annular retaining ring 7, the annular retaining ring 7 supporting the inner liner 5 and keeping the position of the inner liner 5 unchanged in the tank body 1, and a detachable filter element assembly 6 installed in the inner liner 5, the filter element assembly 6 being used to filter and separate large particulate impurities, its specific structure being as follows, including an upper partition 61, The lower partition 62, support rod 63, spiral guide plate 64, and filter plate 65 are connected as follows: an exhaust channel 610 is provided on the upper partition 61, and the upper partition 61 is located at the top of the inner liner 5; an air intake channel 620 is provided on the lower partition 62, and the lower partition 62 is located at the bottom of the inner liner 5; the support rod 63 is located between the upper partition 61 and the lower partition 62, and both ends of the support rod 63 are fixedly connected to the center of the upper partition 61 and the lower partition 62, respectively. A spiral-shaped guide plate 64 spirals upwards along the surface of the support rod 63. The guide plate 64 is fixedly connected to the support rod 63. A second vertical through groove 640 is formed on the guide plate 64, and a first vertical through groove 611 is formed on the upper partition plate 61. The subsequent filter plate 65 passes through the first vertical through groove 611 and the second vertical through groove 640 in sequence and abuts against the lower partition plate 62. The filter plate 65 includes a frame 650, and the frame 650 is fastened to the filter screen plate 651 by bolts and nuts. The spiral-shaped guide plate 64... 4. The inner wall of the inner liner 5 forms a spiral flow path for natural gas, separating large particles of impurities through centrifugal force and extending the filtration path. The filter plate 65 is vertically inserted into the through groove of the guide plate 64, forming a multi-layer radial filtration surface, increasing the effective filtration area, and avoiding the clogging problem of traditional flat-laid filter screens. The filter plate 65 is installed in the guide plate 64 by plugging in, which is convenient for subsequent individual disassembly. The double-layer filter screen 651 (such as coarse filter + fine filter) can be replaced with bolts and nuts to adapt to different purification needs. In use, natural gas enters the tank 1 through the inlet pipe 2. Natural gas continuously flows in, and then the flowing natural gas enters through the inlet channel 620 and rises along the spiral flow path. At the same time, the filter plate 65 filters layer by layer. Under the dual separation of centrifugal force and radial interception of the filter screen 651, large particles of impurities are filtered and separated. The filtered natural gas is discharged into the gas pipeline for further treatment through the exhaust channel 610 and the exhaust pipe 3.

[0015] like Figure 1 and Figure 2As shown, the tank body 1 and the cover plate 4 are detachably connected by fasteners 8. Four fasteners 8 are arranged in a circumferential array. Each fastener 8 includes a hinge seat 81 and a threaded rod 82. The hinge seat 81 is fixedly connected to the side of the tank body 1, and the bottom of the threaded rod 82 is connected to the hinge seat 81. A locking nut 83 is threaded onto one end of the threaded rod 82, which passes through the mounting hole 401. A mounting hole 401 is also provided at a corresponding position on the cover plate 4, through which the threaded rod 82 passes. After 01, the cover plate 4 is fastened to the tank body 1 by the locking nut 83. The tank body 1 and the cover plate 4 are sealed with metal. For example, an annular protrusion 9 is installed on the upper end face of the tank body 1. The cross-section of the annular protrusion 9 is an isosceles trapezoid. The bottom of the cover plate 4 is provided with a receiving groove 402 that cooperates with the annular protrusion 9. By cooperating with the annular protrusion 9 through the receiving groove 402, it can be ensured that the cover plate 4 will not shake on the tank body 1. In addition, when the threaded rod 82 and the locking nut 83 are engaged and locked, the inner wall of the receiving groove 402 of the cover plate 4 continuously and seamlessly abuts against the surface of the annular protrusion 9.

[0016] In summary, this embodiment utilizes natural gas to form a centrifugal flow along the spiral guide plate 64, where large particles of impurities are pre-separated under centrifugal force. The gas then penetrates the multi-layer filter plate 65 (coarse filtration + fine filtration), forming a dual purification mechanism of "centrifugal separation + radial interception," which improves filtration efficiency by more than 30% (compared to the traditional unidirectional flow design). The filter plate 65 is vertically inserted into the through groove of the guide plate 64, and the airflow impacts the filter screen at an angle close to 90°, preventing impurity accumulation. The spiral flow channel extends the contact time, reducing the impurity load per unit area. The upper and lower partitions are fixed as a whole by the support rod 63 and the nut, and can be removed from the inner bushing 5 along with the guide plate 64 and the filter plate 65, making replacement and disassembly convenient. The annular protrusion 9 (trapezoidal cross section) cooperates with the inclined surface of the receiving groove 402 to form a metal-to-metal gapless seal under the pressure of the locking nut 83. The hinged threaded rod 82 (4 sets of circumferential distribution) allows for rapid opening and closing, and after locking, it forms a uniform clamping force to prevent the cover plate 4 from tilting and leaking.

Claims

1. A filter assembly for high-pressure natural gas purification, characterized in that, Includes a tank (1), in which an inner liner (5) is installed, and in which a removable filter element assembly (6) is installed, the filter element assembly (6) comprising: The upper partition (61) is provided with an exhaust channel (610) and a first vertical through groove (611), and the upper partition (61) is located at the top of the inner liner (5); The lower partition (62) has an air intake channel (620) and is located at the bottom of the inner liner (5). Support rod (63), the support rod (63) is located between the upper partition (61) and the lower partition (62), and the two ends of the support rod (63) are fixedly connected to the center of the upper partition (61) and the lower partition (62) respectively; A spiral-shaped guide plate (64) is fixedly connected to a support rod (63), and a second vertical through groove (640) is provided on the guide plate (64). The filter plate (65) is inserted sequentially through the first vertical through groove (611) and the second vertical through groove (640) and then abuts against the lower partition plate (62).

2. The filter assembly for high-pressure natural gas purification according to claim 1, characterized in that, The filter plate (65) includes a frame (650) in which a removable filter screen (651) is installed.

3. The filter assembly for high-pressure natural gas purification according to claim 1, characterized in that, The tank body (1) is fixedly connected to an annular retaining ring (7), and the inner liner (5) is threadedly connected to the tank body (1), with the bottom of the inner liner (5) abutting against the annular retaining ring (7).

4. A filter assembly for high-pressure natural gas purification according to claim 1, characterized in that, A cover plate (4) is detachably connected to the tank (1), an air inlet pipe (2) is installed on the lower side of the tank (1), and an exhaust pipe (3) is installed on the cover plate (4).

5. A filter assembly for high-pressure natural gas purification according to claim 4, characterized in that, The tank body (1) and the cover plate (4) are connected by fasteners (8). There are four fasteners (8), and the four fasteners (8) are arranged in a circular array. The cover plate (4) has mounting holes (401) for the fasteners (8) to pass through.

6. A filter assembly for high-pressure natural gas purification according to claim 5, characterized in that, The fastener (8) includes a hinge (81) and a threaded rod (82). The hinge (81) is fixedly connected to the side of the tank body (1). The bottom of the threaded rod (82) is connected to the hinge (81). A lock nut (83) is threaded to one end of the threaded rod (82) that passes through the mounting hole.

7. A filter assembly for high-pressure natural gas purification according to claim 6, characterized in that, The upper end face of the tank (1) is equipped with an annular protrusion (9), and the bottom of the cover plate (4) is provided with a receiving groove (402) that cooperates with the annular protrusion (9).

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