Natural gas pipeline impurity separation device with self-cleaning filter element

Abstract

The utility model discloses a natural gas pipeline impurity separation device with self -cleaning filter core relates to automatic cleaning technical field. The natural gas pipeline impurity separation device with self -cleaning filter core, including the separation cylinder, the separation cylinder one end is fixedly connected with the air inlet pipe, the separation cylinder other end is fixedly connected with the air outlet pipe, the air outlet pipe is fixedly connected with first control valve, the air outlet pipe is fixedly connected with reverse flushing pipe, reverse flushing pipe is fixedly connected with second control valve, reverse flushing pipe one end is fixedly connected with high pressure gas source device, and electric backflushing mechanism is cooperated with reverse flushing pipe, and the automatic cleaning under the trigger of pressure difference sensor can complete single cleaning within thirty seconds, can remove the filter core surface impurity in time, solve the pressure drop problem caused by traditional filter core blockage, after dust containing gas test, the dust concentration is fifty milligrams per cubic meter, and the filter core service life is prolonged from three months to twelve months, and the replacement frequency and cost are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of automatic cleaning technology, and in particular to a natural gas pipeline impurity separation device with a self-cleaning filter element. Background Technology

[0002] During the natural gas transportation process, there will inevitably be contaminants such as solid particles and liquid impurities in the pipeline. If these impurities are not separated in time, they will cause wear, blockage and corrosion to pipelines, valves, instruments and other equipment, affecting the safety and stability of natural gas transportation and increasing equipment maintenance costs.

[0003] Traditional natural gas pipeline impurity separation devices mostly use a single filter element, which is prone to clogging, leading to increased pressure drop and requiring frequent replacement or manual cleaning. This not only affects normal transportation but also increases maintenance workload and costs. Furthermore, traditional filter elements have limited filtration accuracy, making it difficult to effectively remove tiny impurities and resulting in poor separation performance.

[0004] To address these issues, some separation devices with cleaning functions have emerged, but the cleaning effect is not ideal. Either the cleaning is not thorough, or the cleaning process is complicated and time-consuming, failing to meet the demand for efficient and stable natural gas transportation.

[0005] This natural gas pipeline impurity separation device with a self-cleaning filter element uses a combination of a spiral guide plate and a high-precision sintered metal mesh filter element for separation. Combined with an electric backwashing mechanism and an automatic cleaning function triggered by a differential pressure sensor, it effectively solves the pressure drop problem caused by filter element clogging in traditional devices. Tests have shown that it can significantly extend the service life of the filter element and reduce pressure drop loss, meeting the higher requirements of natural gas pipeline systems for impurity separation and equipment maintenance. Utility Model Content

[0006] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a natural gas pipeline impurity separation device with a self-cleaning filter element, which can solve the above-mentioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a natural gas pipeline impurity separation device with a self-cleaning filter element, comprising a separation cylinder, an inlet pipe fixedly connected to one end of the separation cylinder, an outlet pipe fixedly connected to the other end of the separation cylinder, and a first control valve fixedly connected to the outlet pipe;

[0008] A spiral guide plate is fixedly connected inside the separation cylinder. A filter element is provided on one side of the spiral guide plate. The filter element is fixedly connected inside the separation cylinder. A dirt collection chamber is opened at the bottom of the separation cylinder. An isolation plate is snapped into the dirt collection chamber. The isolation plate is located below the filter element. An impurity collection tank is fixedly connected to the bottom of the separation cylinder. The impurity collection tank is located directly below the dirt collection chamber.

[0009] A backwash pipe is fixedly connected to the air outlet pipe, a second control valve is fixedly connected to the backwash pipe, and a high-pressure air source device is fixedly connected to one end of the backwash pipe.

[0010] A motor is fixedly connected to the separation cylinder, and a transmission device is fixedly connected to the output end of the motor.

[0011] Preferably, the filter elements are arranged in three groups linearly inside the separation cylinder, and the filter elements are arranged sequentially along the gas flow direction inside the separation cylinder, with a gap between adjacent groups of filter elements.

[0012] Preferably, the transmission device includes a transmission shaft and a transmission gear. The transmission shaft is rotatably connected to the separator cylinder. The transmission shaft changes direction through the transmission gear. A sealing box is provided on the transmission gear. A scraper is fixedly connected to the transmission shaft. The scraper is located on one side of the filter element.

[0013] Preferably, the first control valve and the second control valve are solenoid valves.

[0014] Preferably, the spiral direction of the spiral guide plate is consistent with the flow direction of natural gas in the separation cylinder, and the edge of the spiral guide plate is in close contact with the inner wall of the separation cylinder.

[0015] Preferably, a drain valve is provided at the bottom of the impurity collection tank, and the drain valve is connected to the inside of the impurity collection tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The natural gas pipeline impurity separation device with self-cleaning filter element combines a spiral guide plate with a metal sintered mesh filter element. First, centrifugal force is used to separate some impurities, and then high-precision filter element is used for deep filtration, which significantly improves the impurity separation effect and can effectively remove impurities of different particle sizes in natural gas.

[0018] (2) The natural gas pipeline impurity separation device with self-cleaning filter element, the electric backwashing mechanism and the backwashing pipe work together to automatically clean under the trigger of the differential pressure sensor. A single cleaning can be completed within 30 seconds, which can remove impurities on the filter element surface in time and solve the pressure drop problem caused by the blockage of traditional filter elements. After dust gas test, the dust concentration is 50 mg per cubic meter. The service life of the filter element is extended from three months to twelve months, which greatly reduces the replacement frequency and cost.

[0019] (3) The natural gas pipeline impurity separation device with self-cleaning filter element can clean the filter element impurities in time due to the self-cleaning function, keep the filter element unobstructed, reduce the pressure drop loss by 50%, reduce the energy loss in the natural gas transportation process, and ensure the operating efficiency of the pipeline system. The setting of the dirt collection chamber, impurity collection tank and isolation plate facilitates the collection and cleaning of impurities and prevents impurities from flowing back. The setting of the sealing box ensures the sealing of the transmission device and avoids natural gas leakage. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of a natural gas pipeline impurity separation device with a self-cleaning filter element according to the present invention.

[0022] Figure 2 This is a schematic diagram of a natural gas pipeline impurity separation device with a self-cleaning filter element according to the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of a natural gas pipeline impurity separation device with a self-cleaning filter element according to the present invention.

[0024] Figure 4 This is a cross-sectional schematic diagram of a natural gas pipeline impurity separation device with a self-cleaning filter element according to the present invention.

[0025] Reference numerals in the attached drawings: 1. Separator cylinder; 2. Inlet pipe; 3. Outlet pipe; 4. First control valve; 5. Spiral guide plate; 6. Filter element; 7. Sludge collection chamber; 8. Isolation plate; 9. Impurity collection tank; 10. Backwash pipe; 11. Second control valve; 12. High-pressure air source device; 13. Motor; 14. Transmission device; 15. Sealing box; 16. Scraper. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 this utility model.

[0028] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Please see Figure 1-4 This utility model provides a technical solution: a natural gas pipeline impurity separation device with a self-cleaning filter element, including a separation cylinder 1, an air inlet pipe 2 fixedly connected to one end of the separation cylinder 1, an air outlet pipe 3 fixedly connected to the other end of the separation cylinder 1, and a first control valve 4 fixedly connected to the air outlet pipe 3.

[0031] A spiral guide plate 5 is fixedly connected inside the separation cylinder 1. The spiral guide plate 5 uses centrifugal force to separate some impurities. A filter element 6 is set on one side of the spiral guide plate 5. The filter element 6 is made of metal sintered mesh. The filter element 6 is fixedly connected inside the separation cylinder 1. The filter element 6 is arranged in three linear sets inside the separation cylinder 1. The three sets of linearly arranged metal sintered mesh filter elements 6 perform deep filtration of natural gas and further intercept small impurities. A dirt collection chamber 7 is opened at the bottom of the separation cylinder 1. Under the guidance of the spiral guide plate 5, the natural gas moves in a spiral motion along the inner wall of the separation cylinder 1. Under the action of centrifugal force, some impurities in the natural gas are thrown towards the inner wall of the separation cylinder 1 and rotated to the dirt collection chamber 7 by the blades with the spiral motion. An isolation plate 8 is snapped into the dirt collection chamber 7. The isolation plate 8 is located below the filter element 6. An impurity collection tank 9 is fixedly connected to the bottom of the separation cylinder 1. The impurity collection tank 9 is located directly below the dirt collection chamber 7.

[0032] A backwash pipe 10 is fixedly connected to the air outlet pipe 3. A second control valve 11 is fixedly connected to the backwash pipe 10. A high-pressure air source device 12 is fixedly connected to one end of the backwash pipe 10. By closing the first control valve 4 and opening the second control valve 11, the high-pressure air source device 12 can pass high-pressure gas into the air outlet pipe 3 through the backwash pipe 10 to backwash the filter element 6.

[0033] A motor 13 is fixedly connected to the separator 1. A transmission device 14 is fixedly connected to the output end of the motor 13. The transmission device 14 includes a transmission shaft and a transmission gear. The transmission shaft is rotatably connected to the separator 1. The transmission shaft changes direction through the transmission gear. A sealing box 15 is provided on the transmission gear. A scraper 16 is fixedly connected to the transmission shaft. The scraper 16 is located on one side of the filter element 6. The motor 13 drives the scraper 16 to rotate through the transmission device 14, and scrapes and cleans the surface of the filter element 6 on one side.

[0034] The high-pressure gas source device 12 is a known technical means. For those skilled in the art, this technical means can be easily implemented without the need for creative experiments, so it will not be described in detail here.

[0035] Working principle: When natural gas enters the separator cylinder 1 through the inlet pipe 2, under the guidance of the spiral guide plate 5, the natural gas moves in a spiral motion along the inner wall of the separator cylinder 1. Under the action of centrifugal force, some impurities in the natural gas are thrown towards the inner wall of the separator cylinder 1, and are driven by the blades to rotate to the dirt collection chamber 7 along with the spiral motion.

[0036] After initial separation, the natural gas continues to flow to filter element 6. Three sets of linearly arranged metal sintered mesh filter elements 6 perform deep filtration of the natural gas, further intercepting tiny impurities. The filtered clean natural gas is transported to the subsequent pipeline through the gas outlet pipe 3. At this time, the first control valve 4 is in the open state.

[0037] When the differential pressure sensor detects that the pressure difference before and after the filter element 6 reaches the threshold, the automatic cleaning program is triggered. At this time, the first control valve 4 is closed, the second control valve 11 is opened, and the high-pressure air source device 12 introduces high-pressure gas into the air outlet pipe 3 through the reverse flushing pipe 10 to perform reverse flushing on the filter element 6.

[0038] At the same time, the motor 13 starts, and its output end drives the scraper 16 to rotate at a speed of 150 revolutions per minute through the transmission device 14. The scraper 16 scrapes and cleans the surface of the filter element 6 on one side.

[0039] The impurities removed during cleaning fall into the impurity collection tank 9 below through the dirt collection chamber 7. The isolation plate 8 can prevent impurities from flowing back in the non-cleaning state. A single cleaning takes thirty seconds. After cleaning is completed, the second control valve 11 is closed and the first control valve 4 is opened, and the device returns to normal filtration state.

[0040] The spiral guide plate 5 and the metal sintered mesh filter element 6 are combined to first separate some impurities using centrifugal force, and then filter deeply through the high-precision filter element 6, which significantly improves the impurity separation effect and can effectively remove impurities of different particle sizes from natural gas.

[0041] The electric backwashing mechanism works in conjunction with the backwash pipe 10 to automatically clean under the trigger of the differential pressure sensor. A single cleaning can be completed within 30 seconds, which can promptly remove impurities from the surface of the filter element 6 and solve the pressure drop problem caused by the clogging of the traditional filter element 6. After dust gas testing, the dust concentration is 50 milligrams per cubic meter, and the service life of the filter element 6 is extended from three months to twelve months, which greatly reduces the replacement frequency and cost.

[0042] Because the self-cleaning function can clean impurities from filter element 6 in a timely manner and keep filter element 6 unobstructed, the pressure drop loss is reduced by 50%, reducing energy loss during natural gas transportation and ensuring the operating efficiency of the pipeline system.

[0043] The inclusion of the sludge collection chamber 7, the impurity collection trough 9, and the isolation plate 8 facilitates the collection and cleaning of impurities and prevents impurity backflow. The sealing box 15 ensures the sealing of the transmission device 14 and prevents natural gas leakage.

[0044] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A natural gas pipeline impurity separation device with a self-cleaning filter element, comprising a separation cylinder (1), characterized in that: One end of the separator (1) is fixedly connected to an air inlet pipe (2), and the other end of the separator (1) is fixedly connected to an air outlet pipe (3). A first control valve (4) is fixedly connected to the air outlet pipe (3). A spiral guide plate (5) is fixedly connected inside the separation cylinder (1). A filter element (6) is provided on one side of the spiral guide plate (5). The filter element (6) is fixedly connected inside the separation cylinder (1). A dirt collection chamber (7) is opened at the bottom of the separation cylinder (1). An isolation plate (8) is snapped into the dirt collection chamber (7). The isolation plate (8) is located below the filter element (6). An impurity collection trough (9) is fixedly connected to the bottom of the separation cylinder (1). The impurity collection trough (9) is located directly below the dirt collection chamber (7). A backwash pipe (10) is fixedly connected to the air outlet pipe (3), a second control valve (11) is fixedly connected to the backwash pipe (10), and a high-pressure air source device (12) is fixedly connected to one end of the backwash pipe (10). A motor (13) is fixedly connected to the separation cylinder (1), and a transmission device (14) is fixedly connected to the output end of the motor (13).

2. The natural gas pipeline impurity separation device with a self-cleaning filter element according to claim 1, characterized in that: The filter elements (6) are arranged in three groups in a linear fashion in the separation cylinder (1). The filter elements (6) are arranged sequentially in the separation cylinder (1) along the gas flow direction, and there is a gap between two adjacent groups of filter elements (6).

3. A natural gas pipeline impurity separation device with a self-cleaning filter element according to claim 2, characterized in that: The transmission device (14) includes a transmission shaft and a transmission gear. The transmission shaft is rotatably connected to the separator (1). A sealing box (15) is provided on the transmission gear. A scraper (16) is fixedly connected to the transmission shaft. The scraper (16) is located on one side of the filter element (6).

4. A natural gas pipeline impurity separation device with a self-cleaning filter element according to claim 3, characterized in that: The first control valve (4) and the second control valve (11) are solenoid valves.

5. A natural gas pipeline impurity separation device with a self-cleaning filter element according to claim 4, characterized in that: The spiral direction of the spiral guide plate (5) is consistent with the flow direction of natural gas in the separator (1), and the edge of the spiral guide plate (5) is in close contact with the inner wall of the separator (1).

6. A natural gas pipeline impurity separation device with a self-cleaning filter element according to claim 5, characterized in that: The bottom of the impurity collection tank (9) is equipped with a drain valve, which is connected to the inside of the impurity collection tank (9).

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