Separating type natural gas low-temperature separator capable of automatically draining water

Abstract

The invention discloses a separation type natural gas low-temperature separator capable of automatically draining water, and relates to the field of natural gas low-temperature separators, the separation type natural gas low-temperature separator comprises a low-temperature separator body and an underneath reserved butt joint part, the underneath reserved butt joint part is mounted at the lower end of the low-temperature separator body, and separated liquid is discharged through the underneath reserved butt joint part. The separation type natural gas low-temperature separator capable of automatically draining water is provided with a self-sealing structure, and along with separation and preparation work of natural gas in the low-temperature separator body, oil-liquid separation substances are separated and stored at the bottom of the low-temperature separator body; when a butt joint reserved floating block in the lower reserved butt joint piece makes contact with water level accumulated buoyancy, the butt joint reserved floating block moves upwards along a vertical guide groove along with the butt joint reserved floating block, so that a first reserved traction rope drives the sealing attaching butt joint piece to form a traction structure to be automatically opened along the inner side of the lower reserved butt joint piece, and therefore accumulated liquid is separated through a self-sealing structure; quantitative discharge treatment is carried out while the requirement for the liquid level in the equipment is met.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas low-temperature separators, in particular to a separation-type natural gas low-temperature separator capable of automatically draining water. Background Art

[0002] As a popular fuel gas raw material, natural gas needs to go through multiple steps in its processing, such as gas-liquid separation of raw materials through low-temperature separators, etc. Its quality determines the overall quality level of natural gas production; Most existing natural gas cryogenic separators perform separation processing work through a separate operation mode; For example, a separation-type natural gas low-temperature separator with publication number CN117965217B specifically relates to natural gas processing equipment technology, including a separation tank, a three-phase separation structure is fixedly connected to the middle of the inner cavity of the separation tank, a cooling structure is provided together with the right part of the outer surface of the separation tank and the inner cavity of the three-phase separation structure, an observation window is provided in the front of the outer surface of the separation tank, an oil drainage structure is provided in the lower part of the inner cavity of the separation tank, and an automatic drainage structure is provided together with the lower end of the oil drainage structure and the bottom wall of the inner cavity of the separation tank. The separation-type natural gas low-temperature separator described above separates condensate oil and water vapor in natural gas through the action of the three-phase separation structure, and the separated natural gas rises and separates small particles of water through the action of the mist-breaking structure and is then sent out through the outlet pipe, and the separated oil-water mixture enters the inner cavity of the separation tank; Another example is a vertical low-temperature separator with publication number CN218951340U, comprising a tank body, the tank body having an inlet, a first outlet and a second outlet; a feed distributor connected to the inlet, a liquid storage cavity formed between the feed distributor and the bottom of the tank body, and the first outlet connected to the liquid storage cavity; a gas-liquid separation device located above the feed distributor, a first cavity formed between the feed distributor and the gas-liquid separation device; and a cyclone device located above the gas-liquid separation device. For example, a natural gas recovery process with publication number CN103146450A can improve the recovery rate of light hydrocarbons and reduce energy consumption. The process includes the following steps: the raw gas is separated and filtered through a separator and a filter in sequence; it enters the compressor for compression, and then air-cooled, and then some water and heavy hydrocarbons are separated through a separator; it is then deeply dehydrated through a dehydration unit until the moisture content is less than 10ppm; it is then filtered, and then pre-cooled to -10°C through a heat exchanger, cooled to -35°C by a refrigerator, and then cooled and separated; the separated mixed hydrocarbons are reheated to room temperature through a heat exchanger and sent to a mixed hydrocarbon storage tank; Although the above-mentioned prior art is processed through separation operation, the existing separation type natural gas low-temperature separator will produce a large amount of separation liquid during operation, which requires the user to manually discharge it regularly. The user cannot accurately know the amount of stored liquid, and thus cannot adaptively drain the water, which has certain usage limitations. Summary of the invention

[0003] The object of the present invention is to provide a separation type natural gas low-temperature separator capable of automatic drainage, so as to solve the problem proposed in the above background technology that a large amount of separation liquid will be generated during the operation, which requires the user to manually discharge it regularly, and the user cannot accurately know the amount of stored liquid and thus cannot adaptively drain the liquid.

[0004] To achieve the above object, the present invention provides the following technical solution: a separation type natural gas low temperature separator capable of automatic drainage, comprising a low temperature separator body and a lower reserved docking piece, wherein the lower end of the low temperature separator body is provided with a lower reserved docking piece, and the separated liquid is discharged through the lower reserved docking piece; A drainage reserved channel is provided at the lower end of the lower reserved docking piece, a vertical guide groove is provided on the inner wall of the lower reserved docking piece, and a docking reserved floating block is nested and installed on the inner side of the vertical guide groove, a first reserved traction rope is docked at the lower end of the docking reserved floating block, and the first reserved traction rope passes through the interior of the lower reserved docking piece, and a self-sealing structure is provided on the inner side of the lower reserved docking piece, and the self-sealing structure is used to separate and store liquids to ensure the internal liquid level requirements of the equipment while performing quantitative discharge processing; An oil-water separation structure is arranged on the inner side of the lower reserved docking piece, and the separated oil bodies are processed in a staggered manner through the oil-water separation structure.

[0005] Furthermore, the self-enclosed structure is provided with a sealing and fitting docking piece, and the sealing and fitting docking piece is nested and docked on the inner side of the lower end of the underlying reserved docking piece, the outer side of the sealing and fitting docking piece is adhesively connected with a docking first airbag, and the docking first airbag is arranged inside the underlying reserved docking piece, and the lower end of the sealing and fitting docking piece is docked with the end of the first reserved traction rope.

[0006] Furthermore, an air supply hose is docked through the outer side of the first airbag, and the air supply hose passes through the inside of the lower reserved docking piece, and the end of the air supply hose is docked with the second airbag; a transverse reserved groove is provided on the inner wall of the lower reserved docking piece, and a second airbag is arranged on the inner side of the transverse reserved groove.

[0007] Furthermore, the reserved docking float contacts the accumulated buoyancy of the water level and moves upward along the vertical guide groove, and the lower end of the reserved docking float cooperates with the first reserved traction rope and the sealing and fitting docking piece to form a traction structure, and the sealing and fitting docking piece is symmetrically distributed about the center point of the lower reserved docking piece.

[0008] Furthermore, during the inward movement of the sealing and fitting docking piece, pressure is simultaneously applied to the first docking airbag in contact, and the first docking airbag supplies air to the interior of the second docking airbag through an air supply hose.

[0009] Furthermore, the oil-water separation structure is provided with a nested guide piece, and the nested guide piece is nested and docked inside the transverse reserved slide groove, and the nested guide piece is docked with the outer side of the second airbag; the inner wall of the lower reserved docking piece is nested with an oil absorption reserved layer, and the positions of the oil absorption reserved layer and the nested guide piece correspond to each other, and the inner wall of the lower reserved docking piece is provided with an oil drainage reserved vertical channel, and the oil drainage reserved vertical channel is connected to the lower end of the oil absorption reserved layer.

[0010] Furthermore, a sealing nested component is nested and installed on the inner side of the oil drainage reserved vertical channel, and a return spring is fixedly connected to the outer side of the sealing nested component, and the return spring is butted against the inner wall of the lower reserved docking component; a second reserved traction rope is butted against the outer side of the sealing nested component, and the second reserved traction rope passes through the inner wall of the lower reserved docking component, and the end of the second reserved traction rope is butted against the outer side of the nested guide component.

[0011] Furthermore, during the expansion of the docking second airbag, the outer nested guide is pushed to be displaced, and the nested guide simultaneously applies pressure to the contacted oil absorption reserved layer, and the oil accumulated in the oil absorption reserved layer is discharged along the oil discharge reserved vertical channel at the lower end.

[0012] Furthermore, during the inward movement of the nested guide member, the sealing nested member at the end is driven by the second reserved traction rope to form a displacement operation, thereby connecting the oil drainage reserved vertical channel in a closed state.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The automatic drainage separation type natural gas low temperature separator is provided with a self-sealing structure. As the natural gas separation and preparation work is carried out inside the low temperature separator body, the bottom thereof will separate and store oil and liquid separations. When the docking reserved floating block inside the lower reserved docking piece contacts the water level accumulation buoyancy, it will move upward along the vertical guide groove, thereby driving the sealing and fitting docking piece through the first reserved traction rope to form a traction structure that automatically opens along the inner side of the lower reserved docking piece, thereby separating and storing liquids through the self-sealing structure, and performing quantitative discharge processing while ensuring the internal liquid level requirements of the equipment, without the need for users to perform manual discharge processing regularly, avoiding the user's inability to accurately know the amount of stored liquid, and realizing adaptive drainage processing; Furthermore, an embedded oil absorption reserved layer with equal angle distribution is arranged on the inner side of the lower reserved docking piece to automatically absorb and collect the oil floating on the liquid surface, and separate the oil and water while discharging the liquid, so as to meet the subsequent recovery requirements of the discharged liquid; Furthermore, an oil-water separation structure is provided, through which the separated oil bodies are processed in an alternating manner, and during the inward movement of the sealing and fitting docking piece, it will simultaneously apply pressure to the contacting docking first airbag, so that the docking first airbag is expanded by supplying air to the inside of the docking second airbag through the air supply hose, and the expanded second airbag pushes the outer nested guide piece to apply pressure to the contacting oil absorption reserved layer, so that the oil accumulated in the oil absorption reserved layer is automatically discharged and collected along the oil discharge reserved vertical channel at the lower end, thereby improving the practicability of the device.

[0014] Furthermore, during the inward movement of the nested guide member, it will drive the displacement of the sealing nested member at the end through the second reserved traction rope, and connect the closed vertical channel for oil drainage, thereby adaptively controlling the opening and closing state of the vertical channel for oil drainage, avoiding the mixing of the required collected liquid into the channel, and improving the utilization efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of a half-cut three-dimensional structure of a bottom-mounted reserved docking piece of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the vertical guide groove of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure; Figure 5 It is a schematic diagram of the three-dimensional structure of the nested guide member of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the oil absorption reserved layer of the present invention; Figure 7It is a schematic diagram of the three-dimensional structure of the sealing and fitting joint of the present invention; Figure 8 A schematic diagram of the three-dimensional structure of the floating block reserved for docking of the present invention; Fig. 9 This is a schematic diagram of the three-dimensional structure of the second airbag docking according to the present invention.

[0016] In the figure: 1. Low-temperature separator body; 2. Lower reserved docking piece; 3. Reserved channel for liquid discharge; 4. Vertical guide groove; 5. Reserved floating block for docking; 6. First reserved traction rope; 7. Sealing and fitting docking piece; 8. Docking first airbag; 9. Air supply hose; 10. Docking second airbag; 11. Horizontal reserved slide groove; 12. Nested guide piece; 13. Reserved layer for oil absorption; 14. Reserved vertical channel for oil discharge; 15. Sealing nested piece; 16. Reset spring; 17. Second reserved traction rope. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1-9 The present invention provides the following technical solutions: a separated natural gas low-temperature separator capable of automatic drainage, comprising a low-temperature separator body 1, a lower reserved docking piece 2, a drainage reserved channel 3, a vertical guide groove 4, a docking reserved floating block 5, a first reserved traction rope 6, a sealing and fitting docking piece 7, a docking first airbag 8, an air supply hose 9, a docking second airbag 10, a transverse reserved chute 11, a nested guide piece 12, an oil absorption reserved layer 13, an oil drainage reserved vertical channel 14, a sealing nested piece 15, a reset spring 16, and a second reserved traction rope 17; A lower reserved docking piece 2 is installed at the lower end of the low-temperature separator body 1, and the separated liquid is discharged through the lower reserved docking piece 2; A drainage reserved channel 3 is provided at the lower end of the lower reserved docking piece 2, a vertical guide groove 4 is provided on the inner wall of the lower reserved docking piece 2, and a docking reserved floating block 5 is nested and installed on the inner side of the vertical guide groove 4, a first reserved traction rope 6 is docked at the lower end of the docking reserved floating block 5, and the first reserved traction rope 6 passes through the interior of the lower reserved docking piece 2, and a self-sealing structure is provided on the inner side of the lower reserved docking piece 2, and the self-sealing structure is used to separate and store the liquid to ensure the internal liquid level requirement of the equipment while performing quantitative discharge processing; The self-enclosed structure is provided with a sealing and fitting docking piece 7, and the sealing and fitting docking piece 7 is nested and docked inside the lower end of the lower reserved docking piece 2, and the outer side of the sealing and fitting docking piece 7 is bonded and connected with a docking first airbag 8, and the docking first airbag 8 is arranged inside the lower reserved docking piece 2, and the lower end of the sealing and fitting docking piece 7 is docked with the end of the first reserved traction rope 6. The outer side of the docking first airbag 8 is penetrated and docked with an air supply hose 9, and the air supply hose 9 is penetrated along the inside of the lower reserved docking piece 2, and the end of the air supply hose 9 is docked with a docking second airbag 10, and during the inward movement of the sealing and fitting docking piece 7, the contacted docking first airbag 8 is simultaneously pressurized, and the docking first airbag 8 supplies air to the inside of the docking second airbag 10 through the air supply hose 9.

[0019] The inner wall of the lower reserved docking piece 2 is provided with a transverse reserved chute 11, and the inner side of the transverse reserved chute 11 is provided with a docking second airbag 10. The docking reserved floating block 5 contacts the water level and accumulates buoyancy and moves upward along the vertical guide groove 4, and the lower end of the docking reserved floating block 5 cooperates with the first reserved traction rope 6 and the sealing and fitting docking piece 7 to form a traction structure, and the sealing and fitting docking piece 7 is symmetrically distributed about the center point of the lower reserved docking piece 2. As the natural gas is separated and prepared inside the low-temperature separator body 1, the bottom thereof will separate and store oil-liquid separations. When the docking reserved floating block 5 inside the lower reserved docking piece 2 contacts the water level accumulation buoyancy, it will move upward along the vertical guide groove 4, thereby driving the sealing and fitting docking piece 7 to form a traction structure through the first reserved traction rope 6 to automatically open along the inner side of the lower reserved docking piece 2, so that the separated and stored liquid is quantitatively discharged through the self-sealing structure while ensuring the internal liquid level requirements of the equipment, without the need for users to manually discharge the liquid regularly, avoiding the user's inability to accurately know the amount of stored liquid, and realizing adaptive drainage treatment; an embedded oil absorption reserved layer 13 with equal angles is provided on the inner side of the lower reserved docking piece 2 to automatically absorb and collect the oil floating on the liquid surface, and separate oil and water while discharging the liquid to meet the subsequent recovery requirements of the discharged liquid.

[0020] Embodiment 2: Based on Embodiment 1, an oil-water separation structure is also disclosed, and its specific structure is as follows: An oil-water separation structure is arranged on the inner side of the lower reserved docking piece 2, and the separated oil bodies are processed in an interlaced manner through the oil-water separation structure.

[0021] The oil-water separation structure is provided with a nested guide member 12, and the nested guide member 12 is nested and docked inside the transverse reserved slide groove 11, and the nested guide member 12 is docked with the outer side of the docking second airbag 10; the inner wall of the lower reserved docking member 2 is nested with an oil absorption reserved layer 13, and the positions of the oil absorption reserved layer 13 and the nested guide member 12 correspond to each other, and the inner wall of the lower reserved docking member 2 is provided with an oil drainage reserved vertical channel 14, and the oil drainage reserved vertical channel 14 is connected to the lower end of the oil absorption reserved layer 13. A sealing nested component 15 is nested and installed on the inner side of the oil drainage reserved vertical channel 14, and a return spring 16 is fixedly connected to the outer side of the sealing nested component 15, and the return spring 16 is butted against the inner wall of the lower reserved docking component 2; a second reserved traction rope 17 is butted against the outer side of the sealing nested component 15, and the second reserved traction rope 17 passes through the inner wall of the lower reserved docking component 2, and the end of the second reserved traction rope 17 is butted against the outer side of the nested guide component 12.

[0022] During the expansion of the second airbag 10, the outer nested guide 12 is pushed to be displaced, and the nested guide 12 simultaneously applies pressure to the contacted oil absorption reserved layer 13, and the oil stored in the oil absorption reserved layer 13 is discharged along the oil drainage reserved vertical channel 14 at the lower end. During the inward movement of the nested guide 12, the sealing nested member 15 at the end is driven to be displaced through the second reserved traction rope 17, so as to connect the closed oil drainage reserved vertical channel 14; during the inward movement of the nested guide 12, it will also drive the sealing nested member 15 at the end to be displaced through the second reserved traction rope 17, so as to connect the closed oil drainage reserved vertical channel 14, so as to adaptively control the opening and closing state of the oil drainage reserved vertical channel 14 to avoid mixing the oil to be collected inside. Liquid, through the oil-water separation structure, the separated oil body is processed alternately and separately, and in the process of the sealed fitting 7 moving inward, it will simultaneously pressurize the contacting docking first airbag 8, so that the docking first airbag 8 is expanded by supplying air to the inside of the docking second airbag 10 through the air supply hose 9, and the expanded docking second airbag 10 pushes the outer nested guide 12 to pressurize the contacting oil absorption reserved layer 13, so that the oil accumulated in the oil absorption reserved layer 13 is automatically discharged and collected along the oil discharge reserved vertical channel 14 at the lower end.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A separation type natural gas low temperature separator capable of automatically draining water, comprising a low temperature separator body (1) and a lower reserved docking piece (2), wherein the lower end of the low temperature separator body (1) is provided with the lower reserved docking piece (2), and the separated liquid is discharged through the lower reserved docking piece (2); Features: The lower end of the lower reserved docking piece (2) is provided with a reserved drainage channel (3), the inner wall of the lower reserved docking piece (2) is provided with a vertical guide groove (4), and a reserved docking float (5) is nested and installed inside the vertical guide groove (4), the lower end of the reserved docking float (5) is docked with a first reserved traction rope (6), and the first reserved traction rope (6) passes through the interior of the lower reserved docking piece (2), and a self-sealing structure is provided inside the lower reserved docking piece (2), and the self-sealing structure is used to separate and store liquid while ensuring the internal liquid level requirement of the equipment and performing quantitative discharge processing; An oil-water separation structure is provided on the inner side of the lower reserved docking piece (2), and the separated oil bodies are processed in a staggered manner through the oil-water separation structure.

2. The automatic drainage separation type natural gas low temperature separator according to claim 1, characterized in that: The self-enclosed structure is provided with a sealing and fitting docking piece (7), and the sealing and fitting docking piece (7) is nested and docked inside the lower end of the lower reserved docking piece (2), the outer side of the sealing and fitting docking piece (7) is adhesively connected with a docking first airbag (8), and the docking first airbag (8) is arranged inside the lower reserved docking piece (2), and the lower end of the sealing and fitting docking piece (7) is docked with the end of the first reserved traction rope (6).

3. The automatic drainage separation type natural gas low temperature separator according to claim 2, characterized in that: An air supply hose (9) is connected to the outer side of the first airbag (8), and the air supply hose (9) passes through the interior of the lower reserved docking piece (2), and the end of the air supply hose (9) is connected to the second airbag (10); The inner wall of the lower reserved docking piece (2) is provided with a transverse reserved sliding groove (11), and the inner side of the transverse reserved sliding groove (11) is provided with a docking second airbag (10).

4. The automatic drainage separation type natural gas low temperature separator according to claim 3, characterized in that: The reserved docking float (5) contacts the water level and accumulates buoyancy to move upward along the vertical guide groove (4), and the lower end of the reserved docking float (5) cooperates with the first reserved traction rope (6) and the sealing and fitting docking piece (7) to form a traction structure, and the sealing and fitting docking piece (7) is symmetrically distributed about the center point of the lower reserved docking piece (2).

5. The automatic drainage separation type natural gas low temperature separator according to claim 4, characterized in that: During the inward movement of the sealing and fitting docking member (7), pressure is simultaneously applied to the first docking airbag (8) in contact therewith, and the first docking airbag (8) supplies air to the interior of the second docking airbag (10) through the air supply hose (9).

6. The automatic drainage separation type natural gas low temperature separator according to claim 3, characterized in that: The oil-water separation structure is provided with a nesting guide member (12), and the nesting guide member (12) is nested and docked inside the transverse reserved slide groove (11), and the nesting guide member (12) and the outer side of the docking second airbag (10) are docked with each other; An oil absorption reserved layer (13) is nested and installed on the inner wall of the lower reserved docking piece (2), and the positions of the oil absorption reserved layer (13) and the nested guide piece (12) correspond to each other. An oil discharge reserved vertical channel (14) is opened on the inner wall of the lower reserved docking piece (2), and the oil discharge reserved vertical channel (14) is connected to the lower end of the oil absorption reserved layer (13).

7. The automatic drainage separation type natural gas low temperature separator according to claim 6, characterized in that: A sealing nesting piece (15) is nested and installed inside the oil discharge reserved vertical channel (14), and a return spring (16) is fixedly connected to the outside of the sealing nesting piece (15), and the return spring (16) is butted against the inner wall of the lower reserved butt joint piece (2); A second reserved traction rope (17) is butt-jointed with the outer side of the sealing nesting piece (15), and the second reserved traction rope (17) passes through the inner wall of the underlying reserved butt-jointing piece (2), and the end of the second reserved traction rope (17) is butt-jointed with the outer side of the nesting guide piece (12).

8. The automatic drainage separation type natural gas low temperature separator according to claim 7, characterized in that: During the expansion of the docking second airbag (10), the outer nested guide member (12) is pushed to be displaced, and the nested guide member (12) simultaneously applies pressure to the oil absorption reserved layer (13) in contact, and the oil stored in the oil absorption reserved layer (13) is discharged along the oil discharge reserved vertical channel (14) at the lower end.

9. The automatic drainage separation type natural gas low temperature separator according to claim 8, characterized in that: During the inward movement of the nested guide member (12), the sealing nested member (15) at the end is driven by the second reserved traction rope (17) to perform displacement work, thereby connecting the oil discharge reserved vertical channel (14) in a closed state.

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