Pipeable pipe type gas-liquid separator with transition cone and steady flow partition plate

Abstract

The invention provides a cleanable pipe type gas-liquid separator with a transition cone and a steady flow partition plate, the cleanable pipe type gas-liquid separator comprises a main body pipeline inlet section, a central pipe, a main body pipeline outlet section and a sleeve assembly, the sleeve assembly covers the central pipe, the central pipe comprises a slot section, a slot hole is formed in the peripheral wall of the slot section, and the central pipe is communicated with the sleeve assembly through the slot hole; the sleeve assembly comprises a first sleeve section, a transition cone and a second sleeve section, the first sleeve section, the narrow end of the transition cone, the wide end of the transition cone and the second sleeve section are sequentially communicated in the fluid conveying direction, and a first-stage liquid phase outlet is formed in the bottom of the second sleeve section; a flow stabilizing partition plate is fixed between the sleeve assembly and the center pipe and located on the upstream section of the first-stage liquid phase outlet, and a plurality of flow stabilizing holes are formed in the flow stabilizing partition plate. The separator is not provided with a rotation starting element, so that the pipe cleaner is convenient to clean; and high separation efficiency can also be ensured under the working condition of large fluctuation of incoming flow speed.

Description

Technical Field

[0001] The invention relates to the technical field of tubular gas-liquid separation equipment, in particular to a cleanable gas-liquid separator with a transition cone and a flow-stabilizing baffle. Background Art

[0002] When wet natural gas is transported over long distances using pipelines, the accumulation of liquid in the pipe is a key factor restricting the transportation efficiency, transportation distance and flow safety. The accumulation of liquid in the pipe not only increases the pressure loss along the pipeline, but also causes flow safety issues such as hydrate blockage and slug flow in situations such as long-distance gathering and transportation of wet natural gas. When the amount of liquid accumulated in the pipeline is too high, the implementation of pig cleaning operations may even bring great safety hazards to the processing facilities. It is necessary to promptly and proactively separate the gas and liquid and remove the accumulated liquid without affecting the regular cleaning work of long-distance pipelines. Due to the different lengths of gas pipelines, temperature and pressure changes, and terrain conditions, the gas-liquid flow of liquid accumulated in the pipeline often has large gas-liquid ratio fluctuations. The gas-liquid separation equipment that can be cleaned must not only realize online cleaning and internal inspection operations, but also have better adaptability to the fluctuating conditions of the incoming gas and liquid.

[0003] Common undulating pipeline gas-liquid separation is usually based on the principle of cyclone separation. There are often swirling elements inside the pipeline. During the pipeline cleaning operation, the pipe cleaner is blocked by the swirling elements or other separation components and cannot pass through the gas-liquid separator.

[0004] Tubular gas-liquid separators all use swirling elements to enhance the gas-liquid separation effect and improve the adaptability to the fluctuating conditions of the incoming gas-liquid flow, but this also hinders the passage of the pipe cleaner through the gas-liquid separator. In order not to affect the regular implementation of long-distance pipeline cleaning and pipeline inspection operations, some cleanable gas-liquid separators do not have swirling elements on the internal center axis of the main flow pipeline to ensure the smooth passage of the pipe cleaner. Therefore, a reasonable internal structure is crucial to improving the adaptability to the fluctuating conditions of the incoming gas-liquid flow. However, usually, the separation efficiency of this type of cleanable gas-liquid separator is significantly reduced under the working conditions of high liquid content and large gas flow, and the gas-liquid separation effect is poor.

[0005] The applicant has found that the prior art has at least the following technical problems: In summary, in the prior art, the cleanable gas-liquid separator no longer has a swirling element in order not to affect the regular cleaning of long-distance pipelines, pipeline inspection and other operations, but this affects the gas-liquid separation effect, significantly reduces the separation efficiency, and has a poor gas-liquid separation effect. Summary of the invention

[0006] The object of the present invention is to provide a piggable gas-liquid separator with a transition cone and a flow-stabilizing baffle, so as to solve the technical problems of low separation efficiency and poor gas-liquid separation effect of piggable gas-liquid separators without swirl elements in the prior art. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a pipe-cleanable gas-liquid separator with a transition cone and a flow-stabilizing baffle, comprising a main pipeline inlet section, a central pipe, a main pipeline outlet section and a sleeve assembly, wherein:

[0009] The main pipe inlet section, the central pipe, and the main pipe outlet section are sequentially connected along the fluid conveying direction, the sleeve assembly is covered outside the central pipe, the central pipe includes a slit section, and a slit hole is opened on the peripheral wall of the slit section, and the slit hole connects the central pipe with the sleeve assembly;

[0010] The sleeve assembly comprises a first sleeve section, a transition cone and a second sleeve section, wherein the first sleeve section, the narrow end of the transition cone, the wide end of the transition cone and the second sleeve section are sequentially connected along a fluid conveying direction, and a primary liquid phase outlet is provided at the bottom of the second sleeve section;

[0011] A flow stabilizing baffle is fixed between the sleeve assembly and the central tube. The flow stabilizing baffle is located at the upstream section of the primary liquid phase outlet. A plurality of flow stabilizing holes are arranged on the flow stabilizing baffle.

[0012] Preferably, the slit holes are located in the first sleeve section and the transition cone, and the slit holes are arranged at intervals around the central axis of the slit section;

[0013] The number of the slit holes is 8-14.

[0014] Preferably, the inner diameters of the main pipe inlet section, the central pipe, and the main pipe outlet section are equal, and the main pipe inlet section, the central pipe, the main pipe outlet section, and the sleeve assembly are coaxially arranged;

[0015] The diameter of the first sleeve section is smaller than the diameter of the second sleeve section, and both are cylindrical structures.

[0016] Preferably, a transition separation chamber is formed between the transition cone and the central tube, and a diameter of the transition separation chamber gradually increases along a direction from the first sleeve section to the second sleeve section.

[0017] Preferably, the flow stabilizing baffle is a ring-sector structure, the inner ring of the flow stabilizing baffle is fixed to the lower half of the central tube, and the outer ring of the flow stabilizing baffle is fixedly connected to the inner wall of the second sleeve section; the flow stabilizing holes are evenly arranged on the flow stabilizing baffle.

[0018] Preferably, the piggable gas-liquid separator further comprises a horizontal settling pipe, wherein:

[0019] The axial direction of the horizontal settling pipe is parallel to the axial direction of the central pipe, the primary liquid phase outlet is connected to the horizontal settling pipe, and a secondary liquid phase outlet is provided at the bottom of the horizontal settling pipe.

[0020] Preferably, the piggable gas-liquid separator further comprises a secondary gas phase reflux pipe, wherein:

[0021] The horizontal settling pipe is provided with a secondary gas phase outlet, the secondary gas phase reflux pipe is connected to the secondary gas phase outlet, and the gas outlet of the secondary gas phase reflux pipe is connected to the upper part of the second sleeve section, and the gas outlet of the secondary gas phase reflux pipe is located in the upstream section of the flow stabilizing baffle;

[0022] The axial direction of the primary liquid phase outlet is 90° to the axial direction of the horizontal sedimentation tube, and the axial direction of the horizontal sedimentation tube is parallel to the axial direction of the main pipeline inlet section; the axial direction of the secondary liquid phase outlet is 90° to the axial direction of the horizontal sedimentation tube.

[0023] Preferably, the number of the primary liquid phase outlets is more than two, and the primary liquid phase outlets are symmetrically distributed about the central axis of the sleeve assembly. The number of the horizontal sedimentation tubes is arranged in a one-to-one correspondence with the number of the primary liquid phase outlets, and are distributed on opposite sides of the bottom of the sleeve assembly, and each of the horizontal sedimentation tubes is connected to the corresponding secondary gas phase reflux pipe.

[0024] Preferably, the ratio of the length of the slit hole to the overall length of the cleanable gas-liquid separator is 0.6-0.8, and the ratio of the distance from the slit hole to the end face of the main pipe inlet section to the inner diameter of the central pipe is 0.2-0.5.

[0025] Preferably, the ratio of the inner diameter of the first sleeve section to the inner diameter of the main pipe inlet section is 1.5-2.0, the ratio of the length of the first sleeve section to the length of the main pipe inlet section is 0.8-1.2, the ratio of the inner diameter of the second sleeve section to the inner diameter of the main pipe inlet section is 2.0-2.7, the ratio of the length of the second sleeve section to the length of the main pipe inlet section is 1.8-2.5, and the taper of the transition cone ranges from 120° to 150°.

[0026] Compared with the prior art, the piggable gas-liquid separator with a transition cone and a flow-stabilizing baffle provided by the present invention has the following beneficial effects:

[0027] The pipe-cleaning gas-liquid separator with a transition cone and a flow-stabilizing baffle is not provided with a swirling element, and the pipe cleaner can be extended into the inlet section, the central pipe and the outlet section of the main pipeline to clean the pipeline, so the cleaning is convenient; and the gravity sedimentation process is enhanced in stages, and a "transition cone + flow-stabilizing baffle" structure is adopted. The transition cone ensures that the initially separated liquid flow adheres to the wall and flows evenly into the second sleeve section, and the flow-stabilizing baffle further slows down and rectifies the flow to form a stable gravity sedimentation area on the right side of the second sleeve section, thereby improving the overall separation efficiency and stability of the separator, and ensuring the pressure balance inside the separator, and ensuring a high separation efficiency even under conditions where the incoming flow velocity fluctuates greatly; the present invention has the advantages of compact structure, high separation efficiency, strong adaptability to working conditions, and the ability to implement pipe cleaning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure cross-sectional view of the piggable gas-liquid separator with a transition cone and a flow stabilizing baffle of the present invention;

[0030] Figure 2 It is a schematic axial view of the overall structure of a piggable gas-liquid separator with a transition cone and a flow stabilizing baffle according to the present invention;

[0031] Figure 3 It is a schematic axial view of the slit section structure of the piggable gas-liquid separator with a transition cone and a flow-stabilizing baffle of the present invention;

[0032] Figure 4 It is a schematic cross-sectional diagram of a slot section of a piggable gas-liquid separator with a transition cone and a flow-stabilizing baffle according to the present invention;

[0033] Figure 5 A schematic axial view of a flow stabilizing baffle of a piggable gas-liquid separator with a transition cone and a flow stabilizing baffle according to an embodiment of the present invention.

[0034] In the figure, 1, main pipe inlet section; 2, slit section; 21, slit hole; 3, first sleeve section; 4, second sleeve section; 5, primary liquid phase outlet; 6, main pipe outlet section; 7, secondary liquid phase outlet; 8, horizontal settling pipe; 9, center pipe; 10, flow stabilizing baffle; 101, flow stabilizing hole; 11, secondary gas phase outlet; 12, secondary gas phase reflux pipe; 13, transition separation chamber; 14, transition cone. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0037] The embodiment of the present invention provides a cleanable gas-liquid separator with a transition cone and a flow-stabilizing baffle. No swirling element is provided, and the cleaning of the cleaner is convenient. A high separation efficiency can be ensured even under working conditions with large fluctuations in the incoming flow velocity.

[0038] Combine the following Figure 1-Figure 5 The technical solution provided by the present invention is described in more detail.

[0039] See also Figure 1-Figure 5As shown, the present invention provides a cleanable gas-liquid separator with a transition cone and a flow stabilizing baffle, comprising a main pipeline inlet section 1, a central pipe 9, a main pipeline outlet section 6 and a sleeve assembly, wherein: the main pipeline inlet section 1, the central pipe 9, and the main pipeline outlet section 6 are connected in sequence along the fluid conveying direction, the sleeve assembly is covered outside the central pipe 9, the central pipe 9 comprises a slit section 2, a slit hole 21 is opened on the peripheral wall of the slit section 2, and the slit hole 21 connects the central pipe 9 with the inner cavity of the sleeve assembly; the sleeve assembly comprises a first sleeve section 3, a transition cone 14 and a second sleeve section 4, the first sleeve section 3, the narrow end of the transition cone 14, the wide end of the transition cone 14 and the second sleeve section 4 are connected in sequence along the fluid conveying direction, and a primary liquid phase outlet 5 is arranged at the bottom of the second sleeve section 4; a flow stabilizing baffle 10 is fixed between the sleeve assembly and the central pipe 9, the flow stabilizing baffle 10 is located at the upstream section of the primary liquid phase outlet 5, and a plurality of flow stabilizing holes 101 are arranged on the flow stabilizing baffle 10.

[0040] The central pipe 9 has the same diameter as the main pipeline inlet section 1 and the main pipeline outlet section 6. When the pipeline needs to be cleaned, the pig can directly clean through the pipeline.

[0041] The pipe-cleaning gas-liquid separator with a transition cone and a flow-stabilizing baffle is not provided with a rotating element. The pipe cleaner can be extended into the main pipe inlet section 1, the central pipe 9, and the main pipe outlet section 6 to clean the pipe, which is convenient for cleaning. The gravity sedimentation process is enhanced in stages, and a "transition cone 14+flow-stabilizing baffle 10" structure is adopted. The transition cone 14 ensures that the initially separated liquid flow adheres to the wall and flows evenly into the second sleeve section 4. The flow-stabilizing baffle 10 further slows down and rectifies the flow to form a stable gravity sedimentation area on the right side of the second sleeve section 4, thereby improving the overall separation efficiency and stability of the separator, and ensuring the pressure balance inside the separator, and ensuring a high separation efficiency even under conditions where the incoming flow velocity fluctuates greatly. The present invention has the advantages of compact structure, high separation efficiency, strong adaptability to working conditions, and the ability to implement pipe cleaning operations.

[0042] For details, see Figure 1 and Figure 2 As shown, the cleanable gas-liquid separator with a transition cone and a flow-stabilizing baffle has a main structure including a main pipeline inlet section 1, a slit section 2, a first sleeve section 3, a second sleeve section 4, a primary liquid phase outlet 5, a main pipeline outlet section 6, a secondary liquid phase outlet 7, a horizontal settling pipe 8, a central pipe 9, a flow-stabilizing baffle 10, a secondary gas phase outlet 11, a secondary gas phase reflux pipe 12, and a transition separation chamber 13.

[0043] The pipe cleaning gas-liquid separator with transition cone and flow stabilizing baffle has a primary separation unit and a secondary separation unit, wherein the primary separation unit comprises a main pipeline inlet section 1, a slit section 2, a first sleeve section 3, a second sleeve section 4, a primary liquid phase outlet 5, a main pipeline outlet section 6, a central pipe 9, a flow stabilizing baffle 10, and a transition separation chamber 13; a transition cone 14 is used between the first sleeve section 3 and the second sleeve section 4 to transition the separation chamber 13; the main pipeline inlet section 1 is connected to the first sleeve section 3, and the inner diameter of the main pipeline inlet section 1 is less than The inner diameter of the first sleeve section 3, the center tube 9 is coaxially matched with the first sleeve section 3, and the inner diameter of the center tube 9 is consistent with the inner diameter of the main pipeline inlet section 1, so as to ensure the smooth passage of the pig during the pigging operation; a primary liquid phase outlet 5 is installed on the lower wall surface on the right side of the separation chamber of the second sleeve section 4, and the number of the primary liquid phase outlets 5 is 2; the main pipeline outlet section 6 is connected to the right wall surface of the second sleeve section 4 and is coaxially matched, and the inner diameter of the main pipeline outlet section 6 is consistent with the inner diameter of the main pipeline inlet section 1, and the above components form a primary separation unit.

[0044] The secondary separation unit includes a primary liquid phase outlet 5, a main pipeline outlet section 6, a secondary liquid phase outlet 7, a horizontal sedimentation pipe 8, a secondary gas phase outlet 11, and a secondary gas phase reflux pipe 12; the primary liquid phase outlet 5 is connected to the upper wall of the horizontal sedimentation pipe 8, and the axial direction of the pipe section of the primary liquid phase outlet 5 is 90° to the axial direction of the horizontal sedimentation pipe 8, and the axial direction of the horizontal sedimentation pipe 8 is parallel to the axial direction of the main pipeline inlet section 1; the outlet of the secondary gas phase reflux pipe 12 is connected to the upper wall of the horizontal sedimentation pipe 8, and the secondary gas phase reflux pipe 12 is connected to the second sleeve section 4; the axial direction of the secondary liquid phase outlet 7 is 90° to the axial direction of the horizontal sedimentation pipe 8; the secondary liquid phase outlet 7 is located at the bottom of the horizontal sedimentation pipe 8, and the above components form a secondary separation unit.

[0045] The beneficial effects of the present invention are as follows: the pipe cleaning gas-liquid separator with a steady flow transition cone and a porous baffle can strengthen the gravity sedimentation process step by step. The primary separation unit adopts the structure of "transition separation chamber 13 + steady flow baffle 10". The transition separation chamber 13 ensures that the initially separated liquid flow adheres to the wall and flows into the second sleeve section uniformly. The steady flow baffle further decelerates and rectifies to form a stable gravity sedimentation area on the right side of the second sleeve section. The secondary separation unit adopts the structure of "horizontal sedimentation pipe section + gas reflux pipeline". Under the working condition where the incoming liquid velocity fluctuates greatly, the liquid phase that is not separated and discharged in time in the horizontal sedimentation pipe section can flow back to the second sleeve section with the secondary gas phase reflux pipe for re-separation, thereby improving the overall separation efficiency and stability of the separator and ensuring the pressure balance inside the separator. The two separation units cooperate to ensure that the pipe cleaning device passes through the primary separation unit smoothly, and at the same time, a high separation efficiency can be guaranteed under the working condition where the incoming flow velocity fluctuates greatly. The present invention has the advantages of compact structure, high separation efficiency, strong adaptability to working conditions, and the ability to implement pipe cleaning operations.

[0046] The ratio of the inner diameter of the first sleeve section 3 to the inner diameter of the main pipe inlet section 1 is 1.5-2.0, the ratio of the length of the first sleeve section 3 to the length of the main pipe inlet section 1 is 0.8-1.2, the ratio of the inner diameter of the second sleeve section 4 to the inner diameter of the main pipe inlet section 1 is 2.0-2.7, the ratio of the length of the second sleeve section 4 to the length of the main pipe inlet section 1 is 1.8-2.5, the taper of the transition separation chamber refers to the obtuse angle formed by the lower wall of the first sleeve section and the transition cone, and the obtuse angle is 120°-150°, such as Figure 1 shown.

[0047] The ratio of the inner diameter of the horizontal settling pipe 8 to the inner diameter of the main pipeline inlet section 1 is 0.7-0.9, the length of the horizontal settling pipe 8 is equal to the length of the primary separation unit, the ratio of the inner diameter of the secondary gas phase reflux pipe 12 to the inner diameter of the horizontal settling pipe 8 is 0.4-0.6, and the axis of the secondary gas phase reflux pipe 12 is parallel to the axis of the first sleeve section 3. Figure 2 shown.

[0048] The inner diameter of the central pipe 9 is equal to the inner diameter of the main pipeline inlet section 1. The ratio of the designed pig length to the length of the central pipe 9 slit section 2 is 0.6-0.8, and the number is 8-14. The slit sections 2 are distributed along the circumference of the central pipe 9. The central pipe 9 is sealed and connected to the main pipeline inlet section 1 by threads or welding. The ratio of the distance from the slit section 2 to the main pipeline inlet section 1 to the inner diameter of the central pipe 9 is 0.2-0.5. Figure 3 , 4 shown.

[0049] The flow-stabilizing holes 101 on the flow-stabilizing baffle 10 are spaced apart from each other. The cross section of the flow-stabilizing baffle 10 is semicircular, and a plurality of circular holes are opened inside. It is ensured that a certain distance is left between the opening and the top arc of the flow-stabilizing baffle. When installed, the bottom outer diameter matches the inner diameter of the second sleeve section 4, and the top arc matches the outer diameter of the center tube 9. The axis position of the flow-stabilizing baffle 10 is installed at 90° to the axial position of the first sleeve section 3. Figure 5 shown.

[0050] During operation, the gas-liquid mixture enters from the inlet section 1 of the main pipeline, and when it flows through the slit section 2 of the central tube 9, the liquid and part of the gas flow into the first sleeve section 3 under the action of gravity and gas expansion. The transition separation chamber 13 ensures that the initially separated liquid flow adheres to the wall and flows evenly into the second sleeve section 4, and the gas and liquid are decelerated and gravity separated on the left side of the second sleeve section, and then further decelerated and rectified through the flow stabilizing baffle 10, forming a stable gas-liquid gravity sedimentation separation area on the right side of the second sleeve section 4, and the liquid phase containing a small amount of gas phase flows into the horizontal sedimentation pipe 8 through the primary liquid phase outlet 5 at the bottom of the sedimentation area, further decelerated and fully separated by gravity sedimentation, and the liquid phase is discharged through the secondary liquid phase outlet 7 at the bottom, and the secondary gas phase reflux pipe 12 introduces the separated gas phase into the second sleeve section 4, while balancing the internal pressure of the separator. Under the working condition where the incoming liquid velocity fluctuates greatly, untimely discharge of the secondary liquid phase outlet 7 can easily cause liquid phase accumulation. The liquid phase that is not separated and discharged in time can flow back to the separation chamber of the second sleeve section 4 along the secondary gas phase reflux pipe 12 and be separated again, thereby improving the overall separation efficiency and stability of the separator.

[0051] The present invention provides a cleanable gas-liquid separator with a steady-flow transition cone and a porous partition, which has the following characteristics compared with conventional tubular gas-liquid separators:

[0052] (1) Based on the gravity sedimentation separation effect, a "two-separation unit" is used to strengthen the cascade gravity sedimentation effect, and the first separation unit adopts a "transition separation chamber 13 + flow stabilizing baffle 10" structure. The liquid and part of the gas flowing through the slit hole 21 of the slit section 2 flow into the transition separation chamber 13 under the action of gravity and gas expansion. The first sleeve section 3 and the second sleeve section 4 are connected by a transition cone 14 to achieve gas-liquid rectification and gradual deceleration, while preventing the liquid phase from accumulating on the left wall of the second sleeve section 4 due to the vortex effect. After further deceleration and rectification by the flow stabilizing baffle 10, a stable gas-liquid gravity sedimentation separation area is formed on the right side of the second sleeve section 4, which strengthens the gravity sedimentation effect of the first separation unit and improves the adaptability of the cleanable pipeline gas-liquid separator to large-volume and high-liquid conditions.

[0053] (2) A slit section 2 is arranged in the central tube of the transition separation chamber 13 of the primary separation unit. The slit section 2 is only opened at the position of the central tube 9 located in the transition separation chamber 13, so that it can perform preliminary separation of the gas and liquid phases in the transition separation chamber 13 to prevent the liquid phase from flowing back into the mainstream pipeline.

[0054] (3) A secondary gas phase reflux pipe 12 is arranged on the top of the horizontal settling pipe 8 and is connected to the upper part of the second sleeve section 4, which not only ensures the pressure balance inside the separator, but also ensures that under the conditions of gas-liquid fluctuation and segment plug flow, the liquid phase that is not separated and discharged in time in the horizontal settling pipe 8 can flow back to the transition separation chamber 13 along the secondary gas phase reflux pipe and be separated again, thereby improving the overall separation efficiency and stability of the separator.

[0055] This separator is suitable for working conditions with large fluctuations in the incoming liquid. Such conditions will cause gas and liquid to reflux together in the reflux pipe of the secondary separation zone. Therefore, the gas-liquid mixture in the horizontal settling tube 8 refluxes to the separation chamber for further separation.

[0056] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A piggable gas-liquid separator with a transition cone and a flow stabilizing baffle, characterized in that: It includes a main pipe inlet section, a center pipe, a main pipe outlet section and a sleeve assembly, wherein: The main pipe inlet section, the central pipe, and the main pipe outlet section are sequentially connected along the fluid conveying direction, the sleeve assembly is covered outside the central pipe, the central pipe includes a slit section, and a slit hole is opened on the peripheral wall of the slit section, and the slit hole connects the central pipe with the sleeve assembly; The sleeve assembly comprises a first sleeve section, a transition cone and a second sleeve section, wherein the first sleeve section, the narrow end of the transition cone, the wide end of the transition cone and the second sleeve section are sequentially connected along a fluid conveying direction, and a primary liquid phase outlet is provided at the bottom of the second sleeve section; A flow stabilizing baffle is fixed between the sleeve assembly and the central tube. The flow stabilizing baffle is located at the upstream section of the primary liquid phase outlet. A plurality of flow stabilizing holes are arranged on the flow stabilizing baffle.

2. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: The slot holes are located in the first sleeve section and the transition cone, and the slot holes are arranged at intervals around the central axis of the slot section; The number of the slit holes is 8-14.

3. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: The inner diameters of the main pipe inlet section, the central pipe, and the main pipe outlet section are equal, and the main pipe inlet section, the central pipe, the main pipe outlet section, and the sleeve assembly are coaxially arranged; The diameter of the first sleeve section is smaller than the diameter of the second sleeve section, and both are cylindrical structures.

4. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: A transition separation chamber is formed between the transition cone and the central tube, and a diameter of the transition separation chamber gradually increases along a direction from the first sleeve section to the second sleeve section.

5. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: The flow stabilizing baffle is a ring-sector structure, the inner ring of the flow stabilizing baffle is fixed to the lower half of the central tube, and the outer ring of the flow stabilizing baffle is fixedly connected to the inner wall of the second sleeve section; the flow stabilizing holes are evenly arranged on the flow stabilizing baffle.

6. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: The piggable gas-liquid separator further comprises a horizontal settling pipe, wherein: The axial direction of the horizontal settling pipe is parallel to the axial direction of the central pipe, the primary liquid phase outlet is connected to the horizontal settling pipe, and a secondary liquid phase outlet is provided at the bottom of the horizontal settling pipe.

7. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 6, characterized in that: The piggable gas-liquid separator further comprises a secondary gas phase reflux pipe, wherein: The horizontal settling pipe is provided with a secondary gas phase outlet, the secondary gas phase reflux pipe is connected to the secondary gas phase outlet, and the gas outlet of the secondary gas phase reflux pipe is connected to the upper part of the second sleeve section, and the gas outlet of the secondary gas phase reflux pipe is located in the upstream section of the flow stabilizing baffle; The axial direction of the primary liquid phase outlet is 90° to the axial direction of the horizontal sedimentation tube, and the axial direction of the horizontal sedimentation tube is parallel to the axial direction of the main pipeline inlet section; the axial direction of the secondary liquid phase outlet is 90° to the axial direction of the horizontal sedimentation tube.

8. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 7, characterized in that: The number of the primary liquid phase outlets is more than two, and the primary liquid phase outlets are symmetrically distributed about the central axis of the sleeve assembly. The number of the horizontal sedimentation pipes is arranged in a one-to-one correspondence with the number of the primary liquid phase outlets, and are distributed on opposite sides of the bottom of the sleeve assembly, and each of the horizontal sedimentation pipes is connected to the corresponding secondary gas phase reflux pipe.

9. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: The ratio of the length of the slit hole to the overall length of the cleanable gas-liquid separator is 0.6-0.8, and the ratio of the distance from the slit hole to the end face of the inlet section of the main pipeline to the inner diameter of the central tube is 0.2-0.

5.

10. The piggable gas-liquid separator with transition cone and flow stabilizing baffle according to claim 1, characterized in that: The ratio of the inner diameter of the first sleeve section to the inner diameter of the main pipe inlet section is 1.5-2.0, the ratio of the length of the first sleeve section to the length of the main pipe inlet section is 0.8-1.2, the ratio of the inner diameter of the second sleeve section to the inner diameter of the main pipe inlet section is 2.0-2.7, the ratio of the length of the second sleeve section to the length of the main pipe inlet section is 1.8-2.5, and the taper range of the transition cone is 120°-150°.

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