CN115090040A - Cyclone T-shaped pipe gas-liquid separation device - Google Patents
Cyclone T-shaped pipe gas-liquid separation device Download PDFInfo
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- CN115090040A CN115090040A CN202210846912.5A CN202210846912A CN115090040A CN 115090040 A CN115090040 A CN 115090040A CN 202210846912 A CN202210846912 A CN 202210846912A CN 115090040 A CN115090040 A CN 115090040A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/26—Multiple arrangement thereof for series flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
- B04C2009/002—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with external filters
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Abstract
本发明属于气液分离技术领域，公开了一种旋流T型管气液分离装置，气液混合流体经过旋流分离器初步进行气液旋流分离后，气相依次进入气液分离器、聚结器进一步分离气相中夹带的液滴，而后气相通过紧急切断阀、压力调节阀后外输；液相经过T型管逐步分离液相夹带的气体后外输；其中，气液分离器内部设置机械式结构的液位控制装置，用于稳定出口流量并防止段塞工况液相串入气相出口。本发明在保证天然气气液分离性能，解决段塞问题的同时，可满足在空间狭小的海上平台使用；并且有效控制液位波动并防止因段塞流导致的液相流体串入气相管道；另外还设置多个仪表传感器，可监测设备自动运行状态，配合控制系统实现完全自动化可控运行。
The invention belongs to the technical field of gas-liquid separation, and discloses a gas-liquid separation device for a cyclone T-tube. The junction device further separates the liquid droplets entrained in the gas phase, and then the gas phase is transported out through the emergency shut-off valve and the pressure regulating valve; the liquid phase is gradually separated from the gas entrained in the liquid phase through the T-shaped pipe and then transported out; The liquid level control device with mechanical structure is used to stabilize the outlet flow and prevent the liquid phase from entering the gas phase outlet under slug conditions. The invention can ensure the gas-liquid separation performance of natural gas and solve the problem of slug, and can be used on an offshore platform with a narrow space; and can effectively control the fluctuation of liquid level and prevent the liquid-phase fluid caused by the slug flow from entering the gas-phase pipeline; in addition A number of instrument sensors are also set up to monitor the automatic operation status of the equipment, and cooperate with the control system to achieve fully automatic and controllable operation.
Description
Technical Field
The invention belongs to the technical field of natural gas dehydration, and particularly relates to a gas-liquid separation device with a rotational flow T-shaped pipe.
Background
The production conditions of liquid phase containing gas and gas phase containing liquid exist in the production process of the offshore oil and gas field, and the gas and liquid coexistence condition can influence the normal production of the offshore oil and gas field, such as the measurement precision of a measurement flowmeter; the gas-liquid mixed transportation is easy to form slugs, and the stability and the safety of the downstream production flow are influenced; affecting the pipeline transportation capacity and the processing capacity of the separation equipment; affecting the performance of the gas-using equipment, etc. Therefore, gas-liquid separation is required for the case where the liquid phase contains gas and the gas phase contains liquid.
The conventional gas-liquid separation equipment has certain problems, such as large equipment size and low efficiency of a sedimentation separation device; the cyclone separation device is sensitive to inlet flow fluctuation, the cyclone effect and the outlet index are influenced, the height of the device is generally higher, a buffer space and process safety measures are additionally arranged aiming at the working condition of a gas-liquid slug, and the volume and the cost of the device are increased. Meanwhile, the offshore platform is compact in space, has limitations on load capacity and volume, and cannot be provided with a gas-liquid separation device with low space utilization rate and low efficiency.
Disclosure of Invention
The invention aims at solving the related technical problems of the gas-liquid separation device of the offshore platform, and provides the gas-liquid separation device with the rotational flow T-shaped pipe, which has small size and light weight and can be used on the offshore platform with narrow space while ensuring the gas-liquid separation performance of natural gas and solving the problem of slug; the liquid level control device is arranged, liquid level fluctuation is effectively controlled, liquid phase fluid caused by slug flow is prevented from being connected into a gas phase pipeline in series, a plurality of instrument sensors are additionally arranged, the automatic operation state of the equipment can be monitored, the control over the whole operation state is realized by matching with a control system, the manual operation amount in the operation process is small, and full-automatic controllable operation is realized.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a gas-liquid separation device with a cyclone T-shaped pipe, which comprises a first cyclone separator, a second cyclone separator, a first gas-liquid separator, a second gas-liquid separator, a first T-shaped pipe, a second T-shaped pipe, a third T-shaped pipe, a fourth T-shaped pipe, a liquid level control device, a coalescer, a liquid level transmitter, a gas phase collecting pipeline, a liquid phase collecting pipeline, an emergency cut-off valve, a pressure regulating valve and a pressure transmitter, wherein the first cyclone separator is connected with the first gas-liquid separator;
inlets of the first cyclone separator and the second cyclone separator are connected with an external natural gas pipeline, and a gas phase outlet of the first cyclone separator is respectively connected with an inlet of the first gas-liquid separator and an inlet of the second gas-liquid separator; a gas phase outlet of the second cyclone separator is respectively connected with an inlet of the first gas-liquid separator and an inlet of the second gas-liquid separator;
the gas phase outlets of the first gas-liquid separator and the second gas-liquid separator are both connected with the inlet of the coalescer; the outlet of the coalescer is connected with one end of the gas phase collecting pipeline, and the other end of the gas phase collecting pipeline is used for connecting the external gas phase pipeline;
the liquid level control devices are arranged in the first gas-liquid separator and the second gas-liquid separator and are used for reducing the opening degree of liquid phase outlets of the first gas-liquid separator and the second gas-liquid separator when the liquid level rises and completely closing the liquid phase outlets of the first gas-liquid separator and the second gas-liquid separator when the liquid level reaches a design critical value;
liquid phase outlets of the first cyclone separator, the second cyclone separator, the first gas-liquid separator and the second gas-liquid separator are respectively connected with first interfaces of the first T-shaped pipe, the second T-shaped pipe, the third T-shaped pipe and the fourth T-shaped pipe; the first T-shaped pipe, the second T-shaped pipe, the third T-shaped pipe and the fourth T-shaped pipe are sequentially connected in series through second interfaces and third interfaces thereof, the second interface of the first T-shaped pipe is plugged, the third interface of the fourth T-shaped pipe is connected with an inlet of the liquid phase collecting pipeline, and an outlet of the liquid phase collecting pipeline is used for being connected with an external liquid phase pipeline;
the emergency cut-off valve, the pressure regulating valve and the pressure transmitter are sequentially arranged in the direction from the inlet to the outlet of the gas-phase collecting pipe; the emergency cut-off valve, the pressure regulating valve and the pressure transmitter are all in signal connection with a control system; the control system is used for adjusting the opening of the pressure adjusting valve according to the pressure signal fed back by the pressure transmitter;
the first gas-liquid separator and the second gas-liquid separator are respectively provided with a liquid level transmitter, and the liquid level transmitters are used for monitoring the liquid levels of the first gas-liquid separator and the second gas-liquid separator and are in signal connection with the control system; the control system is used for judging whether the liquid levels of the first gas-liquid separator and the second gas-liquid separator reach a design critical value according to a liquid level height signal fed back by one of the liquid level transmitters, and if the liquid levels reach the design critical value, the control system controls the emergency cutoff valve to be closed.
Furthermore, the inlet joints of the first cyclone separator and the second cyclone separator are tangent to the wall surface of the separation cylinder body, and the inlet joints are arranged along the oblique lower direction.
Furthermore, the included angle between the axis of the inlet joint and the axis of the separation cylinder body is 25-30 degrees.
Furthermore, the inlet joints of the first gas-liquid separator and the second gas-liquid separator are tangent to the wall surface of the separation cylinder body, and the inlet joints are arranged along the horizontal direction.
Further, the first T-shaped pipe, the second T-shaped pipe, the third T-shaped pipe and the fourth T-shaped pipe each include a first joint, a second joint and a third joint, and the first joint, the second joint and the third joint are communicated with each other.
Further, the liquid level control device comprises an upper float and a lower regulating valve, and the float and the regulating valve are rigidly connected through a connecting rod; the floater floats on the liquid level in the first gas-liquid separator and the second gas-liquid separator, and the regulating valve is positioned at the liquid phase outlet of the first gas-liquid separator and the second gas-liquid separator; the floater moves up and down along with the lifting of the liquid level and drives the regulating valve to move up and down, so that the opening and the closing of the liquid phase outlet are regulated.
Further, the gas phase collecting pipeline is provided with a branch, and a safety valve is arranged on the branch.
Further, it is used for gas-liquid ratio less than 1: 1, the control system controls the opening of the pressure regulating valve according to a liquid level height signal fed back by another one of the liquid level transmitters.
The invention has the beneficial effects that:
the gas-liquid separation device of the rotational flow T-shaped pipe enables gas-liquid mixed fluid to be subjected to gas-liquid rotational flow separation primarily through the rotational flow separator, gas phase enters the gas-liquid separator and the coalescer sequentially to further separate liquid drops carried in the gas phase, and then the gas phase is output after passing through the emergency cut-off valve and the pressure regulating valve; the liquid phase is separated from the gas carried by the liquid phase step by step through a T-shaped pipe and then is transported out; the device has light weight and small size while ensuring the gas-liquid separation performance, and can be used on an offshore platform with narrow space; meanwhile, the investment and the operating cost of the device are low, and the engineering construction cost is reduced.
The liquid level control device comprises a floater and an adjusting valve rigidly connected with the floater, wherein the floater drives the adjusting valve to lift along with the fluctuation of the liquid level, so that the adjusting valve adjusts the opening degree of a liquid phase outlet of the gas-liquid separator, and the adjusting valve directly closes the liquid phase outlet when the liquid level reaches a designed critical value, thereby effectively controlling the fluctuation of the liquid level and preventing liquid phase fluid from flowing into a gas phase pipeline due to slug flow.
The T-shaped pipes with the same number as the separators are arranged, so that gas-liquid separation can be realized step by step, the gas-liquid ratio of inlets of each stage is inconsistent with the separation precision, and the single-stage treatment load and difficulty are reduced; the T-shaped pipe is used as a communicating vessel, the pressure liquid level is basically the same, and logic control is not needed to be additionally arranged.
The coalescer arranged in the invention can trap and coalesce the small drops in the natural gas to enable the small drops to grow and coalesce into large drops, thereby separating the large drops from the natural gas and ensuring that the gas phase index meets the requirement.
The invention is provided with a plurality of instrument sensors such as a pressure transmitter, a liquid level transmitter and the like which are all connected with the PLC through communication cables, and a PLC built-in control system can monitor various automatic running states of the equipment; the emergency cut-off valve and the pressure control valve are connected with the PLC through communication cables, and the PLC built-in control system can control the opening and closing of the valves through sensor signals, so that the whole running state of the control device is controlled, the full-automatic running without manual operation is realized, and the manual workload is reduced.
Drawings
FIG. 1 is a process flow diagram of a cyclonic T-tube gas-liquid separation apparatus of the present invention;
FIG. 2 is a schematic structural view of a gas-liquid separation apparatus of a cyclone T-tube of the present invention;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a side view of FIG. 2;
fig. 5 is a top view of fig. 2.
In the above figures: 1-1: first cyclone separator, 1-2: second cyclone separator, 2-1: first gas-liquid separator, 2-2: second gas-liquid separator, 3-1: first T-shaped pipe, 3-2: second T-shaped pipe, 3-3: third T-pipe, 3-4: fourth T-shaped pipe, 4: liquid level control device, 5: coalescer, 6: liquid level transmitter, 7: gas phase collecting line, 8: liquid phase collecting pipeline, 9: quick action emergency valve, 10: pressure regulating valve, 11: pressure transmitter, 12: a safety valve.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1 to 5, the present embodiment provides a cyclone T-shaped pipe gas-liquid separation device, which mainly includes a first cyclone 1-1, a second cyclone 1-2, a first gas-liquid separator 2-1, a second gas-liquid separator 2-2, a first T-shaped pipe 3-1, a second T-shaped pipe 3-2, a third T-shaped pipe 3-3, a fourth T-shaped pipe 3-4, a liquid level control device 4, a coalescer 5, a liquid level transmitter 6, a gas phase collecting pipeline 7, a liquid phase collecting pipeline 8, an emergency cut-off valve 9, a pressure regulating valve 10, and a pressure transmitter 11.
The first cyclone separator 1-1 and the second cyclone separator 1-2 both adopt vertical gas-liquid separation and are used for carrying out primary separation on natural gas and small water drops. Inlets of the first cyclone separator 1-1 and the second cyclone separator 1-2 are connected with an external natural gas pipeline. The gas phase outlet of the first cyclone separator 1-1 is connected with the inlet of the first gas-liquid separator 2-1 and the inlet of the second gas-liquid separator 2-2 respectively. The gas phase outlet of the second cyclone separator 2-1 is respectively connected with the inlet of the first gas-liquid separator 2-1 and the inlet of the second gas-liquid separator 2-2. The liquid phase outlet of the first cyclone separator 1-1 is connected with the first interface of the first T-shaped pipe 3-1, and the liquid phase outlet of the second cyclone separator 2-1 is connected with the first interface of the second T-shaped pipe 3-2.
In a preferred embodiment, the inlet joints of the first cyclone separator 1-1 and the second cyclone separator 1-2 are tangent to the wall surface of the separation cylinder, and the inlet joints are arranged along the oblique lower direction, so that water drops in the natural gas can move downwards in a rotating manner, and the separation of the water drops in the natural gas is accelerated. Preferably, the axis of the inlet fitting is angled at 25-30 ° to the axis of the separation barrel.
The first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 both adopt vertical gas-liquid separation and are used for further separating natural gas from small water drops. The gas phase outlets of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 are both connected with the inlet of the coalescer 5. The liquid phase outlet of the first gas-liquid separator 2-1 is connected with the first interface of the third T-shaped pipe 3-3, and the liquid phase outlet of the second gas-liquid separator 2-2 is connected with the first interface of the fourth T-shaped pipe 3-4.
In a preferred embodiment, the inlet joints of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 are tangent to the wall surface of the separation cylinder body, and the inlet joints are arranged along the horizontal direction, so that inlet natural gas and water drops generate rotational flow, and separation of two substances with different densities is accelerated.
The first T-shaped pipe 3-1, the second T-shaped pipe 3-2, the third T-shaped pipe 3-3 and the fourth T-shaped pipe 3-4 respectively comprise a first interface, a second interface and a third interface, and the first interface, the second interface and the third interface are communicated with each other.
The first connectors of the first T-shaped pipe 3-1, the second T-shaped pipe 3-2, the third T-shaped pipe 3-3 and the fourth T-shaped pipe 3-4 are respectively connected with the liquid phase outlets of the first cyclone separator 1-1, the second cyclone separator 1-2, the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2. The first T-shaped pipe 3-1, the second T-shaped pipe 3-2, the third T-shaped pipe 3-3 and the fourth T-shaped pipe 3-4 are sequentially connected in series through a second interface and a third interface; that is, the second port of the first T-shaped pipe 3-1 is plugged, the third port of the first T-shaped pipe 3-1 is connected with the second port of the second T-shaped pipe 3-2, the third port of the second T-shaped pipe 3-2 is connected with the second port of the third T-shaped pipe 3-3, and the third port of the third T-shaped pipe 3-3 is connected with the second port of the fourth T-shaped pipe 3-4. In this way, the T-shaped pipes arranged in multiple stages can ensure that the gas in the liquid phase is separated step by step.
And a third interface of the fourth T-shaped pipe 3-4 is connected with an inlet of a liquid phase collecting pipeline of the rotational flow T-shaped pipe gas-liquid separation device, and an outlet of the liquid phase collecting pipeline is used for being connected with an external liquid phase pipeline.
Liquid level control devices 4 are arranged in the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2. The liquid level control device 4 comprises an upper float and a lower regulating valve, and the float and the regulating valve are rigidly connected through a connecting rod. The float floats on the liquid level inside the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2, and the regulating valve is positioned at the liquid phase outlet of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2. The floater moves up and down along with the lifting of the liquid level so as to drive the regulating valve to move up and down, and the regulating valve can move up and down to regulate the size of a flow passage of the liquid phase outlet so as to regulate the opening degree of the liquid phase outlet. And when the liquid levels in the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 reach the design critical value, the regulating valve completely closes the liquid phase outlet, thereby effectively controlling the liquid level fluctuation and preventing the liquid phase fluid caused by slug flow from flowing into the gas phase collecting pipeline 7 through the gas phase outlet. Because the liquid level control device 4 is mechanical, simple structure need not to interlock with control system and can automatic operation, avoids signal delay.
The inlet of the coalescer 5 is connected with the gas phase outlets of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2, the outlet of the coalescer 5 is connected with the inlet of a gas phase collecting pipeline 7, and the outlet of the gas phase collecting pipeline 7 is used for being connected with an external gas phase pipeline.
The coalescer 5 is of a high-efficiency baffling structure, and a flow channel is designed by utilizing the gas-liquid density difference, so that small drops in the natural gas can be trapped, coalesced, grown up and condensed into large drops to be separated from the natural gas.
The gas phase collecting pipeline 7 is provided with an emergency cut-off valve 9, a pressure regulating valve 10, a pressure transmitter 11, the emergency cut-off valve 9 and the pressure regulating valve 10, and the pressure transmitter 11 is sequentially arranged along the direction from the inlet to the outlet of the gas phase collecting pipeline 7. The emergency cut-off valve 9, the pressure regulating valve 10 and the pressure transmitter 11 are all in signal connection with the control system.
The first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 are respectively provided with a liquid level transmitter 6, and the two liquid level transmitters 6 are used for monitoring the liquid levels of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 and are in signal connection with a control system. As the inlet of the first gas-liquid separator 2-1 and the inlet of the second gas-liquid separator 2-2 are simultaneously connected with the gas phase outlet of the first gas-liquid separator 2-1/the second gas-liquid separator 2-2, the liquid levels of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 are always the same, and the functions of the two liquid level transmitters 6 can be interchanged.
The control system judges whether the liquid levels of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 reach a design critical value or not according to a liquid level height signal fed back by one of the liquid level transmitters 6, and controls the emergency cut-off valve 9 to be closed if the liquid levels reach the design critical value, so that the liquid is prevented from entering the gas phase collecting pipeline 7 through gas phase outlets of the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2, and downstream equipment is damaged.
When the cyclone T-shaped pipe gas-liquid separation device is used for the gas-liquid ratio more than or equal to 1: 1, the control system controls the opening of the pressure regulating valve 10 according to a natural gas pressure signal in the gas phase collecting pipeline 7 fed back by the pressure transmitter 11, so that the pressure of natural gas in the gas phase collecting pipeline 7 is regulated, and the over-high natural gas flow is avoided.
When the cyclone T-shaped pipe gas-liquid separation device is used for the gas-liquid ratio less than 1: 1, the control system controls the opening of the pressure regulating valve 10 according to a liquid level height signal fed back by another one of the liquid level transmitters 6, so as to regulate the liquid level heights in the first cyclone separator 1-1, the second cyclone separator 1-2, the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2.
The gas phase collecting pipeline 7 is provided with a branch, and a safety valve 12 is arranged on the branch, so that overpressure gas in the gas phase collecting pipeline 7 can be directly discharged to a vent pipeline in case of fire.
The gas-liquid separation treatment method comprises the following steps: after the gas-liquid mixed fluid is subjected to primary gas-liquid cyclone separation through the first cyclone separator 1-1 and the second cyclone separator 1-2, a gas phase enters the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2, a coalescer 5 is used for further separating liquid drops carried in the gas phase, and then the gas phase is output after passing through the emergency cut-off valve 9 and the pressure regulating valve 10; the liquid phase is output after gas carried by the liquid phase is gradually separated by the first T-shaped pipe 3-1, the second T-shaped pipe 3-2, the third T-shaped pipe 3-3 and the fourth T-shaped pipe 3-4. Wherein, the first gas-liquid separator 2-1 and the second gas-liquid separator 2-2 are internally provided with a liquid level control device 4 with a mechanical structure, which can stabilize the outlet flow and prevent the liquid phase of the slug working condition from entering the gas phase outlet. The remote transmission module is arranged in the control system, and the remote transmission module transmits the RS485 communication data to the master control system to adjust the overall running state of the equipment.
Tests prove that compared with a plug flow separator with the same treatment capacity, the volume of the gas-liquid separation device with the cyclone T-shaped pipe is reduced by 55-70%, the overall weight is reduced by 70-80%, and the separation efficiency is high.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.
Claims (8)
1. A gas-liquid separation device with a rotational flow T-shaped pipe is characterized by comprising a first rotational flow separator, a second rotational flow separator, a first gas-liquid separator, a second gas-liquid separator, a first T-shaped pipe, a second T-shaped pipe, a third T-shaped pipe, a fourth T-shaped pipe, a liquid level control device, a coalescer, a liquid level transmitter, a gas phase collecting pipeline, a liquid phase collecting pipeline, an emergency cut-off valve, a pressure regulating valve and a pressure transmitter;
inlets of the first cyclone separator and the second cyclone separator are connected with an external natural gas pipeline, and a gas phase outlet of the first cyclone separator is respectively connected with an inlet of the first gas-liquid separator and an inlet of the second gas-liquid separator; a gas phase outlet of the second cyclone separator is respectively connected with an inlet of the first gas-liquid separator and an inlet of the second gas-liquid separator;
the gas phase outlets of the first gas-liquid separator and the second gas-liquid separator are both connected with the inlet of the coalescer; the outlet of the coalescer is connected with one end of the gas phase collecting pipeline, and the other end of the gas phase collecting pipeline is used for connecting the external gas phase pipeline;
the liquid level control devices are arranged in the first gas-liquid separator and the second gas-liquid separator and are used for reducing the opening degree of liquid phase outlets of the first gas-liquid separator and the second gas-liquid separator when the liquid level rises and completely closing the liquid phase outlets of the first gas-liquid separator and the second gas-liquid separator when the liquid level reaches a design critical value;
liquid phase outlets of the first cyclone separator, the second cyclone separator, the first gas-liquid separator and the second gas-liquid separator are respectively connected with first interfaces of the first T-shaped pipe, the second T-shaped pipe, the third T-shaped pipe and the fourth T-shaped pipe; the first T-shaped pipe, the second T-shaped pipe, the third T-shaped pipe and the fourth T-shaped pipe are sequentially connected in series through a second interface and a third interface of the first T-shaped pipe, the second interface of the first T-shaped pipe is plugged, the third interface of the fourth T-shaped pipe is connected with an inlet of the liquid phase collecting pipeline, and an outlet of the liquid phase collecting pipeline is used for being connected with an external liquid phase pipeline;
the emergency cut-off valve, the pressure regulating valve and the pressure transmitter are sequentially arranged in the direction from the inlet to the outlet of the gas-phase collecting pipe; the emergency cut-off valve, the pressure regulating valve and the pressure transmitter are all in signal connection with a control system; the control system is used for adjusting the opening of the pressure adjusting valve according to the pressure signal fed back by the pressure transmitter;
the first gas-liquid separator and the second gas-liquid separator are respectively provided with a liquid level transmitter, and the liquid level transmitters are used for monitoring the liquid levels of the first gas-liquid separator and the second gas-liquid separator and are in signal connection with the control system; the control system is used for judging whether the liquid levels of the first gas-liquid separator and the second gas-liquid separator reach a design critical value according to a liquid level height signal fed back by one of the liquid level transmitters, and if the liquid levels reach the design critical value, the control system controls the emergency cutoff valve to be closed.
2. The gas-liquid separation apparatus of a cyclone T-type pipe according to claim 1, wherein the inlet joints of the first cyclone and the second cyclone are tangent to the wall surface of the separation cylinder, and the inlet joints are arranged along an obliquely lower direction.
3. The cyclone T-tube gas-liquid separation device of claim 2, wherein the axis of the inlet joint and the axis of the separation cylinder form an angle of 25-30 °.
4. The gas-liquid separation device of a swirl T-tube of claim 1, wherein the inlet joints of the first gas-liquid separator and the second gas-liquid separator are tangent to the wall surface of the separation cylinder, and the inlet joints are arranged in the horizontal direction.
5. The gas-liquid separation device with cyclone tee of claim 1, wherein the first tee, the second tee, the third tee and the fourth tee each comprise a first port, a second port and a third port, and the first port, the second port and the third port are communicated with each other.
6. The cyclonic T-tube gas-liquid separation device of claim 1, wherein the liquid level control means comprises an upper float and a lower damper, the float and the damper being rigidly connected by a linkage; the floater floats on the liquid level in the first gas-liquid separator and the second gas-liquid separator, and the regulating valve is positioned at the liquid phase outlet of the first gas-liquid separator and the second gas-liquid separator; the floater moves up and down along with the lifting of the liquid level and drives the regulating valve to move up and down, so that the opening and the closing of the liquid phase outlet are regulated.
7. The gas-liquid separator of cyclone T-tube as set forth in claim 1, wherein said gas phase collecting line is provided with a branch and a safety valve is provided on the branch.
8. A gas-liquid separating apparatus of the type of cyclone T-pipe as set forth in claim 1, characterized in that it is used for a gas-liquid ratio of less than 1: 1, the control system controls the opening of the pressure regulating valve according to a liquid level height signal fed back by the other one of the liquid level transmitters.
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| CN202210846912.5A CN115090040A (en) | 2022-07-19 | 2022-07-19 | Cyclone T-shaped pipe gas-liquid separation device |
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| CN202210846912.5A CN115090040A (en) | 2022-07-19 | 2022-07-19 | Cyclone T-shaped pipe gas-liquid separation device |
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