Device and method for removing condensate at low point of fluctuating pipeline
阅读说明:本技术 一种起伏管路低点的凝析液排除装置与方法 (Device and method for removing condensate at low point of fluctuating pipeline ) 是由 王以斌 郭维军 丁梅峰 曾波 于 2019-03-27 设计创作,主要内容包括:本发明公开了一种起伏管路低点的凝析液排除装置与方法。装置设有中心转动件(10)、内筒(11)、外筒(1)以及排气排液筒(12)。中心转动件的两端分别设有支撑轴(2),外筒两端的端板上分别设有入口管(3)和出口管(5)。中心转动件外表面与内筒内表面之间的环形空间内设有直流管(60)、第一旋流管(61)、第二旋流管和第三旋流管(63),三个旋流管内均沿轴向设有螺旋板(7)。在一个旋流管直径的长度上,三个旋流管内螺旋板的圈数各不相同。对于上述的任一个管子,入口管和出口管都可以同时与同一个管子的入口和出口分别相通。本发明公开了采用上述装置排除凝析液的方法。本发明主要用于输送天然气的起伏管路上。(The invention discloses a device and a method for removing condensate at a low point of a fluctuating pipeline. The device is provided with a central rotating piece (10), an inner cylinder (11), an outer cylinder (1) and an exhaust and liquid discharge cylinder (12). Two ends of the central rotating piece are respectively provided with a supporting shaft (2), and end plates at two ends of the outer cylinder are respectively provided with an inlet pipe (3) and an outlet pipe (5). A straight flow pipe (60), a first rotational flow pipe (61), a second rotational flow pipe and a third rotational flow pipe (63) are arranged in an annular space between the outer surface of the central rotating piece and the inner surface of the inner barrel, and spiral plates (7) are axially arranged in the three rotational flow pipes. The number of turns of the spiral plates in the three cyclone tubes is different from the length of the diameter of one cyclone tube. For any of the tubes described above, both the inlet and outlet tubes may be in communication with both the inlet and outlet ports, respectively, of the same tube. The invention discloses a method for removing condensate by adopting the device. The invention is mainly used for the fluctuating pipelines for conveying natural gas.)
1. The utility model provides a condensate removing device of undulant pipeline low point which characterized in that: it is equipped with the central rotating part (10), the inner tube (11) and the outer tube (1) from inside to outside, the two ends of the central rotating part (10) are respectively equipped with the supporting shaft (2), the supporting shaft (2) is supported by the open pores on the end plates at the two ends of the outer tube (1), the end plates at the two ends of the outer tube (1) are respectively equipped with the inlet tube (3) and the outlet tube (5), an annular space is formed between the outer surface of the central rotating part (10) and the inner surface of the inner tube (11), a straight-flow tube (60), a first rotational flow tube (61), a second rotational flow tube (62) and a third rotational flow tube (63) are arranged in the annular space, the three rotational flow tubes are respectively equipped with a spiral plate (7) along the axial direction, the inner side of the spiral plate (7) is connected with the outer surface of the rod piece (8), the outer side is connected with the inner, along the axial of cyclone tube, on the length of a cyclone tube diameter, the number of turns of spiral plate (7) in three cyclone tubes is different, central rotation piece (10), inner tube (11), straight-flow pipe (60) and three cyclone tubes can rotate around the axial lead of central rotation piece (10) and back shaft (2), for any above-mentioned pipe, inlet pipe (3) and outlet pipe (5) all can communicate with each other with the entry and the export of same pipe respectively simultaneously, the condensate discharging device of undulant pipeline low point still is equipped with exhaust drainage tube (12), the inner chamber of exhaust drainage tube (12) communicates with each other with the inner chamber of urceolus (1), be equipped with gas vent (13) and condensate discharge port (14) on exhaust drainage tube (12).
2. The apparatus of claim 1, wherein: and the first cyclone tube (61), the second cyclone tube (62) and the third cyclone tube (63) are provided with a throttle orifice plate (9) near the inlet.
3. The apparatus of claim 1 or 2, wherein: along the axial of whirl pipe, on the length of a whirl pipe diameter, the number of turns of spiral board (7) is 1 ~ 2 circles in first whirl pipe (61), and the number of turns of spiral board (7) is 3 ~ 4 circles in second whirl pipe (62), and the number of turns of spiral board (7) is 5 ~ 6 circles in third whirl pipe (63).
4. The apparatus of claim 3, wherein: the diameter of an orifice on the orifice plate (9) is 1/4-1/3 of the diameter of the cyclone tube.
5. The apparatus of claim 1, wherein: the central rotating member (10) is a cylindrical barrel or cylinder.
6. The apparatus of any one of claims 1 to 5, wherein: the outer cylinder (1) and the exhaust and drainage cylinder (12) partially penetrate through each other to form a through hole (15).
7. A method of removing condensate from the low point of a rough pipe, characterised in that the apparatus of claim 1 is used. The device is installed in the low point department of fluctuation pipeline, the entry of inlet tube 3 is passed through the flange and is linked to each other with the upper reaches fluctuation pipeline, the export of outlet pipe (5) is passed through the flange and is linked to each other with low reaches fluctuation pipeline, when the low point of fluctuation pipeline has the condensate liquid, natural gas and condensate liquid flow through first cyclone tube (61), second cyclone tube (62) or third cyclone tube (63), the gas-liquid flow rate is improved with the mixed degree, the gas-liquid flows out from above-mentioned cyclone tube and gets into low reaches fluctuation pipeline again, strike the condensate liquid of low reaches fluctuation pipeline, carry the low point of leaving fluctuation pipeline after scattering the condensate liquid.
Technical Field
The invention belongs to the technical field of multiphase flow and flow guarantee, and relates to a device and a method for removing condensate at a low point of a fluctuating pipeline.
Background
A pipeline for long-distance natural gas transportation has high points and low points along with the fluctuation of terrain to form a fluctuated pipeline. At the low points of the undulating pipe, the condensate, the main components of which are oil and water, accumulates due to the action of gravity. When a small amount of condensate is collected, the area of the flow cross section of the fluctuation pipeline is reduced, and the flow resistance is increased. The interaction of the water contained in the condensate with the hydrogen sulfide and carbon dioxide in the natural gas can cause strong corrosion to pipelines. When the fluctuation pipeline suddenly appears working conditions such as temperature reduction along the line, the condition that a large amount of condensate is separated out in a short time can occur. At this point, a large amount of condensate can form a bridge and slug flow in the downstream upwelling pipeline under the push of the backward airflow. Due to the high gas flow rates in natural gas pipelines, such slugs can cause strong impact on downstream pipelines and oil and gas processing equipment.
Disclosure of Invention
The invention aims to provide a device and a method for removing condensate at a low point of a fluctuating pipeline, which aim to solve the problems that the condensate in the fluctuating pipeline can reduce the area of a pipeline flow section, increase the flow resistance, cause strong corrosion, slug flow impact and the like.
In order to solve the problems, the invention adopts the technical scheme that: the utility model provides a condensate removing device of undulant pipeline low point which characterized in that: the central rotating part, the inner barrel and the outer barrel are arranged from inside to outside, supporting shafts are respectively arranged at two ends of the central rotating part and are supported by open holes on end plates at two ends of the outer barrel, an inlet pipe and an outlet pipe are respectively arranged on the end plates at two ends of the outer barrel, an annular space is formed between the outer surface of the central rotating part and the inner surface of the inner barrel, a direct current pipe, a first spiral flow pipe, a second spiral flow pipe and a third spiral flow pipe are arranged in the annular space, spiral plates are respectively arranged in the three spiral flow pipes along the axial direction, the inner side edges of the spiral plates are connected with the outer surface of a rod piece, the outer side edges of the spiral plates are connected with the inner surface of the spiral flow pipes, two adjacent circles of spiral plates, a spiral flow channel is formed between the outer surface of the rod piece and the inner surface of the spiral flow pipes, the number of circles of the spiral plates in the, for any one of the pipes, the inlet pipe and the outlet pipe can be simultaneously communicated with the inlet and the outlet of the same pipe respectively, the condensate draining device at the low point of the fluctuation pipeline is also provided with an exhaust draining cylinder, the inner cavity of the exhaust draining cylinder is communicated with the inner cavity of the outer cylinder, and the exhaust draining cylinder is provided with an exhaust port and a condensate draining port.
The utility model provides a method is got rid of to condensate of undulant pipeline low point, its characterized in that adopts foretell device, the low point department at the undulant pipeline is installed to the device, the entry of inlet tube passes through the flange and links to each other with the upper reaches undulant pipeline, the export of outlet tube passes through the flange and links to each other with the low reaches undulant pipeline, when there is condensate at the low point of undulant pipeline, natural gas and condensate flow through first cyclone tube, second cyclone tube or third cyclone tube, the gas-liquid flow rate and mixing degree obtain improving, gas-liquid flows out from above-mentioned cyclone tube and then gets into the low reaches undulant pipeline, strike the condensate of low reaches undulant pipeline, carry the low point that leaves the undulant pipeline behind the condensate washout.
The invention has the following beneficial effects: when condensate is at the low point of the fluctuating pipeline, the natural gas and the condensate flow through the three cyclone tubes, and the condensate is discharged from the low point of the fluctuating pipeline. When the low point of the fluctuation pipeline has no condensate, the fluctuation pipeline at the upstream is communicated with the fluctuation pipeline at the downstream through the straight-flow pipe, and the fluctuation pipeline normally conveys natural gas. The detailed working process is described in the detailed description of the invention. The invention is mainly used for the fluctuating pipeline for conveying natural gas, can eliminate the condition of condensate accumulation at the low point of the fluctuating pipeline, avoids various hazards caused by condensate accumulation and ensures the stable operation of the fluctuating pipeline. The device of the invention is easy to install, simple and convenient to operate, does not need redundant additional maintenance facilities, and does not influence the running of the undulating pipeline during working.
The invention can also be used for solving the problem caused by low-point accumulation of condensate when the fluctuation pipeline for conveying other gases is similar to natural gas.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The drawings and detailed description do not limit the scope of the invention as claimed.
Drawings
FIG. 1 is a schematic diagram of the configuration of the low point condensate removal device of the undulating pipeline of the present invention.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a schematic perspective view of the main part of the condensate removal device at the low point of the undulating pipeline of the present invention.
In fig. 1 to 3, the same reference numerals denote the same technical features.
Detailed Description
Referring to fig. 1, 2 and 3, the condensate removing apparatus of the present invention is provided with a central
The diameters of the
The central rotating
The condensate draining device at the low point of the fluctuation pipeline is also provided with an exhaust draining
The
In a preferred embodiment of the present invention, the
Along the axial of whirl pipe, on the length of a whirl pipe diameter, the number of turns of
Referring to fig. 2, and fig. 1 and 3, the outer cylinder 1 and the exhaust/
When in use, the device is arranged at the low point of the fluctuating pipeline for conveying natural gas. The inlet of the inlet pipe 3 is connected with the upstream fluctuating pipeline through a flange, and the outlet of the outlet pipe 5 is connected with the downstream fluctuating pipeline through a flange. The condensate detector is used for detecting whether condensate exists at the low point of the fluctuating pipeline (the low point of the fluctuating pipeline comprises the device and the upstream and downstream fluctuating pipelines nearby the device). The detection point is typically located in the outlet pipe 5 of the apparatus of the invention and the condensate detector may be, for example, of the ultrasonic type. When there is no condensate, the support shaft 2 is rotated, so that the
When condensate is detected at the low point of the fluctuating pipeline, the supporting shaft 2 is rotated, so that the
When the low point of the fluctuation pipeline is detected to have condensate, the condensate can not be completely removed by using the
When the low point of the surge line is detected as having any condensate, it is indicated that the condensate cannot be completely removed using the
In the working process, in the process of switching the connection and disconnection of the inlet pipe 3 and the outlet pipe 5 with the
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