CN116379346B - Natural gas pressurizing, conveying and deoiling system - Google Patents
Natural gas pressurizing, conveying and deoiling system Download PDFInfo
- Publication number
- CN116379346B CN116379346B CN202310660892.7A CN202310660892A CN116379346B CN 116379346 B CN116379346 B CN 116379346B CN 202310660892 A CN202310660892 A CN 202310660892A CN 116379346 B CN116379346 B CN 116379346B
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- filter element
- piston
- oil
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000003345 natural gas Substances 0.000 title claims abstract description 52
- 239000007789 gas Substances 0.000 claims abstract description 72
- 238000005238 degreasing Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 79
- 239000010687 lubricating oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 239000013527 degreasing agent Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention provides a natural gas pressurizing, conveying and deoiling system, which belongs to the technical field of natural gas exploitation of oil and gas fields, and is used for carrying out preliminary treatment on exploited oil and gas so as to facilitate the follow-up natural gas gathering and conveying; the double valve is arranged between the separator and the supercharging equipment, so that the natural gas can be automatically closed when the natural gas flow exceeds a preset value, the natural gas can stably enter the oil remover, and adverse effects of unstable factors of oil gas well production on the oil remover are eliminated; the special oil remover setting mode is utilized, so that the oil removing efficiency is improved, the times of replacing the filter element of the oil remover are reduced, and the oil remover has good popularization value.
Description
Technical Field
The invention belongs to the technical field of natural gas exploitation in oil fields, and particularly relates to a natural gas pressurizing, conveying and deoiling system.
Background
In the production of oil and gas wells, the produced natural gas is typically subjected to a preliminary separation treatment near the wellhead, and then is integrated into the network through pipelines, and finally transported to a gas gathering station. Because of the long distance of the gas gathering stations and the loss of resistance along the way during transportation, natural gas transported outwards from the well site is usually required to have a certain pressure. However, as the development of the oil and gas field enters the later stage, the bottom hole pressure gradually decreases, the pressure of the produced natural gas is very low, and even the natural gas is difficult to enter a pipe network, and at this time, the natural gas is often subjected to pressurization treatment by means of a pressurization device such as a compressor and the like; underground natural gas reservoirs are one way of natural gas storage in the world today, and natural gas is generally pumped according to geological structures and then injected into stratum for storage or peak shaving for gas production.
At present, the adopted supercharging equipment is generally a reciprocating compressor, the lubricating oil consumption is about tens of liters every day, according to the working principle of the compressor and the lubricating oil data of the compressors at home and abroad, the injected lubricating oil is generally consumed by a filler, a tail rod and a cylinder, the oil consumption of the cylinder is in contact with medium gas (except the oil-free lubricating compressor), so that natural gas is polluted by the lubricating oil, the pollution of a post process is caused, the polluted natural gas is easy to separate out the lubricating oil in the conveying process, a pipe network is blocked, and the conveying resistance is greatly increased. In order to solve the problems, a post-cooling process of a supercharger is generally adopted and an oil remover is additionally arranged at present to solve part of the problems, and a coalescing filter element, a silk screen foam remover or a vane separator principle is generally adopted to remove oil. However, the current oil removal device generally has the problem of low oil removal efficiency, and one of the reasons for the problem is that as oil removal is carried out, part of lubricating oil is coalesced in a filter element or other structure and cannot be removed in time, so that the oil removal efficiency is gradually reduced. In addition, because the natural gas at the bottom of the well is unstable, pressure fluctuation often occurs during production, and the pressure fluctuation at the well head can be transmitted to a subsequent flow, and sometimes the oil removing effect of the oil remover can be affected, for example, the oil is easily led to permeate the filter element and enter a subsequent pipe network due to the pressure surge.
In view of this, the prior art needs to be further improved, and therefore, the present invention has been made.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a natural gas pressurizing, conveying and deoiling system, which aims to stably deoil and improve deoiling effect while improving deoiling efficiency.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a natural gas pressurization carries deoiling system, it includes the separator, the duplex valve, supercharging equipment, the pneumatic control pipeline, deoiler and pneumatic circuit pipeline, wherein, the oil gas of well head is received to the separator, the gas outlet of separator is connected with supercharging equipment through pneumatic circuit pipeline, supercharging equipment's export links to each other with the deoiler, and wherein, be provided with the duplex valve on pneumatic circuit pipeline, the duplex valve can allow the natural gas of predetermined flow to pass through and automatic closure when the flow exceeds the predetermined value, the duplex valve still is connected to the deoiler through pneumatic control pipeline, the duplex valve includes two flow control valves that concatenate each other, pneumatic control pipeline can introduce the natural gas in the deoiler between two flow control valves in order to realize the control closure of duplex valve.
Preferably, the gas circuit pipeline at least comprises a first pipeline, a second pipeline and a third pipeline which are connected in sequence, one of the two flow control valves is connected between the first pipeline and the second pipeline, the other of the two flow control valves is connected between the second pipeline and the third pipeline, the two flow control valves are identical in structure and comprise valve casings, a first magnetic valve plate and a second magnetic valve plate which are arranged in the valve casings, the first magnetic valve plate and the second magnetic valve plate are arranged in the valve casings in a sliding mode, the first magnetic valve plate and the second magnetic valve plate repel each other and are far away from each other in the initial state, through holes which are communicated with the internal channels of the gas circuit pipeline are formed in the first magnetic valve plate and the second magnetic valve plate, the through holes in the first magnetic valve plate and the second magnetic valve plate are staggered with each other, and when the first magnetic valve plate and the second magnetic valve plate are close due to repulsive force which overcomes each other, closing of the flow control valves can be realized.
Preferably, the oil remover that adopts includes base, jar body, top cap structure and installs the motor on top cap structure, and jar body installs on the base, the top seal of jar body is fixed to be set up top cap structure is provided with rotatable filter core structure in the jar body, and filter core structure passes through the motor and drives in order to realize rotating.
Preferably, the top cover structure is in an I shape as a whole, the bottom is a flange plate and is used for being connected with the top end of the tank body, the top of the top cover structure is provided with a mounting disc and is used for fixedly mounting the motor, a stand column is arranged between the mounting disc at the top and the flange plate at the bottom, and an output shaft of the motor, namely a rotating shaft, sequentially penetrates through the mounting disc, the stand column and the flange plate at the bottom from top to bottom and extends into the tank body; the outside of the tank body is provided with a fixed seat, a stay bar is rotationally arranged on the fixed seat, one end of the stay bar is rotationally arranged on the fixed seat, and one end of the stay bar, which is far away from the fixed seat, is rotationally sleeved on the upright post.
Preferably, the tank body is internally and sequentially fixedly provided with an oil collecting cover, a filter element seat and a filter element cover plate from bottom to top, the oil collecting cover, the filter element seat and the filter element cover plate sequentially divide the tank body into a separation cavity, a buffer cavity, a filter cavity and a gas cavity from bottom to top, wherein the filter element structure is rotationally arranged in the filter cavity, and the top of the gas cavity is sealed by a top cover structure.
Compared with the prior art, the invention has at least the following beneficial effects:
1. the double valve is arranged between the separator and the supercharging equipment, so that the natural gas can be automatically closed when the natural gas flow exceeds a preset value, the natural gas can stably enter the oil remover, and adverse effects of unstable factors of oil gas well production on the oil remover are eliminated;
2. the special oil remover setting mode is utilized, so that the oil removing efficiency is improved, the times of replacing the filter element of the oil remover are reduced, and the oil removing effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic flow diagram of an oil removal system of the present invention;
FIG. 2 is a schematic illustration of a double valve used in the present invention;
FIG. 3 is a schematic cross-sectional view of a main body of a degreaser used in the present invention;
FIG. 4 is an enlarged partial schematic view of the cartridge structure of FIG. 3;
FIG. 5 is a schematic view of the main body of the cartridge holder of FIG. 4;
FIG. 6 is an enlarged partial schematic view of area A of FIG. 5;
the device comprises a 1-separator, a 2-duplex valve, a 3-supercharging device, a 4-pneumatic control pipeline, a 5-deoiler, a 6-gas pipeline, a 7-first oil storage container, a 8-second oil storage container, a 9-base, a 10-tank body, a 11-gas inlet, a 12-oil discharge port, a 13-liquid level meter window, a 14-oil collecting cover, a 15-buffer cavity, a 16-filter core structure, a 17-fixing seat, a 18-stay rod, a 19-top cover structure, a 20-motor, a 21-filter core seat, a 22-oil collecting cavity, a 23-filter core support, a 24-filter layer, a 25-sleeve, a 26-filter core cover plate, a 27-gas cavity, a 28-piston structure, a 29-gas outlet, a 30-rotating shaft, a 31-tray, a 61-first pipeline, a 62-second pipeline, a 63-third pipeline, a 64-vent hole, a 65-flow control valve, 651-valve plate, 652-first magnetic valve plate, 653-second magnetic valve plate, 231-first disc, 232-second disc, 233-guide valve plate, 234-vertical gas flow channel, 281-piston valve plate, first elastic member 282-284, and 284-elastic member.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the present invention provides a natural gas pressurizing and conveying degreasing system, which comprises a separator 1, a double valve 2, a pressurizing device 3, a pneumatic control pipeline 4, a degreasing device 5 and a pneumatic pipeline 6, wherein the separator 1 receives oil gas from a wellhead, an air outlet of the separator 1 is connected with the pressurizing device 3 through the pneumatic pipeline 6, an outlet of the pressurizing device 3 is connected with the degreasing device 5, and a double valve 2 is arranged on the pneumatic pipeline 6, the double valve 2 can allow natural gas with a preset flow to pass through and automatically close when the flow exceeds a preset value, the double valve 2 is also connected with the degreasing device 5 through the pneumatic control pipeline 4, the double valve 2 comprises two flow control valves 65 connected in series, and the pneumatic control pipeline 4 can introduce natural gas in the degreasing device 5 between the two flow control valves 65 so as to realize control closing of the double valve 2.
It should be noted that, for oil and gas wells, oil and gas production is very unstable, sometimes the oil yield is more and the gas yield is less, sometimes the opposite is true, and the unstable production easily leads to unstable pressure of wellhead flow and affects subsequent flow; according to the invention, through the arrangement of the double valve 2, the natural gas can be automatically closed when the flow exceeds the preset value, so that the natural gas can stably enter the oil remover 5, and the influence of unstable factors in oil and gas well production on the oil remover is eliminated.
Specifically, the air circuit pipeline 6 of the present invention at least includes a first pipeline 61, a second pipeline 62 and a third pipeline 63 which are sequentially connected, one of the two flow control valves 65 is connected between the first pipeline 61 and the second pipeline 62, the other of the two flow control valves 65 is connected between the second pipeline 62 and the third pipeline 63, the two flow control valves 65 have the same structure, each of which includes a valve casing 651, and a first magnetic valve plate 652 and a second magnetic valve plate 653 which are disposed in the valve casing 651, the first magnetic valve plate 652 and the second magnetic valve plate 653 are slidably disposed in the valve casing 651, and the first magnetic valve plate 652 and the second magnetic valve plate 653 repel each other to be away from each other in the initial stage, and through holes communicating the internal channels of the air circuit pipeline 6 are disposed in the first magnetic valve plate 652 and the second magnetic valve plate 653, and the through holes in the first magnetic valve plate 652 and the second magnetic valve plate 653 are staggered each other, when the first magnetic valve plate 652 and the second magnetic valve plate 653 are close against each other due to repulsive force, closing of the flow control valves 65 can be realized. As shown in fig. 2, when a large amount of gas is introduced into the first pipeline 61 due to the increase of pressure, the adjacent first magnetic valve plates 652 move from left to right, so that repulsive force between the first magnetic valve plates 652 and the second magnetic valve plates 653 is overcome, and when the first magnetic valve plates 652 and the second magnetic valve plates 653 are close, the through holes on the first magnetic valve plates 652 and the second magnetic valve plates 653 are staggered, so that the corresponding flow control valves 65 are closed, and the gas pipeline 6 is closed.
Further, the second pipeline 62 is provided with a vent 64, one end of the vent 64 is communicated with the inside of the second pipeline 62, and the other end of the vent 64 is connected to the oil remover 5 through the pneumatic pipeline 4. Since the natural gas in the degreaser 5 is the gas pressurized by the pressurizing device 3, when the natural gas in the degreaser 5 is introduced between the two flow control valves 65 through the pneumatic control pipeline 4, a large amount of high-pressure gas is flushed into the second pipeline 62 from the degreaser 5, so that both flow control valves 65 are closed. The term "large amount of high-pressure gas" is used relatively to describe the closing action of the flow control valve 65 for the purpose of highlighting the gas, and in practical arrangement, the second pipeline 62 may be set to be short as long as there is no mutual influence between the two flow control valves 65, and at this time, the introduced high-pressure gas only needs to fill the second pipeline 62 and have a certain amount of gas to support the repulsive force against the respective magnetic valve plates of the two flow control valves 65.
In addition, as shown in fig. 1, either the wellhead gas, the natural gas separated by the separator 1, or the natural gas deoiled by the deoiler 5 can be connected to a blowout prevention tank for combustion treatment. Preferably, the oil separated by the separator 1 is stored and transported by a first oil storage container 7, and the oil separated by the oil remover 5 is stored and transported by a second oil storage container 8.
It should be noted that, the flow control valve 65 of the present invention adopts a magnetic valve plate, which can perform a better anti-corrosion function, and in the production process of oil and gas wells, some wells can produce corrosive gases such as hydrogen sulfide, and the use of the magnetic valve plate can avoid such corrosion.
In order to better achieve the purpose of the invention, there is also provided a preferred oil remover structure, wherein the oil remover 5 comprises a base 9, a tank body 10, a top cover structure 19 and a motor 20 arranged on the top cover structure 19, the tank body 10 is arranged on the base 9, the top cover structure 19 is fixedly arranged on the top of the tank body 10 in a sealing way, a rotatable filter element structure 16 is arranged in the tank body 10, and the filter element structure 16 is driven by the motor 20 to realize rotation. It should be noted that, in most of the existing oil removers, oil removal and separation are achieved through a fixed filter element, a metal wire mesh or a blade, and after a period of use, the above-mentioned fixed filter element and the like can adhere to separated oil stains such as lubricating oil, etc., so that separation efficiency gradually decreases. The filter element structure of the invention can be driven by a motor to rotate, and can rotate at high speed according to the need after running for a period of time, and lubricating oil and the like in the filter element are thrown out by the rotating centrifugal force, so that the subsequent separation efficiency is improved.
Specifically, the top cover structure 19 of the invention is in an I shape as a whole, the bottom is a flange plate and is used for being connected with the top end of the tank body 10, the top of the top cover structure 19 is a mounting disc and is used for fixedly mounting the motor 20, a stand column is arranged between the mounting disc at the top and the flange plate at the bottom, and an output shaft of the motor 20, namely a rotating shaft 30, sequentially passes through the mounting disc, the stand column and the flange plate at the bottom from top to bottom and extends into the tank body 10; further, a fixing seat 17 is provided on the outer side of the tank body 10, a stay bar 18 is rotatably provided on the fixing seat 17, as shown in fig. 3, the stay bar 18 is preferably an L-shaped bent bar, one end of the stay bar 18 is rotatably provided on the fixing seat 17, and one end of the stay bar 18 far away from the fixing seat 17 is rotatably sleeved on the upright post. Through such setting, can conveniently be to the installation of top cap structure 19, on the one hand, vaulting pole 18 is rotatable for fixing base 17, like this, can be in jar body 10 outside with the top cap structure 19 hoist and mount the back again and get into the installation station at jar body 10 top, on the other hand, cup joint for rotating between vaulting pole 18 and the stand, when flange installation again like this, can finely tune rotatory, make things convenient for the location of bolt and bolt hole. Preferably, the top of the stay bar 18 is also provided with a tray 31, and the tray 31 is sleeved outside the upright post and is positioned below the mounting disc; the purpose of this is primarily to reduce the interaction between the mounting disc and the stay 18.
Further, the tank body 10 is internally and sequentially fixedly provided with the oil collecting cover 14, the filter core seat 21 and the filter core cover plate 26 from bottom to top, the oil collecting cover 14, the filter core seat 21 and the filter core cover plate 26 sequentially divide the tank body 10 into a separation cavity, a buffer cavity 15, a filter cavity and a gas cavity 27 from bottom to top, wherein the filter core structure 16 is rotatably arranged in the filter cavity, and the top of the gas cavity 27 is sealed by the top cover structure 19.
Further, the filter core structure 16 comprises a filter core support 23 and a filter layer 24, wherein the filter layer 24 is sleeved on the outer side of the filter core support 23, and the top of the filter core support 23 is fixedly connected with an output shaft of the motor 20. Thus, the motor 20, when operated, is capable of rotating the cartridge structure 16. More specifically, the filter element support 23 includes a first disc 231, a second disc 232 and an air guide tube 233, the first disc 231 is rotatably disposed on the upper surface of the filter element seat 21, the second disc 232 is rotatably disposed on the lower surface of the filter element cover 26, the top of the second disc 232 is fixedly connected with the output shaft of the motor 20 (the output shaft of the motor 20 passes through the middle part of the filter element cover 26), the first disc 231 is connected with the second disc 232 through the vertically disposed air guide tube 233 (fixedly connected), the top of the air guide tube 233 is connected to the lower surface of the second disc 232, the bottom of the air guide tube 233 is fixedly inserted into the middle part of the first disc 231, and the bottom end of the air guide tube 233 extends to be located under the bottom surface of the first disc 231 by a certain distance, the filter element support 23 is rotatably disposed in the middle groove of the filter element seat 21 through the extending part of the air guide tube 233 located under the bottom surface of the first disc 231 (as shown in fig. 5, the first disc 231 is fixedly sleeved on the outer side of the air guide cylinder 233, a certain air guide cylinder 233 bulge is formed below the first disc 231 by the air guide cylinder 233, the bulge is rotatably arranged in a groove in the middle of the filter core seat 21, a vertical air flow channel 234 (as shown in fig. 5 and is arranged in a downward through way) is arranged in the middle of the air guide cylinder 233, a through hole communicated with the buffer cavity 15 is arranged in the middle of the filter core seat 21, the vertical air flow channel 234 is communicated with the through hole, an air flow through hole in the radial direction is arranged on a cylinder of the air guide cylinder 233 between the first disc 231 and the second disc 232, the filter layer 24 is sleeved on the outer side of the cylinder of the air guide cylinder between the first disc 231 and the second disc 232, the diameters of the first disc 231 and the second disc 232 are the same, the diameter (outer diameter) of the filter layer 24 is smaller than that of the first disc 231 and the second disc 232, the second disc 232 and the filter element cover plate 26 are provided with flow guide channels corresponding to each other in the vertical direction, and initially, the flow guide channels of the second disc 232 and the filter element cover plate 26 are communicated (by arranging a limiting structure on a rotating shaft of the motor 20, when the motor 20 stops rotating, that is, when the motor 20 stops rotating, the rotating shaft 30 stops according to a designated direction, and a specific limiting structure mode is not the prior art, and is not repeated here), so that natural gas filtered by the filter layer 24 can flow through the flow guide channels on the second disc 232 and the filter element cover plate 26 into a gas cavity 27 above the filter element cover plate 26, and preferably, the flow guide channels are arranged on the second disc 232 and the filter element cover plate 26 corresponding to a region between the radial outer side of the filter layer 24 and the inner wall of the tank body 10; further, a closed oil collecting cavity 22 is formed outside the through hole in the middle of the filter core seat 21, an oil collecting hole is formed in the top of the oil collecting cavity 22, an oil guiding hole matched with the oil collecting hole is formed in the first disc 231, and initially, the oil collecting hole in the top of the oil collecting cavity 22 is not communicated with the oil guiding hole in the first disc 231, and when the rotating shaft of the motor 20 rotates, the oil collecting hole can be communicated. Through the arrangement, when normal oil removal and filtration are carried out, natural gas in the buffer cavity 15 flows into the vertical airflow channel 234 through the through hole in the middle of the filter element seat 21, then flows to the filter layer 24 through the airflow through hole in the radial direction of the air guide cylinder 233, the filtered natural gas enters the area between the outer side of the filter layer 24 and the inner wall of the tank body 10, because the flow guide channels of the second disc 232 and the filter element cover plate 26 are communicated at this time, the filtered natural gas can flow through the flow guide channels on the second disc 232 and the filter element cover plate 26 to enter the gas cavity 27 above the filter element cover plate 26, when the oil removal efficiency is reduced, the motor 20 works to drive the filter element structure 16 to rotate, oil dirt in the filter layer 24 can be thrown out under high-speed rotation, and because the filter element seat 21 and the filter element cover plate 26 are fixed in the tank body 10, when the filter element structure 16 rotates, the oil collecting holes are in intermittent communication with the oil guide holes, so that the thrown out oil dirt can be collected to the oil collecting cavity 22, and when the filter element cover plate 26 rotates, the flow guide channels of the second disc 232 and the filter element cover plate 26 are also in intermittent communication, when the natural gas can flow to the gas cavity 27, when the oil dirt can flow into the gas cavity, the filter element structure 24 is stopped, and the filter element structure is kept in the filter layer, and the filter layer 20 is kept in a preset state, and the normal state after the oil removal operation is reached.
In order to better achieve the purpose of the invention, a sleeve 25 is also arranged on the outer side of the filter element structure 16, the sleeve 25 is rotatably sleeved in the tank body 10 and rotatably sleeved outside the filter element bracket 23 of the filter element structure 16, and a gap for natural gas to pass through is reserved between the sleeve 25 and the filter layer 24. The sleeve 25 has the function of stabilizing the filter element structure 16, and can reduce the influence of the filter element structure 16 on the tank body 10 in the process of rotating the filter element structure 16 at a high speed.
Further, as shown in fig. 4 to 6, a piston cavity is disposed in the rotating shaft 30, the piston cavity is disposed adjacent to a connection position of the rotating shaft 30 and the second disc 232, a piston 281 is disposed in the piston cavity, the piston 281 is in an inverted T-shaped structure, the piston comprises a piston disc disposed at the bottom and a piston rod connected to the top of the piston disc, the diameter of the piston disc is larger than that of the piston rod, the piston cavity comprises a first piston cavity and a second piston cavity which are mutually communicated from bottom to top, the piston disc is slidably disposed in the first piston cavity, the piston rod is slidably disposed in the second piston cavity, a first elastic member 282 which is slidably disposed along the first piston cavity is disposed at the bottom of the piston disc in the first piston cavity, a second elastic member 283 is disposed at the top of the piston rod in the second piston cavity, a vertical communication hole 284 is disposed at the bottom of the first piston cavity, a radial channel 285 which is communicated to the gas cavity 27 is disposed at the top, the first piston cavity is communicated to the gas cavity 27 through the bottom communication hole 284, the first piston cavity is communicated to the gas cavity 27 through the radial channel at the top, the second elastic member 283 is disposed at the bottom and a second elastic member is disposed at the bottom of the piston cavity, a controller is disposed at the position of the piston cavity is disposed at the bottom of the piston cavity and is connected to the controller and is configured to be used to be turned on and to be turned off according to a stress sensor. With such an arrangement, when oil stains such as lubricating oil and the like are coalesced at the filter layer 24 to cause gradual reduction of oil removal efficiency, the pressure difference between the vertical airflow channel 234 and the air chamber 27 is increased, the first elastic member 282 and the piston 281 are moved upwards by the increase of the pressure difference, the second elastic member 283 is pressed, the stress sensor arranged at the second elastic member 283 obtains corresponding stress data, when the stress data obtained by the stress sensor exceeds a predetermined value, the motor 20 is started to operate by the controller to drive the filter element structure 16 to rotate, and when the stress data obtained by the stress sensor is reduced to the predetermined value, the motor 20 can be controlled to stop operating to return to a normal oil removal state. In addition, the first elastic piece 282 and the second elastic piece 283 are respectively located at the upper end and the lower end of the piston 281, so that on one hand, the piston 281 can be protected, and on the other hand, the first elastic piece 282 can play a certain sealing role to prevent natural gas in the vertical gas flow channel 234 from flowing into the gas cavity 27 from the piston cavity; by adopting the arrangement mode of the first piston cavity and the second piston cavity, natural gas cannot enter the second piston cavity, so that the second elastic piece 283 can adopt a conventional spring and other structures, and corrosion of the spring by hydrogen sulfide and other gases in the natural gas can be ignored.
Preferably, the stress data detected by the stress sensor includes a first stress value and a second stress value, when the stress data gradually increases and reaches the first stress value, the controller controls to start the motor 20 to operate, and when the stress data gradually decreases to be lower than the second stress value, the controller controls the motor 20 to stop operating, wherein the first stress value is greater than the second stress value. This is provided to ensure that the motor 20 has sufficient operating time.
Further, the controller is also in control connection with a control device such as a valve on the pneumatic control pipeline 4, and when the motor 20 is started to operate, the controller controls the control device on the pneumatic control pipeline 4 to conduct the pneumatic control pipeline 4. Thus, part of the pressurized gas in the oil remover 5 enters the double valve 2 to realize the closing of the double valve 2.
Further, as shown in fig. 3, the oil collecting cover 14 has an upward flaring structure, the bottom of the oil collecting cover 14 has a vertical pipe structure, the air inlet 11 is disposed on a separation cavity at the bottom of the oil collecting cover 14, and the separation cavity is provided with a liquid level meter window 13. Through the setting of collection oil cover 14, separate degreaser 5 into two different cavities in the bottom, be equivalent to having carried out secondary separation, can improve the deoiling effect, adopt the flaring setting that makes progress, when the partial oil flow of the interior precipitation of buffer chamber 15, can be convenient for the oil flow inflow separation intracavity.
Finally, it is further noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The natural gas pressurizing, conveying and degreasing system comprises a separator (1), a duplex valve (2), pressurizing equipment (3), a gas control pipeline (4), a degreasing device (5) and a gas pipeline (6), wherein the separator (1) receives oil gas from a wellhead, a gas outlet (29) of the separator (1) is connected with the pressurizing equipment (3) through the gas pipeline (6), and an outlet of the pressurizing equipment (3) is connected with the degreasing device (5), and the system is characterized in that the duplex valve (2) is arranged on the gas pipeline (6), the duplex valve (2) can allow natural gas with a preset flow to pass through and is automatically closed when the flow exceeds a preset value, the duplex valve (2) is also connected to the degreasing device (5) through the gas control pipeline (4), the duplex valve (2) comprises two flow control valves (65) which are mutually connected in series, and the gas control pipeline (4) can introduce natural gas in the degreasing device (5) between the two flow control valves (65) so as to realize control closing of the duplex valve (2); the two flow control valves (65) have the same structure and comprise valve casings (651) and first magnetic valve plates (652) and second magnetic valve plates (653) arranged in the valve casings (651), the first magnetic valve plates (652) and the second magnetic valve plates (653) are arranged in the valve casings (651) in a sliding mode, the first magnetic valve plates (652) and the second magnetic valve plates (653) repel each other and are far away from each other initially, through holes for communicating the internal channels of the gas circuit pipelines (6) are formed in the first magnetic valve plates (652) and the second magnetic valve plates (653), and the through holes in the first magnetic valve plates (652) and the second magnetic valve plates (653) are staggered with each other, and when the first magnetic valve plates (652) and the second magnetic valve plates (653) are close to each other due to repulsive force overcome each other, the closing of the flow control valves (65) can be achieved;
the oil remover (5) comprises a base (9), a tank body (10), a top cover structure (19) and a motor (20) arranged on the top cover structure (19), wherein the tank body (10) is arranged on the base (9), the top of the tank body (10) is fixedly provided with the top cover structure (19) in a sealing manner, a rotatable filter element structure (16) is arranged in the tank body (10), and the filter element structure (16) is driven by the motor (20) to realize rotation;
the oil collecting cover (14), the filter element seat (21) and the filter element cover plate (26) are sequentially and fixedly arranged in the tank body (10) from bottom to top, the oil collecting cover (14), the filter element seat (21) and the filter element cover plate (26) sequentially divide the tank body (10) into a separation cavity, a buffer cavity (15), a filter cavity and a gas cavity (27) from bottom to top, wherein the filter element structure (16) is rotatably arranged in the filter cavity, and the top of the gas cavity (27) is sealed by the top cover structure (19);
the filter element structure (16) comprises a filter element support (23) and a filter layer (24), wherein the filter layer (24) is sleeved on the outer side of the filter element support (23), and the top of the filter element support (23) is fixedly connected with a rotating shaft (30) of the motor (20); the filter element bracket (23) comprises a first disc (231), a second disc (232) and a gas cylinder (233), the first disc (231) is rotationally arranged on the upper surface of the filter element seat (21), the second disc (232) is rotationally arranged on the lower surface of the filter element cover plate (26), the top of the second disc (232) is fixedly connected with a rotating shaft (30) of the motor (20), the first disc (231) is connected with the second disc (232) through the vertically arranged gas cylinder (233), the top of the gas cylinder (233) is connected on the lower surface of the second disc (232), the bottom of the gas cylinder (233) is fixedly penetrated in the middle of the first disc (231) and enables the bottom end of the gas cylinder (233) to extend below the bottom surface of the first disc (231), the filter element bracket (23) is rotationally arranged in a middle groove of the filter element seat (21) through a extending part below the bottom surface of the first disc (231), the middle of the filter element seat (21) is provided with a vertical gas flow channel (234), the middle of the filter element seat (21) is provided with a vertically arranged buffer cavity (15) which is communicated with the first gas cylinder (232) in the radial direction between the first disc (231) and the second disc (231), the filter layer (24) is sleeved on the outer side of a cylinder body positioned between the first disc (231) and the second disc (232) of the air guide cylinder (233), the diameters of the first disc (231) and the second disc (232) are the same, the diameter of the filter layer (24) is smaller than that of the first disc (231) and the second disc (232), guide channels which are mutually corresponding to each other in the vertical direction are formed on the second disc (232) and the filter element cover plate (26), initially, the guide channels of the second disc (232) and the filter element cover plate (26) are communicated, so that natural gas filtered by the filter layer (24) can flow into the air cavity (27) above the filter element cover plate (26) through the guide channels on the second disc (232) and the filter element cover plate (26), a closed oil collecting cavity (22) is formed on the outer side of a through hole positioned in the middle of the filter element seat (21), the top of the oil collecting cavity (22) is provided with an oil collecting hole, the oil collecting hole is formed in the top of the first disc (231), and the oil collecting hole (22) is not communicated with the oil collecting hole (231) of the first disc (20) when the rotating around the rotating shaft (30) is in the first disc (231);
be provided with the piston chamber in pivot (30), the piston chamber is close to second disc (232) and sets up, the piston intracavity is provided with piston (281), piston (281) are the style of calligraphy structure of falling T, it is including the piston dish that is located the bottom and connect the piston rod at the piston dish top, the diameter of piston dish is greater than the diameter of piston rod, the piston chamber includes first piston chamber and the second piston chamber of from bottom to top intercommunication, the piston dish slides and sets up in first piston chamber, the piston rod slides and sets up in the second piston chamber, the bottom that the first piston intracavity is located the piston dish is provided with first elastic component (282) that can follow first piston chamber slidable, the top that the second piston intracavity is located the piston rod is provided with second elastic component (283), the bottom in first piston chamber is provided with vertical direction's communication hole (284), the top in first piston chamber is provided with radial passageway (285) that are linked to gas chamber (27), first piston chamber is linked together to vertical gas flow channel (234) through communication hole (285) in bottom, first piston chamber is linked to gas chamber (27) through radial passageway (283) at top, second elastic component (283) are provided with motor (283) and are provided with and can be used for the controller and can be opened according to the controller 20 and can be used for confirming the controller.
2. A natural gas pressurized transport degreasing system as claimed in claim 1, wherein the gas line (6) comprises at least a first line (61), a second line (62) and a third line (63) connected in sequence, one of the two flow control valves (65) being connected between the first line (61) and the second line (62), the other of the two flow control valves (65) being connected between the second line (62) and the third line (63).
3. The natural gas pressurizing, conveying and degreasing system as claimed in claim 1, wherein the top cover structure (19) is in an 'i' -shape, the bottom of the top cover structure is a flange plate and is used for being connected with the top end of the tank body (10), the top of the top cover structure (19) is a mounting disc and is used for fixedly mounting the motor (20), a stand column is arranged between the mounting disc at the top and the flange plate at the bottom, and an output shaft of the motor (20), namely a rotating shaft (30), sequentially penetrates through the mounting disc, the stand column and the flange plate at the bottom from top to bottom and extends into the tank body (10); the outside of the tank body (10) is provided with a fixed seat (17), a stay bar (18) is rotationally arranged on the fixed seat (17), one end of the stay bar (18) is rotationally arranged on the fixed seat (17), and one end, far away from the fixed seat (17), of the stay bar (18) is rotationally sleeved on the upright post.
4. The system of claim 1, wherein the stress data detected by the stress sensor includes a first stress value and a second stress value, the controller controls to start the motor (20) to operate when the stress data gradually increases and reaches the first stress value, and controls the motor (20) to stop operating when the stress data gradually decreases below the second stress value, the first stress value being greater than the second stress value.
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|---|---|---|---|
| CN202310660892.7A CN116379346B (en) | 2023-06-06 | 2023-06-06 | Natural gas pressurizing, conveying and deoiling system |
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| CN202310660892.7A CN116379346B (en) | 2023-06-06 | 2023-06-06 | Natural gas pressurizing, conveying and deoiling system |
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| CN116379346B true CN116379346B (en) | 2023-07-28 |
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