CN113202727B - Wellhead supercharging reciprocating natural gas compressor unit - Google Patents
Wellhead supercharging reciprocating natural gas compressor unit Download PDFInfo
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- CN113202727B CN113202727B CN202110391661.1A CN202110391661A CN113202727B CN 113202727 B CN113202727 B CN 113202727B CN 202110391661 A CN202110391661 A CN 202110391661A CN 113202727 B CN113202727 B CN 113202727B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
Abstract
The invention provides a wellhead boosting reciprocating type natural gas compressor unit which comprises an integrated base, a separator adapting to wellhead gas quality, a reciprocating compressor host adapting to pressure and flow fluctuation, a process gas pipeline, a lubricating oil system, a venting system, a sound insulation room, a PLC (programmable logic controller) control system, an audible and visual alarm system and the like. The air inlet valves of each stage are provided with the unloading devices to realize single and double-acting switching of compression of cylinders with different stages, so that the requirement of a unit for adapting to wellhead pressure and gas quantity changes is met. The wellhead supercharging reciprocating type natural gas compressor unit solves the problems of large investment in shale gas exploitation, collection and transportation equipment, high operation and maintenance cost and high environmental protection requirement, and realizes unattended operation of wellhead equipment and stable long-period operation.
Description
Technical Field
The invention relates to the field of shale gas exploitation, in particular to a wellhead boosting reciprocating natural gas compressor unit.
Background
The reciprocating natural gas compressor is a machine for compressing gas to raise gas pressure, and is mainly used in the fields of test gas recovery, wellhead gas collection treatment, gas lift gas production, pressurization and transportation, etc. At present, large-scale shale gas exploitation is being carried out in Fuling and Nanchuan areas, gas wells are mostly built in mountain areas, the distance spans among different gas wells are large, the workload of transportation, installation, operation and maintenance is large, the gas quantity and the pressure among the well heads in different areas are greatly different, and the requirements on environmental protection and noise for protecting mountain area environments are very high, so that the requirements on supercharging equipment are very high.
Chinese patent "CN 202187887U" provides a wellhead natural gas compression system, which relates to simple compression filtration of wellhead natural gas, but needs to ensure safety when the wellhead is used for in-situ exploiting natural gas, and the pipeline arrangement and the equipment installation need to be considered seriously, so that the maintenance and repair of the equipment are performed more regularly and safely, the exploiting and compression of natural gas has larger noise, and noise reduction treatment is also needed.
Chinese patent CN 201953354U provides a portable wellhead gas collection system, has involved the filtration compression separation of wellhead natural gas exploitation, but arbitrary natural gas exploitation safety problem exists, can't accomplish natural gas wellhead exploitation unmanned on duty, and whole equipment security performance is not enough, very easily causes the potential safety hazard.
Disclosure of Invention
The invention mainly aims to provide a wellhead supercharged reciprocating natural gas compressor unit, which solves the problems that a great amount of manpower and material resources are required to be input for shale gas exploitation, collection and transportation, the environment-friendly requirement is met, and the unattended requirement is realized.
In order to solve the technical problems, the invention adopts the following technical scheme: the system comprises a skid-mounted noise reduction room, wherein a compression separation cooling assembly is arranged in the noise reduction room and is connected in series between a mining pipeline and a storage pipeline, an air inlet pipeline in the compression separation cooling assembly is communicated with the mining pipeline, an air outlet pipeline is communicated with the storage pipeline, and a pipeline communicated with the air inlet pipeline and the air outlet pipeline is provided with a primary separator, a primary compression cylinder, a secondary air cooler, a secondary separator, a secondary compression cylinder, a secondary air cooler and a tertiary separator which are sequentially communicated;
the device is characterized by further comprising a PLC control cabinet and a distribution box, wherein the PLC control cabinet is used for collecting indexes of pressure, temperature, liquid level of the separator and natural gas concentration of each part in the operation process of the compression separation cooling assembly, and is used for fault alarming, shutdown, online monitoring and remote operation, and the distribution box is used for supplying power to each electric device in the compression separation cooling assembly.
In the preferred scheme, the automatic identification and operation of wellhead air quantity and pressure fluctuation are realized, the wellhead air quantity is guaranteed to be conveyed in time, and the wellhead air quantity is small and is not stopped.
In the preferred scheme, one end of the primary compression cylinder is provided with a primary air inlet buffer tank communicated with the primary compression cylinder, the other end of the primary compression cylinder is provided with a primary air outlet buffer tank communicated with the primary compression cylinder, the end part of the primary air inlet buffer tank is communicated with the primary separator, and the end part of the primary air outlet buffer tank is communicated with the primary air cooler.
In the preferred scheme, the one-level compression cylinder is two sets of, and two sets of one-level compression cylinder are equipped with solitary one-level buffer tank that admits air and one-level exhaust buffer tank, and the one-level buffer tank that admits air in two sets of one-level compression cylinder communicates with one-level separator, and one-level exhaust buffer tank communicates with one-level air cooler.
In the preferred scheme, one end of the secondary compression cylinder is provided with a secondary air inlet buffer tank communicated with the secondary compression cylinder, the other end of the secondary compression cylinder is provided with a secondary air outlet buffer tank communicated with the secondary compression cylinder, the end part of the secondary air inlet buffer tank is communicated with the secondary separator, and the secondary air outlet buffer tank is communicated with the secondary air cooler.
In the preferred scheme, a drain pipeline is further arranged and is communicated with drain outlets of the primary separator, the secondary separator and the tertiary separator through a valve control assembly, the primary separator, the secondary separator and the tertiary separator adopt a cyclone separation and silk screen demister dual-filtration structure to remove a large amount of foam, water and other impurities generated at a wellhead, and a differential pressure type liquid level transmitter linkage control valve is adopted to realize automatic drain of foam, water, oil dirt and other impurities.
In the preferred scheme, the air-conditioning unit is also provided with an air-discharging pipeline, and the air-discharging pipeline is communicated with the air inlet pipeline, the pipeline communicated with the primary air cooler by the primary compression cylinder and the pipeline communicated with the secondary air cooler by the valve control assembly, so that the unit is convenient to stop, maintain and overhaul, and discharge the gas in the pipeline.
In the preferred scheme, the pipeline that air inlet pipeline, one-level compression cylinder and one-level air cooler communicate and two-level compression cylinder and two-level air cooler communicate are all equipped with the relief valve, and the import and export department of relief valve installs the stop valve.
In the preferred scheme, be equipped with the direct-connected pipeline between exhaust line and the air intake line, be equipped with valve control assembly on the direct-connected pipeline, the air pressure that the air intake line lets in is greater than the pipe network pressure back and directly discharges from exhaust line.
In the preferred scheme, the house of making an uproar is installed on the base, installs air inlet muffler, audible and visual alarm on the room body, and inside is provided with natural gas concentration alarm, camera, illumination, hoist and mount dolly, and wherein hoist and mount dolly adopts truss structure, can move in two directions, realizes the hoist and mount of the inside maintenance equipment of unit.
The invention provides a wellhead boosting reciprocating type natural gas compressor unit, which has the advantages that:
1. according to the invention, a skid-mounted noise reduction room, a separator adapting to wellhead gas quality, a reciprocating compressor host adapting to pressure and flow fluctuation, a process gas pipeline, a lubricating oil system, a venting system, a sound insulation room, a PLC control system and an audible and visual alarm system are designed, so that quick moving and quick assembly of a unit are realized, gas amounts of different wellheads are allocated, and the unit is unattended;
2. the compressor main machine adopts a completely symmetrical balance structure, and each stage of air inlet valve is provided with an unloader to realize single and double-acting switching of compression of cylinders with different stages so as to meet the requirement of a unit for adapting to wellhead pressure and air quantity change;
3. in the shale gas exploitation process, a foam drainage process is adopted, and in order to ensure the fault-free operation of a unit, a cyclone and silk screen foam remover is adopted for double filtration of a separator, and a differential pressure type liquid level transmitter is used for interlocking an electric valve to discharge impurities such as foam, water, oil stains and the like carried by gas;
4. the unit sets up PLC control system, monitors unit pressure, temperature, liquid level, natural gas concentration, equipment vibration value, the inside camera of unit, can realize fault alarm, shut down, on-line monitoring, and the unit sets up the pressure monitoring that admits air to can automatic chain main motor carries out variable frequency motor speed governing, realize the automatic identification of well head tolerance and pressure fluctuation, guarantee that the well head tolerance is big in time to carry, and the small non-stop operation of well head tolerance.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a general flow chart of the present invention;
FIG. 2 is a front view of the overall mounting structure of the present invention;
FIG. 3 is a top view of the integral mounting structure of the present invention;
FIG. 4 is an overall control flow diagram of the present invention;
in the figure: an exhaust line 1; a sewage drain line 2; an intake line 3; a vent line 4; a primary separator 5; a primary air intake buffer tank 6; a first stage compression cylinder 7; a primary exhaust buffer tank 8; a primary air cooler 9; a secondary separator 10; a secondary intake buffer tank 11; a secondary compression cylinder 12; a secondary exhaust buffer tank 13; a secondary air cooler 14; a three-stage separator 15; a cooler assembly 16; a driving machine 17; a compressor 18; a PLC control cabinet 19; a distribution box 20; a noise reduction room 21; hoisting trolley 22; an air intake duct 23; an air outlet duct 24; a nitrogen inlet 25; a nitrogen outlet 26.
Detailed Description
Example 1
As shown in fig. 1-4, a wellhead boosting reciprocating natural gas compressor unit comprises a skid-mounted noise reduction room 21, a compression separation cooling assembly is arranged in the noise reduction room 21, the compression separation cooling assembly is connected in series between a mining pipeline and a storage pipeline, an air inlet pipeline 3 in the compression separation cooling assembly is communicated with the mining pipeline, an exhaust pipeline 1 is communicated with the storage pipeline, and a pipeline communicated with the air inlet pipeline 3 and the exhaust pipeline 1 is provided with a primary separator 5, a primary compression cylinder 7, a secondary air cooler 14, a secondary separator 10, a secondary compression cylinder 12, a secondary air cooler 14 and a tertiary separator 15 which are sequentially communicated;
the device is also provided with a PLC control cabinet 19 and a distribution box 20, wherein the PLC control cabinet 19 is used for collecting indexes of pressure, temperature, liquid level of a separator and natural gas concentration of each part in the operation process of the compression separation cooling assembly, and is used for fault alarm, shutdown, on-line monitoring and remote operation, and the distribution box 20 is used for supplying power to each electric device in the compression separation cooling assembly. According to the structure, shale gas exploitation is introduced into the air inlet pipeline 3, a series of gas separation and compression processes are completed, shale gas exploitation is carried out, high-pressure and high-temperature gas compressed by the compressor 18 passes through the primary air cooler 9 and the secondary air cooler 14, the primary air cooler 9 and the secondary air cooler 14 are respectively provided with the cooler assembly 16, the cooled gas enters the next stage of compression or external transmission, the cooler assembly 16 is provided with vibration monitoring, the running condition of equipment is monitored, and the PLC control cabinet 19 collects air inlet pressure, air inlet temperature, each stage of exhaust pressure, exhaust temperature, outlet pipeline pressure, separator liquid level, natural gas concentration and equipment vibration value signals in the running process of the unit, so that fault alarm, shutdown, on-line monitoring and remote operation are realized, and the normal running of the whole equipment is ensured.
In the preferred scheme, a compressor 18 is further arranged, the compressor 18 is driven by a driver 17 to enable the primary compression cylinder 7 and the secondary compression cylinder 12 to compress, the driver 17 can perform variable frequency speed regulation according to the monitoring linkage of the inlet pressure, automatic identification and operation of wellhead gas quantity and pressure fluctuation are realized, the wellhead gas quantity is guaranteed to be delivered in time, and the wellhead gas quantity is small and is not stopped. According to the structure, the driving machine 17 adopts a variable frequency motor or a power frequency motor according to shale gas exploitation requirements, and monitors the interlocking main motor according to the air inlet pressure to carry out motor variable frequency speed regulation, so that automatic identification and operation of wellhead air quantity and pressure fluctuation are realized, the wellhead air quantity is guaranteed to be conveyed in time, and the wellhead air quantity is small and the operation is not stopped. The compressor 18 adopts a symmetrical balance structure, the primary compression cylinder 7 and the secondary compression cylinder 12 are respectively arranged on two sides of the host, the unit is checked by performance calculation software of the compressor 18, the arrangement mode is not limited to the arrangement mode that the unit is arranged on one side of the host by the same compression stage, each stage of air inlet valve is provided with an unloader to realize single and double-acting switching of compression of different stages of cylinders so as to meet the requirement of the unit for adapting to wellhead pressure and air quantity change, the type of the unloader is pneumatic, an air source is taken from a clean air source at the top of an outlet separator, and a small air compressor can also be adopted.
In the preferred scheme, one end of a primary compression cylinder 7 is provided with a primary air inlet buffer tank 6 communicated with the primary compression cylinder, the other end of the primary compression cylinder is provided with a primary air outlet buffer tank 8 communicated with the primary compression cylinder, the end part of the primary air inlet buffer tank 6 is communicated with a primary separator 5, and the end part of the primary air outlet buffer tank 8 is communicated with a primary air cooler 9. With this structure, the primary exhaust buffer tank 8 and the primary intake buffer tank 6 store the gas, and the compressed gas is ensured to be delivered.
In the preferred scheme, the one-level compression cylinder 7 is two sets of, and two sets of one-level compression cylinder 7 are equipped with solitary one-level and advance air buffer tank 6 and one-level exhaust buffer tank 8, and the one-level that advances among the two sets of one-level compression cylinder 7 advances air buffer tank 6 and one-level separator 5 intercommunication, one-level exhaust buffer tank 8 and one-level air cooler 9 intercommunication. From this structure, one-level compression cylinder 7 is two, can carry out quick compression to the gas that just explored to can accelerate collection efficiency, control the conversion according to the demand, start one-level compression cylinder 7 or start two, with this various operating modes of being suitable for.
In a preferred scheme, one end of the secondary compression cylinder 12 is provided with a secondary air inlet buffer tank 11 communicated with the secondary compression cylinder, the other end of the secondary compression cylinder is provided with a secondary air outlet buffer tank 13 communicated with the secondary compression cylinder, the end part of the secondary air inlet buffer tank 11 is communicated with the secondary separator 10, and the secondary air outlet buffer tank 13 is communicated with the secondary air cooler 14. With this structure, the secondary intake buffer tank 11 and the secondary exhaust buffer tank 13 store the gas, and the secondary compression cylinder 12 is ensured to compress the gas normally.
In the preferred scheme, a drain pipeline 2 is further arranged, the drain pipeline 2 is communicated with drain outlets of the primary separator 5, the secondary separator 10 and the tertiary separator 15 through a valve control assembly, the primary separator 5, the secondary separator 10 and the tertiary separator 15 adopt a cyclone separation and silk screen foam remover dual-filtration structure to remove a large amount of foam, water and other impurities generated at a wellhead, and a differential pressure type liquid level transmitter interlocking control valve is adopted to realize automatic drain of foam, water, oil dirt and other impurities. According to the structure, a foam drainage process is adopted in the shale gas exploitation process, a large amount of foam is generated in a pipe network to carry oil-water and other impurities to enter the compressor 18, cyclone separation and wire mesh demister double filtration is adopted in the separator to ensure that a unit runs without faults, a differential pressure type liquid level transmitter is used for interlocking an electric valve to discharge the foam, water, oil stains and other impurities carried by gas, the primary separator 5 can filter the impurities in the initial shale gas, the secondary separator 10 and the tertiary separator 15 can filter the moisture generated after the gas passes through the primary air cooler 9 and the secondary air cooler 14 and is cooled, and the dryness of the exploited gas is ensured.
In the preferred scheme, the air-conditioning system is also provided with an air-conditioning pipeline 4, and the air-conditioning pipeline 4 is communicated with the air inlet pipeline 3, a pipeline communicated with the primary air cooler 9 by the primary compression cylinder 7 and a pipeline communicated with the secondary air cooler 14 by the secondary compression cylinder 12 through valve control assemblies, so that the machine unit is convenient to stop, maintain and overhaul, and release the gas in the pipeline. From this structure, the blowdown pipeline 4 sets up two way blowdown systems of manual valve blowdown parallelly connected automatic valve blowdown to this reply emergency, under the emergency such as pressure anomaly or pipeline destruction, accessible blowdown pipeline 4 carries out quick transfer to the gas of gathering, guarantees safety, still can be convenient for the unit shut down maintenance and overhaul to the gas in the pipeline release.
In the preferred scheme, the air inlet pipeline 3, the pipeline of the first-stage compression cylinder 7 communicated with the first-stage air cooler 9 and the pipeline of the second-stage compression cylinder 12 communicated with the second-stage air cooler 14 are respectively provided with a safety valve, and the inlet and outlet of the safety valve are provided with a stop valve. From this structure, all install the relief valve on the gas pipeline after inlet line 3, the cylinder compression at every stage, the relief valve import and export and set up the stop valve, close import and export stop valve after the unit shut down, disassemble the relief valve and carry out the check-up back dress, guarantee whole pipeline operation safety, overhaul more convenient and fast.
In the preferred scheme, be equipped with the direct-connected pipeline between exhaust line 1 and the air intake line 3, be equipped with valve control assembly on the direct-connected pipeline, the gas pressure of air intake line 3 lets in is greater than the pipe network pressure back and directly discharges from exhaust line 1. With the structure, the check valve and ball valve serial pipelines are arranged on the direct connection pipeline, and when the wellhead gas pressure is greater than the back pressure of the gas transmission pipe network, the incoming gas of the gas inlet pipeline 3 can be directly discharged to the gas exhaust pipeline 1 for transmission without being compressed by the compressor 18.
In the preferred scheme, the room 21 of making an uproar falls installs on the base, installs air inlet muffler, muffler of airing exhaust, audible and visual alarm on the room body, and inside is provided with natural gas concentration alarm, camera, illumination, hoist and mount dolly 22, and wherein hoist and mount dolly 22 adopts truss structure, can move in two directions, realizes the hoist and mount of the inside maintenance equipment of unit. From this structure, can make an uproar the compression separation cooling module running condition in the room 21 of making an uproar and carry out real-time supervision, be convenient for realize long-range unmanned control, hoist and mount dolly 22 can be convenient for the hoist and mount to the equipment in the compression separation cooling module, be convenient for maintain the equipment of overhauling.
In the preferred scheme, as shown in fig. 4, a nitrogen inlet 25 and a nitrogen outlet 26 are arranged on one side of a control valve group in the air inlet pipeline 3 and the air outlet pipeline 1, nitrogen can be introduced from the nitrogen inlet 25 and filled into pipeline equipment in the compression separation cooling assembly, so that residual natural gas in the compression separation cooling assembly is discharged from the nitrogen inlet 25 together, and the whole compression separation cooling assembly is convenient to maintain and install.
In the preferred scheme, as shown in fig. 2, the air inlet pipeline 23 and the air outlet pipeline 24 are respectively arranged at two sides of the noise reduction room 21, so that the ventilation in the noise reduction room 21 is ensured, the potential safety hazard caused by the excessive concentration after the natural gas exploitation leakage is avoided, and the normal operation of equipment in the noise reduction room 21 is ensured.
Example 2
By further describing the embodiment 1, as shown in fig. 1-4, the invention realizes quick moving and quick assembling of the unit, gas distribution of different wellheads and unattended operation of the unit by designing the skid-mounted noise reduction room 21, the separator adapting to wellhead gas quality, the reciprocating compressor host adapting to pressure and flow fluctuation, the process gas pipeline, the lubricating oil system, the emptying system, the sound insulation room, the PLC control system and the audible and visual alarm system. The technical scheme of the invention takes a four-cylinder two-stage piston type compression design as an example, a reciprocating compressor main machine adopts a completely symmetrical balance structure, and each stage of air inlet valve is provided with an unloader to realize single and double-acting switching of compression of different stages of cylinders so as to meet the requirement of a unit for adapting to wellhead pressure and gas quantity change. The unit adopts sled dress formula room 21 of making an uproar that falls, and the sound insulation cover is installed on the base, adopts cushion contact seal, and the complete machine noise value satisfies "industry factory boundary environmental noise emission standard" (GB 12348) and requires the level 3 standard. In the shale gas exploitation process, a foam drainage process is adopted, in order to ensure the fault-free operation of a unit, a cyclone and silk screen foam remover is adopted for double filtration of a separator, and a differential pressure type liquid level transmitter is used for interlocking an electric valve to discharge impurities such as foam, water, oil stains and the like carried by gas. The unit is provided with a PLC control system, and can monitor the pressure, temperature, liquid level, natural gas concentration, equipment vibration value and camera inside the unit, thereby realizing fault alarm, shutdown and on-line monitoring. The unit is provided with an air inlet pressure monitor, and can automatically link the main motor to carry out variable frequency motor speed regulation, so that automatic identification of wellhead air quantity and pressure fluctuation is realized, the wellhead air quantity is ensured to be conveyed in time, and the wellhead air quantity is small and the operation is not stopped. The equipment is in standardized structural configuration, so that the universality and interchangeability of parts such as the air valve, the packing, the piston rod and the like can be realized, and the running maintenance and purchasing cost of a user is reduced.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (5)
1. Wellhead pressurized reciprocating type natural gas compressor unit, characterized by: the device comprises a skid-mounted noise reduction room (21), wherein a compression separation cooling assembly is arranged in the noise reduction room (21), the compression separation cooling assembly is connected in series between a mining pipeline and a storage pipeline, an air inlet pipeline (3) in the compression separation cooling assembly is communicated with the mining pipeline, an exhaust pipeline (1) is communicated with the storage pipeline, and a pipeline communicated with the air inlet pipeline (3) and the exhaust pipeline (1) is provided with a primary separator (5), a primary compression cylinder (7), a primary air cooler (9), a secondary separator (10), a secondary compression cylinder (12), a secondary air cooler (14) and a tertiary separator (15) which are sequentially communicated;
the system is also provided with a PLC control cabinet (19) and a distribution box (20), wherein the PLC control cabinet (19) is used for collecting indexes of pressure, temperature, liquid level of a separator and natural gas concentration of each part in the operation process of the compression separation cooling assembly, and is used for fault alarming, shutdown, online monitoring and remote operation, and the distribution box (20) is used for supplying power to each electric device in the compression separation cooling assembly;
the device is also provided with a compressor (18), the compressor (18) is driven by a driver (17) to compress the primary compression cylinder (7) and the secondary compression cylinder (12), the driver (17) can perform variable frequency speed regulation according to the monitoring linkage of the inlet pressure, the automatic identification and operation of wellhead gas quantity and pressure fluctuation are realized, the timely delivery of wellhead gas quantity is ensured, and the wellhead gas quantity is small and does not stop;
the device is also provided with a drain pipeline (2), the drain pipeline (2) is communicated with drain outlets of the primary separator (5), the secondary separator (10) and the tertiary separator (15) through a valve control assembly, the primary separator (5), the secondary separator (10) and the tertiary separator (15) adopt a cyclone separation and silk screen foam remover dual-filtration structure to remove a large amount of foam and water impurities generated at a wellhead, and a differential pressure type liquid level transmitter interlocking control valve is adopted to realize automatic drain of the foam, water and greasy dirt impurities;
a direct connecting pipeline is arranged between the exhaust pipeline (1) and the air inlet pipeline (3), a valve control assembly is arranged on the direct connecting pipeline, and the air pressure introduced by the air inlet pipeline (3) is higher than the pipe network pressure and then is directly discharged from the exhaust pipeline (1);
the device is also provided with an emptying pipeline (4), the emptying pipeline (4) is communicated with the air inlet pipeline (3), a pipeline which is communicated with the primary air cooler (9) through a valve control assembly, and a pipeline which is communicated with the secondary air cooler (14) through the secondary compression cylinder (12), so that the shutdown maintenance of the unit is facilitated, and the gas in the pipeline is discharged;
the noise reduction room (21) is arranged on the base, the room body is provided with an air inlet silencer, an air exhaust silencer and an audible and visual alarm, the inside of the room body is provided with a natural gas concentration alarm, a camera, illumination and a hoisting trolley (22), wherein the hoisting trolley (22) adopts a truss structure and can move in two directions, so that the hoisting of the overhaul equipment inside the unit is realized.
2. The wellhead pressurized reciprocating natural gas compressor assembly of claim 1, wherein: one end of the primary compression cylinder (7) is provided with a primary air inlet buffer tank (6) communicated with the primary compression cylinder, the other end of the primary compression cylinder is provided with a primary air outlet buffer tank (8) communicated with the primary compression cylinder, the end part of the primary air inlet buffer tank (6) is communicated with the primary separator (5), and the end part of the primary air outlet buffer tank (8) is communicated with the primary air cooler (9).
3. The wellhead pressurized reciprocating natural gas compressor assembly of claim 2, wherein: the one-level compression cylinder (7) is two sets of, and two sets of one-level compression cylinder (7) are equipped with solitary one-level buffer tank (6) and one-level exhaust buffer tank (8), and one-level buffer tank (6) and one-level separator (5) intercommunication are admitted air in two sets of one-level compression cylinder (7), and one-level exhaust buffer tank (8) and one-level air cooler (9) intercommunication.
4. The wellhead pressurized reciprocating natural gas compressor assembly of claim 1, wherein: one end of the secondary compression cylinder (12) is provided with a secondary air inlet buffer tank (11) communicated with the secondary compression cylinder, the other end of the secondary compression cylinder is provided with a secondary air outlet buffer tank (13) communicated with the secondary compression cylinder, the end part of the secondary air inlet buffer tank (11) is communicated with the secondary separator (10), and the secondary air outlet buffer tank (13) is communicated with the secondary air cooler (14).
5. The wellhead pressurized reciprocating natural gas compressor assembly of claim 1, wherein: the air inlet pipeline (3), the pipeline for the first-stage compression cylinder (7) to be communicated with the first-stage air cooler (9) and the pipeline for the second-stage compression cylinder (12) to be communicated with the second-stage air cooler (14) are respectively provided with a safety valve, and a stop valve is arranged at the inlet and outlet of the safety valve.
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| CN202110391661.1A CN113202727B (en) | 2021-04-13 | 2021-04-13 | Wellhead supercharging reciprocating natural gas compressor unit |
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| CN202110391661.1A CN113202727B (en) | 2021-04-13 | 2021-04-13 | Wellhead supercharging reciprocating natural gas compressor unit |
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| CN113756768A (en) * | 2021-09-03 | 2021-12-07 | 中石化石油机械股份有限公司三机分公司 | Flue gas high-pressure gas injection oil displacement and oil field production equipment |
| CN114263851B (en) * | 2021-11-17 | 2024-04-19 | 中国石油化工集团有限公司 | Shale gas production device and process |
| CN116677918B (en) * | 2023-06-06 | 2024-01-30 | 武汉齐达康能源装备有限公司 | Well head gas conveying device of coal bed gas drainage and production well and using method |
| CN117189045B (en) * | 2023-09-04 | 2024-03-19 | 武汉齐达康能源装备有限公司 | Well head gas pressurizing equipment and using method |
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| CN201894897U (en) * | 2010-12-07 | 2011-07-13 | 宁夏三新热超导技术有限公司 | Natural gas separator |
| CN202705328U (en) * | 2012-08-31 | 2013-01-30 | 中国石油化工集团公司 | Skidded complete set of device for collecting and processing oil field gas |
| CN203530268U (en) * | 2013-11-15 | 2014-04-09 | 中国石油集团渤海石油装备制造有限公司 | Integrated device for natural gas compression |
| US10274133B2 (en) * | 2016-06-29 | 2019-04-30 | Thomas Kunkel | All-in-one skid assembly |
| CN106196775B (en) * | 2016-07-29 | 2019-06-28 | 青岛开拓隆海制冷配件有限公司 | A kind of oil eliminator and its separation method applied to refrigeration system |
| CN205991330U (en) * | 2016-08-12 | 2017-03-01 | 中石化石油机械股份有限公司压缩机分公司 | A kind of width operating mode well head gas recovery compressor |
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