CN111998224B - Bidirectional separation metering device - Google Patents
Bidirectional separation metering device Download PDFInfo
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- CN111998224B CN111998224B CN202010965760.1A CN202010965760A CN111998224B CN 111998224 B CN111998224 B CN 111998224B CN 202010965760 A CN202010965760 A CN 202010965760A CN 111998224 B CN111998224 B CN 111998224B
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- gear
- separator
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- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 65
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003345 natural gas Substances 0.000 claims abstract description 27
- 239000003381 stabilizer Substances 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract 10
- 230000008676 import Effects 0.000 claims abstract 4
- 238000007599 discharging Methods 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 8
- 239000002343 natural gas well Substances 0.000 abstract description 2
- 238000005213 imbibition Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- 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
- F17D1/005—Pipe-line systems for a two-phase gas-liquid flow
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- 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
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/10—Arrangements for supervising or controlling working operations for taking out the product in the line
-
- 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
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanically-Actuated Valves (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention belongs to the field of natural gas well separation metering devices, and particularly relates to a bidirectional separation metering device. The utility model provides a two-way separation metering device, includes separator, gas flowmeter and liquid flowmeter, and the separator import is located upper portion, and the separator top is provided with the gas vent, is connected through the exhaust pipeline between gas vent and the gas flowmeter, and the separator bottom is provided with the leakage fluid dram, is connected through the leakage fluid pipeline between leakage fluid dram and the liquid flowmeter, has concatenated the constant voltage current stabilizer on the blast pipe between gas flowmeter to the gas vent, has concatenated mechanical type natural gas water delivery valve on the leakage fluid pipeline between leakage fluid dram to the liquid flowmeter, the constant voltage current stabilizer include two piston cylinders, thereby two piston cylinders drive through actuating mechanism one imbibition another at uniform velocity flowing back, two piston cylinders work in turn. The invention solves the problem of low measurement precision of the gas flowmeter caused by unstable flow velocity of the gas flow passing through the gas flowmeter.
Description
Technical Field
The invention belongs to the field of natural gas well separation metering devices, and particularly relates to a bidirectional separation metering device.
Background
The single well yield measurement of the gas well is one of important technical problems in the field of natural gas production, production data such as gas yield and liquid yield are basic data for monitoring formation water outlet, optimizing gas field production allocation and ensuring reasonable exploitation of a gas reservoir, and are important bases for development of geological analysis and production decision making. In the prior art, single well separation metering devices exist, and a separator is adopted to separate each phase and then meter the separated phases. The problems with this measurement are still: (1) The pressure of the mixed medium extracted from the wellhead is unstable, and the separator does not have a pressure stabilizing function, so that the gas phase flow rate output after separation is not constant, the gas flow passing through the gas flowmeter is fluctuated, and finally, the gas phase metering is inaccurate. (2) the measurement method cannot be used for online metering.
Disclosure of Invention
The technical scheme provided by the invention is as follows: the bidirectional separation metering device comprises a separator, a gas flowmeter and a liquid flowmeter, wherein the separator is of a horizontal structure, an inlet of the separator is positioned at the upper part, an inlet stop valve and a pressure gauge are arranged at the inlet end of the separator, an exhaust port is arranged at the top of the separator, the exhaust port is connected with the gas flowmeter through an exhaust pipeline, the exhaust pipeline is connected with the exhaust stop valve in series, a liquid outlet is arranged at the bottom of the separator, the liquid outlet is connected with the liquid flowmeter through a liquid outlet pipeline, and the liquid outlet pipeline is connected with the liquid outlet stop valve in series; the exhaust pipe between the exhaust cut-off valve and the gas flowmeter is connected with a constant pressure current stabilizer in series, the exhaust pipe between the upper part and the lower part of the constant pressure current stabilizer is connected with a pressure gauge in series, the constant pressure current stabilizer comprises two piston cylinders, a counterweight piston is arranged in a sliding seal mode in each piston cylinder, a rack is fixedly connected to the upper end of the counterweight piston, the bottom of the piston cylinder is connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with an air inlet check valve and an air inlet cut-off valve in series, the air outlet pipe is connected with an air outlet check valve and an air outlet cut-off valve in series, and the two racks are driven by a driving mechanism;
the driving mechanism comprises a double-headed motor, a large driving gear A, a small driving gear A, a large driving gear B, a small driving gear B, a large driven gear A, a small driven gear A, a large driven gear B and a small driven gear B, wherein the large driving gear A and the small driving gear A are coaxial and are fixedly connected with a shaft; the large driving gear B and the small driving gear B are coaxial and are fixedly connected with the shaft; the large driven gear A and the small driven gear A are coaxial and are fixedly connected with the shaft; the large driven gear B and the small driven gear B are coaxial and are fixedly connected with the shaft; the large driving gear A and the small driving gear A are positioned at one end of the double-head motor shaft, the large driving gear B and the small driving gear B are positioned at the other end of the double-head motor shaft, the large driven gear A is meshed with the small driving gear B, the small driven gear A is meshed with the large driving gear A, the large driven gear B is meshed with the small driving gear A, and the small driven gear B is meshed with the large driving gear B;
the large driving gear A and the large driving gear B respectively comprise an outer fluted disc and an inner gear, the inner gear rotates along with the shaft, the outer fluted disc does not rotate along with the shaft, a one-way clutch mechanism is fixedly connected on the outer fluted disc and comprises a supporting rod and a cam, one end of the supporting rod is hinged on the outer fluted disc, the other end of the supporting rod is propped against the inner gear so as to realize one-way clutch between the inner gear and the outer fluted disc, a spring is arranged between the supporting rod and the outer fluted disc, and the supporting rod has a trend of approaching to the inner gear under the action of spring force; the small driven gear A and the small driven gear B are respectively meshed with the two racks;
a mechanical natural gas water delivery valve is connected in series on a liquid discharge pipeline between the liquid discharge cut-off valve and the liquid flowmeter, the mechanical natural gas water delivery valve comprises two cylinders with left and right structures, which are respectively called a left cylinder and a right cylinder, the two cylinders are communicated, and the height of the right cylinder is lower than that of the left cylinder; the top end of the left cylinder body is connected with an air return pipeline which is communicated with an exhaust pipeline at the upstream of the exhaust cut-off valve, the upper part of the left cylinder body is provided with a water inlet, and the inner side of the left cylinder body is provided with a floating ball; the valve comprises a valve seat, a valve core and a lever mechanism, wherein the valve core is inserted in the valve seat in a sealing way, a side hole communicated with the water outlet is formed in the bottom of the valve seat, an axial blind hole and a radial through hole are formed in the valve core, the axial blind hole and the radial through hole are communicated to form a water outlet channel, the upper end of the valve core is connected with the lever mechanism, and the other end of the lever mechanism is connected with the lower end of the floating ball; the lower ends of the left cylinder body and the right cylinder body are respectively provided with a sewage outlet;
the top end of the separator is connected with a safety pipeline and an emptying pipeline, and the safety pipeline is connected with a safety valve and a safety valve cut-off valve in series; the lower end of the separator is connected with a slag discharging pipeline, and the slag discharging pipeline is connected with a slag discharging cut-off valve in series; the separator is internally provided with a high-level liquid level gauge and a low-level liquid level gauge.
The bidirectional separation metering device also comprises a solar power supply system, and the solar power supply system supplies power for the bidirectional separation metering device.
The beneficial effects of the invention are as follows:
(1) According to the invention, the constant-pressure current stabilizer is connected in series between the gas outlet of the separator and the gas flowmeter, so that the flow speed of the gas passing through the gas flowmeter is kept constant, and the measurement accuracy of the gas flowmeter is ensured to be high.
(2) The separator is internally provided with an upper liquid level gauge and a lower liquid level gauge, after the liquid level reaches the upper limit, liquid and sediment are discharged through the liquid outlet, and when the liquid level is lowered to the lower limit, the liquid outlet is automatically closed. Therefore, the bottom of the separator always stores liquid, the liquid seal is used for blocking gas by liquid, and the separated gas phase is completely discharged through the gas outlet, so that the invention can realize online metering.
(3) According to the invention, the liquid and the sediments discharged from the liquid outlet pass through the mechanical natural gas water conveying valve, the mechanical natural gas water conveying valve has the function of separating gas from liquid again, the paths of gas phase and liquid phase are fully ensured, the metering is carried out independently, and the metering accuracy is further improved.
Drawings
Fig. 1 is a process flow diagram of the present invention.
FIG. 2 is a schematic diagram of a constant voltage current stabilizer according to the present invention.
Fig. 3 is a schematic structural view of the driving mechanism in the present invention.
Fig. 4 is a schematic view of the structure of the large driving gear in the present invention.
Fig. 5 is a schematic structural view of a mechanical natural gas water transfer valve according to the present invention.
In the figure: 1-separator, 2-safety line, 3-vent line, 4-vent, 5-vent line, 6-constant pressure current stabilizer, 7-gas flowmeter, 8-liquid outlet, 9-liquid outlet line, 10-mechanical natural gas water delivery valve, 11-liquid flowmeter, 12-slag discharge line, 601-piston cylinder, 602-counterweight piston, 603-rack, 604-intake pipe, 605-outlet pipe, 606-double-headed motor, 607-large driving gear A, 608-small driving gear A, 609-small driving gear B, 610-large driving gear B, 611-small driven gear A, 612-large driven gear A, 613-large driven gear B, 614-small driven gear B, 615-outer fluted disc, 616-inner gear, 617-strut, 618-cam, 619-spring, 1001-left cylinder, 1002-right cylinder, 1003-return line, 1004-water inlet, 1005-float ball, 1006-water outlet, 1007-valve seat, 1008-spool, 1009-lever mechanism, 1010-drain port.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1-5, the embodiment comprises a separator 1, a gas flowmeter 7 and a liquid flowmeter 11, wherein the separator 1 is of a horizontal structure, an inlet of the separator 1 is positioned at the upper part, an inlet end is provided with an inlet stop valve and a pressure gauge, the top of the separator 1 is provided with an exhaust port 4, the exhaust port 4 is connected with the gas flowmeter 7 through an exhaust pipeline 5, the exhaust pipeline 5 is connected with an exhaust stop valve in series, a liquid outlet 8 is arranged at the bottom of the separator 1, the liquid outlet 8 is connected with the liquid flowmeter 11 through a liquid outlet pipeline 9, and the liquid outlet pipeline 9 is connected with a liquid outlet stop valve in series.
The innovation point of the invention is that: the constant-pressure current stabilizer 6 is connected in series on the exhaust pipeline 5 between the exhaust cut-off valve and the gas flowmeter 7, and no matter whether the pressure or the flow speed of the air flow entering the constant-pressure current stabilizer 6 fluctuates, the constant speed can be formed after the air flow passes through the constant-pressure current stabilizer 6, so that the flow speed of the air flow passing through the gas flowmeter 7 is kept constant, and the measurement precision of the gas flowmeter 7 is ensured to be high.
The exhaust pipelines 5 at the upper and the lower stream of the constant pressure current stabilizer 6 are connected with pressure gauges in series.
The constant-pressure current stabilizer 6 comprises two piston cylinders 601, a balance weight piston 602 is arranged in each piston cylinder 601 in a sliding and sealing manner, a rack 603 is fixedly connected to the upper end of each balance weight piston 602, an air inlet pipe 604 and an air outlet pipe 605 are connected to the bottom of each piston cylinder 601, an air inlet check valve and an air inlet cut-off valve are connected to the air inlet pipe 604 in series, an air outlet check valve and an air outlet cut-off valve are connected to the air outlet pipe 605 in series, and the two racks 603 are driven by a driving mechanism; in the working process of the constant-pressure current stabilizer 6, firstly, the left side rack 603 in fig. 2 is driven to ascend, the counterweight piston 602 follows the ascending, so that natural gas is filled in a left side piston cavity, then the driving force of the left side rack 603 is withdrawn, at the moment, the gravity of the counterweight piston 602 is larger than the upward pressure exerted by the natural gas on the counterweight piston 602, so that the counterweight piston 602 naturally descends, and after the gravity and the pressure are balanced, the counterweight piston 602 stops sliding, and the gas pressure in the piston cylinder 601 at the moment is recorded as an X value; then, a reverse driving force is applied to the rack 603 to enable the rack 603 to descend, the descending speed of the rack 603 is uniform, so that the discharged natural gas flow is uniform, the air pressure generated by the flow speed is the same as the value X, in the process of uniformly exhausting the left piston cylinder 601, the right piston cylinder 601 rapidly sucks natural gas, the total time for sucking and completing sinking of the counterweight piston 602 is shorter than that of left exhaust, when the left piston cylinder 601 is exhausted at the end of the moment, the right piston cylinder 601 is exhausted, the exhaust speed is uniform, and the exhaust pressure is also the value X, so that uniform gas flows are continuously discharged through the two piston cylinders 601, the measurement error of the gas flowmeter 7 is reduced, and the measurement accuracy is improved.
As shown in fig. 4 and 5, the driving mechanism comprises a double-headed motor 606, a large driving gear a607, a small driving gear a608, a large driving gear B610, a small driving gear B609, a large driven gear a612, a small driven gear a611, a large driven gear B613 and a small driven gear B614, wherein the large driving gear a607 and the small driving gear a608 are coaxial and are fixedly connected with a shaft; the large driving gear B610 and the small driving gear B609 are coaxial and are fixedly connected with the shaft; the large driven gear A612 and the small driven gear A611 are coaxial and are fixedly connected with the shaft; the large driven gear B613 and the small driven gear B614 are coaxial and are fixedly connected with the shaft; the large driving gear A607 and the small driving gear A608 are positioned at one end of the shaft of the double-headed motor 606, the large driving gear B610 and the small driving gear B609 are positioned at the other end of the shaft of the double-headed motor 606, the large driven gear A612 is meshed with the small driving gear B609, the small driven gear A611 is meshed with the large driving gear A607, the large driven gear B613 is meshed with the small driving gear A608, and the small driven gear B614 is meshed with the large driving gear B610.
The large driving gear A607 and the large driving gear B610 respectively comprise an outer fluted disc 615 and an inner gear 616, the inner gear 616 rotates along with the shaft, the outer fluted disc 615 does not rotate along with the shaft, a one-way clutch mechanism is fixedly connected on the outer fluted disc 615 and comprises a supporting rod 617 and a cam 618, one end of the supporting rod 617 is hinged on the outer fluted disc 615, the other end of the supporting rod 617 abuts against the inner gear 616 so as to realize one-way clutch between the inner gear 616 and the outer fluted disc 615, a spring 619 is arranged between the supporting rod 617 and the outer fluted disc 615, and the supporting rod 617 has a trend of approaching to the inner gear 616 under the action of the elasticity of the spring 619; the pinion a611 and the pinion B614 are engaged with the two racks 603, respectively.
The working process of the driving mechanism for driving the two racks 603 is as follows:
the left side piston cylinder 601 inhales, and the right side piston cylinder 601 exhausts the air in the following process: firstly, the double-headed motor 606 is started, so that the double-headed motor 606 rotates anticlockwise, and the large driving gear A607 and the small driving gear A608 rotate anticlockwise along with the shaft, the small driven gear A611 and the large driven gear B613 which are respectively meshed with the large driving gear A607 and the small driving gear A608 rotate clockwise, the small driven gear A611 is meshed with the left rack 603, the left rack 603 moves upwards, and the left piston cylinder 601 sucks air; the large driven gear B613 and the small driven gear B614 are coaxial, so that the small driven gear B614 rotates clockwise, the small driven gear B614 is meshed with the right rack 603, the right rack 603 is driven to move downwards, the right piston cylinder 601 exhausts, the motor rotation speed is constant, the moving speeds of the two counterweight pistons 602 are constant, but the moving speeds of the two counterweight pistons 602 are different, as shown in fig. 3, it is obvious that the moving speed of the sucked counterweight pistons 602 is faster, the suction action is preferentially completed, the moving speed of the discharged counterweight pistons 602 is slower, the discharge action is completed after the suction of the sucked counterweight pistons 602 and the time for sinking to a balance state is smaller than the time for the discharge action, one side is guaranteed to be not exhausted, one side is ready for discharging, the continuity of discharging is guaranteed, and the constancy of the discharging airflow speed is guaranteed. After the aspirated counter weight piston 602 moves to the top, the cam 618 in the large driving gear a607 is rotated, the supporting rod 617 is pushed away, the tail end of the push rod is separated from the internal gear 616, the internal gear 616 rotates along with the shaft, the external gear disk 615 does not follow, the aspirated counter weight piston 602 stops ascending and naturally descends under the action of gravity until the gravity is balanced with the pressure in the aspirated piston, the aspirated piston is stationary, the exhaust piston reaches the lowest end, after the exhaust piston reaches the lowest end, the cam 618 is reset, the double-headed motor 606 immediately rotates reversely, the aspirated piston becomes the exhaust piston, the exhausted piston becomes the aspirated piston, and the like.
A mechanical natural gas water delivery valve 10 is connected in series on a liquid discharge pipeline 9 between a liquid discharge cut-off valve and a liquid flowmeter 11, the mechanical natural gas water delivery valve 10 comprises two cylinders with left and right structures, which are respectively called a left cylinder 1001 and a right cylinder 1002, the two cylinders are communicated, and the height of the right cylinder 1002 is lower than that of the left cylinder 1001; the top end of the left cylinder 1001 is connected with an air return pipeline 1003, and when the liquid level in the left cylinder 1001 is higher than the height of the connecting pipe, a water seal is formed, so that natural gas entering the left cylinder 1001 cannot enter the right cylinder 1002, and cannot be discharged through the water outlet 1006. The upper part of the left cylinder 1001 is provided with a water inlet 1004, the air return pipeline 1003 is communicated with an exhaust pipeline 5 at the upstream of the exhaust cut-off valve, and a small amount of natural gas which contains oil is inevitably introduced into water in the left cylinder 1001, and the natural gas is naturally separated because the gas density is different from the liquid density, the natural gas is positioned at the upper layer, the water is positioned at the lower layer, the sediment is positioned at the bottom, and the natural gas at the upper layer is converged into the exhaust pipeline 5 through the air return pipeline 1003, so that the accuracy of gas yield measurement is further improved.
A floating ball 1005 is arranged on the inner side of the left cylinder 1001; the lower part of the right cylinder body 1002 is provided with a water outlet 1006, the inner side of the right cylinder body 1002 is provided with a valve communicated with the water outlet 1006, the valve comprises a valve seat 1007, a valve core 1008 and a lever mechanism 1009, the valve core 1008 is inserted in the valve seat 1007 in a sealing way, the bottom of the valve seat 1007 is provided with a side hole communicated with the water outlet 1006, the valve core 1008 is provided with an axial blind hole and a radial through hole, the axial blind hole and the radial through hole are communicated to form a water outlet channel, the upper end of the valve core 1008 is connected with the lever mechanism 1009, and the other end of the lever mechanism 1009 is connected with the lower end of a floating ball 1005; drain ports 1010 are formed at the lower ends of the left cylinder 1001 and the right cylinder 1002, respectively. The mechanical natural gas water delivery valve 10 realizes 'water closing by valve and gas blocking by water' by utilizing the density difference of the medium and the lever principle, and reaches the zero leakage amount of natural gas. The transverse drainage structure for the drain valve enables the medium to be in a U-shaped trend in the valve body, can effectively prevent natural gas leakage and automatically deposit slag, and is low in installation height and small in size.
When the mechanical natural gas water delivery valve 10 operates, a 2/3 high-level water seal is arranged in the left cylinder 1001, when the water level is higher than 2/3, the floating ball 1005 floats upwards enough to pull the lever mechanism 1009 to pull the valve core 1008, so that a water outlet channel is opened for water discharge, when the water discharge is lowered to 2/3 of the height, the floating ball 1005 descends, the valve core 1008 descends, and the water outlet channel is closed. The nature of the mechanical natural gas water transfer valve 10 is active closed and passive open. Meanwhile, the left-right structure divides the valve body into the left separator 1, so that the gas, liquid and slag can be effectively separated into enough space, and the natural gas can be ensured to leak zero in the right drainage cavity.
The top end of the separator 1 is connected with a safety pipeline 2 and a vent pipeline 3, the safety pipeline 3 is connected with a safety valve and a safety valve cut-off valve in series, the safety valve is opened when the separator is used normally, and the safety valve is opened when the pressure in the separator 1 exceeds a set value, so that the high-pressure danger in the separator 1 is avoided.
The low end of the separator 1 is connected with a slag discharging pipeline 12, the slag discharging pipeline 12 is connected with a slag discharging cut-off valve in series, and after the use is finished, the slag discharging cut-off valve is opened to discharge the residual in the separator 1.
The separator 1 is internally provided with a high-level liquid level meter and a low-level liquid level meter, after the liquid level reaches the upper limit, liquid and sediment are discharged through the liquid outlet 8, and when the liquid level is reduced to the lower limit, the liquid outlet 8 is automatically closed. Therefore, the bottom of the separator 1 is always provided with liquid, the liquid seal is used for blocking gas by liquid, and the separated gas phase is completely discharged through the gas outlet, so that the invention can be used for online metering.
The bidirectional separation metering device also comprises a solar power supply system, and the solar power supply system supplies power for the bidirectional separation metering device.
The invention is designed for skid-mounted design, integrates all functions, has stable structure and can bear various road conditions and on-site installation conditions.
The invention adopts a wireless transmission system, and can wirelessly transmit various instrument data on site to a user control room or a terminal. The parameters required by users such as wellhead pressure, medium temperature, liquid level of the separator 1, gas instantaneous flow, gas accumulated flow, liquid instantaneous flow, liquid accumulated flow, equipment inlet-outlet pressure difference and pressure can be read. The control mode of the wireless transmission system is a common technical means for a person skilled in the field of automatic control, and is not the content claimed by the invention, and the detailed description is not expanded again.
Claims (2)
1. The utility model provides a two-way separation metering device, includes separator (1), gas flowmeter (7) and liquid flowmeter (11), separator (1) be horizontal structure, separator (1) import is located upper portion, import end installs import stop valve and manometer, separator (1) top is provided with gas vent (4), connect through exhaust pipeline (5) between gas vent (4) and gas flowmeter (7), exhaust pipeline (5) are last to have concatenated the exhaust stop valve, separator (1) bottom is provided with leakage fluid dram (8), be connected through leakage fluid pipeline (9) between leakage fluid dram (8) and the liquid flowmeter (11), have concatenated the leakage fluid stop valve on leakage fluid pipeline (9); the method is characterized in that: the constant-pressure flow stabilizer (6) is connected in series on an exhaust pipeline (5) between the exhaust cut-off valve and the gas flowmeter (7), the pressure gauges are connected in series on the exhaust pipeline (5) at the upper and the lower stream of the constant-pressure flow stabilizer (6), the constant-pressure flow stabilizer (6) comprises two piston cylinders (601), a counterweight piston (602) is arranged in each piston cylinder (601) in a sliding sealing manner, a rack (603) is fixedly connected to the upper end of each counterweight piston (602), an air inlet pipe (604) and an air outlet pipe (605) are connected to the bottom of each piston cylinder (601), an air inlet check valve and an air inlet cut-off valve are connected in series on each air inlet pipe (604), an air outlet check valve and an air outlet cut-off valve are connected in series on each air outlet pipe (605), and the two racks (603) are driven by a driving mechanism;
the driving mechanism comprises a double-headed motor (606), a large driving gear A (607), a small driving gear A (608), a large driving gear B (610), a small driving gear B (609), a large driven gear A (612), a small driven gear A (611), a large driven gear B (613) and a small driven gear B (614), wherein the large driving gear A (607) and the small driving gear A (608) are coaxial and are fixedly connected with a shaft; the large driving gear B (610) and the small driving gear B (609) are coaxial and fixedly connected with the shaft; the large driven gear A (612) and the small driven gear A (611) are coaxial and are fixedly connected with the shaft; the large driven gear B (613) and the small driven gear B (614) are coaxial and fixedly connected with the shaft; the large driving gear A (607) and the small driving gear A (608) are positioned at one end of the shaft of the double-headed motor (606), the large driving gear B (610) and the small driving gear B (609) are positioned at the other end of the shaft of the double-headed motor (606), the large driven gear A (612) is meshed with the small driving gear B (609), the small driven gear A (611) is meshed with the large driving gear A (607), the large driven gear B (613) is meshed with the small driving gear A (608), and the small driven gear B (614) is meshed with the large driving gear B (610);
the large driving gear A (607) and the large driving gear B (610) respectively comprise an outer fluted disc (615) and an inner gear (616), the inner gear (616) rotates along with the shaft, the outer fluted disc (615) does not rotate along with the shaft, a one-way clutch mechanism is fixedly connected on the outer fluted disc (615), the one-way clutch mechanism comprises a supporting rod (617) and a cam (618), one end of the supporting rod (617) is hinged on the outer fluted disc (615), the other end of the supporting rod (617) is propped against the inner gear (616) so as to realize one-way clutch between the inner gear (616) and the outer fluted disc (615), a spring (619) is arranged between the supporting rod (617) and the outer fluted disc (615), and the supporting rod (617) has a trend of approaching to the inner gear (616) under the action of the elasticity of the spring (619); the small driven gear A (611) and the small driven gear B (614) are respectively meshed with the two racks (603);
a mechanical natural gas water delivery valve (10) is connected in series on a liquid discharge pipeline (9) between the liquid discharge cut-off valve and the liquid flowmeter, the mechanical natural gas water delivery valve (10) comprises two cylinders with left and right structures, which are respectively called a left cylinder (1001) and a right cylinder (1002), the two cylinders are communicated, and the height of the right cylinder (1002) is lower than that of the left cylinder (1001); the top end of the left cylinder body is connected with an air return pipeline (1003), the air return pipeline (1003) is communicated with an exhaust pipeline (5) at the upstream of an exhaust cut-off valve, a water inlet (1004) is formed in the upper part of the left cylinder body (1001), and a floating ball (1005) is arranged at the inner side of the left cylinder body (1001); the water outlet (1006) is formed in the lower portion of the right cylinder body (1002), a valve communicated with the water outlet (1006) is arranged on the inner side of the right cylinder body (1002), the valve comprises a valve seat (1007), a valve core (1008) and a lever mechanism (1009), the valve core (1008) is inserted in the valve seat (1007) in a sealing mode, a side hole communicated with the water outlet (1006) is formed in the bottom of the valve seat (1007), an axial blind hole and a radial through hole are formed in the valve core (1008), the axial blind hole and the radial through hole are communicated to form a water outlet channel, the upper end of the valve core (1008) is connected with the lever mechanism (1009), and the other end of the lever mechanism (1009) is connected with the lower end of the floating ball (1005); the lower ends of the left cylinder body (1001) and the right cylinder body (1002) are respectively provided with a drain outlet (1010);
the top end of the separator (1) is connected with a safety pipeline (2) and a vent pipeline (3), and the safety pipeline (2) is connected with a safety valve and a safety valve cut-off valve in series; the lower end of the separator (1) is connected with a slag discharging pipeline (12), and the slag discharging pipeline (12) is connected with a slag discharging cut-off valve in series; a high-level liquid level meter and a low-level liquid level meter are arranged in the separator (1).
2. The bi-directional separation metering device of claim 1, wherein: the bidirectional separation metering device also comprises a solar power supply system, and the solar power supply system supplies power for the bidirectional separation metering device.
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| CN202010965760.1A CN111998224B (en) | 2020-09-15 | 2020-09-15 | Bidirectional separation metering device |
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| CN202010965760.1A CN111998224B (en) | 2020-09-15 | 2020-09-15 | Bidirectional separation metering device |
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| CN113280263B (en) * | 2021-02-08 | 2022-11-25 | 深圳市赛力自动化仪表有限公司 | Flow-adjustable metering type continuous conveying device |
| CN114151042A (en) * | 2021-12-31 | 2022-03-08 | 四川华宇石油钻采装备有限公司 | Isolated independent sand discharge and drainage natural gas desanding system |
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| CN111998224A (en) | 2020-11-27 |
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