CN111998224A - Bidirectional separation metering device - Google Patents
Bidirectional separation metering device Download PDFInfo
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- CN111998224A CN111998224A CN202010965760.1A CN202010965760A CN111998224A CN 111998224 A CN111998224 A CN 111998224A CN 202010965760 A CN202010965760 A CN 202010965760A CN 111998224 A CN111998224 A CN 111998224A
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- separator
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- 238000000926 separation method Methods 0.000 title claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 239000007789 gas Substances 0.000 claims abstract description 56
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003345 natural gas Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- 239000002893 slag Substances 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000008676 import Effects 0.000 abstract description 3
- 239000002343 natural gas well Substances 0.000 abstract description 2
- 238000005213 imbibition Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 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
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
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- 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 exhaust pipe between gas vent and the gas flowmeter, and the separator bottom is provided with the leakage fluid dram, is connected through fluid-discharge tube between leakage fluid dram and the liquid flowmeter, has concatenated constant voltage current stabilizer on the exhaust pipe way between gas vent to the gas flowmeter, has concatenated mechanical type natural gas water delivery valve on the fluid-discharge tube way between leakage fluid dram to the liquid flowmeter, constant voltage current stabilizer include two piston cylinders, thereby two piston cylinders drive another at the uniform velocity flowing back of imbibition through actuating mechanism, 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 gas well single well yield measurement is one of important technical problems in the field of natural gas production, and production data such as gas production rate, liquid production amount and the like are basic data for monitoring formation water output, optimizing gas field production allocation and ensuring reasonable exploitation of a gas reservoir, and are important bases for developing geological analysis and making production decisions. In the prior art, a single-well separation metering device exists, and a separator is adopted to separate phases and then independently meter the phases. Problems still exist with this measurement: (1) the pressure intensity of the mixed medium extracted from the wellhead is unstable, and the separator does not have a pressure stabilizing function, so that the flow rate of the gas phase 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 metered online.
Disclosure of Invention
In order to solve the problem of inaccurate gas phase metering caused by fluctuation of gas flow passing through a gas flowmeter in the background art, the invention provides a bidirectional separation metering device for measuring gas flow at constant pressure and constant speed, and the bidirectional separation metering device has the characteristic of xx.
The technical scheme provided by the invention is as follows: a 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 blocking valve and a pressure gauge are installed at an inlet end, 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 blocking valve in series, a liquid discharge port is arranged at the bottom of the separator, the liquid discharge port is connected with the liquid flowmeter through a liquid discharge pipeline, and the liquid discharge pipeline is connected with a liquid discharge blocking valve in series; the constant-pressure flow stabilizer is connected in series with an exhaust pipe between the exhaust stop valve and the gas flowmeter, a pressure gauge is connected in series with the exhaust pipe at the upper and lower positions of the constant-pressure flow stabilizer, the constant-pressure flow stabilizer comprises two piston cylinders, a balance weight piston is arranged in each piston cylinder in a sliding sealing manner, a rack is fixedly connected to the upper end of the balance weight piston, the bottom of each piston cylinder is connected with an air inlet pipe and an air outlet pipe, an air inlet check valve and an air inlet stop valve are connected to the air inlet pipe in series, an air outlet check valve and an air outlet stop valve are connected to the air outlet pipe in series, and the;
the driving mechanism comprises a double-head 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 the 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 a 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 a shaft, the outer fluted disc does not rotate along with the shaft, a one-way clutch mechanism is fixedly connected onto the outer fluted disc, the one-way clutch mechanism comprises a supporting rod and a cam, one end of the supporting rod is hinged onto the outer fluted disc, the other end of the supporting rod abuts against the inner gear so as to realize one-way clutch of 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 tendency of being close to the inner gear under the; 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 cylinder bodies of a left structure and a right structure, the two cylinder bodies are respectively called a left cylinder body and a right cylinder body, the two cylinder bodies are communicated, and the height of the right cylinder body is lower than that of the left cylinder body; 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 an 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 lower part of the right cylinder body is provided with a water outlet, the inner side of the right cylinder body is provided with a valve communicated with the water outlet, the valve comprises a valve seat, a valve core and a lever mechanism, the valve core is hermetically inserted in the valve seat, the bottom of the valve seat is provided with a side hole communicated with the water outlet, the valve core 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 is connected with the lever mechanism, and the other end of the lever mechanism is connected with the; 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 block valve in series; the lower end of the separator is connected with a slag discharge pipeline which is connected with a slag discharge cut-off valve in series; a high level liquid level meter and a low level liquid level meter are arranged in the separator.
The bidirectional separation metering device further comprises a solar power supply system, and the solar power supply system supplies power to the bidirectional separation metering device.
The invention has the beneficial effects that:
(1) the constant-pressure current stabilizer is connected between the gas outlet of the separator and the gas flowmeter in series, so that the flow velocity of the gas flow passing through the gas flowmeter is kept constant, and the high measurement precision of the gas flowmeter is ensured.
(2) The separator is internally provided with an upper liquid level meter and a lower liquid level meter, liquid and sediments are discharged through the liquid outlet after the liquid level reaches the upper limit, and the liquid outlet is automatically closed when the liquid level drops to the lower limit. Therefore, liquid is always stored at the bottom of the separator, and the liquid seal is provided with liquid gas barrier, so that the separated gas phase is completely discharged through the gas outlet, and the online metering can be realized.
(3) In the invention, liquid and sediments discharged from the liquid discharge port pass through the mechanical natural gas water delivery valve, and the mechanical natural gas water delivery valve has the function of separating gas and liquid again, so that the gas phase and the liquid phase are fully ensured to perform separate metering, and the metering accuracy is further improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a schematic structural diagram of the constant voltage current regulator of the present invention.
Fig. 3 is a schematic view of the structure of the driving mechanism of the present invention.
Fig. 4 is a schematic structural view of a large drive gear in the present invention.
Fig. 5 is a schematic structural diagram of the mechanical natural gas water delivery valve of the present invention.
In the figure: 1-a separator, 2-a safety pipeline, 3-an emptying pipeline, 4-an exhaust port, 5-an exhaust pipeline, 6-a constant pressure flow stabilizer, 7-a gas flowmeter, 8-a liquid outlet, 9-a liquid discharging pipeline, 10-a mechanical natural gas water conveying valve, 11-a liquid flowmeter, 12-a slag discharging pipeline, 601-a piston cylinder, 602-a counterweight piston, 603-a rack, 604-an air inlet pipe, 605-an air outlet pipe, 606-a double-head motor, 607-a large driving gear A, 608-a small driving gear A, 609-a small driving gear B, 610-a large driving gear B, 611-a small driven gear A, 612-a large driven gear A, 613-a large driven gear B, 614-a small driven gear B, 615-an external fluted disc, 616-internal gear, 617-strut, 618-cam, 619-spring, 1001-left cylinder, 1002-right cylinder, 1003-return gas pipeline, 1004-water inlet, 1005-floating ball, 1006-water outlet, 1007-valve seat, 1008-valve core, 1009-lever mechanism and 1010-sewage outlet.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1-5, this embodiment includes separator 1, gas flowmeter 7 and liquid flowmeter 11, separator 1 be horizontal structure, the import of separator 1 is located the upper portion, and import shut-off valve and manometer are installed to the entrance point, and separator 1 top is provided with gas vent 4, is connected through exhaust pipe 5 between gas vent 4 and the gas flowmeter 7, has concatenated exhaust shut-off valve on the exhaust pipe 5, and separator 1 bottom is provided with leakage fluid dram 8, is connected through drainage pipe 9 between leakage fluid dram 8 and the liquid flowmeter 11, has concatenated drainage shut-off valve on the leakage fluid dram 9.
The innovation points of the invention are as follows: the constant-pressure current stabilizer 6 is connected in series on the exhaust pipeline 5 between the exhaust cutoff valve and the gas flowmeter 7, and no matter whether pressure or flow velocity fluctuation exists in the airflow entering the constant-pressure current stabilizer 6, a constant velocity can be formed after the airflow passes through the constant-pressure current stabilizer 6, so that the flow velocity of the airflow passing through the gas flowmeter 7 is kept constant, and the high measurement precision of the gas flowmeter 7 is ensured.
The exhaust pipelines 5 at the upper and lower reaches of the constant pressure current stabilizer 6 are connected with pressure gauges in series.
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 the counterweight piston 602, the bottom of the piston cylinder 601 is connected with an air inlet pipe 604 and an air outlet pipe 605, the air inlet pipe 604 is connected with an air inlet check valve and an air inlet cut-off valve in series, the air outlet pipe 605 is connected with an air outlet check valve and an air outlet cut-off valve 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 rack 603 in fig. 2 is driven to move upwards, the counterweight piston 602 moves upwards along with the rack, so that the left piston cavity is filled with natural gas, then the driving force of the left rack 603 is cancelled, at the moment, the gravity of the counterweight piston 602 is greater than the upward pressure applied by the natural gas to the counterweight piston, so that the counterweight piston 602 naturally moves downwards, and after the gravity and the pressure are balanced, the counterweight piston 602 stops sliding, and the air 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 constant, so that the discharged natural gas flow is constant-speed flow, the air pressure generated by the flow is the same as the value X, in the process of constant-speed exhaust of the piston cylinder 601 on the left side, the piston cylinder 601 on the right side quickly sucks natural gas, the total time for sucking and finishing sinking of the counterweight piston 602 is shorter than that for the exhaust on the left side, when the exhaust of the piston cylinder 601 on the left side is finished, the piston cylinder 601 on the right side exhausts the gas, the exhaust speed is constant, and the exhaust pressure is also the value X, so that the constant-speed flow is discharged uninterruptedly through the two piston cylinders 601, the.
As shown in fig. 4 and 5, the driving mechanism includes 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 fixedly connected with the 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 double-head motor 606 shaft, the large driving gear B610 and the small driving gear B609 are positioned at the other end of the double-head motor 606 shaft, 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 a shaft, the outer fluted disc 615 does not rotate along with the shaft, a one-way clutch mechanism is fixedly connected to 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 to the outer fluted disc 615, the other end of the supporting rod 617 abuts against the inner gear 616 so as to realize the one-way clutch of 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 tendency of approaching the inner gear 616 under the action; the small driven gear a611 and the small driven gear B614 are respectively engaged with the two racks 603.
The working process of the driving mechanism for driving the two racks 603 is as follows:
the left side piston cylinder 601 is inhaled, and the process of right side piston cylinder 601 exhaust is: firstly, starting the double-head motor 606 to enable the double-head motor 606 to rotate anticlockwise, so that the large driving gear A607 and the small driving gear A608 both 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 side rack 603, so that the left side rack 603 moves upwards, and the left side piston cylinder 601 sucks air; the large driven gear B613 is coaxial with the small driven gear B614, 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 descend, the right piston cylinder 601 exhausts, the motor 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, obviously, the moving speed of the air-sucking counterweight piston 602 is higher, so that the air-sucking action is completed preferentially, the moving speed of the air-exhausting counterweight piston 602 is lower, so that the air-exhausting action is completed later, the time taken for the air-sucking counterweight piston 602 to suck air and sink to a balanced state is smaller than that of the air-exhausting action, so that the air-exhausting on one side is not completed, the air-exhausting preparation is already made, the continuity of the air. After the sucked counterweight piston 602 moves to the top, the cam 618 in the large driving gear A607 rotates to push the supporting rod 617 open, so that 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 toothed disc 615 does not follow, the sucked counterweight piston 602 stops ascending and naturally descends under the action of gravity until the gravity is balanced with the pressure in the suction piston, the suction piston is static, the exhaust piston reaches the lowest end, the cam 618 resets after the exhaust piston reaches the lowest end, the double-end motor 606 immediately rotates in the reverse direction, the suction piston becomes the exhaust piston, the piston which finishes exhaust becomes the suction 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 cylinder bodies of a left structure and a right structure, the two cylinder bodies are respectively called as a left cylinder body 1001 and a right cylinder body 1002, the two cylinder bodies are communicated, and the height of the right cylinder body 1002 is lower than that of the left cylinder body 1001; the top of left side cylinder body 1001 is connected with return air pipe way 1003, and when the liquid level in the left side cylinder body 1001 was higher than the connecting pipe height, formed the water seal, made the natural gas that gets into left side cylinder body 1001 can not enter into right side cylinder body 1002 to can not discharge through delivery port 1006. The water inlet 1004 is opened on the upper portion of the left cylinder 1001, the air return pipeline 1003 is communicated with the exhaust pipeline 5 on the upstream of the exhaust cutoff valve, natural gas which contains a small amount of oil and is difficult to avoid enters water in the left cylinder 1001 is naturally separated due to the fact that the gas density and the liquid density are different in weight, the natural gas is located on the upper layer and is located on the lower layer, sediment is located at the bottom, and the natural gas on the upper layer is converged into the exhaust pipeline 5 through the air return pipeline 1003, so that the accuracy of gas production amount metering is further improved.
A floating ball 1005 is arranged on the inner side of the left cylinder body 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 hermetically inserted into the valve seat 1007, 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; the lower ends of the left cylinder 1001 and the right cylinder 1002 are respectively provided with a sewage outlet 1010. The mechanical natural gas water delivery valve 10 realizes that the leakage amount of the natural gas reaches zero by closing water by the valve and blocking gas by water by using a medium density difference and a lever principle. The horizontal drainage structure for the drainage valve enables the medium to be in a U shape in the valve body, natural gas leakage can be effectively prevented, automatic slag settling can be realized, the installation height is low, and the volume is small.
When the mechanical natural gas water delivery valve 10 operates, a high-level water seal of 2/3 is arranged in the left cylinder body 1001, when the water level is higher than 2/3, the floating ball 1005 floats upwards to pull the lever mechanism 1009 to pull the valve core 1008, so that the water outlet channel is opened for water drainage, and when the water is drained to the height of 2/3, 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 delivery valve 10 is to actively close and passively open. Meanwhile, the left and right structures divide the valve body into a left separator 1, so that sufficient separation space can be effectively reserved for gas, liquid and slag, and a right drainage cavity can ensure zero leakage of natural gas.
The top end of the separator 1 is connected with a safety pipeline 2 and an emptying pipeline 3, the safety pipeline 3 is connected with a safety valve and a safety valve cut-off valve in series, the safety valve cut-off valve is opened during normal use, and when the pressure in the separator 1 exceeds a set value, the safety valve is opened, so that high-pressure danger in the separator 1 is avoided.
The lower end of the separator 1 is connected with a slag discharge pipeline 12, the slag discharge pipeline 12 is connected with a slag discharge cut-off valve in series, and after the separator is used, the slag discharge cut-off valve is opened to completely discharge the residue in the separator 1.
A high-level liquid level meter and a low-level liquid level meter are installed in the separator 1, liquid and sediments are discharged through the liquid outlet 8 after the liquid level reaches the upper limit, and the liquid outlet 8 is automatically closed when the liquid level drops to the lower limit. Therefore, liquid is always stored at the bottom of the separator 1, and the liquid seal is provided with liquid gas barrier, so that the separated gas phase is completely discharged through the gas outlet, and the online metering can be realized.
The bidirectional separation metering device further comprises a solar power supply system, and the solar power supply system supplies power to the bidirectional separation metering device.
The invention is integrally designed in a skid-mounted manner, integrates all functions, has stable structure and can bear various road conditions and field installation conditions.
The invention adopts a wireless transmission system, and can wirelessly transmit various field instrument data 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 and outlet pressure difference, pressure and the like, can be read. The control mode of the wireless transmission system is a common technical means of technicians in the field of automation control, is not the content claimed by the invention, and is not repeated again.
Claims (2)
1. A bidirectional separation metering device 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 cutoff valve and a pressure gauge are installed at an inlet end, an exhaust port (4) is formed in the top of the separator (1), the exhaust port (4) is connected with the gas flowmeter (7) through an exhaust pipeline (5), the exhaust cutoff valve is connected to the exhaust pipeline (5) in series, a liquid discharge port (8) is formed in the bottom of the separator (1), the liquid discharge port (8) is connected with the liquid flowmeter (11) through a liquid discharge pipeline (9), and the liquid discharge cutoff valve is connected to the liquid discharge pipeline (9) in series; the method is characterized in that: the constant-pressure flow stabilizer (6) is connected in series on an exhaust pipeline (5) between an exhaust cut-off valve and a gas flowmeter (7), a pressure gauge is connected in series on the exhaust pipeline (5) at the upper and lower reaches 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 at the upper end of the counterweight piston (602), an air inlet pipe (604) and an air outlet pipe (605) are connected at the bottom of each piston cylinder (601), an air inlet check valve and an air inlet cut-off valve are connected in series on the air inlet pipe (604), an air outlet check valve and an air outlet cut-off valve are connected in series on the air outlet pipe (605), and the two racks (603;
the driving mechanism comprises a double-head 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 are 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 are 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-head 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-head 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 toothed disc (615) and an inner gear (616), the inner gear (616) rotates along with a shaft, the outer toothed disc (615) does not rotate along with the shaft, a one-way clutch mechanism is fixedly connected to the outer toothed 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 to the outer toothed disc (615), the other end of the supporting rod (617) abuts against the inner gear (616) so as to realize one-way clutch of the inner gear (616) and the outer toothed disc (615), a spring (619) is arranged between the supporting rod (617) and the outer toothed disc (615), and the supporting rod (617) has a tendency of approaching to the inner gear (616) under the elastic force action of the spring (; 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 cylinder bodies of a left structure and a right structure, the two cylinder bodies are respectively called a left cylinder body (1001) and a right cylinder body (1002), the two cylinder bodies are communicated, and the height of the right cylinder body (1002) is lower than that of the left cylinder body (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) on the upstream of an exhaust cut-off valve, the upper part of the left cylinder body (1001) is provided with a water inlet (1004), and the inner side of the left cylinder body (1001) is provided with a floating ball (1005); 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 hermetically inserted in the valve seat (1007), 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 is communicated with the radial through hole 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 (; the lower ends of the left cylinder body (1001) and the right cylinder body (1002) are respectively provided with a sewage outlet (1010);
the top end of the separator (1) is connected with a safety pipeline (2) and an emptying pipeline (3), and the safety pipeline (2) is connected with a safety valve and a safety valve block valve in series; the lower end of the separator (1) is connected with a slag discharge pipeline (12), and a slag discharge cut-off valve is connected on the slag discharge pipeline (12) in series; a high level liquid level meter and a low level liquid level meter are arranged in the separator (1).
2. The two-way separation metering device of claim 1, wherein: the bidirectional separation metering device further comprises a solar power supply system, and the solar power supply system supplies power to 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113280263A (en) * | 2021-02-08 | 2021-08-20 | 深圳市赛力自动化仪表有限公司 | Flow-adjustable metering type continuous conveying device |
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|---|---|
| CN111998224B (en) | 2024-04-09 |
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