Single well crude oil transfer metering device

Abstract

The application discloses a single-well crude oil transmission metering device, which comprises an outer protective tank body, a filter assembly located in the outer protective tank body and a driving mechanism for driving the filter assembly; the outer protective tank body is internally provided with a containing cavity and the filter assembly; the filter assembly comprises an inner support body and spiral blades; the spiral blades are arranged along the shape of the inner support body; a plurality of uniformly distributed liquid leakage holes are formed in the inner support body; and the liquid leakage holes are provided with filter cores; the fluid flowing out of the liquid leakage holes flows along the outer surface of the umbrella-shaped air diffusing assembly under the action of gravity; the fluid is spread by the umbrella-shaped air diffusing assembly; the gas in the fluid is more easily and quickly diffused; the wall-hanging phenomenon is avoided; the impurities in the filtered oil are removed during the conveying of the crude oil; then, the oil is metered, the metering precision is improved, the structure is simple, the maintenance is simple and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of petroleum metering equipment, and particularly relates to a single-well crude oil transmission metering device. BACKGROUND

[0002] At present, one difficult problem in the oil field crude oil exploitation is online metering of the exploited crude oil. The main reason is that the composition of the crude oil is very complex, the crude oil contains oil, water, gas and other impurities, and is a multiphase complex fluid, and the single-well crude oil is intermittent flow, so the general flow meter cannot meet the requirements.

[0003] The existing single-well crude oil transmission metering device commonly uses three-phase separation method to separate three phases, and then meters the oil, water and gas three phases respectively. Most companies separate the gas and liquid two phases based on this principle, meter the gas and liquid two phases respectively, and further calculate the oil and water production by combining with a water content analyzer. This kind of result is relatively simple and low in cost, but lacks consideration of impurities in the crude oil. In order to overcome the inaccuracy caused by the impurities in the crude oil, various sensors and meters need to be added in the metering device, a control system needs to be connected, and some algorithms are needed to calculate the data, and finally the structure is obtained. This results in the need to arrange more precise instruments inside the metering device, high production requirements, and the need for professional personnel to maintain electronic components, which also increases the maintenance cost.

[0004] In addition, in order to solve the problem that the crude oil condenses and hangs on the wall in winter and does not flow smoothly in the low temperature state, the existing technology adopts the method of heating the crude oil. The heat of the heating unit is basically from heating wires or heating pipes. The heating wires or heating pipes need to be uniformly installed in the pipeline. First, it is not easy to install the heating unit in the pipeline. In order to improve the heat conduction efficiency and avoid safety hazards, the heating unit is designed in the pipeline interlayer, so the installation cost and manufacturing cost are also increased. If the heating wire fails, disassembly and maintenance are also a problem. When the pipelines are connected, the safety connection and use of the line also need to be ensured, which also poses more challenges. Therefore, only the heating function is realized, the pipeline structure is complex, and it is not cost-effective.

[0005] In addition, steam heating is also used. The heating equipment is not installed in the metering device, and the structure is relatively simple. However, the heating cost is higher, a special steam flow channel needs to be installed outside the metering device to provide steam flow to heat the metering device, and a steam outlet is also needed, which results in a complex structure. Finally, a large amount of liquid is needed to provide steam, and the steam evaporation structure needs to be operated at high power, which consumes more electricity.

[0006] Therefore, an improved technology is urgently needed. SUMMARY

[0007] In view of the deficiencies of the prior art, the present application aims to provide a single-well crude oil transmission metering device.

[0008] To achieve the aforementioned application purposes, the present application employs the technical scheme comprising: a single-well crude oil transmission metering device, comprising: an outer protective tank body, a filter assembly located in the outer protective tank body, a driving mechanism for driving the filter assembly, a liquid inlet pipe, a material discharge pipe, an exhaust pipe, an umbrella-shaped air diffusing assembly, and a heating assembly.

[0009] The outer protective tank body has a containing cavity with a conical upper end and a cylindrical lower end, the center of the conical upper end coincides with the center of the cylindrical lower end, and the overall shape of the outer protective tank body is also conical at the upper end and cylindrical at the lower end; the top end of the outer protective tank body is flat to facilitate the installation of an outer pipe; and the bottom of the outer protective tank body has supporting legs to support the outer protective tank body and thus the product.

[0010] The filter assembly comprises an inner support body with an opening facing downward and a shape adapted to the shape of the containing cavity; the inner support body is hollow inside; the center of the inner support body coincides with the center of the containing cavity; the bottom of the inner support body is sealingly and rotatably connected to the outer protective tank body; the outer part of the bottom of the inner support body has a conveying space with the outer protective tank body; the outer surface of the inner support body and in the conveying space is provided with helical blades arranged along the shape of the inner support body; and a plurality of evenly distributed liquid leakage holes are formed in the inner support body, and each of the liquid leakage holes has a filter core.

[0011] The driving mechanism is in transmission connection with the filter assembly to drive the filter assembly to rotate; the helical blades convey the crude oil to the upper end; the oil and gas fall into the outer protective tank body through the liquid leakage holes; and the impurities are conveyed to the upper end by the helical blades.

[0012] The liquid inlet pipe conveys the crude oil to the conveying space; one end of the liquid inlet pipe is in communication with the bottom of the conveying space to supply oil from the bottom, which is then lifted by the helical blades.

[0013] One end of the material discharge pipe is in communication with the top of the conveying space to discharge the impurities conveyed to the upper end by the helical blades of the filter assembly.

[0014] The exhaust pipe discharges the gas in the containing cavity and the filter assembly; the exhaust pipe comprises an outer pipe and an inner pipe; the outer pipe is located outside the outer protective tank body, and the inner pipe is located in the filter assembly; the outer pipe and the inner pipe are connected by a rotary joint; the outer pipe is fixed to the outer protective tank body; the inner pipe is uniformly provided with a plurality of gas inlet holes; the gas in the outer protective tank body enters the inner pipe through the gas inlet holes and is then discharged by the outer pipe; a gas flow meter is installed on the outer pipe; after the crude oil in the containing cavity passes through the filter assembly, the gas in the crude oil goes up; therefore, after the crude oil enters the outer protective tank body, the gas is discharged through the exhaust pipe; and the flow meter on the exhaust pipe can directly measure the gas.

[0015] The fluid flowing out of the leakage hole falls into the umbrella-shaped air dispersing assembly under the action of gravity, and the fluid flows along the outer surface of the umbrella-shaped air dispersing assembly, the fluid is spread by the umbrella-shaped air dispersing assembly, and the gas in the fluid is more easily and quickly dispersed, a plurality of supporting legs are arranged at the bottom of the umbrella-shaped air dispersing assembly, and the lower ends of the supporting legs are fixed in the outer protective tank body, and the supporting legs fix and support the umbrella-shaped air dispersing assembly.

[0016] The heating assembly umbrella-shaped air dispersing assembly provides heat, increases the heat of the umbrella-shaped air dispersing assembly, and further heats the fluid in contact with the umbrella-shaped air dispersing assembly, enhances the flow force of the crude oil, and the gas is more easily dispersed.

[0017] The bottom of the filtering assembly and the bottom surface of the containing cavity are apart by a distance, which is used for storing filtered liquid, the bottom of the outer protective tank body has a partition, the partition divides the space at the bottom of the outer protective pipe into a liquid storage chamber and an oil storage chamber, an oil flow passage is formed in the upper end of the partition, a flow guide plate is arranged in the outer protective tank body and below the filtering assembly, the flow guide plate is used for guiding the liquid flowing out of the leakage hole and the umbrella-shaped air dispersing assembly into the liquid storage chamber, the liquid storage chamber and the oil storage chamber are respectively connected with a water drain pipe and an oil drain pipe, a water flow meter is mounted on the water drain pipe in a matched mode, and an oil flow meter is mounted on the oil drain pipe in a matched mode, the water and oil in which the gas is fully dispersed enter the liquid storage chamber, as the liquid level rises, the oil floats at the upper end, when the oil rises to the oil flow passage, the oil enters the oil storage chamber, finally, the water is discharged through the water drain pipe while being metered, the oil is discharged from the oil drain pipe while being metered, and relatively accurate data and relatively clean fluid are obtained.

[0018] In the application, the driving mechanism drives the filtering assembly to filter the liquid, heat generated by direct friction between the spiral blade and the outer protective tank body is used to heat the crude oil and promote the flow of the crude oil, and the wall sticking phenomenon is avoided, the impurities in the oil are filtered by the spiral blade during the conveying of the crude oil, and the metering device is a pure mechanical mechanism, which is simple in structure, easy to maintain and low in cost.

[0019] In the application, the filtering and heating of the oil are realized by one metering device, the impurities are left behind and continuously conveyed to the discharge pipe for discharge during the conveying of the crude oil by the spiral blade, the clean liquid and gas enter the outer protective tank body through the filter element, and the oil, water and gas are separated, so that the metering accuracy in the later stage is improved.

[0020] Further, the umbrella-shaped air dispersing assembly comprises a plurality of expansion pieces with different diameters and a stepped cylinder connecting the expansion pieces, the expansion piece is a structure with a gradually expanding diameter from the upper end to the lower end and a hollow inside, the plurality of expansion pieces are arranged from top to bottom in the order of the maximum diameters from small to large, and the stepped cylinder is used for connecting the upper and lower adjacent two expansion pieces, increasing the outer surface area in contact with the fluid and improving the air dispersing efficiency.

[0021] Further, the heating assembly comprises a plurality of heating wires and a cover body, the heating wires are uniformly arranged on the inner surface of the umbrella-shaped air diffusing assembly, and the cover body is arranged at the bottom of the umbrella-shaped air diffusing assembly, so that the heating wires are covered in the umbrella-shaped air diffusing assembly, heat is gathered in the umbrella-shaped air diffusing assembly, the temperature of the umbrella-shaped air diffusing assembly is increased, and the oil body flow is promoted.

[0022] Further, the driving assembly comprises a driving motor, a driving rod and a connecting support, the driving motor is arranged at the bottom of the outer protective tank body, the connecting support connects the filtering assembly and the driving rod, the driving rod is connected with the output end of the driving motor, and the inner pipe is connected with the connecting support.

[0023] Further, the drainage plate is in an inclined shape and is connected with the partition at the low position, so that the fluid can be quickly guided into the liquid storage chamber, and water-oil separation in the later stage is facilitated.

[0024] Compared with the prior art, the advantages of the present application include:

[0025] (1) The single-well crude oil transmission metering device provided by the present application can push the crude oil upwards in the conveying space through the rotation of the spiral blade, and the filtering core can intercept impurities, so that the impurities are pushed to the top by the spiral blade and discharged from the discharge pipe; at the same time, the oil, water and gas are separated into the V-shaped space of the inner support body through the liquid leakage hole, and quickly fall under the action of gravity, so that the wall-hanging phenomenon is avoided. The gas escapes upwards due to its light density, enters the inner pipe through the air inlet hole of the air outlet pipe, and is quantified in real time through the gas flow meter, so that the impurity removal, fluid separation and gas quantification are preliminarily completed, and the measurement accuracy is improved when the amount is increased;

[0026] (2) The single-well crude oil transmission metering device provided by the present application can spread the fluid, slow down the flow rate, enlarge the contact surface area, promote the efficient emission of gas, stabilize the flow and reduce the pulsation through the ladder-shaped expansion piece and the ladder-shaped cylinder structure of the umbrella-shaped air diffusing assembly after the oil-water mixture falls into the umbrella-shaped air diffusing assembly; the heating assembly heats the umbrella-shaped air diffusing assembly, and the surface of the heating assembly indirectly heats the fluid, so that the flowability of the crude oil is enhanced, the gas emission is accelerated, and the fluid can enter the subsequent metering stage in a more uniform state;

[0027] (3) The single-well crude oil transmission metering device provided by the present application is designed in an inclined manner, the drainage plate guides the fluid to quickly flow into the liquid storage chamber, and automatic layering is realized by relying on the density difference between oil and water; when the oil layer rises to the height of the oil flow pipe, it overflows into the oil product storage chamber, and the water is discharged from the bottom. The water flow meter and the oil product flow meter are arranged in the water discharge pipe and the oil discharge pipe respectively, so that the separated water and oil are independently and accurately metered, and clean fluid is output, at the same time, the flow fluctuation is eliminated, the data accuracy and the operation reliability are improved, and the structure is simplified through the shared design of the driving mechanism (the driving motor, the driving rod and the connecting support drive the filtering assembly), and the energy consumption is optimized;

[0028] In conclusion, the application reduces the use of precision components, promotes oil flow, reduces wall hanging phenomenon, and greatly reduces some unnecessary power lines and control system complex processing logic by improving the crude oil temperature at the filter assembly through mechanical structure, then further heating by the umbrella-shaped air distribution assembly, and the structure of the heating part is relatively simple. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 It is a whole schematic diagram of a single-well crude oil transmission metering device in the present application.

[0031] Figure 2 It is a sectional view schematic diagram of a single-well crude oil transmission metering device in the present application.

[0032] Figure 3 It is a sectional view schematic diagram of a single-well crude oil transmission metering device in the present application.

[0033] Figure 4 It is a sectional view schematic diagram of a single-well crude oil transmission metering device in the present application.

[0034] Figure 5 It is a sectional view schematic diagram of a single-well crude oil transmission metering device in the present application.

[0035] Figure 6 It is a sectional view schematic diagram of a single-well crude oil transmission metering device in the present application.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 1. outer protection tank body; 1.1. containing cavity; 1.2. supporting leg; 1.3. partition; 1.4. oil flow pipe; 1.5. liquid storage chamber; 1.6. oil product storage chamber; 1.7. drainage plate; 1.8. drain pipe; 1.9. water flow meter; 1.10. oil discharge pipe; 1.11. oil product flow meter; 2. filter assembly; 2.1. inner supporting body; 2.2. conveying space; 2.3. spiral blade; 2.4. liquid leakage hole; 2.5. filter core; 3. driving mechanism; 3.1. driving motor; 3.2. driving rod; 3.3. connecting support; 4. liquid inlet pipe; 5. discharge pipe; 6. exhaust pipe; 6.1. outer pipe; 6.2. inner pipe; 6.3. air inlet hole; 6.4. rotary joint; 6.5. gas flow meter; 7. umbrella-shaped air diffusing assembly; 7.1. expansion piece; 7.2. stepped cylinder; 7.3. supporting leg; 8. heating assembly; 8.1. heating wire; 8.2. cover body. DETAILED DESCRIPTION

[0038] In view of the deficiencies in the prior art, the present inventors have, through long-term research and a large number of practices, come up with the technical solution of the present application. The technical solution, its implementation process and principles will be further explained below in combination with the drawings in the embodiments of the present application and specific implementation cases.

[0039] It should be noted that the embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application. The described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, any alternative, modification, equivalent method and solution defined by the claims are covered by the spirit, principles and scope of the present application, and all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0040] In the description of the present application, "first", "second", "third" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not represent a quantity limit, but represent the existence of at least one. "Include" or "contain" and similar words mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect.

[0041] In the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, when using two sides, outer side, up and down and the like, it should be understood that it is only used for the convenience of understanding and description, considering that the structure can be facing other positions.

[0042] In the description of the present application, unless otherwise explicitly specified and limited, the technical terms or scientific terms used should be understood as the general meaning understood by those skilled in the art to which the present application belongs, and the terms "mounting", "connection", "connection" and the like should be understood in a broad sense, for example, it can be fixed connection, it can also be detachable connection, it can also be in contact connection or integral connection; For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The embodiment of the present application aims to introduce and explain the structure and cooperation relationship between the components of the single-well crude oil transmission metering device. Unless otherwise specified, the size, material and manufacturing process of each component in the single-well crude oil transmission metering device in the embodiment of the present application can be selected according to the specific circumstances, and no special limitation and explanation is made here.

[0044] Further, in order to enable the public to have a better understanding of the present application, in the following detailed description of the present application, some specific details are described in detail. The present application can also be completely understood without the description of these details by those skilled in the art.

[0045] Example 1

[0046] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , a single-well crude oil transmission metering device, comprising: an outer protective tank body 1, a filter assembly 2 located in the outer protective tank body 1, a driving mechanism 3 for driving the filter assembly 2, a liquid inlet pipe 4, a discharge pipe 5, an exhaust pipe 6, an umbrella-shaped air diffuser assembly 7, a heating assembly 8;

[0047] The outer protective tank body 1 has a containing cavity 1.1 with a conical structure at the upper end and a cylindrical structure at the lower end. The conical structure at the upper end and the cylindrical structure at the lower end have the same center. The overall shape of the outer protective tank body 1 is also conical at the upper end and cylindrical at the lower end. The top end of the outer protective tank body 1 is flat, facilitating the installation of the outer pipe 6.1. The outer protective tank body 1 has an explosion-proof performance. The bottom of the outer protective tank body 1 has support feet 1.2, which support the product.

[0048] The filter assembly 2 includes an inner support body 2.1 with an opening facing downward and an outer shape matching the shape of the containing cavity 1.1. The inner support body 2.1 is hollow inside. The inner support body 2.1 is like an inverted bowl. The center of the inner support body 2.1 coincides with the center of the containing cavity 1.1. The bottom of the inner support body 2.1 is sealingly and rotatably connected to the outer protective tank body 1. The inner support body 2.1 can rotate in the outer protective tank body 1. The top of the inner support body 2.1 is rotatably connected to the outer protective tank body 1. The outer part of the bottom of the inner support body 2.1 has a conveying space 2.2 with the outer protective tank body 1. The purpose of the sealing connection is that the fluid in the conveying space 2.2 will not seep out from the connection. The outer surface of the inner support body 2.1 and in the conveying space 2.2 is provided with a spiral blade 2.3. The spiral blade 2.3 is arranged along the outer shape of the inner support body 2.1. A plurality of evenly distributed liquid leakage holes 2.4 are formed in the inner support body 2.1. The liquid leakage holes 2.4 have filter cores 2.5. Preferably, the filter cores 2.5 fill the entire liquid leakage holes 2.4, and the filter cores 2.5 are only in the liquid leakage holes 2.4.

[0049] The driving mechanism 3 is in transmission connection with the filter assembly 2. The driving mechanism 3 drives the rotation of the filter assembly 2, i.e. the rotation of the spiral blade 2.3. The crude oil is conveyed to the upper end of the inner support body 2.1 by the spiral blade 2.3. The oil and gas fall into the outer protective tank body 1 through the liquid leakage holes 2.4. The impurities are conveyed to the upper end by the spiral blade 2.3.

[0050] The liquid inlet pipe 4 is used to convey crude oil to the conveying space. One end of the liquid inlet pipe 4 is in communication with the bottom of the conveying space to supply oil from the bottom, which is then lifted by the spiral blade 2.3.

[0051] One end of the discharge pipe 5 is in communication with the top of the conveying space, which is used to discharge the impurities conveyed to the upper end by the spiral blade 2.3 of the filter assembly 2. The free end of the discharge pipe 5 is inclined downward, which is conducive to the discharge of impurities.

[0052] The exhaust pipe 6 discharges the gas in the containing cavity 1.1 and the filter assembly 2; the exhaust pipe 6 comprises an outer pipe 6.1 outside the outer protective tank body 1 and an inner pipe 6.2 inside the filter assembly 2, the outer pipe 6.1 and the inner pipe 6.2 are connected through a rotary joint 6.4, the outer pipe 6.1 is fixed on the outer protective tank body 1, the inner pipe 6.2 is uniformly provided with a plurality of gas inlets 6.3, the gas in the outer protective tank body 1 enters the inner pipe 6.2 through the gas inlets 6.3 and is discharged by the outer pipe 6.1, a gas flow meter 6.5 is installed on the outer pipe 6.1, the gas in the crude oil entering the containing cavity 1.1 through the liquid inlet pipe 4 flows upward after passing through the filter assembly 2, so the gas is discharged by the exhaust pipe 6 after the crude oil enters the outer protective tank body 1, and the flow meter on the exhaust pipe 6 can directly measure the gas;

[0053] Referring to Figure 4 The fluid flowing out of the liquid leakage hole 2.4 falls on the umbrella-shaped gas diffusing assembly 7 under the action of gravity, flows along the outer surface of the umbrella-shaped gas diffusing assembly 7, and is spread by the umbrella-shaped gas diffusing assembly 7, so that the gas in the fluid is more easily and quickly diffused, the flow speed of the fluid is reduced, the stable flow output before metering is reduced, and the pulsation is reduced, so that the fluid is pumped in a more stable state, a plurality of supporting legs 7.3 are installed at the bottom of the umbrella-shaped gas diffusing assembly 7, the lower ends of the supporting legs 7.3 are fixed in the outer protective tank body 1, and the supporting legs 7.3 fix and support the umbrella-shaped gas diffusing assembly 7; the umbrella-shaped gas diffusing assembly 7 comprises a plurality of expansion pieces 7.1 with different diameters and stepped cylinders 7.2 connecting the expansion pieces 7.1, the expansion piece 7.1 is a structure gradually expanding in diameter from the upper end to the lower end and hollow inside, a plurality of expansion pieces 7.1 are arranged from small to large in diameter from top to bottom, and any stepped cylinder 7.2 is used to connect two adjacent expansion pieces 7.1 above and below, preferably the diameter of the stepped cylinder 7.2 is equal to the maximum diameter of the stepped cylinder 7.2 connected upward, the expansion piece 7.1 and the stepped cylinder 7.2 are connected to each other to form a large outer surface area increasing the contact with the fluid, improve the gas diffusing efficiency, and slow down the liquid flow.

[0054] Referring to Figure 6The heating assembly 8 comprises a plurality of heating wires 8.1 evenly arranged on the inner surface of the umbrella-shaped air diffusing assembly 7 and a cover 8.2 arranged at the bottom of the umbrella-shaped air diffusing assembly 7 to cover the heating wires 8.1 in the umbrella-shaped air diffusing assembly 7. The cover 8.2 and the umbrella-shaped air diffusing assembly 7 form a closed body which is internally vacuumized to quickly transmit heat. The umbrella-shaped air diffusing assembly 7 and the cover 8.2 are made of insulating material. The cover 8.2 concentrates heat in the umbrella-shaped air diffusing assembly 7 to increase the temperature of the umbrella-shaped air diffusing assembly 7, thereby promoting the flow of oil. The heating structure is simple and easy to maintain. The inner tube 6.2 is rotatably connected with the cover 8.2, and the rotating part is sealed.

[0055] The driving assembly comprises a driving motor 3.1, a driving rod 3.2 and a connecting bracket 3.3. The driving motor 3.1 is arranged at the bottom of the outer tank 1. The connecting bracket 3.3 connects the filter assembly 2 and the driving rod 3.2. The driving rod 3.2 is connected with the output end of the driving motor 3.1. The inner tube 6.2 is connected with the connecting bracket 3.3.

[0056] The bottom of the filter assembly 2 is spaced apart from the bottom surface of the accommodating cavity 1.1 to store filtered liquid. The bottom of the outer tank 1 is provided with a partition 1.3 which divides the space at the bottom of the outer tank into a liquid storage chamber 1.5 and an oil storage chamber 1.6. An oil flow pipe 1.4 is arranged at the upper end of the partition 1.3. If the partition is arranged in the middle, a hole is needed to be arranged in the middle to allow the driving rod 3.2 to rotate. A drainage plate 1.7 is arranged in the outer tank 1 below the filter assembly 2. The drainage plate 1.7 is used to guide the liquid flowing out of the liquid leakage hole 2.4 and the umbrella-shaped air diffusing assembly 7 into the liquid storage chamber 1.5. The drainage plate 1.7 is inclined and connected with the partition 1.3 at the lower end. This is beneficial to quickly guide the liquid into the liquid storage chamber 1.5 and separate water and oil in the later stage.

[0057] The liquid storage chamber 1.5 and the oil storage chamber 1.6 are respectively connected with a water drain pipe 1.8 and an oil drain pipe 1.10. A water flow meter 1.9 is arranged on the water drain pipe 1.8. An oil flow meter 1.11 is arranged on the oil drain pipe 1.10. The water and oil which are fully dispersed enter the liquid storage chamber 1.5. As the liquid level rises, the oil floats at the upper end. When the oil rises to the oil flow pipe 1.4, it enters the oil storage chamber 1.6. At this time, the water is drained through the water drain pipe 1.8 while being measured. The oil is drained through the oil drain pipe 1.10 while being measured. Each obtains relatively accurate data and relatively clean fluid.

[0058] The working principle of the present application: crude oil is transported into the large conveying space 2.2 through the liquid inlet pipe 4, the spiral blades 2.3 in the conveying space 2.2 continuously rotate under the driving of the driving mechanism 3, pushing the crude oil to move axially, the crude oil rubs against the outer protective tank body 1, the shear force between the spiral blades 2.3 and the crude oil, and the rotation of the motor generate heat, and when the crude oil is vertically transported, the spiral blades 2.3 need more thrust due to the influence of gravity, which aggravates the heating phenomenon, so that the crude oil is heated, and the crude oil flows smoothly.

[0059] During the conveying process, impurities remain in the conveying space 2.2, and clean crude oil, i.e. water, oil and gas, passes through the filter core 2.5 and enters the containing space inside the inner support body, the gas flows upward under the action of gravity, passes through the exhaust pipe 6 and is measured by the gas flow meter 6.5; the water and oil fall under the action of gravity, and since the inner part of the inner support body 2.1 is a V-shaped space, the water and oil in the V-shaped space can fall vertically and quickly to the bottom surface of the outer protective tank body 1 without meeting each other, so even if the crude oil is not so hot, it will not cause wall sticking phenomenon.

[0060] Then the water and oil fall into the umbrella-shaped gas dispersion assembly 7, flow along the outer surface of the umbrella-shaped gas dispersion assembly 7, and the fluid is spread by the umbrella-shaped gas dispersion assembly 7, which further slows down the fluid flow speed, and the gas in the fluid is more easily and quickly dispersed, at the same time, since the outer surface of the umbrella-shaped gas dispersion assembly 7 is ladder-shaped, the fluid flow speed is slowed down, so that stable flow output and reduced pulsation are achieved before the fluid is measured, the fluid is in a more stable state, avoiding flow fluctuation and reducing periodic changes in output flow, and improving flow accuracy.

[0061] The heating assembly 8 below the umbrella-shaped gas dispersion assembly 7 heats the umbrella-shaped gas dispersion assembly 7, increases the heat of the umbrella-shaped gas dispersion assembly 7, and further heats the fluid in contact with the umbrella-shaped gas dispersion assembly 7, enhancing the flow force of the crude oil.

[0062] The water and oil, which have relatively fully dispersed gas, enter the liquid storage chamber 1.5, and as the liquid level rises, the oil floats at the upper end, when the oil liquid level rises to the oil flow passage 1.4, the oil enters the oil product storage chamber 1.6 through the oil flow passage 1.4, at this time, the water is discharged through the water discharge pipe 1.8 while being measured, and the oil is discharged through the oil discharge pipe 1.10 while being measured, and each obtains relatively accurate data and relatively clean fluid during measurement; the discharged fluid is also relatively time-saving when it is further filtered in the later stage.

[0063] It should be understood that the above embodiments are only to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot be considered that the specific implementation of the present application is limited to these descriptions. For ordinary skilled in the art to which the present application belongs, without departing from the concept of the present application, some simple deductions or substitutions can be made, and any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A single-well crude oil transmission and metering device, characterized in that, include: The outer protective tank has a cavity inside which is a conical structure at the top and a cylindrical structure at the bottom, with the center of the conical structure at the top and the center of the cylindrical structure at the bottom coinciding. A filter assembly includes an inner support body with its opening facing downwards and its shape adapted to the shape of the receiving cavity. The center of the inner support body coincides with the center of the receiving cavity. The bottom of the inner support body is sealed and rotatably connected to the outer protective tank. There is a transport space between the portion of the inner support body other than its bottom and the outer protective tank. A spiral blade is provided on the outer surface of the inner support body and within the transport space. The spiral blade is arranged along the outer shape of the inner support body. Several evenly distributed leakage holes are opened on the inner support body, and filter elements are provided in the leakage holes. The drive mechanism is connected to the filter assembly in a transmission manner, drives the filter assembly to rotate, and transports crude oil to the upper end through the spiral blades. Oil and gas fall into the outer protective tank through the leakage hole, and impurities are transported to the upper end by the spiral blades. The inlet pipe is used to transport crude oil to the transport space, and one end of the inlet pipe is connected to the bottom of the transport space; The discharge pipe is used to discharge impurities conveyed to the upper part by the spiral blades of the filter assembly. One end of the discharge pipe is connected to the top of the conveying space. An exhaust pipe discharges gas from the containment cavity and filter assembly. The exhaust pipe includes an outer pipe and an inner pipe. The outer pipe is located outside the outer protective tank, and the inner pipe is located inside the inner support body. The outer pipe and the inner pipe are connected by a rotary joint. The outer pipe is fixed on the outer protective tank. The inner pipe has several air inlets evenly distributed. A gas flow meter is installed on the outer pipe. An umbrella-shaped venting assembly spreads and disperses the fluid flowing out of the leakage hole. The bottom of the umbrella-shaped venting assembly is provided with several support legs, and the lower ends of the support legs are fixed inside the outer protective tank. The heating component adds heat to the umbrella-shaped gas diffuser assembly, enhancing the flow dynamics of the crude oil and facilitating gas dissipation. The umbrella-shaped gas diffuser assembly includes several expanders of different diameters and stepped cylinders connecting them. Each expander has a gradually increasing diameter from top to bottom and is hollow internally. Several expanders are arranged from top to bottom with their maximum diameter increasing. The stepped cylinder connects two adjacent expanders. The heating component includes several heating wires and a cover. The heating wires are evenly installed on the inner surface of the umbrella-shaped gas diffuser assembly, and the cover is installed at the bottom of the assembly, enclosing the heating wires inside. The driving mechanism includes a drive motor, a drive rod, and a connecting bracket. The drive motor is located at the bottom of the outer protective tank. The connecting bracket connects the filter assembly and the drive rod. The drive rod is connected to the output end of the drive motor, and the inner tube is connected to the connecting bracket. There is a distance between the bottom of the filter assembly and the bottom surface of the receiving cavity. The bottom of the outer protective tank has a partition that divides the bottom space of the outer protective tank into a liquid storage chamber and an oil storage chamber. An oil flow pipe is provided at the upper end of the partition. A guide plate is provided inside the outer protective tank and below the filter assembly. The guide plate is used to introduce the liquid flowing out of the leakage hole and the umbrella-shaped venting assembly into the liquid storage chamber. The liquid storage chamber and the oil storage chamber are respectively connected by a drain pipe and an oil drain pipe. A water flow meter is installed on the drain pipe, and an oil flow meter is installed on the oil drain pipe.

2. The single-well crude oil transmission and metering device according to claim 1, characterized in that: The drainage plate is inclined and connected to the partition at its lower part.

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