Single well crude oil transmission metering device

Abstract

The invention discloses a single well crude oil transmission metering device which comprises an outer protection tank body, a filtering assembly located in the outer protection tank body and a driving mechanism for driving the filtering assembly. A containing cavity and a filtering assembly are arranged in the outer protection tank body, the filtering assembly comprises an inner supporting body and a spiral blade, the spiral blade is arranged along the appearance of the inner supporting body, a plurality of evenly-distributed liquid leakage holes are formed in the inner supporting body, and filtering elements are arranged in the liquid leakage holes; fluid flowing out of the liquid leakage holes flows along the outer surface of the umbrella-shaped gas dispersing assembly under the action of gravity, the fluid is spread by the umbrella-shaped gas dispersing assembly, gas in the fluid is more easily and rapidly dispersed, meanwhile, the wall hanging phenomenon is avoided, impurities in oil products are filtered out in the crude oil conveying process of the spiral blades, then metering is conducted, the metering accuracy is improved, and the metering efficiency is improved. The structure is simple, maintenance is easy, and 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, and then 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, which leads to 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 has high 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 heating method for 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 for the steam flow to heat the metering device, and a steam outlet is also needed, which leads to 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] The single-well crude oil transmission metering device aims to solve the problems of the prior art.

[0008] To achieve the above-mentioned purpose, the technical scheme adopted by the present application comprises: 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. The outer protective tank body has a receiving cavity with a conical upper end and a cylindrical lower end, and the center of the conical upper end coincides with the center of the cylindrical lower end. 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, facilitating the installation of an outer pipe. The bottom of the outer protective tank body has supporting legs, which support the outer protective tank body and thus support the product. The filter assembly comprises an inner support body with an opening facing downward and a shape adapted to the shape of the receiving cavity. The inner support body is hollow inside, and the center of the inner support body coincides with the center of the receiving 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 the conveying space are provided with helical blades. The helical blades are arranged along the shape of the inner support body. A plurality of evenly distributed liquid leakage holes are formed in the inner support body, and each liquid leakage hole has a filter core. The driving mechanism is in transmission connection with the filter assembly, and drives 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. 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, and the oil is supplied from the bottom and lifted by the helical blades. One end of the material discharge pipe is in communication with the top of the conveying space, and is used for discharging the impurities conveyed to the upper end by the helical blades of the filter assembly. The exhaust pipe discharges the gas in the receiving 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 discharged by the outer pipe. A gas flow meter is installed on the outer pipe. After the crude oil in the receiving 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. The flow meter on the exhaust pipe can directly measure the gas. The fluid flowing out of the liquid leakage hole falls onto the umbrella-shaped air diffusing assembly under the action of gravity. The fluid flows along the outer surface of the umbrella-shaped air diffusing assembly. The fluid is spread by the umbrella-shaped air diffusing assembly, and the gas in the fluid is more easily and quickly diffused. A plurality of supporting legs are installed at the bottom of the umbrella-shaped air diffusing assembly. 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 diffusing assembly. The heating assembly umbrella-shaped air diffusing assembly provides heat, adds heat to the umbrella-shaped air diffusing assembly, and further heats the fluid in contact with the umbrella-shaped air diffusing assembly, enhances the flow force of the crude oil, and makes the gas easier to diffuse; The bottom of the filter assembly and the bottom surface of the containing cavity have a distance for storing filtered liquid, the bottom of the outer protective tank body has a partition, the partition divides the space of the bottom of the outer protective pipe into a liquid storage chamber and an oil storage chamber, the upper end of the partition is provided with an oil flow passage, a flow guide plate is arranged in the outer protective tank body and below the filter assembly, the flow guide plate is used for guiding the liquid flowing out of the liquid leakage hole and the umbrella-shaped air diffusing 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 that are fully diffused gas enter the liquid storage chamber, as the liquid level rises, the oil floats on 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.

[0009] In the application, the driving mechanism drives the filter assembly to filter the liquid, at this time, heat generated by direct friction between the spiral blade and the outer protective tank body is used to heat the crude oil to promote the flow of the crude oil, and the wall sticking phenomenon is avoided, the spiral blade filters impurities in the oil 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.

[0010] In the application, one metering device is used to filter and heat the oil, impurities are left behind during the conveying of the crude oil by the spiral blade and continue to be conveyed to the discharge pipe for discharge, clean liquid and gas enter the outer protective tank body through the filter core, oil, water and gas are separated, and the accuracy of later metering is improved.

[0011] Further, the umbrella-shaped air diffusing 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 small to large in diameter from top to bottom, 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 diffusing efficiency.

[0012] Further, the heating assembly comprises a plurality of heating wires and a cover body, the heating wires are uniformly installed on the inner surface of the umbrella-shaped air diffusing assembly, and the cover body is installed at the bottom of the umbrella-shaped air diffusing assembly to cover the heating wires in the umbrella-shaped air diffusing assembly, so that heat is gathered in the umbrella-shaped air diffusing assembly, the temperature of the umbrella-shaped air diffusing assembly is increased, and the flow of the oil body is promoted.

[0013] Further, the driving assembly comprises a driving motor, a driving rod and a connecting support, the driving motor is located 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.

[0014] Further, the drainage plate is in an inclined shape and is connected with the partition at the low position, which is beneficial to quickly guide the fluid into the liquid storage chamber and beneficial to water-oil separation in the later stage.

[0015] Compared with the prior art, the advantages of the present application include: (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 of the filtering assembly, 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 as to avoid the wall-hanging phenomenon. 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 as to preliminarily complete the impurity removal, fluid separation and gas quantification, so as to improve the measurement accuracy when the amount is increased; (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 gas dispersion assembly after the oil-water mixture falls into the umbrella-shaped gas dispersion assembly; the heating assembly heats the umbrella-shaped gas dispersion assembly, and the surface of the heating assembly indirectly heats the fluid, so as to enhance the flowability of the crude oil, accelerate the emission of gas, and ensure that the fluid enters the subsequent metering stage in a more uniform state; (3) The single-well crude oil transmission metering device provided by the present application can guide the fluid to quickly flow into the liquid storage chamber through the inclined design of the drainage plate, and realize automatic layering 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 respectively arranged on the water discharge pipe and the oil discharge pipe, so as to independently and accurately measure the separated water and oil, output clean fluid, eliminate flow fluctuation, improve data accuracy and operation reliability. The driving mechanism is shared (the driving motor, the driving rod and the connecting support drive the filtering assembly) to simplify the structure and optimize the energy consumption; In summary, the present application reduces the use of precision components, improves the temperature of the crude oil through the mechanical structure at the filtering assembly, then the heating assembly further heats the fluid when passing through the umbrella-shaped gas dispersion assembly, promotes the flow of the oil product, reduces the wall-hanging phenomenon, and the structure of the heating part is relatively simple, which greatly reduces some unnecessary power lines and control system complex processing logic voice, has simple structure, is easy to maintain, consumes less power, and reduces the metering cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall schematic diagram of a single-well crude oil transmission and metering device according to the present invention; Figure 2 This is a top view schematic diagram of a single-well crude oil transmission and metering device according to the present invention; Figure 3 This is a top view schematic diagram of the diversion plate of a single-well crude oil transmission and metering device according to the present invention; Figure 4 This is a three-dimensional schematic diagram of an umbrella-shaped gas dispersing component for a single-well crude oil transmission and metering device according to the present invention. Figure 5 This is a top view schematic diagram of a connecting frame for a single-well crude oil transmission and metering device according to the present invention; Figure 6 This is a top view schematic diagram of the heating component of a single-well crude oil transmission metering device according to the present invention.

[0018] Figure label: 1. Outer tank body; 1.1 Receiving cavity; 1.2 Support legs; 1.3 Partition; 1.4 Oil flow pipe; 1.5 Liquid storage chamber; 1.6 Oil storage chamber; 1.7 Drain plate; 1.8 Drain pipe; 1.9 Water flow meter; 1.10 Oil drain pipe; 1.11 Oil flow meter; 2. Filter assembly; 2.1 Inner support body; 2.2 Transport space; 2.3 Spiral blades; 2.4 Leakage hole; 2.5 Filter element; 3. Drive mechanism; 3.1 Drive motor; 3.2 Drive rod; 3.3 Connecting bracket; 4. Liquid inlet pipe; 5. Discharge pipe; 6. Exhaust pipe; 6.1 Outer pipe; 6.2 Inner pipe; 6.3 Air inlet; 6.4 Rotary joint; 6.5 Gas flow meter; 7. Umbrella-shaped ventilation assembly; 7.1. Expansion component; 7.2. Stepped tube; 7.3. Support leg; 8. Heating assembly; 8.1. Heating wire; 8.2. Cover. Detailed Implementation

[0019] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0020] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0022] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0023] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0024] The present invention aims to introduce and explain the structural composition of a single-well crude oil transmission and metering device and the cooperation relationship between the various components. Unless otherwise specified, the dimensions, materials and manufacturing processes of the various components in the single-well crude oil transmission and metering device in the present invention can be selected according to specific circumstances, and no special limitations or explanations are made here.

[0025] Furthermore, to provide the public with a better understanding of the present invention, certain specific details are described in detail in the following description of the invention. However, those skilled in the art will fully understand the invention even without these detailed descriptions.

[0026] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A single-well crude oil transmission and metering device includes: an outer protective tank 1, a filter assembly 2 located inside the outer protective tank 1, a drive mechanism 3 for driving the filter assembly 2, an inlet pipe 4, a discharge pipe 5, an exhaust pipe 6, an umbrella-shaped gas dispersing assembly 7, and a heating assembly 8. The outer protective tank 1 has a cavity 1.1 with a conical upper end and a cylindrical lower end. The centers of the conical upper end and the cylindrical lower end coincide. The overall shape of the outer protective tank 1 is also a conical upper end and a cylindrical lower end. The top of the outer protective tank 1 is flat, which facilitates the installation of the outer tube 6.1. The outer protective tank 1 has explosion-proof performance. The bottom of the outer protective tank 1 has a support foot 1.2, which supports the outer protective tank 1 and thus supports the product of this invention. The filter assembly 2 includes an inner support body 2.1 with its opening facing downwards and its shape adapted to the shape of the receiving cavity 1.1. The inner support body 2.1 is hollow inside, resembling an inverted bowl. The center of the inner support body 2.1 coincides with the center of the receiving cavity 1.1. The bottom of the inner support body 2.1 is sealed and rotatably connected to the outer protective tank 1. The inner support body 2.1 can rotate within the outer protective tank 1. The top of the inner support body 2.1 is rotatably connected to the outer protective tank 1. There is a transport space between the portion of the inner support body 2.1 other than its bottom and the outer protective tank 1. 2.2 The purpose of the sealed connection is to prevent the fluid in the transport space 2.2 from leaking out from the connection. The outer surface of the inner support body 2.1 and the transport space 2.2 are equipped with spiral blades 2.3. The spiral blades 2.3 are spirally arranged along the outer shape of the inner support body 2.1. The inner support body 2.1 is provided with a number of evenly distributed leakage holes 2.4. The leakage holes 2.4 are equipped with filter elements 2.5. Preferably, the filter elements 2.5 fill the entire leakage hole 2.4 and are only inside the leakage hole 2.4. The drive mechanism 3 is connected to the filter assembly 2, driving the filter assembly 2, i.e. the spiral blades 2.3, to rotate. The crude oil is transported to the upper end of the inner support body 2.1 through the spiral blades 2.3. The oil and gas fall into the outer protective tank 1 through the leakage hole 2.4, and impurities are transported to the upper end by the spiral blades 2.3. The inlet pipe 4 transports crude oil to the conveying space. One end of the inlet pipe 4 is connected to the bottom of the conveying space, and the oil is supplied from the bottom and then lifted by the spiral blades 2.3. One end of the discharge pipe 5 is connected to the top of the conveying space to discharge impurities conveyed to the upper end by the spiral blades 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. The exhaust pipe 6 discharges the gas from the containment chamber 1.1 and the filter assembly 2. The exhaust pipe 6 includes an outer pipe 6.1 and an inner pipe 6.2. The outer pipe 6.1 is located outside the outer protective tank 1, and the inner pipe 6.2 is located inside the filter assembly 2. The outer pipe 6.1 and the inner pipe 6.2 are connected by a rotary joint 6.4. The outer pipe 6.1 is fixed on the outer protective tank 1. The inner pipe 6.2 has several air inlets 6.3 evenly distributed. The gas in the outer protective tank 1 enters the inner pipe 6.2 through the air inlets 6.3 and is then discharged through the outer pipe 6.1. A gas flow meter 6.5 is installed on the outer pipe 6.1. After the crude oil enters the containment chamber 1.1 through the liquid inlet pipe 4 and passes through the filter assembly 2, the gas in the crude oil rises. Therefore, after the crude oil enters the outer protective tank 1, the gas is discharged through the exhaust pipe 6. The flow meter on the exhaust pipe 6 can directly measure the gas. See Figure 4 The fluid flowing out from the leakage hole 2.4 falls onto the umbrella-shaped diffuser assembly 7 under the action of gravity. The fluid flows along the outer surface of the umbrella-shaped diffuser assembly 7 and is spread out by the umbrella-shaped diffuser assembly 7, making it easier for the gas in the fluid to dissipate quickly. At the same time, the fluid flow rate is reduced, so the flow rate output is stabilized and pulsation is reduced before being metered, allowing the fluid to be pumped in a more stable state. Several support legs 7.3 are installed at the bottom of the umbrella-shaped diffuser assembly 7. The lower ends of the support legs 7.3 are fixed inside the outer protective tank 1. The support legs 7.3 fix and support the umbrella-shaped diffuser assembly 7. The umbrella-shaped diffuser assembly 7 includes several Several expanders 7.1 with different diameters and stepped cylinders 7.2 connecting the expanders 7.1 are arranged from top to bottom with gradually increasing diameters. Each expander 7.1 is a hollow structure with gradually increasing diameters from top to bottom. Any stepped cylinder 7.2 is used to connect two adjacent expanders 7.1. Preferably, the diameter of the stepped cylinder 7.2 is equal to the maximum diameter of the stepped cylinder 7.2 it connects to. The expanders 7.1 and stepped cylinders 7.2 are connected to each other to form a large outer surface area that increases the contact area with the fluid, improves the gas dissipation efficiency, and slows down the liquid flow.

[0027] See Figure 6 The heating component 8 includes several heating wires 8.1 and a cover 8.2. The heating wires 8.1 are evenly installed on the inner surface of the umbrella-shaped ventilation component 7. The cover 8.2 is installed at the bottom of the umbrella-shaped ventilation component 7, covering the heating wires 8.1 inside the umbrella-shaped ventilation component 7. The cover 8.2 and the umbrella-shaped ventilation component 7 form a closed body with an internal vacuum setting, which allows for fast heat transfer. Both the umbrella-shaped ventilation component 7 and the cover 8.2 are made of insulating materials. The cover 8.2 allows heat to accumulate inside the umbrella-shaped ventilation component 7, increasing the temperature of the umbrella-shaped ventilation component by 7 degrees and promoting oil flow. The heating structure here is relatively simple and easy to maintain. The inner tube 6.2 is rotatably connected to the cover 8.2, and the rotation point is sealed.

[0028] The drive assembly includes a drive motor 3.1, a drive rod 3.2, and a connecting bracket 3.3. The drive motor 3.1 is located at the bottom of the outer protective tank 1. The connecting bracket 3.3 connects the filter assembly 2 and the drive rod 3.2. The drive rod 3.2 is connected to the output end of the drive motor 3.1. The inner tube 6.2 is connected to the connecting bracket 3.3.

[0029] There is a distance between the bottom of the filter assembly 2 and the bottom surface of the receiving cavity 1.1 for storing the filtered liquid. The bottom of the outer protective tank 1 has a partition 1.3, which divides the space at the bottom of the outer protective tube into a liquid storage chamber 1.5 and an oil storage chamber 1.6. An oil flow pipe 1.4 is opened at the upper end of the partition 1.3. If the partition is located in the middle, a hole is needed in the middle to allow the drive rod 3.2 to rotate. A guide plate 1.7 is provided inside the outer protective tank 1 and below the filter assembly 2. The guide plate 1.7 is used to introduce the liquid flowing out of the leakage hole 2.4 and the umbrella-shaped aeration assembly 7 into the liquid storage chamber 1.5. The guide plate 1.7 is inclined and connected to the partition 1.3 at its lower part, which is conducive to quickly introducing the fluid into the liquid storage chamber 1.5 and facilitates the subsequent water and oil separation. The liquid storage chamber 1.5 and the oil storage chamber are connected to a drain pipe 1.8 and an oil drain pipe 1.10, respectively. A water flow meter 1.9 is installed on the drain pipe 1.8, and an oil flow meter 1.11 is installed on the oil drain pipe 1.10. The water and oil, after being fully degassed, enter the liquid storage chamber 1.5. As the liquid level rises, the oil floats on top. 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 discharged through the drain pipe 1.8 and measured at the same time, and the oil is discharged through the oil drain pipe 1.10 and measured at the same time, so that relatively accurate data and relatively clean fluid are obtained.

[0030] The working principle of this invention is as follows: Crude oil is transported into the large transport space 2.2 through the inlet pipe 4. The spiral blades 2.3 in the transport space 2.2 rotate continuously under the drive of the drive mechanism 3, pushing the crude oil to move axially. Friction is generated between the crude oil and the outer protective tank 1, as well as the shear force between the spiral blades 2.3 and the crude oil, and the motor operation. In vertical transport, the spiral blades 2.3 need greater thrust due to the influence of gravity, which aggravates the heating phenomenon. Therefore, the crude oil is heated to make the crude oil flow smoothly. During the transportation process, impurities remain in the transport space 2.2, while clean crude oil, i.e., water, oil, and gas, passes through the filter element 2.5 and enters the containment space inside the inner support body. The gas rises under the action of gravity, is discharged 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. Since the interior of the inner support body 2.1 is a V-shaped space, the water and oil located in the V-shaped space can fall vertically and quickly to the bottom of the outer protective tank 1 without meeting each other. Therefore, even if the crude oil here is not very hot, there will be no wall adhesion. Next, water and oil fall onto the umbrella-shaped diffuser assembly 7. The water and oil flow along the outer surface of the umbrella-shaped diffuser assembly 7. The fluid is spread out by the umbrella-shaped diffuser assembly 7, which further slows down the fluid flow speed. The gas in the fluid can be more easily and quickly dissipated. At the same time, because the outer surface of the umbrella-shaped diffuser assembly 7 is stepped, it slows down the fluid flow speed. Therefore, the flow output is stabilized and pulsation is reduced before it is metered, so that the fluid is in a more stable state, avoiding flow fluctuations, reducing periodic changes in the output flow, and improving flow accuracy. The heating component 8 below the umbrella-shaped air diffuser component 7 heats the umbrella-shaped air diffuser component 7, increases the heat of the umbrella-shaped air diffuser component 7, and then heats the fluid in contact with the umbrella-shaped air diffuser component 7, thereby enhancing the flow dynamics of crude oil. Water and oil, having undergone relatively thorough gas dissipation, enter the liquid storage chamber 1.5. As the liquid level rises, the oil floats to the top. When the oil level reaches the oil flow pipe 1.4, it flows into the oil storage chamber 1.6 through the oil flow pipe 1.4. At this time, water is discharged through the drain pipe 1.8 and simultaneously measured, while oil is discharged through the oil drain pipe 1.10 and simultaneously measured. During measurement, relatively accurate data and relatively clean fluid are obtained for each. The outflowing fluid also saves on steps when undergoing more refined filtration in the later stages.

[0031] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A single well crude oil transfer metering device, characterized by, The utility model provides a kind of crude oil filter, including: Outer protective tank body, the outer protective tank body has containing cavity with conical structure upper end and cylindrical structure lower end inside, the conical structure upper end and the cylindrical structure lower end center of mass coincide; Filtering assembly, the filtering assembly includes opening downward, the inner support body of shape and containing cavity shape adaptation, the center of mass of the inner support body and containing cavity center of mass coincide, the bottom of the inner support body and outer protective tank body are sealed and rotationally connected, the outer part of the bottom of the inner support body and outer protective tank body has conveying space, the outer surface of the inner support body and in conveying space is equipped with helical blade, the helical blade is arranged along the shape of the inner support body, the inner support body is equipped with several evenly distributed liquid leakage holes, the liquid leakage hole has filter core inside; Driving mechanism, the driving mechanism is transmission connected with filtering assembly, drives filtering assembly rotation, and crude oil is transported to upper end by helical blade, and oil and gas fall into outer protective tank body by liquid leakage hole, and impurities are transported to upper end by helical blade; Liquid inlet pipe, for conveying crude oil to conveying space, one end of the liquid inlet pipe is communicated with the bottom of conveying space; Discharge pipe, for discharging impurities transported to upper end by helical blade of filtering assembly, one end of the discharge pipe is communicated with the top of conveying space; Exhaust pipe, for discharging gas in containing cavity and filtering assembly, the exhaust pipe includes outer pipe and inner pipe, the outer pipe is located outside outer protective tank body, the inner pipe is located in inner support body, the outer pipe and inner pipe are connected by swivel joint, the outer pipe is fixed on outer protective tank body, the inner pipe is evenly equipped with several air inlets, and the outer pipe is equipped with gas flow meter; Umbrella-shaped air diffusing assembly, for spreading and diffusing fluid flowing out of liquid leakage hole, the bottom of the umbrella-shaped air diffusing assembly is equipped with several supporting legs, and the lower end of the supporting leg is fixed in outer protective tank body; Heating assembly, for increasing heat of umbrella-shaped air diffusing assembly, enhancing crude oil flow force, and assisting gas emission. The bottom of the filtering assembly and the bottom surface of the containing cavity have a distance, the distance separates the bottom space of the outer protective tube into liquid storage chamber and oil storage chamber, a flow pipe is arranged between the liquid storage chamber and the oil storage chamber, a drainage plate is arranged in the outer protective tank body and below the filtering assembly, the drainage plate is used for guiding the liquid flowing out of the liquid leakage hole and the umbrella-shaped air diffusing assembly into the liquid storage chamber, a drain pipe and an oil discharge pipe are respectively arranged and communicated with the liquid storage chamber and the oil storage chamber, a water flow meter is arranged on the drain pipe, and an oil flow meter is arranged on the oil discharge pipe.

2. A single well crude oil transfer metering device according to claim 1, characterized in that: The umbrella-shaped air diffusing assembly includes several expansion pieces with different diameters and a stepped cylinder connecting the expansion pieces, the expansion piece is gradually expanded from the upper end to the lower end and has a hollow structure, the several expansion pieces are arranged from small to large in diameter from top to bottom, and the stepped cylinder is used for connecting two adjacent expansion pieces.

3. A single well crude oil transfer metering device according to claim 2, wherein: The heating assembly includes several heating wires and a cover, the heating wires are evenly arranged on the inner surface of the umbrella-shaped air diffusing assembly, and the cover is arranged at the bottom of the umbrella-shaped air diffusing assembly to cover the heating wires in the umbrella-shaped air diffusing assembly.

4. A single well crude oil transfer metering device according to claim 3 wherein: The driving assembly comprises a driving motor, a driving rod and a connecting support, the driving motor is located 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.

5. A single well crude oil transfer metering device as defined in claim 1 wherein: The bottom of the outer protective tank body is provided with a partition, the partition divides the space at the bottom of the outer protective pipe into a liquid storage chamber and an oil product storage chamber, an oil flow passage is formed in the upper end of the partition, and the drainage plate is inclined and connected with the partition.

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