Automatic air-cooling gradient cooling device for electric submersible pump well

Abstract

The utility model discloses an automatic air-cooling gradient cooling device for an electric submersible pump well. The automatic air-cooling gradient cooling device comprises a base, a support, a heat dissipation barrel, a heat dissipation coil pipe, a flow velocity column, an air-cooling assembly and an anti-explosion temperature control box. According to the heat dissipation device, the heat dissipation barrels and the heat dissipation coil pipes are distributed in multiple layers, and the heat dissipation coil pipes are thicker than the liquid inlet pipeline in pipe diameter, so that the flow speed of high-temperature crude oil entering the heat dissipation coil pipes is reduced; in the process that high-temperature crude oil flows to the top-layer heat dissipation coil pipe from the bottom-layer heat dissipation coil pipe, each air cooling assembly achieves gradient cooling of the high-temperature crude oil through air cooling heat exchange, each vortex fan operates, cooling air is sucked in from the outside of a spiral air inlet, formed vortex cooling air passes through the position between the outer surface of a flow velocity column and the inner wall of a heat dissipation barrel, and the cooling effect of the high-temperature crude oil is achieved. The flow speed of cooling air can be greatly increased, and air cooling heat dissipation can be fully carried out on the heat dissipation coil pipe. Meanwhile, the outlet thermometer can monitor the temperature of crude oil at the outlet in real time and feed back data to the anti-explosion temperature control box, the anti-explosion temperature control box controls the vortex fans to be turned on and turned off in good time, and therefore automatic cooling is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to an oil transportation and cooling device for a submersible electric pump well. Background Art

[0002] In the process of crude oil extraction, when the oil well cannot maintain natural flow or the production is too low even if it can flow naturally, mechanical energy must be used for oil production. The rod pump for oil production is the most commonly used mechanical oil production method. This oil production method has the advantages of simple equipment, small investment, convenient operation and maintenance, etc. However, due to its limited displacement and difficulty in application in inclined wells, at present, using a large-displacement submersible electric pump for oil production is an important means to maintain high and stable production in oil fields.

[0003] The submersible electric pump is an important mechanical oil production equipment, which has the characteristics of a large displacement range, high pump efficiency, high automation degree, etc. The submersible electric pump for oil production is one of the important ways to improve the liquid production rate of oil and gas wells and realize the continuous stable production and resumption of production of oil and gas wells.

[0004] The submersible electric pump well has high productivity and high crude oil flow rate. The high-temperature crude oil (95 - 100 °C) in the wellbore is carried into the ground lined pipe for oil transportation. The maximum working temperature of the lined pipe is 65 °C. The high-temperature crude oil passing through the lined pipe will cause damage to the internal components, endangering the normal transportation of crude oil and related operations.

[0005] At present, there is no effective measure for cooling high-temperature crude oil transportation in submersible electric pump wells on site.

[0006] Therefore, the existing technology still needs to be improved. Summary of the Invention

[0007] In view of the deficiencies of the above-mentioned prior art, the purpose of the present utility model is to provide an automatic air-cooled gradient cooling device for a submersible electric pump well, aiming to solve the difficulties in cooling high-temperature crude oil transportation in a submersible electric pump well.

[0008] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0009] In a first aspect, an automatic air-cooled gradient cooling device for a submersible electric pump well includes:

[0010] A base, on which supports are provided;

[0011] A plurality of heat dissipation cylinders, stacked in groups of two on the base to form multiple layers, and fixed between each layer by supports;

[0012] A heat dissipation coil, spirally arranged in the heat dissipation cylinder and connected through a plurality of heat dissipation cylinders. The port at the bottom of the heat dissipation coil is the inlet, and the port at the top is the outlet;

[0013] The flow velocity column is arranged inside the spiral part of the heat dissipation coil in the heat dissipation cylinder;

[0014] The air-cooling assembly is arranged at the end of the heat dissipation cylinder.

[0015] Furthermore, the air-cooling assembly includes:

[0016] The air inlet is arranged at one end of the heat dissipation cylinder;

[0017] The eddy current fan is arranged at the other end of the heat dissipation cylinder.

[0018] Furthermore, the air inlet is rotatably connected to one end of the heat dissipation cylinder, and the air inlet is circumferentially enclosed by a plurality of fan blades.

[0019] Furthermore, one end of the inlet of the heat dissipation coil is provided with a liquid inlet pipeline, and the other end of the outlet is provided with a liquid outlet pipeline. The heat dissipation coil is arranged inside the heat dissipation cylinder, and the connecting pipeline is used to connect the heat dissipation coils inside the heat dissipation cylinder between two by two.

[0020] Furthermore, the liquid inlet pipeline and the heat dissipation coil are connected by a clamp head, and the liquid outlet pipeline and the heat dissipation coil are connected by a clamp head.

[0021] Furthermore, it further includes an explosion-proof temperature control box. The explosion-proof temperature control box is electrically connected to the air-cooling assembly, and a thermometer is installed at the end of the liquid outlet pipeline to feedback temperature data to the temperature control box in real time.

[0022] Furthermore, a plurality of rib plates are further arranged on the inner wall of the heat dissipation cylinder, and the heat dissipation pipeline is fixed to the inner wall of the heat dissipation cylinder through the rib plates.

[0023] Furthermore, the base adopts a "ri" - shaped groove steel structure, and a plurality of lifting lugs are further arranged on the base

[0024] The technical solution adopted by the utility model has the following beneficial effects:

[0025] In this application, the heat dissipation cylinder and the heat dissipation coil are distributed in multiple layers. Since the diameter of the heat dissipation coil is thicker than that of the liquid inlet pipeline, the flow velocity of the high-temperature crude oil decreases after entering the heat dissipation coil; during the process of the high-temperature crude oil flowing from the bottom layer of the heat dissipation coil to the top layer of the heat dissipation coil, each group of air-cooling assemblies conducts air-cooling heat exchange to achieve gradient cooling of the high-temperature crude oil: when each group of eddy current fans operates, the cooling air is inhaled from outside the spiral air inlet, and the formed eddy current cooling air can pass between the outer surface of the flow velocity column and the inner wall of the heat dissipation cylinder, which can greatly increase the flow velocity of the cooling air and fully conduct air-cooling heat dissipation on the heat dissipation coil. At the same time, the outlet thermometer can monitor the temperature of the outlet crude oil in real time and feedback data to the explosion-proof temperature control box, and the explosion-proof temperature control box timely controls the opening and closing of several eddy current fans, thereby realizing automatic temperature reduction. This device has the advantages of environmental protection, practicality, high efficiency and convenient maintenance. Description of the Drawings

[0026] Figure 1 Schematic structural diagram of an automatic air-cooled gradient cooling device for a submersible electric pump well provided by the present utility model;

[0027] Figure 2 An automatic air-cooled gradient cooling device for a submersible electric pump well provided by the present utility model Figure 1 Partial structural diagram at position A in;

[0028] Figure 3 Schematic sectional structural diagram of an automatic air-cooled gradient cooling device for a submersible electric pump well provided by the present utility model;

[0029] Figure 4 Schematic structural diagram of a fixing component of an automatic air-cooled gradient cooling device for a submersible electric pump well provided by the present utility model.

[0030] 1. Base; 2. Lifting lug; 3. Support; 4. Liquid inlet pipeline; 5. Clamp head; 6. Connecting pipeline; 7. Air inlet; 8. Rib plate; 9. Heat dissipation cylinder; 10. Heat dissipation coil; 11. Liquid outlet pipeline; 12. Eddy current fan; 13. Flow velocity column; 14. Explosion-proof temperature control box. Detailed implementation manners

[0031] To make the objectives, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0033] It should also be noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as limitations on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0035] In a first aspect, please refer to Figures 1 - 4 , a submersible electric pump well automatic air-cooled gradient cooling device, comprising a base 1, on which a support 3 is provided; a plurality of heat dissipation cylinders 9 are stacked in groups of two on the base 1 to form multiple layers, and each layer is fixed by the support 3; a heat dissipation coil is spirally arranged in the heat dissipation cylinder 9 and is connected through a plurality of heat dissipation cylinders 9. The port of the heat dissipation coil at the bottom is the inlet, and the port at the top is the outlet; a flow velocity column 13 is arranged in the spiral part of the heat dissipation coil in the heat dissipation cylinder 9; an air-cooling assembly is arranged at the end of the heat dissipation cylinder 9.

[0036] In this embodiment, since the heat dissipation cylinders 9 are distributed in multiple layers, correspondingly, the heat dissipation coils 10 are also distributed in multiple layers. Since the heat dissipation coils 10 are thicker in diameter than the liquid inlet pipeline 4, the crude oil flows through the heat dissipation coils at the bottom layer and then to the heat dissipation coils at the top layer. During this process, the air-cooling assembly also performs air-cooled heat exchange, thereby reducing the flow velocity of the high-temperature crude oil and achieving gradient cooling.

[0037] Among them, please refer to Figures 1 - 4 , the base 1 adopts a structure of a Japanese character-shaped groove steel, and a plurality of lifting lugs 2 are further provided on the base 1 for convenient hoisting; in addition, the flow velocity column 13 is an overall cylindrical shell with tapered ends at both ends, which is sleeved outside the heat dissipation coil. Through the flow velocity column 13, the air can be guided from the inlet to the inner edge part of the heat dissipation cylinder 9 to perform air-cooled heat dissipation on the heat dissipation coil 10 and increase the air flow velocity.

[0038] It should be noted that in the embodiment of the present utility model, 6 heat dissipation cylinders 9 are selected, with 2 cylinders in each layer, and the outer diameter of the heat dissipation cylinder 9 is 1.1 m and the length is 6 m.

[0039] In this embodiment, please refer to Figures 1 - 4 , the air-cooling assembly includes an air inlet 7 and a vortex fan 12; the air inlet 7 is arranged at one end of the heat dissipation cylinder 9; the vortex fan 12 is arranged at the other end of the heat dissipation cylinder 9; in addition, the air inlet 7 is connected to one end of the heat dissipation cylinder 9, and the air inlet 7 is circumferentially enclosed by a plurality of spiral fan blades to ensure the air intake volume and form a vortex; when the vortex fan 12 operates, the cooling air is sucked from outside the spiral air inlet 7, increasing the wind speed, replacing the hot air in the heat dissipation coil cylinder, and leaving from the vortex fan 12, thereby achieving the purpose of heat exchange and cooling.

[0040] In this embodiment, please refer to Figure 3, one end of the inlet of the heat dissipation coil 10 is provided with a liquid inlet pipeline 4, and one end of the outlet is provided with a liquid outlet pipeline 11. The heat dissipation coil 10 is arranged in the heat dissipation cylinder 9, and the connecting pipeline 6 is used to connect the heat dissipation coils 10 in the heat dissipation cylinder 9 between two by two; wherein, the liquid inlet pipeline 4 and the heat dissipation coil 10 are connected by a clamp head 5, and the liquid outlet pipeline 11 and the heat dissipation coil 10 are connected by a clamp head 5.

[0041] It should be noted that, in the embodiment of the present invention, the outer diameter of the heat dissipation coil 10 itself is 88.9 mm, and the inner diameter is 76 mm. After processing, it is a spiral shape with an outer diameter of 1.08 m, a pitch of 189 mm, and a length of 6 m, so as to be loaded on the inner wall of the heat dissipation cylinder 9, lengthening the flow path of the crude oil and realizing efficient heat dissipation.

[0042] In addition, an explosion-proof temperature control box 14 is also provided. The explosion-proof temperature control box 14 is electrically connected to the air-cooling component, and a thermometer is installed at the end of the liquid outlet pipeline 11 to feed back temperature data to the temperature control box in real time. According to the set temperature, the temperature of the crude oil outlet can be detected and the eddy current fan 12 can be automatically started or shut down.

[0043] In this embodiment, please refer to Figure 3 and Figure 4 , a plurality of rib plates 8 are also provided on the inner wall of the heat dissipation cylinder 9. The heat dissipation pipeline is fixed to the inner wall of the heat dissipation cylinder 9 through the rib plates 8. The rib plates 8 are cuboids with a size of 5*5 mm and a length of 6 meters, so as to facilitate the fixation of the heat dissipation pipeline.

[0044] Specifically, when the present invention is specifically implemented, it includes the following steps:

[0045] 1. Installation: Transport the device to the production site, select a suitable site for hoisting and placement, master the local seasonal wind direction, and place the air intake vent 7 at the upwind; connect the crude oil inlet pipeline 4 and the liquid outlet pipeline 11 of the submersible electric pump well; connect the eddy current fan 12, the explosion-proof temperature control box 14 and the thermometer sensor to electricity.

[0046] 2. Use: Start the explosion-proof temperature control box 14, and the thermometer installed on the liquid outlet pipeline 11 feeds back data to the explosion-proof temperature control box 14. If the temperature is greater than 65 degrees Celsius, the explosion-proof temperature control box 14 will start all the eddy current fans 12. Debug the explosion-proof temperature control box 14 according to the on-site production needs to master the best configuration: how many eddy current fans 12 can achieve the best cooling effect, and then shut down the redundant eddy current fans 12.

[0047] The technical solution adopted by the present invention has the following beneficial effects during use:

[0048] 1. Environmental protection: When the device operates, except for the eddy current fan 12 using electric energy, no other substances are required and no pollutants will be generated.

[0049] 2. Easy to maintain: After the first hoisting and pipeline connection, the operators only need to regularly inspect whether the equipment is abnormal.

[0050] Practical and efficient: The high-temperature crude oil is automatically cooled by this device and finally reaches the rated working temperature of the lined pipe oil pipeline, greatly solving the on-site problems.

[0051] After considering the specification and practicing the disclosed solutions herein, those skilled in the art will readily conceive of other embodiments of the present invention. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed in this disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the claims.

Claims

1. An automatic air-cooled gradient temperature reduction device for a submersible electric pump well, characterized in that, Comprising: A base (1) with a support (3) provided thereon; A plurality of heat dissipation cylinders (9), stacked in groups of two on the base (1) to form multiple layers, and fixed between each layer by the support (3); A heat dissipation coil (10), spirally arranged inside the heat dissipation cylinder (9) and communicating through a plurality of heat dissipation cylinders (9). The port at the bottom of the heat dissipation coil (10) is the inlet, and the port at the top is the outlet; A flow velocity column (13), arranged inside the spiral part of the heat dissipation coil (10) in the heat dissipation cylinder (9); An air-cooling assembly, arranged at the end of the heat dissipation cylinder (9).

2. The automated air-cooled gradient temperature reduction device for a submersible electric pump well according to claim 1, wherein, The air-cooling assembly includes: An air inlet (7), arranged at one end of the heat dissipation cylinder (9); A vortex fan (12), arranged at the other end of the heat dissipation cylinder (9).

3. The automated air-cooled gradient temperature reduction device for a submersible electric pump well according to claim 2, wherein The air inlet (7) is rotatably connected to one end of the heat dissipation cylinder (9), and the air inlet (7) is circumferentially enclosed by a plurality of fan blades.

4. The automated air-cooled gradient temperature reduction device for a submersible electric pump well according to claim 1, characterized in that, One end of the inlet pipeline (4) is provided at the inlet of the heat dissipation coil (10), and one end of the outlet pipeline (11) is provided at the outlet of the heat dissipation coil (10). The heat dissipation coil (10) is arranged inside the heat dissipation cylinder (9), and a connecting pipeline (6) is used to connect the heat dissipation coils (10) in the heat dissipation cylinders (9) pairwise.

5. The submersible electric pump well automatic air-cooled gradient temperature reduction device according to claim 4, characterized in that The inlet pipeline (4) and the heat dissipation coil (10) are connected by a clamp head (5), and the outlet pipeline (11) and the heat dissipation coil (10) are also connected by a clamp head (5).

6. The automated air-cooled gradient temperature reduction device for a submersible electric pump well according to claim 1 or 4, wherein It further includes an explosion-proof temperature control box (14), which is electrically connected to the air-cooling assembly, and a thermometer is installed at the end of the outlet pipeline (11) to feedback temperature data to the temperature control box in real time.

7. The automated air-cooled gradient temperature reduction device for a submersible electric pump well according to claim 1, wherein A plurality of rib plates (8) are further provided on the inner wall of the heat dissipation cylinder (9), and the heat dissipation pipeline is fixed to the inner wall of the heat dissipation cylinder (9) by the rib plates (8).

8. The submersible electric pump well automatic air-cooled gradient temperature reduction device according to claim 1, wherein, The base (1) adopts a structure of a "ri" shaped groove steel, and a plurality of lifting lugs (2) are further provided on the base (1).

Images