Wellhead crude oil anti-freezing and anti-condensation constant temperature heating device

Abstract

This utility model discloses a wellhead crude oil heating and temperature control device for preventing freezing and condensation, specifically relating to the field of wellhead crude oil heating. It includes a base plate, a heating component fixedly connected to the middle of the upper part of the base plate, a filter component fixedly connected to the upper surface of the inner surface of the heating component, a stirring component rotatably connected to the lower side of the heating component, and a feed pipe fixedly connected to the upper end of the heating component. The heating component includes a double-layer heating tank fixedly connected to the upper part of the base plate. This utility model, through its designed heating component, can maintain a constant temperature for wellhead crude oil via the heating tank. Simultaneously, a guide plate controls the flow rate of the wellhead crude oil, preventing excessive flow rate from causing damage to the next stage component and delaying the residence time of the wellhead crude oil in the double-layer heating tank. This allows the crude oil to more fully absorb heat from the double-layer tank, improving heating uniformity and enhancing the antifreeze and anti-condensation effect.

Description

Technical Field

[0001] This utility model relates to the field of wellhead crude oil heating, and in particular to a wellhead crude oil heat tracing and constant temperature heating device that is antifreeze and anti-condensation. Background Technology

[0002] Crude oil is a complex mixture containing components such as wax, asphalt, and gum. Its fluidity is extremely sensitive to temperature. When the temperature is below the wax precipitation point of crude oil, wax crystals will gradually precipitate and aggregate, causing the viscosity of crude oil to rise sharply. If the temperature drops further to the freezing point, crude oil will lose its fluidity and form a solid or semi-solid state.

[0003] In low-temperature environments such as high latitudes, deep seas, or plateaus, crude oil produced from wellheads experiences a rapid temperature drop after flowing out of the formation due to rapid heat dissipation, making it highly susceptible to wax blockage and pipe solidification. Blockage of wellhead pipelines can lead to production interruptions or even require production shutdowns and pipe cleaning. If the solidification is severe, it can also damage wellhead equipment and cause safety hazards. Therefore, it is necessary to perform constant temperature heating. By optimizing the heating method, temperature control logic, and structural design, the problems of wax blockage and pipe solidification of crude oil at the wellhead can be solved. Utility Model Content

[0004] The main objective of this invention is to provide a wellhead crude oil heat tracing and constant temperature heating device that is antifreeze and anti-condensation, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A wellhead crude oil heating and temperature control device for preventing freezing and condensation includes a base plate. A heating component is fixedly connected to the middle of the upper part of the base plate. A filter component is fixedly connected to the upper side of the inner surface of the heating component. A stirring component is rotatably connected to the lower side of the heating component. A feed pipe is fixedly connected to the upper end of the heating component. The heating component includes a double-layer heating tank fixedly connected to the upper part of the base plate. A water inlet is opened on the upper side of the double-layer heating tank. A water outlet is opened on the lower side of the double-layer heating tank. A discharge port is fixedly connected to the lower side of one end of the double-layer heating tank. A guide plate is fixedly connected to the upper side of the inner surface of the double-layer heating tank.

[0007] Preferably, the two guide vanes are symmetrically arranged, and the two guide vanes are staggered in the vertical direction. Each of the two guide vanes has a number of barrier strips fixedly connected to its upper end.

[0008] Preferably, the filter assembly includes a support plate fixedly connected to the upper side of the inner surface of the double-layer heating tank. A rectangular opening is provided in the middle of the support plate. Springs are fixedly connected to the four corners of the upper end of the support plate. A filter plate is fixedly connected to the upper end of the four springs. Several rotating wheels are rotatably connected to the lower end of the filter plate. A rotating shaft is rotatably connected to the inner surface of the support plate. Several cams are fixedly connected to the outer surface of the rotating shaft.

[0009] Preferably, all of the cams are in contact with the outer surface of one of the adjacent wheels.

[0010] Preferably, the stirring assembly includes a support fixedly connected to one side of the upper end of the base plate, a motor fixedly connected to the upper end of the support, a stirring shaft rotatably connected to the lower side of the inner surface of the double-layer heating tank, a plurality of blades arranged in a ring array fixedly connected to the outer surface of the stirring shaft, a pulley assembly rotatably connected to one end of the double-layer heating tank, the output of the motor being fixedly connected to the pulley assembly via a coupling, each of the blades having a plurality of round holes arranged in a rectangular array, and one end of the stirring shaft penetrating the double-layer heating tank and being fixedly connected to the pulley assembly.

[0011] Preferably, one end of the rotating shaft passes through the double-layer heating tank and is fixedly connected to the pulley assembly.

[0012] Preferably, the feed pipe communicates with the inner cavity of the double-layer heating tank.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This device, through its designed heating components, can maintain a constant temperature for wellhead crude oil via a double-layer heating tank. Simultaneously, the flow rate of the crude oil at the wellhead can be controlled by the guide plate, preventing excessive flow rate from causing damage to the next stage components and delaying the residence time of the crude oil within the double-layer heating tank. This allows the crude oil to more fully absorb the heat from the double-layer tank, avoiding localized insufficient heating caused by excessive flow rate, improving heating uniformity, and enhancing antifreeze and anti-condensation effects.

[0015] 2. This device, through its designed filter components, can filter crude oil at the wellhead, preventing impurities from clogging the pipeline and reducing pipeline and equipment failures. The designed stirring components can stir the crude oil at the wellhead on the lower side of the double-layer heating tank, preventing it from settling to the bottom, thereby improving heating efficiency and reducing energy waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the heating component of this utility model;

[0019] Figure 4 This is an exploded view of the filter assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the stirring assembly structure of this utility model.

[0021] In the diagram: 1. Base plate; 2. Heating assembly; 21. Double-layer heating tank; 22. Water inlet; 23. Discharge outlet; 24. Guide plate; 25. Barrier strip; 3. Filter assembly; 31. Support plate; 32. Rectangular opening; 33. Spring; 34. Filter plate; 35. Rotary wheel; 36. Rotating shaft; 37. Cam; 4. Stirring assembly; 41. Support; 42. Motor; 43. Stirring shaft; 44. Blade; 45. Pulley assembly; 46. Round hole; 5. Feed pipe. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Example 1

[0024] like Figures 1-3 As shown, a wellhead crude oil heat tracing and constant temperature heating device for preventing freezing and condensation includes a base plate 1, a heating component 2 fixedly connected to the middle of the upper end of the base plate 1, a filter component 3 fixedly connected to the upper side of the inner surface of the heating component 2, a stirring component 4 rotatably connected to the lower side of the heating component 2, and a feed pipe 5 fixedly connected to the upper end of the heating component 2.

[0025] Heating assembly 2 includes a double-layer heating tank 21 fixedly connected to the upper end of the base plate 1, and the feed pipe 5 communicates with the inner cavity of the double-layer heating tank 21;

[0026] The double-layer heating tank 21 has an inlet 22 on the upper side and an outlet on the lower side. A discharge port 23 is fixedly connected to the lower side of one end of the double-layer heating tank 21, and a guide plate 24 is fixedly connected to the upper side of the inner surface of the double-layer heating tank 21.

[0027] Specifically, the two guide vanes 24 are symmetrically arranged and staggered in the vertical direction. Several baffle strips 25 are fixedly connected to the upper end of each guide vane 24.

[0028] In this embodiment, crude oil from the wellhead is pumped out by the pump body and then transported to the inside of the double-layer heating tank 21 through the feed pipe 5.

[0029] After the wellhead crude oil enters the double-layer heating tank 21, it first flows to the upper side of the guide plate 24. Both guide plates 24 are inclined towards the middle of the double-layer heating tank 21. The wellhead crude oil flows down the slope of the guide plate 24. The baffle strip 25 can reduce the flow rate of the wellhead crude oil.

[0030] At the same time, several barrier strips 25 are also tilted toward the middle of the double-layer heating tank 21 to prevent crude oil from accumulating on the upper side of the barrier strips 25.

[0031] like Figure 4 As shown, the filter assembly 3 includes a support plate 31 fixedly connected to the upper side of the inner surface of the double-layer heating tank 21. A rectangular opening 32 is provided in the middle of the support plate 31. Springs 33 are fixedly connected to the four corners of the upper end of the support plate 31. A filter plate 34 is fixedly connected to the upper end of the four springs 33. Several rotating wheels 35 are rotatably connected to the lower end of the filter plate 34. A rotating shaft 36 is rotatably connected to the inner surface of the support plate 31. Several cams 37 are fixedly connected to the outer surface of the rotating shaft 36.

[0032] Furthermore, several cams 37 are in contact with the outer surface of a wheel 35 that is close to each other.

[0033] The crude oil at the wellhead flows through the guide plate 24 to the upper side of the filter plate 34, where it is filtered. The motor 42 drives the pulley group 45 to rotate, which in turn drives the rotating shaft 36 to rotate. The rotating shaft 36 drives the cam 37 to rotate. When the cam 37 rotates, it pushes the rotating wheel 35 to move repeatedly in the vertical direction. This, together with the spring 33, causes the filter plate 34 to vibrate back and forth, thus accelerating the filtration of the crude oil at the wellhead.

[0034] Example 2

[0035] Based on Embodiment 1, in this embodiment, the stirring component 4 can stir the crude oil at the wellhead on the lower side of the double-layer heating tank 21 to prevent it from settling to the bottom, thereby improving heating efficiency and reducing energy waste.

[0036] like Figure 5 As shown, the stirring assembly 4 includes a support 41 fixedly connected to one side of the upper end of the base plate 1. A motor 42 is fixedly connected to the upper end of the support 41. A stirring shaft 43 is rotatably connected to the lower side of the inner surface of the double-layer heating tank 21. Several blades 44 arranged in a ring array are fixedly connected to the outer surface of the stirring shaft 43. A pulley group 45 is rotatably connected to one end of the double-layer heating tank 21. The output of the motor 42 is fixedly connected to the pulley group 45 through a coupling.

[0037] Several blades 44 are provided with several round holes 46 arranged in a rectangular array, and one end of the stirring shaft 43 passes through the double-layer heating tank 21 and is fixedly connected to the pulley group 45.

[0038] Wellhead crude oil, especially heavy oil and high wax content crude oil, usually has a high viscosity. When stirring, the blades push the crude oil to flow, which will generate a large resistance. The round hole 46 on the blade 44 can allow some crude oil to pass through the hole, disperse the pressure on the front of the blade, reduce stirring resistance, reduce energy consumption, and the round hole 46 can buffer the intensity of turbulence, making the stirring more gentle and reducing the impact and wear on the equipment.

[0039] Furthermore, fibrous impurities that may be mixed into the crude oil at the wellhead, such as fragments of wellhead sealing material, fiber cloth left over from downhole operations, or long strips of rock cuttings, can easily become entangled on the blade 44 or stuck between the blade 44 and the bottom wall of the inner surface of the double-layer heating tank 21, causing the stirring motor to overload and shut down.

[0040] The circular hole 46 allows small impurities to pass through, while large impurities are less likely to directly impact the blade 44 due to the flow diversion and buffering effect of the circular hole, reducing the probability of jamming. Specifically, one end of the rotating shaft 36 passes through the double-layer heating tank 21 and is fixedly connected to the pulley assembly 45.

[0041] In this embodiment, the filtered wellhead crude oil flows through the gaps in the filter plate 34 to the bottom wall of the inner surface of the double-layer heating tank 21. The pulley group 45 drives the stirring shaft 43 to rotate, and the stirring shaft 43 drives the blades 44 to rotate, stirring the wellhead crude oil and preventing it from settling to the bottom. During the stirring process, the wellhead crude oil will pass through the round holes 46. Several round holes 46 can reduce the stirring resistance and improve the stirring efficiency. After the stirring is completed, the heated wellhead crude oil can be discharged through the discharge port 23.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wellhead crude oil heating and temperature control device for preventing freezing and condensation, comprising a base plate (1), characterized in that: A heating assembly (2) is fixedly connected to the middle of the upper end of the base plate (1). A filter assembly (3) is fixedly connected to the upper side of the inner surface of the heating assembly (2). A stirring assembly (4) is rotatably connected to the lower side of the heating assembly (2). A feed pipe (5) is fixedly connected to the upper end of the heating assembly (2). The heating assembly (2) includes a double-layer heating tank (21) fixedly connected to the upper end of the base plate (1). A water inlet (22) is opened on the upper side of the double-layer heating tank (21). A water outlet is opened on the lower side of the double-layer heating tank (21). A discharge port (23) is fixedly connected to the lower side of one end of the double-layer heating tank (21). A guide plate (24) is fixedly connected to the upper side of the inner surface of the double-layer heating tank (21).

2. The wellhead crude oil heat tracing and constant temperature heating device for antifreeze and anti-condensation as described in claim 1, characterized in that: The two guide plates (24) are symmetrically arranged and staggered in the vertical direction. Several barrier strips (25) are fixedly connected to the upper end of each of the two guide plates (24).

3. The wellhead crude oil heat tracing and constant temperature heating device for antifreeze and anti-condensation as described in claim 2, characterized in that: The filter assembly (3) includes a support plate (31) fixedly connected to the upper side of the inner surface of the double-layer heating tank (21). A rectangular opening (32) is provided in the middle of the support plate (31). Springs (33) are fixedly connected to the four corners of the upper end of the support plate (31). A filter plate (34) is fixedly connected to the upper end of the four springs (33). Several rotating wheels (35) are rotatably connected to the lower end of the filter plate (34). A rotating shaft (36) is rotatably connected to the inner surface of the support plate (31). Several cams (37) are fixedly connected to the outer surface of the rotating shaft (36).

4. The wellhead crude oil heat tracing and constant temperature heating device for antifreeze and anti-condensation as described in claim 3, characterized in that: Several of the cams (37) are in contact with the outer surface of one of the rollers (35) that are close to each other.

5. The wellhead crude oil heat tracing and constant temperature heating device for antifreeze and anti-condensation as described in claim 3, characterized in that: The stirring assembly (4) includes a support (41) fixedly connected to one side of the upper end of the base plate (1). A motor (42) is fixedly connected to the upper end of the support (41). A stirring shaft (43) is rotatably connected to the lower side of the inner surface of the double-layer heating tank (21). Several blades (44) arranged in a ring array are fixedly connected to the outer surface of the stirring shaft (43). A pulley group (45) is rotatably connected to one end of the double-layer heating tank (21). The output of the motor (42) is fixedly connected to the pulley group (45) through a coupling. Several blades (44) are provided with several round holes (46) arranged in a rectangular array. One end of the stirring shaft (43) passes through the double-layer heating tank (21) and is fixedly connected to the pulley group (45).

6. The wellhead crude oil heat tracing and constant temperature heating device for antifreeze and anti-condensation as described in claim 5, characterized in that: One end of the rotating shaft (36) passes through the double-layer heating tank (21) and is fixedly connected to the pulley group (45).

7. The wellhead crude oil heat tracing and constant temperature heating device for antifreeze and anti-condensation as described in claim 1, characterized in that: The feed pipe (5) is connected to the inner cavity of the double-layer heating tank (21).

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