A cooling device

Abstract

The present application relates to the technical field of petroleum production equipment, in particular to a cooling device, which is used for cooling petroleum pipeline and comprises a shell, a spiral pipe, a rotating driving mechanism and a cooling water circulating mechanism, the shell has a cavity inside, and the spiral pipe is vertically arranged in the cavity; one end of the spiral pipe is provided with a first pipe body, the other end of the spiral pipe is provided with a second pipe body, the first pipe body and the second pipe body are coaxially arranged, petroleum flows through the spiral pipe and the second pipe body in sequence from the first pipe body, and a spoiler structure is arranged on the first pipe body and the second pipe body. The cooling water in the upper and lower parts is relatively flowed and fully mixed, the uniformity of the water temperature of the cooling water in the shell is ensured, the temperature difference of the cooling water is small, and the cooling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of petroleum production equipment technology, and more specifically to a cooling device. Background Technology

[0002] Petroleum products mainly include various fuel oils and lubricating oils, as well as liquefied petroleum gas, petroleum coke, paraffin wax, and asphalt. The processing of these products is often referred to as petroleum refining. Petrochemical products are obtained through further chemical processing of the feedstock oil provided by the refining process, and cooling is an indispensable part of petrochemical processing.

[0003] Existing petroleum processing cooling devices mainly include a tank, a spiral or coiled petroleum pipeline installed inside the tank, a cooling water injection device, and a water outlet pipe. The cooling water injection device injects cooling water into the tank to cool the petroleum in the petroleum pipeline.

[0004] However, in the aforementioned cooling water injection devices, the inlet and outlet pipes are generally at different heights. That is, some inject cooling water from the bottom of the tank and exit from the top, while others inject water from the top and exit from the bottom. This results in poor uniformity of the cooling water temperature inside the tank, with a significant temperature difference between the cooling water at the top and bottom of the tank, leading to a mediocre cooling effect. Summary of the Invention

[0005] (I) The problem to be solved by the present invention is that in traditional cooling water injection devices, the injection port and the outlet pipe are generally at different heights, resulting in poor uniformity of cooling water temperature inside the tank. The cooling water temperature in the upper part of the tank and the cooling water temperature in the lower part of the tank are significantly different, resulting in a mediocre cooling effect.

[0006] (II) Technical Solution

[0007] A cooling device for cooling oil pipelines includes a housing, a spiral tube, a rotary drive mechanism, and a cooling water circulation mechanism. The housing has an internal cavity, and the spiral tube is vertically arranged in the cavity.

[0008] One end of the spiral tube is provided with a first tube body, and the other end of the spiral tube is provided with a second tube body. The first tube body and the second tube body are coaxially arranged. Oil flows from the first tube body through the spiral tube and the second tube body in sequence. A flow-turbing structure is installed on both the first tube body and the second tube body.

[0009] The rotary drive mechanism drives the spiral tube to rotate around the axis of the first tube body;

[0010] The cooling water circulation mechanism injects cooling water from the bottom of the housing while simultaneously drawing cooling water from the top of the housing.

[0011] According to one embodiment of the present invention, the turbulence-disrupting structure on the first tube body is higher than the spiral tube, and the turbulence-disrupting structure on the second tube body is lower than the spiral tube, and the two turbulence-disrupting structures are arranged in opposite directions.

[0012] According to one embodiment of the present invention, the inner surface of the spiral tube is provided with a plurality of inner fins, and the outer surface of the spiral tube is provided with a plurality of outer fins.

[0013] According to one embodiment of the present invention, the first tube passes through the top of the housing, and the second tube passes through the bottom of the housing;

[0014] The rotary drive mechanism includes a first gear, a second gear, and a motor. The second gear is fixed to the first tube, and the first gear is fixed to the output end of the motor. The first gear and the second gear mesh with each other.

[0015] According to one embodiment of the present invention, an oil inlet pipe is rotatably installed at one end of the first pipe body via a rotary joint, and an oil outlet pipe is rotatably installed at one end of the second pipe body via a rotary joint.

[0016] According to one embodiment of the present invention, the top and bottom of the housing are respectively provided with through holes, the two through holes are coaxially arranged, and a sealed bearing is installed in each of the through holes. The first tube and the second tube are rotatably installed in the sealed bearing.

[0017] According to one embodiment of the present invention, the cooling water circulation mechanism includes a cooling water circulator, an inlet pipe, and a return pipe. One end of the inlet pipe is connected to the bottom outer wall of the housing and communicates with the cavity. The other end of the inlet pipe is connected to the outlet of the cooling water circulator. One end of the return pipe is connected to the top outer wall of the housing and communicates with the cavity. The other end of the return pipe is connected to the inlet of the cooling water circulator.

[0018] According to one embodiment of the present invention, a bearing seat is provided on the top outer wall of the housing, and a support seat is provided on the first tube body, wherein the support seat and the bearing seat are coaxially arranged;

[0019] The top of the support seat has an annular groove in which multiple steel balls roll, and the bottom of the support seat has a groove for the annular steel balls.

[0020] According to one embodiment of the present invention, a fixing plate is coaxially provided on the oil outlet pipe, and a plurality of rods are connected between the fixing plate and the bottom outer wall of the housing.

[0021] According to one embodiment of the present invention, the device further includes a plurality of temperature sensors and a controller, wherein the plurality of temperature sensors are sequentially installed in the inner wall of the housing, and the controller is electrically connected to the temperature sensors.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a cooling device for cooling oil pipelines, comprising a shell, a spiral tube, a rotary drive mechanism, and a cooling water circulation mechanism. The shell has an internal cavity, in which the spiral tube is vertically arranged. One end of the spiral tube is provided with a first tube body, and the other end of the spiral tube is provided with a second tube body. The first and second tube bodies are coaxially arranged, and oil flows sequentially from the first tube body through the spiral tube and the second tube body. Both the first and second tube bodies are equipped with a flow-turbing structure. The rotary drive mechanism drives the spiral tube to rotate around the axis of the first tube body. The cooling water circulation mechanism injects cooling water from the bottom of the shell while simultaneously drawing cooling water from the top of the shell.

[0024] By adding two turbulence structures, with the two propeller-shaped turbulence structures arranged in opposite directions, as the spiral tube rotates, the top turbulence structure disturbs the water in the upper part of the shell to flow downwards, while the bottom turbulence mechanism disturbs the water in the lower part of the shell to flow upwards. This allows the cooling water in the upper and lower parts to flow relative to each other and mix thoroughly, ensuring the uniformity of the cooling water temperature inside the shell, reducing the temperature difference of the cooling water, and improving the cooling effect. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 Structural diagrams provided for embodiments of the present invention;

[0027] Figure 2 A connection diagram of the spiral tube, outer fins and inner fins provided in an embodiment of the present invention;

[0028] Figure 3 Provided for embodiments of the present invention Figure 1 Enlarged view of part of the image.

[0029] Icons: 1-Shell; 2-Motor; 3-First gear; 4-Second gear; 5-First tube; 6-Rotary joint; 7-Oil inlet pipe; 8-Return pipe; 9-Breakthrough structure; 10-Leg; 11-Oil outlet pipe; 12-Spiral tube; 13-Outer fin; 14-Water inlet pipe; 15-Cooling water circulator; 16-Inner fin; 17-Fixing plate; 18-Rod; 19-Bearing seat; 20-Support seat. Detailed Implementation

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1-3 As shown, one embodiment of the present invention provides a cooling device for cooling oil pipelines, including a housing 1, a spiral tube 12, a rotary drive mechanism and a cooling water circulation mechanism. The housing 1 has a cavity inside, and the spiral tube 12 is vertically arranged in the cavity. Specifically, the housing 1 is cylindrical, and the spiral tube 12 is coaxially arranged with the housing.

[0032] The upper end of the spiral tube 12 is provided with a first tube body 5, and the lower end of the spiral tube 12 is provided with a second tube body. The first tube body 5 and the second tube body are coaxially arranged. The axis of the first tube body 5, the axis of the second tube body and the axis of the shell 1 are the same axis. Oil flows from the first tube body 5 into the spiral tube 12 and from the spiral tube 12 into the second tube body.

[0033] The rotary drive mechanism is installed on the top of the housing 1. The rotary drive mechanism is used to drive the spiral tube 12 to rotate around the axis of the first tube body 5. As the spiral tube 12 rotates continuously, the spiral tube 12 fully contacts the cooling water, thereby improving the cooling effect.

[0034] The cooling water circulation mechanism injects cooling water from the bottom of the housing 1 while simultaneously drawing cooling water from the top of the housing 1. When cooling the oil pipeline, the cooling water circulation mechanism continuously injects cooling water from the bottom of the housing 1 while continuously drawing cooling water from the top of the housing 1, ensuring continuous circulation of the cooling water and ensuring that the temperature of the cooling water remains at a low level.

[0035] In this embodiment, the top and bottom of the housing 1 are respectively provided with through holes, and the two through holes are coaxially arranged. A sealed bearing is installed in each through hole. The first tube 5 passes through the through hole at the top of the housing 1 and is rotatably connected to the sealed bearing. The lower end of the second tube passes through the through hole at the bottom of the housing 1 and is rotatably installed in the sealed bearing with a sealing ring. The first tube 5 and the second tube are both sealed and connected to the sealing ring, which achieves a good sealing effect and prevents cooling water from overflowing.

[0036] Preferred, such as Figure 1 As shown, a flow-disrupting structure 9 is installed on the first tube body 5. The flow-disrupting structure 9 is coaxially arranged with the first tube body 5 and located inside the shell 1. The flow-disrupting structure 9 on the first tube body 5 is higher than the spiral tube 12 to avoid interference between the flow-disrupting structure 9 and the spiral tube 12.

[0037] A flow-disrupting structure 9 is coaxially mounted on the second tube body. The flow-disrupting structure 9 on the second tube body is lower than the spiral tube 12 to avoid interference between the flow-disrupting structure 9 and the spiral tube 12.

[0038] Specifically, the turbulence structure 9 includes a ring body and multiple turbulence vanes. The turbulence vanes are curved blades located on the side of the ring body, forming a structure similar to a submarine propeller.

[0039] It should be noted that the arrangement direction of the turbulence structure 9 on the first pipe body 5 is different from that on the second pipe body. The two arrangement directions are opposite. The top turbulence structure 9 pushes the water flow at the top of the shell 1 towards the bottom, while the bottom turbulence structure 9 pushes the water flow at the bottom of the shell 1 from the bottom towards the top. This makes the water flow at the top and bottom of the shell 1 flow relative to each other, mixes thoroughly and evenly, improves the uniformity of the cooling water temperature, and makes the cooling water move more quickly and fully.

[0040] Since the cooling water is injected from the bottom of the shell 1, after cooling the oil in the spiral tube 12, the water temperature will gradually rise, resulting in the water temperature at the top of the shell 1 being higher than that at the bottom of the shell 1. This will reduce the cooling effect. However, by adding two turbulence structures 9, with the two propeller-shaped turbulence structures 9 arranged in opposite directions, as the spiral tube 12 rotates, the turbulence structure 9 at the top disturbs the water in the upper part of the shell 1 to flow downwards, while the turbulence structure 9 at the bottom disturbs the water in the lower part of the shell 1 to flow upwards. This allows the cooling water in the upper and lower parts to flow relative to each other and mix thoroughly, ensuring the uniformity of the cooling water temperature inside the shell 1 and improving the cooling effect.

[0041] Preferably, the rotary drive mechanism includes a first gear 3, a second gear 4, and a motor 2. The motor 2 is mounted on the top outer wall of the housing 1, with its output end facing upward. The second gear 4 is fixed to the first tube 5 and coaxially mounted with the first tube 5. The first gear 3 is fixed to the output end of the motor 2, and the first gear 3 and the second gear 4 mesh with each other.

[0042] In this way, motor 2 drives the first gear 3 to rotate, which in turn drives the second gear 4, the first tube 5, the spiral tube 12, and the second tube to rotate simultaneously, thereby driving the two turbulence structures 9 to rotate as well. The rotation drive mechanism drives the spiral tube 12 to rotate, so that the spiral tube 12 can fully contact the cooling water for heat exchange, thereby improving the cooling efficiency of the oil inside the spiral tube 12.

[0043] Preferred, such as Figure 2 As shown, multiple inner fins 16 are equidistantly arranged on the inner surface of the spiral tube 12, and multiple outer fins 13 are equidistantly arranged on the outer surface of the spiral tube 12. Both the inner fins 16 and the outer fins 13 are made of copper, which provides good heat dissipation. The heat exchange area between the spiral tube 12 and the cooling water can be increased through the outer fins 13 and the inner fins 16, thereby increasing the heat exchange efficiency of the spiral tube 12.

[0044] Optionally, the spiral tube 12 can also be made of copper, with the inner fin 16, outer fin 13 and spiral tube 12 integrally formed.

[0045] Preferably, five temperature sensors are installed at intervals from top to bottom on the inner wall of the housing 1. A controller is also installed on the housing 1, and the motor 2 and the temperature sensors are electrically connected to the controller.

[0046] The temperature sensor detects the temperature of the cooling water at different depths inside the housing 1 in real time and sends the signal to the controller. The controller can then observe the temperature of the cooling water at different depths inside the housing 1 in real time, which helps determine whether to increase the rotation frequency of the motor 2 and the frequency of the cooling water circulation machine 15 to accelerate the reduction of the cooling water temperature.

[0047] In this embodiment, an oil inlet pipe 7 is rotatably installed at the top of the first pipe body 5 via a rotary joint 6, and an oil outlet pipe 11 is rotatably installed at the bottom of the second pipe body via a rotary joint 6. An electric valve is also installed on the first pipe body 5 and the second pipe body. The electric valve is electrically connected to a controller, and the controller controls the opening and closing of the electric valve.

[0048] For example, when the oil temperature is very high and it is difficult to effectively reduce the temperature by relying solely on short-term cooling, the valve on the second pipe body can be closed first. After a period of time, the valve on the first pipe body 5 can be closed. In this way, the oil in the spiral tube 12 will not flow and can stay in the shell 1 for a period of time. After the set time has elapsed, the controller controls the electric valve on the second pipe body to open first. After the oil in the spiral tube 12 flows out, the electric valve on the second pipe body is closed again, and then the electric valve on the first pipe body 5 is opened. This process is repeated to cool the oil.

[0049] Preferred, such as Figure 3As shown, a bearing seat 19 is provided on the top outer wall of the shell 1. The bearing seat 19 is cylindrical, and a support seat 20 is provided on the first tube 5. The support seat 20 and the bearing seat 19 are coaxially arranged. An annular groove is formed on the top of the bearing seat 19, and multiple steel balls roll in the annular groove. The steel balls are confined within the annular groove and can roll within it. An annular steel ball groove matching the steel balls is formed on the bottom of the support seat 20, and part of the steel balls are embedded in the annular steel ball groove. The support seat 20 serves to suspend the spiral tube 12. At the same time, while the support seat 20 rotates, the friction between the support seat 20 and the bearing seat 19 is very small, and the rotation speed of the spiral tube 12 is not affected.

[0050] Preferred, such as Figure 1 As shown, a fixing plate 17 is coaxially provided on the oil outlet pipe 11. Six rods 18 are fixed between the fixing plate 17 and the bottom outer wall of the shell 1 by bolts. The fixing plate 17 and the rods 18 pull the oil outlet pipe 11, so that the oil outlet pipe 11 can stably support the spiral pipe 12 and improve the stability of the spiral pipe 12.

[0051] In this embodiment, the cooling water circulation mechanism includes a cooling water circulator 15, an inlet pipe 14, and a return pipe 8. One end of the inlet pipe 14 is connected to the bottom outer wall of the housing 1 and communicates with the cavity. The other end of the inlet pipe 14 is connected to the outlet of the cooling water circulator 15. One end of the return pipe 8 is connected to the top outer wall of the housing 1 and communicates with the cavity. The other end of the return pipe 8 is connected to the inlet of the cooling water circulator 15.

[0052] Optionally, four legs 10 are welded to the bottom edge of the housing 1. The four legs 10 include a support rod and a support foot welded to the bottom of the support rod.

[0053] When using this cooling device to cool oil in an oil pipeline, cooling water can be injected into the shell 1 in advance. When the water level rises to the top of the cavity, the cooling water circulator 15 draws the cooling water from the top through the return pipe 8. Thereafter, water is continuously injected from the bottom and pumped from the top. Then, the oil enters the first pipe body 5 from the oil inlet pipe 7 and gradually flows into the spiral tube 12. At the same time, the motor 2 is turned on to drive the spiral tube 12 to rotate. The two turbulence structures 9 rotate accordingly. The top turbulence structure 9 disturbs the water in the upper part of the shell 1 to flow downward, while the bottom turbulence structure 9 disturbs the water in the lower part of the shell 1 to flow upward. This allows the cooling water in the upper and lower parts to flow relative to each other and mix thoroughly, ensuring the uniformity of the cooling water temperature inside the shell 1 and improving the cooling effect. As the spiral tube 12 rotates, it fully contacts the cooling water for heat exchange, improving the cooling efficiency of the oil inside the spiral tube 12. Finally, the oil flows out from the oil outlet pipe 11.

[0054] In the description of this invention, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling device for cooling oil pipelines, characterized in that, It includes a housing (1), a spiral tube (12), a rotary drive mechanism and a cooling water circulation mechanism. The housing (1) has a cavity inside, and the spiral tube (12) is vertically arranged in the cavity. One end of the spiral tube (12) is provided with a first tube body (5), and the other end of the spiral tube (12) is provided with a second tube body. The first tube body (5) and the second tube body are coaxially arranged. Oil flows from the first tube body (5) through the spiral tube (12) and the second tube body in sequence. A turbulence structure (9) is installed on both the first tube body (5) and the second tube body. The rotary drive mechanism drives the spiral tube (12) to rotate around the axis of the first tube body (5); The cooling water circulation mechanism injects cooling water from the bottom of the housing (1) while simultaneously drawing cooling water from the top of the housing (1); The turbulence structure (9) on the first tube (5) is higher than the spiral tube (12), and the turbulence structure (9) on the second tube is lower than the spiral tube (12). The two turbulence structures (9) are arranged in opposite directions. The inner side of the spiral tube (12) is provided with a plurality of inner fins (16), and the outer side of the spiral tube (12) is provided with a plurality of outer fins (13). The first tube (5) passes through the top of the housing (1), and the second tube passes through the bottom of the housing (1); The rotary drive mechanism includes a first gear (3), a second gear (4) and a motor (2). The second gear (4) is fixed on the first tube (5), and the first gear (3) is fixed on the output end of the motor (2). The first gear (3) and the second gear (4) mesh with each other.

2. The cooling device according to claim 1, characterized in that, One end of the first pipe body (5) is rotatably fitted with an oil inlet pipe (7) via a rotary joint (6), and one end of the second pipe body is rotatably fitted with an oil outlet pipe (11) via a rotary joint (6).

3. The cooling device according to claim 1, characterized in that, The top and bottom of the housing (1) are respectively provided with through holes, and the two through holes are coaxially arranged. Each through hole is equipped with a sealed bearing, and the first tube (5) and the second tube are rotatably installed in the sealed bearing.

4. A cooling device according to claim 1, characterized in that, The cooling water circulation mechanism includes a cooling water circulator (15), an inlet pipe (14), and a return pipe (8). One end of the inlet pipe (14) is connected to the bottom outer wall of the housing (1) and communicates with the cavity. The other end of the inlet pipe (14) is connected to the outlet of the cooling water circulator (15). One end of the return pipe (8) is connected to the top outer wall of the housing (1) and communicates with the cavity. The other end of the return pipe (8) is connected to the inlet of the cooling water circulator (15).

5. A cooling device according to claim 2, characterized in that, The top outer wall of the shell (1) is provided with a bearing seat (19), and the first tube (5) is provided with a support seat (20). The support seat (20) and the bearing seat (19) are coaxially arranged. The top of the bearing seat (19) is provided with an annular groove, in which multiple steel balls roll. The bottom of the support seat (20) is provided with a groove for the annular steel balls.

6. A cooling device according to claim 2, characterized in that, A fixing plate (17) is coaxially provided on the oil outlet pipe (11), and multiple rods (18) are connected between the fixing plate (17) and the bottom outer wall of the shell (1).

7. A cooling device according to any one of claims 1-6, characterized in that, It also includes multiple temperature sensors and a controller, with the multiple temperature sensors sequentially installed in the inner wall of the housing (1), and the controller electrically connected to the temperature sensors.

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