Heating device for oil storage tank in oil field

Abstract

The utility model discloses a heating device for an oil storage tank in an oil field, which relates to the technical field of heating devices and comprises an oil storage tank body and a tank cover, telescopic cylinder bodies are fixed on two sides of an outer carrying frame, a top plate is fixed between telescopic ends of the two telescopic cylinder bodies, and a guide cylinder is fixed at the center of the bottom end of the top plate. A hollow supporting cylinder is fixed to the center of the interior of the outer carrying frame. The lower end of the guide cylinder penetrates through the hollow supporting cylinder and is fixedly provided with a piston disc. An outer sleeve is rotationally connected to the outer side of the hollow supporting cylinder and located on the inner side of the outer carrying frame, an inner bearing frame is fixed to the outer side of the outer sleeve, pushing and guiding bases are arranged on the inner sides of the two sides of the inner bearing frame, and an electric heating pipe body is fixed to the lower end of each pushing and guiding base. According to the heating device for the oil storage tank in the oil field, the inner wall and the outer wall of the oil storage tank body can be heated through the overall structural matching design, and oil stored in the oil storage tank body can be conveniently extruded to enable the whole oil to rapidly flow and repeatedly make contact with the inner wall of the oil storage tank body, so that efficient heating is achieved.

Description

Technical Field

[0001] This utility model relates to the field of heating device technology, and in particular to a heating device for oilfield storage tanks. Background Technology

[0002] Oil storage tanks are a common type of oil storage facility. Their bodies are usually made of corrosion-resistant and high-temperature-resistant metal materials. Large oil storage tanks are generally installed in the open air. When crude oil is stored in ordinary oil storage tanks at low temperatures, the viscosity increases and the fluidity becomes poor. To restore the fluidity of crude oil, the solution is to heat the oil storage tank.

[0003] For example, Chinese Patent 201610779965.4 discloses an oil storage tank and 201610794482.1 discloses an oil storage tank with a heating device, which directly installs an electric heater inside the tank. However, when the electric heating tube inside the tank is heated rapidly, the oil comes into direct contact with the high-temperature tube, which has an adverse effect on the quality of the oil. Furthermore, the oil conducts heat slowly through diffusion when it is not stirred, resulting in uneven heating. Therefore, this application proposes a heating device for oilfield storage tanks. Utility Model Content

[0004] Based on this, it is necessary to provide an oilfield storage tank heating device to address the aforementioned technical problems. Through the overall structural design, two electric heating tubes can be driven to rotate around a hollow support cylinder on the outside of the storage tank body. This allows the electric heating tubes to heat the inner and outer walls of the storage tank body without direct contact with the oil. Furthermore, by driving the top plate to move up and down, the guide cylinder and piston disc are controlled to move inside the storage tank body, facilitating the compression of the oil stored in the tank body, causing it to flow rapidly and repeatedly contact the inner wall of the storage tank body for efficient heating. This effectively improves heat transfer efficiency and makes the heating more uniform.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A heating device for oilfield storage tanks, which is used for heating the oil in oilfield storage tanks;

[0007] The system includes an oil storage tank body and a tank cover. An external support frame is provided on the outside of the oil storage tank body and the tank cover. Telescopic cylinders are fixed on both sides of the external support frame. A top plate is fixed between the telescopic ends of the two telescopic cylinders. A guide cylinder is fixed at the center of the bottom end of the top plate. A hollow support cylinder is fixed at the center of the inside of the external support frame. The lower end of the guide cylinder passes through the hollow support cylinder and is fixed with a piston disc. The guide cylinder and the hollow support cylinder are slidably connected.

[0008] An outer sleeve is rotatably connected to the outside of the hollow support cylinder and inside the outer support frame. An inner support frame is fixed to the outside of the outer sleeve. A drive assembly is provided between the inner support frame and the hollow support cylinder. A pusher seat is provided on the inner side of both sides of the inner support frame. An electric heating tube is fixed to the lower end of each pusher seat. Both electric heating tubes are located outside the oil storage tank body and are in contact with the oil storage tank body.

[0009] As a preferred embodiment of the oilfield storage tank heating device provided by this utility model, the drive assembly includes a first flat gear. The first flat gear is fixed on the outer side of the hollow support cylinder and at the upper end of the outer sleeve. A second motor is fixed on the upper end of the inner support frame and on the outer side of the first flat gear. The output end of the second motor is fixed with a second flat gear. The second flat gear meshes with the first flat gear.

[0010] In a preferred embodiment of the oilfield storage tank heating device provided by this utility model, a bidirectional screw is rotatably connected to one end of the inner support frame. Two pusher seats are respectively located on the outer sides of the bidirectional screw and threadedly connected to the bidirectional screw. A third bevel gear is fixed on the outer side of the bidirectional screw and inside the inner support frame. A third motor is fixed inside the inner support frame and outside the third bevel gear. A fourth bevel gear is fixed at the output end of the third motor. The fourth bevel gear meshes with the third bevel gear.

[0011] In a preferred embodiment of the oilfield storage tank heating device provided by this utility model, a guide rod is fixed inside the inner support frame at the end away from the bidirectional screw, and both push seats are slidably connected to the guide rod.

[0012] As a preferred embodiment of the oilfield storage tank heating device provided by this utility model, four rotating shafts are rotatably connected in an internal array at the lower end of the guide tube. Each rotating shaft has a helical blade fixed on its outer side and located on the outer side of the guide tube, and each rotating shaft has a second bevel gear fixed on its outer side and located on the inner side of the guide tube.

[0013] As a preferred embodiment of the oilfield storage tank heating device provided by this utility model, a first motor is fixed at the bottom of the top plate and inside the guide cylinder. A support shaft is fixed at the output end of the first motor. A first bevel gear is fixed at the end of the support shaft away from the first motor. The first bevel gear is meshed with four second bevel gears.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The oilfield storage tank heating device provided by this utility model, through its overall structural design, enables two electric heating tubes to rotate around a hollow support cylinder on the outside of the storage tank body. This allows the electric heating tubes to heat the inner and outer walls of the storage tank body without direct contact with the oil. Furthermore, by moving the top plate up and down, the guide cylinder and piston disc are controlled to move within the storage tank body, facilitating the compression of the oil stored in the tank body, allowing it to flow rapidly and repeatedly contact the inner wall of the storage tank body for efficient heating. This effectively improves heat transfer efficiency and ensures more uniform heating. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the oilfield storage tank heating device provided by this utility model;

[0018] Figure 2 A schematic diagram of the structure of the oilfield storage tank heating device provided by this utility model after the top plate is moved down;

[0019] Figure 3 A schematic diagram of the inner side of the guide tube of the oilfield storage tank heating device provided by this utility model;

[0020] Figure 4 A schematic diagram of the outer side of the hollow support cylinder of the oilfield storage tank heating device provided by this utility model;

[0021] Figure 5 This is a schematic diagram of the inner side of the support frame of the oilfield storage tank heating device provided by this utility model.

[0022] The markings in the diagram are explained as follows:

[0023] 1. Oil storage tank body; 2. Tank cover; 3. External support frame; 4. Telescopic cylinder; 5. Top plate; 6. Guide cylinder; 7. Piston disc; 8. Hollow support cylinder; 9. First motor; 10. Support shaft; 11. First bevel gear; 12. Rotating shaft; 13. Spiral blade; 14. Second bevel gear; 15. Outer sleeve; 16. Inner support frame; 17. First spur gear; 18. Second motor; 19. Second spur gear; 20. Guide rod; 21. Bidirectional screw; 22. Push guide seat; 23. Heating tube body; 24. Third bevel gear; 25. Third motor; 26. Fourth bevel gear. Detailed Implementation

[0024] As described in the background art, when the heating element located inside the tank is rapidly heated, the oil comes into direct contact with the high-temperature element, which has an adverse effect on the quality of the oil. Furthermore, the oil conducts heat slowly through diffusion when it is not stirred, resulting in uneven heating.

[0025] To solve this technical problem, this utility model provides a heating device for oilfield storage tanks, which is used for heating the oil in oilfield storage tanks;

[0026] The tank includes an oil storage tank body 1 and a tank cover 2. An external support frame 3 is provided on the outside of the oil storage tank body 1 and the tank cover 2. Telescopic cylinders 4 are fixed on both sides of the external support frame 3. A top plate 5 is fixed between the telescopic ends of the two telescopic cylinders 4. A guide cylinder 6 is fixed at the center of the bottom end of the top plate 5. A hollow support cylinder 8 is fixed at the center of the inside of the external support frame 3. The lower end of the guide cylinder 6 passes through the hollow support cylinder 8 and is fixed with a piston disc 7. The guide cylinder 6 and the hollow support cylinder 8 are slidably connected.

[0027] An outer sleeve 15 is rotatably connected to the outside of the hollow support cylinder 8 and the inside of the outer support frame 3. An inner support frame 16 is fixed to the outside of the outer sleeve 15. A drive assembly is provided between the inner support frame 16 and the hollow support cylinder 8. A pusher seat 22 is provided on the inner side of both sides of the inner support frame 16. An electric heating tube 23 is fixed to the lower end of each pusher seat 22. Both electric heating tubes 23 are located outside the oil storage tank body 1 and are in contact with the oil storage tank body 1.

[0028] The oilfield storage tank heating device provided by this utility model, through its overall structural design, enables heating of the inner and outer walls of the storage tank body 1 without direct contact with the oil. Furthermore, by driving the guide cylinder 6 and piston disc 7 to move within the storage tank body 1, the oil stored in the storage tank body 1 is squeezed, causing it to flow rapidly and repeatedly contact the inner wall of the storage tank body 1, thus achieving efficient heating, effectively improving heat transfer efficiency, and making the heating more uniform.

[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] Example 1:

[0032] Please refer to Figure 1-5An oilfield storage tank heating device includes a storage tank body 1 and a tank cover 2. In order to quickly heat the oil stored in the storage tank body 1, an outer support frame 3 is provided on the outside of the storage tank body 1 and the tank cover 2. First, in order to facilitate heating of the inner and outer walls of the storage tank body 1, a hollow support cylinder 8 is fixed at the center inside the outer support frame 3. An outer sleeve 15 is rotatably connected to the outside of the hollow support cylinder 8 and located inside the outer support frame 3. An inner support frame 16 is fixed to the outside of the outer sleeve 15. Pushing seats 22 are provided on the inner sides of both sides of the inner support frame 16. An electric heating tube 23 is fixed at the lower end of each pushing seat 22. Both electric heating tubes 23 are located outside the storage tank body 1 and are in contact with the storage tank body 1.

[0033] In order to facilitate the two electric heating tubes 23 to be closely attached to the oil tank body 1 and rotate around the hollow support cylinder 8, so as to uniformly heat the inner and outer walls of the oil tank body 1, a drive assembly is provided between the inner support frame 16 and the hollow support cylinder 8.

[0034] Specifically, the drive assembly includes a first spur gear 17, a first spur gear 17 is fixed on the outside of the hollow support cylinder 8 and at the upper end of the outer sleeve 15, a second motor 18 is fixed on the upper end of the inner support frame 16 and on the outside of the first spur gear 17, a second spur gear 19 is fixed at the output end of the second motor 18, and the second spur gear 19 is meshed with the first spur gear 17.

[0035] To facilitate adjustment of the distance between the two heating elements 23, thus adapting to oil tanks of different diameters and ensuring that the heating elements 23 remain in close contact with the oil tank body 1, a bidirectional screw 21 is rotatably connected to one end of the inner support frame 16. Two guide seats 22 are located on the outer sides of the bidirectional screw 21 and are threadedly connected to it. To facilitate control of the rotation of the bidirectional screw 21, which in turn drives the two guide seats 22 to move closer or further apart, the distance between the two heating elements 23 can be adjusted. A third bevel gear 24 is fixed to the outer side of the bidirectional screw 21 and inside the inner support frame 16. A third motor 25 is fixed to the inside of the inner support frame 16 and outside the third bevel gear 24. A fourth bevel gear 26 is fixed to the output end of the third motor 25. The fourth bevel gear 26 meshes with the third bevel gear 24. In order to further guide the movement of the two push seats 22, a guide rod 20 is fixed inside the inner support frame 16 at the end away from the bidirectional screw 21. Both push seats 22 are slidably connected to the guide rod 20.

[0036] Telescopic cylinders 4 are fixed on both sides of the outer frame 3. A top plate 5 is fixed between the telescopic ends of the two telescopic cylinders 4. The top plate 5 is located on the upper end of the outer frame 3. A guide cylinder 6 is fixed at the center of the bottom end of the top plate 5. The lower end of the guide cylinder 6 passes through the hollow support cylinder 8 and is fixed with a piston disc 7. The guide cylinder 6 is slidably connected to the hollow support cylinder 8. The two telescopic cylinders 4 can easily control the piston movement of the guide cylinder 6 inside the hollow support cylinder 8. Then, the piston disc 7 can be used to squeeze the oil stored in the oil storage tank body 1, so that the oil flows quickly and repeatedly contacts the inner wall of the oil storage tank body 1 to achieve efficient heating, effectively improve the heat transfer efficiency, and make the heating more uniform.

[0037] Example 2:

[0038] The oilfield storage tank heating device provided in Example 1 has been further optimized, specifically, as follows: Figure 3 As shown, when the piston disc 7 moves down inside the oil tank body 1 to squeeze the oil, some oil will flow to the upper end of the piston disc 7. In order to further stir this part of the oil and make it flow towards the inner wall of the oil tank body 1, so as to contact it and achieve heating, a first motor 9 is fixed at the bottom of the top plate 5 and inside the guide cylinder 6. A support shaft 10 is fixed at the output end of the first motor 9. A first bevel gear 11 is fixed at the end of the support shaft 10 away from the first motor 9. Four rotating shafts 12 are rotatably connected in the internal array at the lower end of the guide cylinder 6. A spiral blade 13 is fixed on the outer side of each rotating shaft 12 and outside the guide cylinder 6. A second bevel gear 14 is fixed on the outer side of each rotating shaft 12 and inside the guide cylinder 6. The first bevel gear 11 is meshed with the four second bevel gears 14.

[0039] The mechanical transmission components provided in this utility model are all closed designs that can be opened for maintenance. According to the mechanical manual, as long as they are properly maintained, these mechanical transmission components can normally realize the transmission motion claimed above.

[0040] All of the above electrical components are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that performs control, and the existing publicly available power connection technology will not be described in detail here.

[0041] The operation of the oilfield storage tank heating device provided by this utility model is as follows: First, move the device to the outside of the storage tank body 1, turn on the electric heating tube 23 to raise its temperature, and start the third motor 25 to drive the fourth bevel gear 26 to rotate. The meshing of the fourth bevel gear 26 and the third bevel gear 24 drives the bidirectional screw 21 to rotate. With the sliding guidance of the guide rod 20, the two push seats 22 move closer or further away from each other, so that the distance between the two electric heating tubes 23 can be adjusted so that the two electric heating tubes 23 can be in close contact with the outer wall of the storage tank body 1. At this time, start the second motor 18 to drive the second flat gear 19 to rotate. The meshing of the second flat gear 19 and the first flat gear 17 drives the outer sleeve 15 to rotate outside the hollow support cylinder 8, thereby causing the inner support frame 16 to rotate, which facilitates the rotation of the two electric heating tubes 23 outside the storage tank body 1, so as to uniformly heat the outer wall and inner wall of the storage tank body 1.

[0042] After removing the tank cover 2, the telescopic cylinder 4 is activated to move the top plate 5 downward, thereby causing the guide cylinder 6 and piston disc 7 to move to the inside of the oil storage tank body 1. During the downward movement of the piston disc 7, the oil is squeezed to accelerate its flow. The first motor 9 is activated to drive the support shaft 10 and the first bevel gear 11 to rotate. By using the meshing of the first bevel gear 11 with the four second bevel gears 14, the four rotating shafts 12 and the spiral blades 13 are driven to rotate, thereby further stirring the part of the oil flowing to the upper end of the piston disc 7, causing it to flow towards the inner wall of the oil storage tank body 1 and finally contact the inner wall of the oil storage tank body 1 to achieve heating, improve its heat conduction speed, and make the overall heating of the oil more uniform. The piston disc 7 is then repeatedly controlled to move up and down to facilitate thorough stirring of the oil.

Claims

1. An oil tank heating device for an oil field, comprising a tank body (1) and a tank cover (2), characterized in that, An external support frame (3) is provided on the outside of the oil storage tank body (1) and the tank cover (2). Telescopic cylinders (4) are fixed on both sides of the external support frame (3). A top plate (5) is fixed between the telescopic ends of the two telescopic cylinders (4). A guide cylinder (6) is fixed at the center of the bottom end of the top plate (5). A hollow support cylinder (8) is fixed at the center inside the external support frame (3). The lower end of the guide cylinder (6) passes through the hollow support cylinder (8) and is fixed with a piston disc (7). The guide cylinder (6) and the hollow support cylinder (8) are slidably connected. An outer sleeve (15) is rotatably connected to the outside of the hollow support cylinder (8) and the inside of the outer support frame (3). An inner support frame (16) is fixed to the outside of the outer sleeve (15). A drive assembly is provided between the inner support frame (16) and the hollow support cylinder (8). A pusher seat (22) is provided on the inner side of both sides of the inner support frame (16). An electric heating tube (23) is fixed to the lower end of each pusher seat (22). Both electric heating tubes (23) are located outside the oil storage tank body (1) and are in contact with the oil storage tank body (1).

2. The oilfield storage tank warming apparatus of claim 1, wherein, The drive assembly includes a first spur gear (17), which is fixed to the outside of the hollow support cylinder (8) and at the upper end of the outer sleeve (15). A second motor (18) is fixed to the upper end of the inner support frame (16) and outside the first spur gear (17). A second spur gear (19) is fixed to the output end of the second motor (18). The second spur gear (19) meshes with the first spur gear (17).

3. The oilfield storage tank warming apparatus of claim 1, wherein, A bidirectional screw (21) is rotatably connected to one end of the inner support frame (16). Two push seats (22) are located on the outer sides of the bidirectional screw (21) and are threadedly connected to the bidirectional screw (21). A third bevel gear (24) is fixed on the outer side of the bidirectional screw (21) and inside the inner support frame (16). A third motor (25) is fixed inside the inner support frame (16) and outside the third bevel gear (24). A fourth bevel gear (26) is fixed at the output end of the third motor (25). The fourth bevel gear (26) meshes with the third bevel gear (24).

4. The oilfield storage tank warming apparatus of claim 3, wherein, The inner support frame (16) has a guide rod (20) fixed inside at the end away from the bidirectional screw (21), and both push seats (22) are slidably connected to the guide rod (20).

5. The oilfield storage tank warming apparatus of claim 1, wherein, The lower end of the guide tube (6) is internally connected to four rotating shafts (12). Each rotating shaft (12) is fixed with a spiral blade (13) on its outer side and located on the outer side of the guide tube (6). Each rotating shaft (12) is fixed with a second bevel gear (14) on its outer side and located on the inner side of the guide tube (6).

6. The oilfield storage tank warming apparatus of claim 5, wherein, A first motor (9) is fixed at the bottom of the top plate (5) and inside the guide cylinder (6). A support shaft (10) is fixed at the output end of the first motor (9). A first bevel gear (11) is fixed at the end of the support shaft (10) away from the first motor (9). The first bevel gear (11) is meshed with four second bevel gears (14).

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