A heating device for maintaining the fluidity of crude oil

Abstract

This utility model discloses a heating device for maintaining the fluidity of crude oil, belonging to the technical field of heating equipment. It includes a base, a heating vessel on top of the base, a feeding pipe connected to one side of the heating vessel, and a reciprocating mechanism. The reciprocating mechanism includes a heat-gathering ring sleeved outside the heating vessel, configured to reciprocate against the outer wall of the heating vessel to ensure more uniform heating of the crude oil inside. A preheating mechanism includes a circulation pipe coiled around the outside of the feeding pipe, with a heat-collecting block connected to one end. The heat-collecting block is located inside the heating vessel and can recover a portion of the heat from inside the heating vessel and conduct it to the circulation pipe, preheating the crude oil in the feeding pipe. In this utility model, the reciprocating mechanism ensures more uniform heating of the crude oil, the preheating mechanism improves heat utilization, and the cooling mechanism enables controllable crude oil temperature.

Description

Technical Field

[0001] This utility model belongs to the field of heating equipment technology, and in particular relates to a heating device for maintaining the fluidity of crude oil. Background Technology

[0002] Crude oil refers to natural petroleum extracted directly from oil wells without any processing. It is essentially a liquid hydrocarbon mixture formed by the long-term action of ancient biological remains in the earth's crust under high temperature and pressure. It is mainly composed of carbon and hydrogen elements and is a blackish-brown or dark green viscous liquid. It is an important energy source and chemical raw material. During the extraction, storage and transportation of crude oil, it is necessary to heat it to maintain its fluidity.

[0003] Traditional crude oil heating equipment often uses a fixed heat source, resulting in excessively high temperatures in certain areas while insufficient temperatures in others. This can cause crude oil near the heat source to deteriorate due to overheating, while crude oil further away heats up slowly, leading to low overall heating efficiency. During crude oil transportation, it gradually cools due to heat dissipation from the pipe walls and the low ambient temperature, easily forming a condensed oil layer on the inner wall of the pipe, causing blockages. At the same time, traditional crude oil heating equipment lacks a precise temperature control mechanism, and when the local temperature is too high, a coking reaction can easily occur, producing a coking layer that adheres to the inner wall of the heating vessel, hindering the efficient transfer of heat from the vessel wall to the crude oil inside, and also reducing the quality of the crude oil. Utility Model Content

[0004] The purpose of this invention is to provide a heating device for maintaining the fluidity of crude oil in order to solve the problems of poor fixed-point heating efficiency and easy coking reaction caused by improper temperature control in traditional heating equipment.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a heating device for maintaining the fluidity of crude oil, comprising a base, a heating vessel disposed on the top of the base, a feeding pipe connected to one side of the heating vessel, a reciprocating mechanism, the reciprocating mechanism including a heat-gathering ring sleeved on the outside of the heating vessel, the heat-gathering ring being configured to reciprocate against the outer wall of the heating vessel, so that the crude oil in the heating vessel is heated more evenly, and a preheating mechanism, the preheating mechanism including a circulation pipe coiled around the outside of the feeding pipe, one end of the circulation pipe being connected to a heat-collecting block, the heat-collecting block being disposed inside the heating vessel, the heat-collecting block being able to recover a portion of the heat inside the heating vessel and conduct it to the circulation pipe, thereby preheating the crude oil in the feeding pipe through the circulation pipe.

[0006] Preferably, the base has cavities on both sides, and a rotating seat is embedded in the inner wall of the cavity. A reciprocating lead screw is rotatably connected inside the rotating seat, and a movable seat is provided outside the reciprocating lead screw. A first motor is fixedly installed on one side of the base, and the output end of the first motor is fixedly connected to one end of the reciprocating lead screw.

[0007] Preferably, the reciprocating mechanism further includes a sliding frame disposed above the cavity, a sliding block slidably connected to the bottom of the sliding frame, the bottom of the sliding block being fixedly connected to the top of the moving seat, one side of the sliding block being fixedly connected to one side of the outer wall of the heat-collecting ring, a heat pipe being embedded inside the heat-collecting ring, and one end of the heat pipe passing through the inside of the sliding block.

[0008] Preferably, the preheating mechanism further includes a rotating shaft disposed inside the feeding pipe, the outer wall of the rotating shaft being provided with a spiral blade, one side of the feeding pipe being connected to an inlet pipe through a block, and a second motor being fixedly installed on one side of the block, the output end of the second motor being fixedly connected to one end of the rotating shaft.

[0009] Preferably, the end of the rotating shaft away from the second motor is connected to a stirring shaft via a column, and multiple stirring blades are arranged around the outer wall of the stirring shaft along the axis.

[0010] Preferably, it further includes: a cooling mechanism, the cooling mechanism including an insertion tube passing through the top of the heating vessel, a baffle is provided inside the insertion tube, a spring is connected to the top of the baffle, one end of the spring is fixedly connected to the top of the inner wall of the insertion tube at a corresponding position, a sealing plug is connected to the bottom of the baffle, a sealing ring is sleeved on the outside of the sealing plug, two through holes are symmetrically opened on the outer wall of the insertion tube, and a cold air pipe is connected between two adjacent insertion tubes.

[0011] Preferably, the cooling mechanism further includes an insertion plug, the bottom outer wall of which is provided with a plurality of limiting grooves along the axis, and the inner wall of the insertion tube is provided with a plurality of limiting blocks at positions corresponding to the limiting grooves.

[0012] Preferably, the top of the sliding frame is connected to multiple mounting brackets, and an electric push rod is fixedly installed between two of the mounting brackets. The push rod of the electric push rod is fixedly connected to one end of the insertion bolt.

[0013] Preferably, a discharge pipe is connected to one side of the heating vessel, and a valve is connected to one end of the discharge pipe.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. In this utility model, by setting a heat-concentrating ring, the heat emitted by the heat pipe is more concentrated, and the heating efficiency is higher. By setting a reciprocating mechanism, the heat-concentrating ring can be attached to the outer wall of the heating vessel and reciprocate, preventing local overheating caused by fixed-point heating, and making the crude oil in the heating vessel more evenly heated. At the same time, by setting a stirring paddle, the crude oil is continuously stirred, preventing uneven heating of the crude oil located at the edge and center of the heating vessel, ensuring the heating effect and maintaining the fluidity of the crude oil.

[0016] 2. In this utility model, some heat is recovered through a heat collection block and conducted through a circulation pipe to preheat the crude oil during the transportation stage. This prevents the crude oil from solidifying due to temperature drop during transportation, thus preventing blockage of the feeding pipe. At the same time, it improves the utilization rate of heat. When the crude oil temperature is too high, a coking reaction is likely to occur, producing a coking layer that covers the inner wall of the heating vessel, resulting in a reduction in heat transfer efficiency. By setting a cooling mechanism, the temperature of the crude oil can be freely controlled, reducing the occurrence of coking reaction and ensuring the quality of the crude oil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a heating device for maintaining the fluidity of crude oil according to the present invention.

[0018] Figure 2 This is a schematic diagram showing the disassembled structure of a heating device for maintaining the fluidity of crude oil according to the present invention.

[0019] Figure 3 This is a schematic diagram of the reciprocating mechanism of a heating device for maintaining the fluidity of crude oil, as proposed in this utility model.

[0020] Figure 4 This is a partial cross-sectional view of the preheating mechanism of a heating device for maintaining the fluidity of crude oil, as proposed in this utility model.

[0021] Figure 5 This is a half-sectional schematic diagram of the cooling mechanism of a heating device for maintaining the fluidity of crude oil, as proposed in this utility model.

[0022] Legend: 1. Base; 2. Heating vessel; 3. Reciprocating mechanism; 301. Rotating seat; 302. Reciprocating lead screw; 303. Moving seat; 304. First motor; 305. Sliding frame; 306. Sliding block; 307. Heat-collecting ring; 308. Heat pipe; 4. Feeding pipe; 5. Preheating mechanism; 501. Rotating shaft; 502. Spiral blade; 503. Stirring shaft; 504. Stirring paddle; 505. Circulation pipe 506. Heat collector block; 6. Insulation shell; 7. Mounting bracket; 8. Cooling mechanism; 801. Insertion tube; 802. Baffle; 803. Sealing plug; 804. Sealing ring; 805. Through hole; 806. Spring; 807. Limiting block; 808. Insertion plug; 809. Limiting groove; 810. Electric push rod; 9. Cooling pipe; 10. Feed pipe; 11. Second motor; 12. Discharge pipe; 13. Valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution: a heating device for maintaining the fluidity of crude oil, including a base 1, a heating vessel 2 on the top of the base 1, a feeding pipe 4 connected to one side of the heating vessel 2, a reciprocating mechanism 3, the reciprocating mechanism 3 including a heat-collecting ring 307 sleeved on the outside of the heating vessel 2, the heat-collecting ring 307 being configured to reciprocate against the outer wall of the heating vessel 2, so that the crude oil in the heating vessel 2 is heated more evenly, wherein, a preheating mechanism 5, the preheating mechanism 5 including a circulation pipe 505 coiled around the outside of the feeding pipe 4, one end of the circulation pipe 505 being connected to a heat-collecting block 506, the heat-collecting block 506 being disposed inside the heating vessel 2, the heat-collecting block 506 being able to recover a portion of the heat inside the heating vessel 2 and conduct it into the circulation pipe 505, and preheat the crude oil in the feeding pipe 4 through the circulation pipe 505.

[0025] Both sides of the base 1 have cavities, and a rotating seat 301 is embedded in the inner wall of the cavity. A reciprocating screw 302 is rotatably connected inside the rotating seat 301. A movable seat 303 is provided outside the reciprocating screw 302. A first motor 304 is fixedly installed on one side of the base 1. The output end of the first motor 304 is fixedly connected to one end of the reciprocating screw 302.

[0026] The reciprocating mechanism 3 also includes a sliding frame 305 disposed above the cavity. A sliding block 306 is slidably connected to the bottom of the sliding frame 305. The bottom of the sliding block 306 is fixedly connected to the top of the moving seat 303. One side of the sliding block 306 is fixedly connected to the outer wall of one side of the heat-collecting ring 307. A heat pipe 308 is embedded inside the heat-collecting ring 307. One end of the heat pipe 308 passes through the inside of the sliding block 306.

[0027] The preheating mechanism 5 also includes a rotating shaft 501 disposed inside the feeding pipe 4. The outer wall of the rotating shaft 501 is provided with a spiral blade 502. One side of the feeding pipe 4 is connected to the feed pipe 10 through the block, and a second motor 11 is fixedly installed on one side of the block. The output end of the second motor 11 is fixedly connected to one end of the rotating shaft 501.

[0028] The end of the rotating shaft 501 away from the second motor 11 is connected to the stirring shaft 503 via a column, and multiple stirring paddles 504 are arranged around the outer wall of the stirring shaft 503 along the axis.

[0029] A discharge pipe 12 is connected to one side of the heating vessel 2, and a valve 13 is connected to one end of the discharge pipe 12.

[0030] Specifically, crude oil enters the feed pipe 4 from the feed pipe 10. The second motor 11 drives the rotating shaft 501 to rotate, and the rotating shaft 501 of the spiral blade 502 pushes the crude oil in the feed pipe 4 into the heating vessel 2. The heat pipe 308 is connected to the external heating system. The heat-gathering ring 307 gathers the heat emitted by the heat pipe 308 and concentrates it to the outer wall of the heating vessel 2, making the heating efficiency higher. The rotating seat 301 is equipped with a bearing and is connected to the reciprocating screw 302 through the bearing. The first motor 304 drives the reciprocating screw 302 to rotate. The external thread on the outer wall of the reciprocating screw 302 meshes with the internal thread on the inner wall of the moving seat 303, so that the moving seat 303 can reciprocate along the direction of the reciprocating screw 302. The moving seat 303 drives the sliding block. 306 moves, the cross-sectional shape of the sliding block 306 is convex, the outer wall of the protrusion of the sliding block 306 is slidably connected to the bottom of the sliding frame 305, so that the sliding block 306 reciprocates along the direction of the sliding frame 305. One side of the sliding block 306 is fixedly connected to one side of the heat-collecting ring 307. The sliding block 306 drives the heat-collecting ring 307 to reciprocate against the heating vessel 2. The stirring shaft 503 is connected to the rotating shaft 501 through the column. When the rotating shaft 501 rotates, the stirring shaft 503 rotates synchronously with the rotating shaft 501. Multiple stirring paddles 504 set on the outer wall of the stirring shaft 503 rotate with the stirring shaft 503 to continuously stir the crude oil in the heating vessel 2. The crude oil is heated more evenly by periodically heating the outer wall of the heating vessel 2 and continuously stirring.

[0031] It should be noted that the options for the first motor 304 and the second point, as well as the control unit, in the above description are selected as needed. This part is well-known technology in the field and will not be elaborated here.

[0032] It should be further explained that the reciprocating screw 302 described above is a closed helical track formed by two threaded grooves with the same pitch and opposite directions connected by a transition curve. The motion conversion is achieved by using the thrust of the helical side on the moving seat 303. This part is well known in the field and will not be described in detail here.

[0033] The cooling mechanism 8 includes an insertion tube 801 that passes through the top of the heating vessel 2. A baffle 802 is provided inside the insertion tube 801. A spring 806 is connected to the top of the baffle 802. One end of the spring 806 is fixedly connected to the top of the inner wall of the insertion tube 801 at a corresponding position. A sealing plug 803 is connected to the bottom of the baffle 802. A sealing ring 804 is sleeved on the outside of the sealing plug 803. Two through holes 805 are symmetrically opened on the outer wall of the insertion tube 801. A cooling air pipe 9 connects the two adjacent insertion tubes 801.

[0034] The cooling mechanism 8 also includes an insertion plug 808. The bottom outer wall of the insertion plug 808 is provided with multiple limiting grooves 809 around the axis. The inner wall of the insertion tube 801 is provided with multiple limiting blocks 807 at positions corresponding to the limiting grooves 809.

[0035] Multiple mounting brackets 7 are connected to the top of the sliding bracket 305. An electric push rod 810 is fixedly installed between two mounting brackets 7. The push rod of the electric push rod 810 is fixedly connected to one end of the insertion bolt 808.

[0036] Specifically, the heat collection block 506, located inside the heating vessel 2, has multiple heat collection grooves on its outer wall. These grooves significantly increase the contact area between the heat collection block 506 and the internal environment of the heating vessel 2. The heat collection block 506 conducts a portion of the heat from inside the heating vessel 2 to the circulation pipe 505. The circulation pipe 505 is coiled around the outside of the feeding pipe 4. Heat is transferred along the direction of the circulation pipe 505 to the crude oil in the feeding pipe 4, preheating the crude oil and preventing it from cooling and solidifying during transportation. The cooling pipe 9 is connected to an external cooling system. The push rod of the electric push rod 810 pushes the insertion plug 808 downward and inserts it into the insertion pipe 801. After the bottom end of the insertion plug 808 contacts the top of the baffle 802, the insertion plug 808 pushes the baffle 802 downward, stretching the spring 806. In the initial state, the outer wall of the sealing plug 803 is tightly fitted with the inner wall of the sealing ring 804. The sealing plug 803 follows the baffle 801. 2. As the insertion plug 808 moves downward, the limiting block 807 rises within the limiting groove 809. When the top of the outer wall of the limiting block 807 abuts against the top of the inner wall of the limiting groove 809, the insertion plug 808 cannot be further inserted into the insertion tube 801. At this time, the outer wall of the sealing plug 803 separates from the inner wall of the sealing ring 804, allowing the internal space of the insertion tube 801 to connect. The cold air in the cold air pipe 9 enters the interior of the heating vessel 2 through the gap between the sealing plug 803 and the sealing ring 804 to cool the crude oil. After cooling, the electric push rod 810 lifts the push rod, causing the insertion plug 808 to rise and disengage from the interior of the insertion tube 801. The spring 806 contracts, and the spring 806 pulls up the baffle 802 through its elastic force. The outer wall of the sealing plug 803 and the inner wall of the sealing ring 804 return to a tight fit, cutting off the space inside the insertion tube 801, preventing the cold air from entering the interior of the heating vessel 2 from the insertion tube 801.

[0037] It should be noted that the heat collector 506 and the circulation pipe 505 mentioned above are both made of copper. Copper has high thermal conductivity and is often used in scenarios that require rapid heat conduction. This part is a well-known technology in the field and will not be elaborated here.

[0038] It should be noted that the electric actuator 810 described above is a new type of linear actuator composed of a motor actuator and a control device, which is an electric drive device that converts the rotational motion of an electric motor into the linear reciprocating motion of an actuator. This part is well-known technology in the field and will not be described in detail here.

[0039] Working principle: When in use, the operator injects crude oil into the feed pipe 10, then starts the second motor 11 and the first motor 304. After the device has been working for a period of time, the operator starts the external heating system to heat the crude oil. When the crude oil temperature exceeds the standard, the operator starts the electric push rod 810 to connect the cooling mechanism 8, and then starts the external cooling system to cool the crude oil. When crude oil needs to be taken out, the operator turns the handwheel of valve 13 to open valve 13 and takes out crude oil from the discharge pipe 12.

[0040] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heating device for maintaining the fluidity of crude oil, characterized in that, include: A base (1) is provided on the top of the base (1) and a heating vessel (2) is provided on one side of the heating vessel (2) and a feeding pipe (4) is connected to it. The reciprocating mechanism (3) includes a heat-collecting ring (307) sleeved on the outside of the heating vessel (2). The heat-collecting ring (307) is configured to reciprocate against the outer wall of the heating vessel (2) so that the crude oil in the heating vessel (2) is heated more evenly. Among them, the preheating mechanism (5) includes a circulation pipe (505) coiled around the outside of the feeding pipe (4). One end of the circulation pipe (505) is connected to a heat collection block (506). The heat collection block (506) is arranged inside the heating vessel (2). The heat collection block (506) can recover a part of the heat inside the heating vessel (2) and conduct it to the circulation pipe (505). The crude oil in the feeding pipe (4) is preheated through the circulation pipe (505).

2. The heating device for maintaining the fluidity of crude oil according to claim 1, characterized in that, The base (1) has cavities on both sides, and a rotating seat (301) is embedded in the inner wall of the cavity. A reciprocating screw (302) is rotatably connected inside the rotating seat (301). A movable seat (303) is provided outside the reciprocating screw (302). A first motor (304) is fixedly installed on one side of the base (1). The output end of the first motor (304) is fixedly connected to one end of the reciprocating screw (302).

3. A heating device for maintaining the fluidity of crude oil according to claim 2, characterized in that, The reciprocating mechanism (3) further includes a sliding frame (305) disposed above the cavity. A sliding block (306) is slidably connected to the bottom of the sliding frame (305). The bottom of the sliding block (306) is fixedly connected to the top of the moving seat (303). One side of the sliding block (306) is fixedly connected to the outer wall of one side of the heat-collecting ring (307). A heat pipe (308) is embedded inside the heat-collecting ring (307). One end of the heat pipe (308) passes through the inside of the sliding block (306).

4. A heating device for maintaining the fluidity of crude oil according to claim 1, characterized in that, The preheating mechanism (5) also includes a rotating shaft (501) disposed inside the feeding pipe (4). The outer wall of the rotating shaft (501) is provided with a spiral blade (502). One side of the feeding pipe (4) is connected to a feed pipe (10) through a block, and a second motor (11) is fixedly installed on one side of the block. The output end of the second motor (11) is fixedly connected to one end of the rotating shaft (501).

5. A heating device for maintaining the fluidity of crude oil according to claim 4, characterized in that, The end of the rotating shaft (501) away from the second motor (11) is connected to a stirring shaft (503) via a column. Multiple stirring paddles (504) are arranged around the outer wall of the stirring shaft (503) along the axis.

6. A heating device for maintaining the fluidity of crude oil according to claim 1, characterized in that, Also includes: The cooling mechanism (8) includes an insertion tube (801) that passes through the top of the heating vessel (2). A baffle (802) is provided inside the insertion tube (801). A spring (806) is connected to the top of the baffle (802). One end of the spring (806) is fixedly connected to the top of the inner wall of the insertion tube (801). A sealing plug (803) is connected to the bottom of the baffle (802). A sealing ring (804) is sleeved on the outside of the sealing plug (803). Two through holes (805) are symmetrically opened on the outer wall of the insertion tube (801). A cold air pipe (9) is connected between two adjacent insertion tubes (801).

7. A heating device for maintaining the fluidity of crude oil according to claim 6, characterized in that, The cooling mechanism (8) also includes an insertion plug (808), and the bottom outer wall of the insertion plug (808) is provided with a plurality of limiting grooves (809) around the axis. The inner wall of the insertion tube (801) is provided with a plurality of limiting blocks (807) at positions corresponding to the limiting grooves (809).

8. A heating device for maintaining the fluidity of crude oil according to claim 3, characterized in that, The top of the sliding frame (305) is connected to multiple mounting brackets (7), and an electric push rod (810) is fixedly installed between two of the mounting brackets (7). The push rod of the electric push rod (810) is fixedly connected to one end of the insertion bolt (808).

9. A heating device for maintaining the fluidity of crude oil according to claim 1, characterized in that, The heating vessel (2) is connected to a discharge pipe (12) on one side, and a valve (13) is connected to one end of the discharge pipe (12).

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