Device and method for cleaning carbon deposit on fire tube of single-well storage and collection tank of oil field

Abstract

The invention discloses an oil field single well storage tank fire tube carbon deposit cleaning device, which belongs to the technical field of oil exploitation equipment, and comprises a high-speed driving motor, a connector fixedly connected with the high-speed driving motor, a carbon deposit brush fixedly connected with the connector, a support tube fixedly connected with one end of the high-speed driving motor, and a negative pressure device connected with one end of the support tube. The supporting tube is further communicated with a horn mouth, and fire tube carbon deposit finally enters negative pressure equipment. Cleaned carbon deposit particles are discharged through the horn mouth and the supporting pipe, a traditional mode of high-pressure water flushing is replaced, the operation process is shortened, the cleaning effect is improved, and the operation cost is reduced. The invention further discloses an oil field single well storage tank fire tube carbon deposit cleaning method which comprises the steps that the supporting tube and the steering pull rod are pushed, so that the carbon deposit brush moves along the axis of the fire tube; a high-speed driving motor is started to drive a carbon deposition brush to rotate, and carbon deposition on the inner wall of the fire tube is cleaned; and synchronously starting the negative pressure equipment, and sucking the cleaned carbon deposits into the negative pressure equipment to complete the cleaning of the carbon deposits.

Description

Technical Field

[0001] This invention belongs to the field of petroleum extraction equipment technology, specifically relating to a carbon deposit cleaning device for fire tubes of oilfield single-well storage tanks, and also to a method for carbon deposit cleaning of fire tubes of oilfield single-well storage tanks. Background Technology

[0002] In oilfield production, remote wells, lacking sophisticated oil and gas gathering and transportation systems, often use single-well storage tanks to store crude oil. After heating and melting, the crude oil is transported to the gathering station by tank truck. The heating of crude oil in single-well storage tanks typically uses associated natural gas from the oilfield as the combustion medium. This natural gas contains numerous impurities and water molecules, and factors such as low gas pressure and the inability to adjust the gas-to-fuel ratio according to combustion conditions result in incomplete combustion over a long period. This leads to the formation of large amounts of carbon deposits adhering to the inner walls of the fire tubes, clogging the fire tubes and exhaust ducts. This severely hinders effective temperature transfer, causing the crude oil in the storage chamber to heat up slowly, especially in winter. This not only affects crude oil transportation but also increases the wasteful consumption of natural gas.

[0003] To address this issue, operators must frequently clean the carbon deposits on the inner walls of the fire tubes to ensure smooth crude oil transportation. On-site cleaning of fire tube carbon deposits often involves high-pressure water flushing using pump trucks, which is not only time-consuming and labor-intensive, but also results in wastewater that cannot be discharged, leading to secondary hard deposits, increasing production costs and labor intensity. Summary of the Invention

[0004] The primary objective of this invention is to provide a carbon deposit cleaning device for fire tubes in oilfield single-well storage tanks, which solves the technical problem in the prior art where high-pressure water flushing of the inner wall of the fire tube is time-consuming and labor-intensive, and wastewater cannot be discharged, resulting in secondary hard adhesion, which increases production costs and labor intensity.

[0005] The second objective of this invention is to provide a method for cleaning carbon deposits on the fire tubes of a single well in an oilfield, thereby reducing labor intensity.

[0006] The first technical solution adopted in this invention is an oilfield single-well storage tank fire tube carbon cleaning device, including a high-speed drive motor, a connector fixedly connected to the output end of the high-speed drive motor, a carbon brush fixedly connected to the connector, a support pipe fixedly connected to the end of the high-speed drive motor away from the connector, a negative pressure device connected to the end of the support pipe away from the high-speed drive motor, and a flared mouth connected to the support pipe. The carbon deposits in the fire tube enter the negative pressure device along the flared mouth and the support pipe.

[0007] The first technical solution of this invention is further characterized by:

[0008] The opening of the flared mouth faces the carbon deposit brush.

[0009] The side wall of the support tube is connected to a bracket, and auxiliary support wheels are symmetrically arranged on both sides of the bracket. The two auxiliary support wheels are connected by axles, which pass through the bracket and rotate on the bracket.

[0010] The bracket is hinged to the side wall of the support tube, and a steering tie rod is hinged to the top of the bracket. The end of the steering tie rod away from the bracket is detachably connected to the side wall of the support tube.

[0011] The end of the support tube away from the high-speed drive motor is equipped with a coupling, through which an extension tube is connected.

[0012] The carbon deposit brush uses a structure of wear-resistant nylon filaments and steel wire.

[0013] The second technical solution adopted in this invention is a method for cleaning carbon deposits on the fire tubes of a single well in an oilfield, using the aforementioned carbon deposit cleaning device for the fire tubes of a single well in an oilfield, specifically including the following steps:

[0014] S1, push the support tube and steering tie rod to move the carbon deposit brush along the fire tube axis;

[0015] S2: The high-speed drive motor is turned on to rotate the carbon deposit brush and clean the carbon deposits on the inner wall of the fire tube; at the same time, the negative pressure device is turned on to suck the cleaned carbon deposits from the flare mouth and into the negative pressure device along the support tube to complete the cleaning of the carbon deposits.

[0016] The beneficial effects of this invention are:

[0017] This invention uses a high-speed drive motor to drive a carbon deposit brush of the same diameter as the inner wall of the fire tube to rotate at high speed, achieving efficient and thorough crushing and stripping of large amounts of carbon deposits on the inner wall of the fire tube. This improves the heat exchange efficiency of the single-well storage tank, reduces natural gas consumption, and uses the negative pressure of the negative pressure equipment to discharge the cleaned carbon particles through the funnel and support pipe, replacing the traditional method of high-pressure water washing. This shortens the operation process, improves the cleaning effect, and reduces operating costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the oilfield single-well storage tank fire tube carbon deposit cleaning device of the present invention;

[0019] Figure 2 This is a schematic diagram of the extension pipe structure in the oilfield single-well storage tank fire tube carbon removal device of the present invention.

[0020] In the diagram: 1. High-speed drive motor, 2. Support tube, 3. Bracket, 4. Axle, 5. Auxiliary support wheel, 6. Steering tie rod, 7. Shaft pin nut, 8. Connector, 9. Carbon deposit brush, 10. Carbon deposit brush connecting bolt, 11. Fixing screw, 12. Fixing pin nut, 13. Coupling, 14. Extension tube, 15. Flared end. Detailed Implementation

[0021] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] This invention discloses a carbon deposit cleaning device for fire tubes in oilfield single-well storage tanks. It includes a high-speed drive motor 1, with a connector 8 fixedly connected to the output end of the motor 1. A carbon deposit brush 9 is fixedly connected to the connector 8. A support pipe 2 is fixedly connected to the end of the motor 1 facing away from the connector 8. A negative pressure device is connected to the end of the support pipe 2 away from the motor 1. A funnel-shaped opening 15 is also connected to the support pipe 2, with the opening of the funnel-shaped opening 15 facing the carbon deposit brush 9 for better collection of carbon particles. The carbon deposits in the fire tube enter the negative pressure device along the funnel-shaped opening 15 and the support pipe 2. A coupling 13 is provided at the end of the support pipe 2 away from the motor 1, through which an extension pipe 14 is connected. The negative pressure device is connected to the end of the extension pipe 14, allowing the cleaned carbon deposits on the inner wall of the fire tube to enter through the funnel-shaped opening 15 and be extracted from the fire tube, avoiding secondary condensation and environmental pollution.

[0024] This invention converts electrical energy into high-speed rotating mechanical energy using a high-speed drive motor 1. This drives a carbon deposit brush 9, with a diameter equal to that of the inner wall of the fire tube, to rotate at high speed. This achieves efficient and thorough crushing and stripping of large amounts of carbon deposits from the inner wall of the fire tube, improving the heat exchange efficiency of the single-well storage tank and reducing natural gas consumption. In this embodiment, a vacuum cleaner is used as the negative pressure device. Simultaneously, an industrial vacuum cleaner is connected to the end of the extension pipe 14. Under the negative pressure of the negative pressure device, the cleaned carbon particles enter the support pipe 2 through the flared end 15, then enter the extension pipe 14 for collection, and are then discharged from the fire tube by the vacuum cleaner. This method replaces the traditional high-pressure water washing with mechanical energy, shortening the operation process, improving the cleaning effect, and reducing operating costs. The improved heat exchange efficiency of the furnace in the cleaned single-well storage tank reduces gas consumption to a certain extent, thus reducing carbon emissions and environmental pollution. The extension pipe 14 can be combined according to site requirements to push the device deep into the fire tube for carbon cleaning.

[0025] Example 2

[0026] Based on Embodiment 1, a bracket 3 is connected to the side wall of the support pipe 2. Auxiliary support wheels 5 are symmetrically arranged on both sides of the bracket 3, and the two auxiliary support wheels 5 are connected by an axle 4. The axle 4 passes through the bracket 3 and rotates on it. This ensures the device remains at the center of the cylindrical fire tube axis and can move back and forth along the axis. The bracket 3 can drive the auxiliary support wheels 5 to rotate 90°, reducing the axial cross-sectional area of ​​the device and ensuring it can enter the narrow passage at the end of the fire tube in a single-well storage tank. The bracket 3 is hinged to the side wall of the support pipe 2, and a steering rod 6 is hinged to the top of the bracket 3. The end of the steering rod 6 facing away from the bracket 3 is detachably connected to the side wall of the support pipe 2. By pushing the steering rod 6 and locking it, the auxiliary support wheels 5 and the bracket 3 are reset, ensuring the device remains at the center of the fire tube axis.

[0027] Example 3

[0028] Based on Example 1 or Example 2, the carbon deposit brush 9 adopts a structure of wear-resistant nylon bristles + steel wire. This improves the durability of the bristles of the carbon deposit brush 9, and its steel wire portion has good elasticity and hardness, which can remove stubborn carbon deposits, ensuring both the durability and cleaning effect of the brush and extending its service life.

[0029] Example 4

[0030] The following is through Figure 1 and Figure 2 The specific connection structure will be further explained and illustrated in this invention.

[0031] The high-speed drive motor 1 has an annular boss at its rear end, with a threaded through hole machined on one side. The rear end of the high-speed drive motor 1 is nested with the support tube 2, and the connection is secured by a fixing screw 11 and a bolt hole in the support tube 2. The front end of the high-speed drive motor 1 shaft is machined into a D-shape and nested with the rear end of the connector 8 using a single screw. The support tube 2 is a hollow tube design, nested with the high-speed drive motor 1. The rear end of the support tube 2 has a threaded connection to the coupling 13. The lower front end of the support tube 2 has an opening welded to the flared end 15. A semi-threaded pin is welded to the lower front end of the support tube 2 for mounting with the bracket 3. A semi-threaded pin is welded to the side of the middle and rear ends of the support tube 2, and the steering tie rod 6 is fixed or released using a nut. The bracket 3 has an opening in the middle for mounting with the semi-threaded pin welded to the lower front end of the support tube 2. A semi-threaded pin is welded to one end of the upper part of the bracket 3 for mounting with the steering tie rod 6. The lower ends of the bracket 3 have openings for nesting and welding with the wheel axle 4. The wheel axle 4 is fitted with the auxiliary support wheel 5 with a clearance fit. The auxiliary support wheel 5 is fixed with external threads and nuts and washers at both ends; the steering tie rod 6 has a flattened design with holes at both ends. One end of the steering tie rod 6 is welded to the upper part of the bracket 3 with a semi-threaded pin and pin nut 7 for installation. The other end of the steering tie rod 6 is fixed or released to the side wall of the support tube 2 by fixing pin nut 12; the pin nut 7 is threadedly connected to the upper part of the bracket 3 with a semi-threaded pin; the connector 8 has 4 through holes evenly distributed on the front plane, which are connected to the carbon brush 9 by 4 carbon brush connecting bolts 10. The rear end is nested with the front D-shaped shaft of the high-speed drive motor 1 to realize power transmission; the carbon brush 9 is connected to the connector 8 by 4 carbon brush connecting bolts 10; the extension tube 14 has a multi-segment design. The extension tube 14 has external threads at both ends and is threadedly connected to the support tube 2 by coupling 13 to realize adjustable length. The end of the extension tube 14 can be connected to a vacuum cleaner to realize negative pressure discharge of carbon particles; the flared mouth 15 is welded to the lower front hole of the support tube 2 to realize the collection of carbon particles under negative pressure.

[0032] This invention also discloses a method for cleaning carbon deposits on the fire tubes of a single well in an oilfield, using the aforementioned carbon deposit cleaning device for the fire tubes of a single well in an oilfield, specifically including the following steps:

[0033] S1, push the support tube 2 and the steering tie rod 6 to move the carbon deposit brush 9 along the fire tube axis;

[0034] S2, turn on the high-speed drive motor 1 to drive the carbon brush 9 to rotate and clean the carbon deposits on the inner wall of the fire tube; at the same time, turn on the negative pressure device to suck the cleaned carbon deposits from the horn 15 and into the negative pressure device along the support tube 2 to complete the cleaning of the carbon deposits.

[0035] The working principle of this invention is as follows:

[0036] The oilfield single-well storage tank fire tube carbon deposit cleaning device enters the fire tube through a small hole in the explosion-proof door at the end of the fire tube. A fixed steering rod 6 keeps the support 3 and auxiliary support wheel 5 straight, ensuring the high-speed drive motor 1 is always positioned along the fire tube axis. By pushing and pulling the extension tube 14, the auxiliary support wheel 5 moves back and forth along the axis inside the fire tube. The high-speed drive motor 1 rotates at high speed, driving the carbon deposit brush 9 to efficiently crush and peel off large amounts of carbon deposits from the inner wall of the fire tube without any blind spots. Simultaneously, an industrial vacuum cleaner is connected to the end of the extension tube 14. Under negative pressure, the carbon particles cleaned are collected through the flared end 15, support tube 2, and extension tube 14, entering the vacuum cleaner and exiting the fire tube.

Claims

1. A device for cleaning the carbon deposit of the fire tube of the oil field single well reservoir tank, characterized in that, The application relates to a high-speed driving motor (1) which is fixed with a connector (8) at the output end, the connector (8) is fixed with a carbon brush (9), the high-speed driving motor (1) is fixed with a support pipe (2) at the end away from the connector (8), the end of the support pipe (2) away from the high-speed driving motor (1) is connected with a negative pressure device, and the support pipe (2) is also connected with a trumpet mouth (15); the carbon brush (9) enters the negative pressure device along the trumpet mouth (15) and the support pipe (2).

2. The oilfield single well reservoir tank fire tube carbon cleaning device according to claim 1, characterized in that, The trumpet mouth (15) is open towards the carbon brush (9).

3. The oilfield single well reservoir tank fire tube carbon cleaning device of claim 1, wherein, The support pipe (2) is connected with a support frame (3) on the side wall, the support frame (3) is symmetrically provided with auxiliary support wheels (5) on both sides, the two auxiliary support wheels (5) are connected through an axle (4), and the axle (4) penetrates through the support frame (3) and is rotationally connected on the support frame (3).

4. The oilfield single well reservoir tank fire tube carbon deposit cleaning device according to claim 3, characterized in that, The support frame (3) is hinged on the side wall of the support pipe (2), a steering pull rod (6) is hinged on the top of the support frame (3), and the end of the steering pull rod (6) away from the support frame (3) is detachably connected on the side wall of the support pipe (2).

5. The oilfield single well reservoir tank fire tube carbon cleaning device of claim 1, wherein, The end of the support pipe (2) away from the high-speed driving motor (1) is provided with a coupling (13), and an extension pipe (14) is connected through the coupling (13).

6. The oilfield single-well reservoir tank fire tube carbon deposit cleaning device according to any one of claims 1-5, characterized in that, The carbon brush (9) adopts the structure of wear-resistant nylon wire + steel wire.

7. The oil field single well storage tank fire tube carbon deposition cleaning method, using the oil field single well storage tank fire tube carbon deposition cleaning device as claimed in claim 4, characterized in that, Specifically, the following steps are included: S1, the support pipe (2) and the steering pull rod (6) are pushed to move the carbon brush (9) along the fire tube axis; S2, the high-speed driving motor (1) is started to drive the carbon brush (9) to rotate and clean the carbon deposition on the inner wall of the fire tube; simultaneously, the negative pressure device is started to suck the cleaned carbon deposition from the trumpet mouth (15) and into the negative pressure device along the support pipe (2), thereby completing the cleaning of the carbon deposition.

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