Main and auxiliary box closed type oil pipe hot water cleaning device

Abstract

The utility model provides a main and auxiliary box closed type oil pipe hot water cleaning device, and belongs to the technical field of oil pipe cleaning equipment. The box body comprises a main box body and an auxiliary box body which forms a closed space together with the main box body; a rotating disc is arranged in the main box body, and hot water for soaking an oil pipe is arranged at the bottom of the main box body; an oil pipe material frame is arranged at the bottom of the auxiliary box body, a limiting part is arranged on the oil pipe material frame, pressing and fixing of an oil pipe are achieved through the drilling-through holding clamp and the limiting part, and drilling-through operation of the oil pipe is achieved through the drilling-through mechanism. The oil pipe is subjected to hot steaming, soaking and flushing through high-temperature hot water in the main box body, after preliminary hot washing is completed, the high-temperature hot water from the main box body is utilized in the auxiliary box body, the inner wall is further flushed in the full-length range and mechanically scraped, brushed and drilled through in the full-length range, and the outer wall of the oil pipe is flushed in all directions in the discharging process. The oil pipe cleaning device is suitable for cleaning oil pipes in various impurity states.

Description

Technical Field

[0001] The utility model relates to the technical field of tubing cleaning equipment, in particular to a main and auxiliary tank closed hot water cleaning device for tubing. Background Technique

[0002] The crude oil collected from the oil well underground in the oilfield is transported to the ground through the tubing underground. Each tubing is mostly 8.5 - 9.5 meters long and is connected to a predetermined position underground through threads. The total connection length can reach several kilometers underground. Therefore, the tubing bears a large load, withstands a high pressure, and is in a harsh environment, which has high requirements for both the tubing body and the connection parts. In order to ensure the reliability of the tubing during underground operation, to enable the tubing to be stably reused, improve the service life, and save the procurement volume of the first major material (tubing) for oil production in the oilfield, it is necessary to continuously conduct special inspection and maintenance on the tubing retrieved from the underground at the ground maintenance point during operation. Since a large amount of crude oil, scale rust, and other impurities adhere to the inside and outside of the tubing, effective inspection and maintenance can only be achieved after thorough cleaning.

[0003] The technology of tubing cleaning equipment has been developed for many years. Currently, more and more tubing hot water cleaning devices with a closed turntable drive structure are being used. Compared with the traditional cleaning method of adding cleaning agents in an open hot water tank for manual operation, it has been greatly improved in terms of environmental protection and automation. For example, Chinese Patent CN219851170U discloses a tooth-piercing feeding closed disc type cleaning machine, which has a good sealing and heat preservation performance through a closed box structure, reduces heat loss, saves costs, and avoids environmental pollution; and through a turntable structure, it realizes the soaking and boiling cleaning of the tubing as well as the spraying cleaning of the inner and outer walls, improving the cleaning efficiency. However, the following problems exist in the actual application of the above method: 1. The inner and outer walls of the tubing are respectively rinsed by an inner flushing nozzle and an outer flushing nozzle, but it can only be applied to the cleaning of ordinary tubing. For the heavy oil situation of viscous oil and high-viscosity wax oil in some blocks, the adhesion between the dirty oil and the tubing wall is strong and the melting point is high, resulting in a large amount of viscous oil, scale, and other impurities adhering to the tubing. It is very difficult to clean the tubing thoroughly only by relying on the inner and outer flushing nozzles. Especially for the inner wall of the tubing, the tubing is all of a slender hole structure, with a hole diameter of only φ50 - φ76 and a length of more than 9 meters. For the high-viscosity oil and dirt impurities adhering in such slender holes, it is very difficult to completely remove and discharge them by simple short-time low-pressure long-distance flushing. Therefore, the inner wall cleaning is a difficult point in tubing cleaning, especially for the viscous oil and scale that adhere firmly. Content of the Utility Model

[0004] The purpose of the present utility model is to provide a main and auxiliary box closed-type oil pipe hot water cleaning device, which heats, soaks, and flushes the oil pipe with high-temperature hot water in the main box body. After the preliminary hot washing is completed, the high-temperature hot water from the main box body is used in the auxiliary box body to further flush and mechanically scrape and drill the inner wall of the whole length range, and the outer wall of the oil pipe is comprehensively flushed during the discharging process, completing the high-quality cleaning of the inner and outer walls of the oil pipe, adapting to the cleaning of oil pipes in various impurity states, with a simple and compact structure and excellent cleaning effect.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions: A main and auxiliary box closed-type oil pipe hot water cleaning device includes a main box body and an auxiliary box body that jointly form a closed space with the main box body;

[0006] A turntable for driving the oil pipe to rotate inside the main box body is arranged inside the main box body, and hot water for soaking the oil pipe is arranged at the bottom of the main box body, and the bottom surface of the auxiliary box body is higher than the hot water level;

[0007] A number of evenly distributed card slots for accommodating the oil pipe are arranged at the circular edge position of the turntable, and an annular oil pipe baffle coaxial with the turntable shaft is arranged inside the main box body;

[0008] An oil pipe rack is arranged at the bottom of the auxiliary box body, one end of the oil pipe rack is connected to the discharging end of the annular oil pipe baffle, and the oil pipe directly enters the oil pipe rack from the discharging end of the annular oil pipe baffle;

[0009] A limiting part is arranged on the oil pipe rack, a drilling clamp is arranged on the auxiliary box body, the oil pipe is pressed and fixed by the drilling clamp and the limiting part, and the oil pipe drilling operation is realized through a drilling mechanism.

[0010] As an improvement of the present utility model, an inner oil pipe flushing component Ⅳ before the oil pipe enters the hot water and / or an inner oil pipe flushing component Ⅲ after the oil pipe leaves the hot water are arranged on the end plate of the main box body, and an outer oil pipe flushing component for flushing the outer wall of the oil pipe is arranged near the discharging port of the auxiliary box body.

[0011] As an improvement of the present utility model, the oil pipe rack includes a rack main body, and a guiding part, a limiting part Ⅰ, a limiting part Ⅱ, a feeding inclined plane, and a limiting part Ⅲ are sequentially arranged on the top of the rack main body along the moving direction of the oil pipe;

[0012] Inner oil pipe flushing components Ⅰ corresponding to the position of the limiting part Ⅰ and inner oil pipe flushing components Ⅱ corresponding to the position of the feeding inclined plane are respectively arranged on the end plate of the auxiliary box body, the drilling clamp is arranged directly above the limiting part Ⅱ, and the drilling clamp and the limiting part Ⅱ jointly realize the pressing and fixing of the oil pipe.

[0013] As an improvement of the present utility model, the oil pipe is moved from the limiting part I to the limiting part II, from the limiting part II to the feeding inclined plane, and from the limiting part III to the discharging conveying mechanism through an oil pipe flipping mechanism.

[0014] As an improvement of the present utility model, the oil pipe flipping mechanism includes a telescopic cylinder, a connecting rod, a rotating shaft and a flap. The telescopic cylinder and the connecting rod are both arranged outside the auxiliary box body. One end of the telescopic cylinder is hinged to the auxiliary box body, and the other end is hinged to one end of the connecting rod. The other end of the connecting rod is fixed on the rotating shaft. The rotating shaft is installed inside the auxiliary box body, and the flap is connected to the rotating shaft.

[0015] The beneficial effects of the present utility model are as follows: A main and auxiliary box closed oil pipe hot water cleaning device, through the closed space jointly formed by the main box body and the auxiliary box body communicating with each other. On the one hand, during the working process, it can avoid the sewage from flowing everywhere and the high-temperature steam from diffusing everywhere, keep the environmental sanitation clean, that is, reduce heat consumption, save fuel, and improve safety and environmental protection. On the other hand, the present utility model first performs heat steaming, soaking and flushing of the oil pipe with high-temperature hot water in the main box body. After the preliminary hot washing is completed, in the auxiliary box body, the high-temperature hot water from the main box body is used to further flush and mechanically scrape and drill the inner wall over the entire length range, and the outer wall of the oil pipe is fully flushed during the discharging process, completing the high-quality cleaning of the inner and outer walls of the oil pipe. Especially for the difficult-to-clean impurities such as thick oil and scale firmly adhered to the inner wall of the oil pipe, they can be completely removed. Therefore, the present utility model can not only meet the cleaning of the oil pipes of thin oil, but also has excellent cleaning effects on the oil pipes with high-viscosity oil, wax oil, scale, etc., and is suitable for the cleaning of oil pipes in various impurity states. The bottom surface of the auxiliary box body is higher than the hot water level, so that there is no high-temperature water in the auxiliary box body during the working process, and multiple large-size movable sealing covers are arranged on the top of the auxiliary box body, which is convenient for safety inspection and maintenance. The structure of the present utility model is simple and compact, and the cleaning effect is excellent. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is Figure 1 the top view of;

[0018] Figure 3 is Figure 1 the left view of;

[0019] Figure 4 is Figure 1 the A-A cross-sectional structural schematic diagram of;

[0020] Figure 5 is the structural schematic diagram of the oil pipe rack.

[0021] In the figure: 1, main box body; 2, feeding conveying mechanism; 3, auxiliary box body; 4, feeding port; 5, turntable driving mechanism; 6, discharging conveying mechanism; 7, flushing nozzle at the bottom of the main box body; 8, external flushing assembly for oil pipe; 9, turntable; 10, oil pipe; 11, oil pipe turning mechanism I; 12, discharging port; 13, turntable shaft; 14, internal flushing assembly I for oil pipe; 15, drilling-through mechanism; 16, internal flushing assembly II for oil pipe; 17, oil pipe turning mechanism II; 18, internal flushing assembly III for oil pipe; 19, sewage discharge port; 20, internal flushing assembly IV for oil pipe; 21, drilling-through clamp; 22, oil pipe rack; 221, guiding part; 222, limiting part I; 223, limiting part II; 224, material conveying inclined plane; 225, limiting part III; 226, rack main body; 227, shaft hole I; 228, shaft hole II; 23, flap I; 24, flap II; 25, annular oil pipe baffle. Detailed implementation manners

[0022] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0023] It should be noted that the orientation terms such as up, down, left, right, top, bottom, etc. in the embodiments of the present utility model are only relative concepts to each other or are referenced based on the normal use state of the product, and should not be considered as restrictive.

[0024] As Figures 1 to 4 shown, a main-auxiliary box closed oil pipe hot water cleaning device includes a main box body 1 and an auxiliary box body 3 that together with the main box body 1 form a closed space. Inside the main box body 1, there is a turntable 9 for driving the oil pipe 10 to rotate inside the main box body 1. The two turntables 9 are installed inside the main box body 1 through a turntable shaft 13. At the bottom of the main box body 1, there is hot water for soaking the oil pipe 10, and the bottom surface of the auxiliary box body 3 is higher than the hot water level. At the circumferential edge position of the turntable 9, there are several evenly distributed slots for accommodating the oil pipe 10. Inside the main box body 1, there is an annular oil pipe baffle 25 coaxial with the turntable shaft 13 for preventing the oil pipe 10 from detaching from the turntable 9. At least two oil pipe racks 22 are provided at the bottom of the auxiliary box body 3, and the positions of the oil pipe racks 22 are symmetrically distributed about the center of the oil pipe 10. Preferably, the number of the oil pipe racks 22 is three. One end of the oil pipe rack 22 is connected to the discharging end of the annular oil pipe baffle 25, and the oil pipe 10 directly enters the oil pipe rack 22 from the discharging end of the annular oil pipe baffle 25. It should be noted that the above turntable 9 rotates under the drive of the turntable shaft 13, and the turntable shaft rotates through the turntable driving mechanism 5. The turntable driving mechanism 5 is driven by a motor. Since this technology is a known and mature technology, it will not be described in detail here.

[0025] One end of the main box body 1 is provided with a feed inlet 4. In this embodiment, the feed inlet 4 is arranged at the right end of the main box body. The oil pipe 10 passes through the feed inlet 4 and enters the card slot of the turntable 9 through the feed conveying mechanism 2. The feed conveying mechanism 2 includes a motor and a conveying wheel, which are existing known devices and will not be introduced in detail here.

[0026] An inner oil pipe flushing assembly Ⅳ 20 before the oil pipe 10 enters the hot water and / or an inner oil pipe flushing assembly Ⅲ 18 after the oil pipe leaves the hot water are provided on the end plate of the main box body 1. An outer oil pipe flushing assembly 8 for flushing the outer wall of the oil pipe 10 is provided near the discharge port of the auxiliary box body 3. In this embodiment, to further improve the flushing effect of the inner wall of the oil pipe 10, both the inner oil pipe flushing assembly Ⅳ 20 and the inner oil pipe flushing assembly Ⅲ 18 are provided.

[0027] As Figure 5 shown, the oil pipe rack 22 includes a rack main body 226. Along the moving direction of the oil pipe 10, a guiding part 221, a limiting part Ⅰ 222, a limiting part Ⅱ 223, a feeding inclined plane 224 and a limiting part Ⅲ 225 are sequentially arranged on the top of the rack main body 226. Preferably, the guiding part 221 is an inclined plane structure, and both the limiting part Ⅰ 222 and the limiting part Ⅱ 223 are V-shaped structures. Among them, a shaft hole Ⅰ 227 and a shaft hole Ⅱ 228 are respectively opened on the oil pipe rack 22. Through the setting of the feeding inclined plane 224, the oil pipe 10 can be cached, and the inner walls of multiple oil pipes 10 can be simultaneously cleaned by the inner oil pipe flushing assembly Ⅱ 16 installed at the end of the auxiliary box body, further improving the cleaning effect and cleaning efficiency.

[0028] On the end plates of the auxiliary box body 3, there are respectively arranged an inner oil pipe flushing assembly I 14 corresponding to the position of the limiting part I 222 and an inner oil pipe flushing assembly II 16 corresponding to the position of the feeding inclined plane 224. The drilling tongs 21 are arranged directly above the limiting part II 223. The drilling tongs 21 and the limiting part II 223 jointly realize the pressing and fixing of the oil pipe 10. Preferably, the upper pressing tongs of the drilling tongs 21 adopt a V-shaped tong structure. The cylinder is fixed on the upper part outside the top plate of the auxiliary box body through a flange and a connecting bolt. By lifting the cylinder, the upper pressing tongs are driven to lift, so as to realize the pressing and loosening of the oil pipe at the drilling station. When it is necessary to carry out flushing and mechanical scraping and drilling operations on the inner wall of the oil pipe 10, the oil pipe 10 is pressed by the drilling tongs 21, and then the flushing and mechanical scraping and drilling operations on the inner wall of the oil pipe are realized through the drilling mechanism 15. Among them, the above-mentioned drilling mechanism 15 is an existing known device, which includes a drilling trolley, a drilling tool bar (gun bar), a scraping assembly and a support track. The drilling trolley is directly seated on the support track through walking wheels. The support body is seated on the ground civil engineering foundation outside the end of the auxiliary box body 3 and fixed by bolts. The inside of the drilling tool bar is a cavity structure, and hot water for drilling and flushing is introduced. One end for water inlet is rotationally connected with the power of the drilling trolley, and the other end is provided with a scraping assembly. The tool bar is kept concentric with the inner hole of the oil pipe 10 in the auxiliary box body 3 through a plurality of centering support mechanisms. The scraping end tool bar extends into the auxiliary box body 3 from the round hole at the end of the auxiliary box body 3, so that the scraping assembly is kept aligned with the port position of the oil pipe 10 at the drilling station. High-temperature water is introduced into the drilling tool bar, and the water source comes from the hot water in the cleaning main box body 1 and is supplied by a sewage pump. During operation, the high-temperature water is sprayed from the scraping place onto the inner wall of the scraped oil pipe 10. The sewage discharged from the oil pipe 10 flows back from the auxiliary box body 3 to the hot water area under the turntable 9 of the main box body 1, forming a hot water drilling cycle. In the auxiliary box body 3, further flushing and mechanical scraping and drilling operations are carried out on the inner wall of the oil pipe 10 through high-temperature hot water. There is no problem of secondary solidification of the inner wall crude oil in winter, the drilling is smooth, the efficiency and quality are improved, and the equipment damage rate is reduced. Since the above-mentioned drilling tongs 21 and the drilling mechanism 15 are both existing known and mature technologies, and how to realize the flushing and mechanical scraping and drilling operations on the inner wall of the oil pipe 10 is also a well-known technology in this field, the specific structure and installation thereof will not be introduced in detail here.

[0029] The movement of the oil pipe 10 from the limiting part Ⅰ 222 to the limiting part Ⅱ 223 and from the limiting part Ⅱ 223 to the feeding inclined plane 224 is realized by two oil pipe turning mechanisms Ⅱ 17 distributed corresponding to the above-mentioned limiting parts. In this embodiment, only the schematic diagram of one oil pipe turning mechanism Ⅱ 17 is given. The movement of the oil pipe 10 from the limiting part Ⅲ 225 to the discharging conveying mechanism 6 is realized by the oil pipe turning mechanism Ⅰ 11. Among them, both the oil pipe turning mechanism Ⅱ 17 and the oil pipe turning mechanism Ⅰ 11 include a telescopic cylinder, a connecting rod, a rotating shaft and a turning plate. The telescopic cylinder and the connecting rod are both arranged outside the secondary box body. One end of the telescopic cylinder is hinged to the secondary box body, and the other end is hinged to one end of the connecting rod. The other end of the connecting rod is fixed on the rotating shaft. The rotating shaft is installed inside the secondary box body, and the turning plate is connected to the rotating shaft. The rotating shafts of the two oil pipe turning mechanisms Ⅱ 17 pass through the shaft hole Ⅰ 227 and the shaft hole Ⅱ 228 on the oil pipe rack 22 respectively and are installed on the secondary box body 3. The corresponding turning plates of the two oil pipe turning mechanisms Ⅱ 17 are the turning plate Ⅰ 23 and the turning plate Ⅱ 24 respectively. It should be noted that the above-mentioned discharging conveying mechanism 6 includes a motor and a conveying wheel. Different from the feeding conveying mechanism 2, the conveying wheel is inclined. The function of this setting is that in addition to enabling the normal conveying of the oil pipe 10, it also makes the oil pipe 10 rotate continuously during the conveying process, so that the outer oil pipe cleaning assembly 8 can fully clean the outer wall of the oil pipe 10, further improving the cleaning effect. Since the discharging conveying mechanism 6 is an existing known device, it will not be introduced in detail here.

[0030] It should be noted that the water sources used by the above-mentioned inner oil pipe assembly Ⅳ 20, inner oil pipe assembly Ⅲ 18, inner oil pipe assembly Ⅰ 14, drilling mechanism 15, inner oil pipe assembly Ⅱ 16 and outer oil pipe cleaning assembly 8 are all the hot water in the main box body 1, so as to form a recycling. Preferably, a sewage outlet 19 is provided on one side of the bottom of the main box body 1, and a number of evenly distributed main box body bottom cleaning nozzles 7 are provided on the side opposite to the sewage outlet 19. The number of the main box body bottom cleaning nozzles 7 can be arranged according to the actual situation and is not limited here. In this embodiment, as Figure 3 shown, the sewage outlet 19 is arranged at the left side position of the bottom of the main box body 1, and the main box body bottom cleaning nozzles 7 are arranged at the right side position of the bottom of the main box body 1.

[0031] The working principle of the present utility model is as follows: During operation, the oil pipe 10 enters the feeding and conveying wheel set of the feeding and conveying mechanism 2 through the feeding port 4. The feeding and conveying wheel set rotates during feeding, driving the oil pipe 10 to be cleaned into the main box body 1 and simultaneously into the corresponding card slots (the card slots are also called disc teeth) of the two turntables 9 in the main box body 1, and stopping at the designated position. The turntable 9 rotates a distance of one card slot and pauses, then continues to feed the pipe. Continuing to rotate intermittently in this way, the oil pipe 10 is filled with the card slots of the turntable 9. The saturated hot steam generated by the hot water below fumigates and heats the oil pipe 10. During continuous intermittent feeding and rotation of the turntable 9, before the oil pipe 10 enters the hot water, the inner wall of the oil pipe 10 is first cleaned by the inner pipe flushing component Ⅳ20, mainly cleaning the impurities that are not firmly adhered, laying a foundation for the next process. The card slots drive the oil pipe 10 into the hot water below, starting hot water soaking and boiling. When it rotates close to one week, the oil pipe 10 exits from the water outlet at the lower part of the feeding and conveying wheel set, and the inner wall of the oil pipe 10 at the water outlet is cleaned by the inner pipe flushing component Ⅲ18 installed at the end. When the oil pipe 10 reaches the side discharge port of the main box body 1, it automatically enters the limiting part Ⅰ222 under the action of the guiding part 221 of the oil pipe rack 22, and the inner wall of the oil pipe 10 is cleaned by the inner pipe flushing component Ⅰ14 installed at the end of the auxiliary box body 3; after cleaning, the oil pipe 10 is flipped to the limiting part Ⅱ223 by the flap Ⅱ24 of the oil pipe flipping mechanism Ⅱ17, and is clamped tightly by the drilling clamp 21 to ensure stability when the oil pipe 10 is drilled. The drilling trolley of the drilling mechanism 15 outside the auxiliary box body 3 drives the tool bar to rotate and enter the inner wall of the oil pipe at the same time, allowing the scraping and brushing component to strongly scrape and brush the inner wall of the oil pipe. At the same time, high-temperature hot water is sprayed and washed from the scraping and brushing area, so that impurities such as highly viscous oil, wax oil, and dirt on the inner wall that are difficult to clean are completely detached under the action of the scraping force and discharged from the oil pipe 10 under the action of the flushing water. After the high-temperature brushing and drilling are completed, the oil pipe is flipped into the feeding inclined plane 224 by the flap Ⅰ23 of the oil pipe flipping mechanism Ⅱ17, and the inner wall of the oil pipe is cleaned again with high-temperature hot water by the inner pipe flushing component Ⅱ16 at the end of the auxiliary box body, completely discharging the dirt residue on the inner wall. After cleaning, the oil pipe 10 is flipped by the oil pipe flipping mechanism Ⅰ11 to the discharging and conveying wheel set of the discharging and conveying mechanism 6 against the side wall of the auxiliary box body 3, and is finally output through the discharging port 12 at the end of the auxiliary box body 3. During the outward conveying, the outer wall of the oil pipe 10 is sprayed and washed in all directions by the outer pipe flushing component 8 to wash away the dirt on the outer wall, completing the entire cleaning process.

[0032] The above is a detailed introduction to a main and auxiliary box closed-type oil pipe hot water cleaning device provided by the present utility model. Specific examples are used in this article to elaborate on the structural principle and implementation manner of the present utility model. The above embodiments are only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A main and auxiliary tank closed oil pipe hot water cleaning device, characterized in that: It comprises a main box body and a secondary box body which together with the main box body forms a closed space; A turntable for driving the oil pipe to rotate inside the main box is provided inside the main box, hot water for soaking the oil pipe is provided at the bottom of the main box, and the bottom surface of the auxiliary box is higher than the water level of the hot water; A plurality of evenly distributed slots for accommodating oil pipes are arranged at the circumferential edge of the rotating disk, and a circular oil pipe baffle coaxial with the rotating disk axis is arranged in the main housing; The bottom of the auxiliary box is provided with an oil pipe rack, one end of which is connected to the discharge end of the annular oil pipe baffle, and the oil pipe directly enters the oil pipe rack from the discharge end of the annular oil pipe baffle; The oil pipe rack is provided with a limit part, and the auxiliary box is provided with a drill-through clamp. The oil pipe is pressed and fixed by the drill-through clamp and the limit part, and the oil pipe drilling operation is achieved by the drill-through mechanism.

2. A main and auxiliary tank closed oil pipe hot water cleaning device according to claim 1, characterized in that: The end plate of the main box body is provided with an oil pipe inner flushing component IV before the oil pipe enters the hot water and / or an oil pipe inner flushing component III after the oil pipe leaves the hot water, and an oil pipe outer flushing component for flushing the outer wall of the oil pipe is provided near the outlet of the auxiliary box body.

3. The main and auxiliary tank closed oil pipe hot water cleaning device according to claim 1, characterized in that: The oil pipe rack comprises a rack body, and a guide portion, a limit portion I, a limit portion II, a feed slope and a limit portion III are sequentially arranged on the top of the rack body along the moving direction of the oil pipe; The end plates of the auxiliary box are respectively provided with an oil pipe inner punch assembly I corresponding to the position of the limit part I and an oil pipe inner punch assembly II corresponding to the position of the conveying inclined surface. The drill-through clamp is arranged directly above the limit part II. The drill-through clamp and the limit part II jointly realize the compression and fixation of the oil pipe.

4. A main and auxiliary tank closed oil pipe hot water cleaning device according to claim 3, characterized in that: The oil pipe is moved from the limit part I to the limit part II, from the limit part II to the feeding inclined surface, and from the limit part III to the discharge conveying mechanism, all of which are achieved through the oil pipe turning mechanism.

5. A main and auxiliary tank closed oil pipe hot water cleaning device according to claim 4, characterized in that: The oil pipe flipping mechanism includes a telescopic cylinder, a connecting rod, a rotating shaft and a flap. The telescopic cylinder and the connecting rod are both arranged on the outside of the auxiliary box. One end of the telescopic cylinder is hinged on the auxiliary box, and the other end is hinged to one end of the connecting rod. The other end of the connecting rod is fixed on the rotating shaft. The rotating shaft is installed inside the auxiliary box, and the flap is connected to the rotating shaft.

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