CN111745549A - Oil pipe blast cleaning device - Google Patents

Abstract

A sandblasting cleaning device for oil pipes includes a sand grain storage device, a pressurizing system, a communication pipeline and a spray head. The communication pipeline includes an outer tube and an inner tube arranged inside the outer tube. The oil pipe sandblasting cleaning device of the invention uses the outer pipe and the inner pipe to mix the compressed air and sand particles inside the spray head respectively, and the sand particles carried by the compressed air are uniformly sprayed on the inner surface of the oil pipe to be cleaned through a certain angle and direction. The dirt falls off the inner surface under the impact of high-speed sand particles and is blown to the end of the oil pipe along with the movement of the compressed air and sand particles into the sand particle recovery device to achieve efficient cleaning of all surfaces of the oil pipe and clean the surface after cleaning. Afterwards, the separation and reuse of solid waste and solid waste are realized, the waste treatment volume is small, the use efficiency is improved, the operation cost is reduced, and no harm to the environment is produced.

Description

Oil pipe blast cleaning device

technical field

The invention relates to the technical field of cleaning devices, in particular to a sandblasting cleaning device for oil pipes.

Background technique

After the tubing has been used for a period of time, oil, sand, wax, scale and other dirt will adhere to the surface of the tubing wall, and some working conditions with poor water quality will also cause surface corrosion and scale formation. The dirt formed on the surface of the pipe wall is tightly combined with the pipe body. The traditional cleaning methods are generally high-pressure water gun jet flushing, hot alkaline water immersion flushing cleaning, mechanical scraping cleaning, etc., which not only have low cleaning efficiency, unsatisfactory effect, and large amount of waste water. Wastewater treatment is difficult, environmental protection is not up to standard, and cleaning costs are high.

SUMMARY OF THE INVENTION

The invention provides an oil pipe sandblasting cleaning device for cleaning the inner surface of the oil pipe by mixing sand particles and high-pressure air in the spray head, so as to solve the problems of low efficiency and poor cleaning effect in the existing cleaning methods.

An oil pipe sandblasting cleaning device includes a sand grain storage device, a pressurizing system, a communication pipeline and a spray head, the communication pipeline includes an outer tube and an inner tube arranged inside the outer tube, and the sand grain storage device passes through The inner pipe communicates with the spray head, the pressurization system communicates with the spray head through the gap between the inner pipe and the outer pipe, and the spray head can extend into the oil pipe to be cleaned and It can move freely along the length direction of the oil pipe to be cleaned, and the sand particles in the sand particle storage device and the compressed air in the pressurization system are mixed inside the spray head and then sprayed into the inside of the oil pipe to be cleaned.

The sand grain storage device includes a sand tank and a screw conveying mechanism, one end of the screw conveying mechanism is communicated with the discharge port of the sand tank, and the other end is communicated with the inner pipe.

The screw conveying mechanism includes a conveying pipe, a conveying shaft and a helical blade, the conveying shaft is arranged in the conveying pipe, the helical blade is arranged on the conveying shaft, and the helical blade is driven by the conveying shaft It rotates in the conveying pipe and makes the sand particles in the conveying pipe move to the direction away from the sand tank under the pressing action of the helical blade.

The spray head is a cylindrical structure, the first end of the cylindrical structure is provided with a communication port, the second end of the cylindrical structure is sealed, and the outer tube and the inner tube are both communicated through the The port is communicated with the interior of the cylindrical structure, the peripheral side of the cylindrical structure is provided with an injection hole, one end of the injection hole is communicated with the interior of the cylindrical structure, and the other end of the injection hole is connected to the cylindrical structure. The external communication of the cylindrical structure.

The axis of the injection hole and the axis of the cylindrical structure have an included angle, and the included angle is an acute angle or a right angle.

The number of the injection holes is four, and the four injection holes are annularly distributed on the peripheral side of the cylindrical structure.

The number of the injection holes is eight, and every four injection holes are distributed on the peripheral side of the cylindrical structure in an annular shape, and there is a distance between two adjacent annular rings.

The end of the cylindrical structure is provided with an inner thread, the end of the outer pipe is provided with an outer thread matching the inner thread, the inner pipe extends into the interior of the spray head, and the inner The end of the tube is between the injection hole and the internal thread.

The oil pipe sandblasting cleaning device further includes a distribution joint, the distribution joint is arranged between the outer pipe and the inner pipe, the inner pipe extends into the inside of the spray head through the distribution joint, and the The outer tube communicates with the inside of the spray head through the distribution joint.

The oil pipe sand blasting device further includes a sand particle recovery device. The end of the oil pipe to be cleaned away from the spray head extends into the sand particle recovery device, and the sand particles that have completed the cleaning of the oil pipe to be cleaned are removed by the to-be-cleaned oil pipe. The cleaning tubing flows into the sand recovery device.

The sand recovery device includes a drying mechanism and a vibration mechanism, the outlet of the drying mechanism is communicated with the inlet of the vibration mechanism, and the outlet of the vibration mechanism is communicated with the sand storage device.

The oil pipe sandblasting cleaning device of the invention uses the outer pipe and the inner pipe to mix the compressed air and sand particles inside the spray head respectively, and the sand particles are carried by the compressed air and sprayed uniformly on the inner surface of the oil pipe to be cleaned through a certain angle and direction. The dirt falls off the inner surface under the impact of high-speed sand particles and is blown towards the end of the tubing with the flow of compressed air and the movement of the sand particles into the sand recovery device. The recovered sand and cleaned dirt are in solid state. After desanding by drying, vibration, etc., the solid waste collection, centralized treatment and sand reuse are completed, so as to achieve efficient cleaning of all surfaces of the oil pipe, and the cleaned surface is clean and cleaned. After separation, sand can be separated and reused from solid waste, and the waste disposal volume is small, the use efficiency is improved, the operation cost is reduced, and no harm to the environment is produced.

Description of drawings

Hereinafter, the invention will be described in more detail on the basis of examples and with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of an oil pipe sandblasting cleaning device according to an embodiment of the oil pipe sandblasting cleaning device of the present invention.

2 is a schematic structural diagram of a spray head and a communication pipeline of an embodiment of the oil pipe sandblasting cleaning device of the present invention.

In the drawings, the same components are given the same reference numerals. The drawings are not drawn to actual scale.

1. Sand storage device; 2. Pressurization system; 3. Injection head; 4. Outer pipe; 5. Inner pipe; 6. Injection hole; 7. Distribution joint; 8. Sand recovery device.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

As shown in Figures 1 and 2, the oil pipe sandblasting cleaning device of the present invention includes a sand grain storage device 1, a pressurizing system 2, a communication pipeline and a spray head 3. The communication pipeline includes an outer pipe 4 and a The inner pipe 5 inside the outer pipe 4, the sand storage device 1 communicates with the spray head 3 through the inner pipe 5, and the pressurizing system 2 passes between the inner pipe 5 and the outer pipe 4 The gap is communicated with the spray head 3, and the spray head 3 can extend into the oil pipe to be cleaned and can move freely along the length direction of the oil pipe to be cleaned. The compressed air in the pressurizing system 2 is mixed in the spray head 3 and then sprayed to the inside of the oil pipe to be cleaned, and the compressed air in the pressurizing system 2 is transported into the spray head 3 by the outer pipe 4, 5. The sand is transported into the spray head 3, and the compressed air and the gravel are mixed in the spray head 3, and then sprayed by the spray head 3 to the inner surface of the oil pipe to be cleaned for cleaning, forming a sand throwing effect, the cleaning effect is good, and the dirt Complete cleaning, directly exposing the metal surface without any damage to the metal substrate and thread surface, good environmental protection effect, in the whole cleaning process, except for a small amount of solid waste, no materials or additives that affect environmental protection are added, and the solid waste is collected and processed centrally , No environmental risk, high cleaning efficiency, to complete the cleaning of one oil pipe, only the mixed gas sand should go along the axial direction of the oil pipe wall once, no need for repeated circulation, low cleaning cost, only air and sand are required for cleaning materials, and no other auxiliary materials are required. , can realize the recycling of materials, the sand can be reused after separation, the loss rate is low, the material utilization rate is high, and the compressed air and sand are directly mixed in the spray head 3, avoiding the need to pass through the pipe after the compressed air and sand are mixed. The road causes pressure drop and sand build-up problems.

The sand storage device 1 includes a sand tank and a screw conveying mechanism. One end of the screw conveying mechanism is communicated with the discharge port of the sand tank, and the other end is communicated with the inner pipe 5. The screw conveying mechanism is used to transport the sand tank. The sand is transported to the inside of the inner pipe 5 by the squeezing force, so as to ensure the sufficient supply of the sand in the jet head 3, and avoid the problem that the number of sand cannot be effectively cleaned due to the negative pressure of the compressed air to adsorb the sand in the prior art.

The screw conveying mechanism includes a conveying pipe, a conveying shaft and a helical blade, the conveying shaft is arranged in the conveying pipe, the helical blade is arranged on the conveying shaft, and the helical blade is driven by the conveying shaft It rotates in the conveying pipe and makes the sand particles in the conveying pipe move in the direction away from the sand tank under the extrusion action of the helical blade. The sand provides the power to move in the conveying pipe, so as to ensure that the sand can enter the inner pipe 5 smoothly.

The spray head 3 is a cylindrical structure, the first end of the cylindrical structure is provided with a communication port, the second end of the cylindrical structure is sealed, and the outer tube 4 and the inner tube 5 pass through. The communication port is communicated with the interior of the cylindrical structure, and an injection hole 6 is provided on the peripheral side of the cylindrical structure. One end of the injection hole 6 is communicated with the interior of the cylindrical structure. The other end of 6 is communicated with the outside of the cylindrical structure, and the mixed compressed air and sand particles are sprayed out of the cylindrical structure through the spray hole 6, so as to realize the cleaning of the inner surface of the oil pipe to be cleaned.

The axis of the spray hole 6 has an included angle with the axis of the cylindrical structure, and the included angle is an acute angle or a right angle, so that the mixture of compressed air and sand particles sprayed from the spray hole 6 has a certain angle with the axis of the oil pipe to be cleaned. The included angle and direction can ensure the cleaning effect, and at the same time, the sand particles that have completed the cleaning work can be moved along the oil pipe to be cleaned under the push of the mixture.

The number of the injection holes 6 is four, and the four injection holes 6 are annularly distributed on the peripheral side of the cylindrical structure, that is, the four injection holes 6 are formed on the outer surface of the cylindrical structure. There are four circular holes, and the plane formed by the line connecting the centers of the four circular holes is perpendicular to the axis of the cylindrical structure. In particular, the included angle between the two adjacent injection holes 6 on the plane is 90°.

The number of the injection holes 6 is eight, and every four injection holes 6 are distributed on the peripheral side of the cylindrical structure in a ring shape, and there is a distance between two adjacent rings, and every four The four injection holes 6 form four circular holes on the outer surface of the cylindrical structure, and the plane formed by the line connecting the centers of the four circular holes is perpendicular to the axis of the cylindrical structure, that is to say, the eight injection holes 6 constitute two A plane is formed, and the space is used to enable the jet head 3 to perform two-stage cleaning on the inner surface of the oil pipe to be cleaned, thereby increasing the cleaning effect.

The end of the cylindrical structure is provided with an inner thread, the end of the outer pipe 4 is provided with an outer thread matching the inner thread, the inner pipe 5 extends into the interior of the spray head 3, and The end of the inner pipe 5 is located between the injection hole 6 and the inner thread, that is, the end of the inner pipe 5 is inserted into the injection head 3 so that the end of the inner pipe 5 reaches the injection hole 6 The distance between the end of the outer pipe 4 and the injection hole 6 is smaller than the distance from the end of the outer pipe 4 to the injection hole 6, so that the compressed air first enters the injection head 3 and then mixes with the sand, which can not only ensure an adequate supply of sand, but also ensure that the compressed air and sand After fully mixing, it enters the injection hole 6 .

The oil pipe sandblasting cleaning device further includes a distribution joint 7 , the distribution joint 7 is arranged between the outer pipe 4 and the inner pipe 5 , and the inner pipe 5 extends into the spray through the distribution joint 7 . The inside of the head 3, and the outer pipe 4 is communicated with the inside of the spray head 3 through the distribution joint 7, and the distribution joint 7 is used to support the outer pipe 4 and the inner pipe 5 in the communication position with the spray head 3, and at the same time use the distribution joint 7. The joint 7 directs the compressed air to be directed to each spray hole 6 , so as to make full use of the impact force of the compressed air to realize the spray cleaning effect of the spray head 3 .

The oil pipe sand blasting device also includes a sand particle recovery device 8. The end of the oil pipe to be cleaned away from the jet head 3 extends into the sand particle recovery device 8, and the sand particles that complete the cleaning of the oil pipe to be cleaned are obtained from the sand recovery device 8. The oil pipe to be cleaned flows into the sand recovery device 8, and the sand is separated and sent to the sand storage device 1 for reuse. The sand can be reused, the loss rate is low, and the material utilization rate is high.

The sand recovery device 8 includes a drying mechanism and a vibration mechanism. The outlet of the drying mechanism is communicated with the inlet of the vibration mechanism, and the outlet of the vibration mechanism is communicated with the sand storage device 1. The sand particles and the impurities on the inner surface of the oil pipe to be cleaned are dried to effectively separate the impurities and the sand particles. At the same time, the vibration mechanism is used to separate the sand particles with smaller particle size and the impurities with larger size, thereby realizing the recovery of sand particles.

While the present invention has been described with reference to the preferred embodiments, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (11)

1. The oil pipe sand blasting cleaning device is characterized by comprising a sand storage device, a pressurizing system, a communication pipeline and an injector head, wherein the communication pipeline comprises an outer pipe and an inner pipe arranged inside the outer pipe, the sand storage device is communicated with the injector head through the inner pipe, the pressurizing system is communicated with the injector head through a gap between the inner pipe and the outer pipe, the injector head can stretch into the interior of an oil pipe to be cleaned and can freely move along the length direction of the oil pipe to be cleaned, and sand grains in the sand storage device and compressed air in the pressurizing system are mixed inside the injector head and then are injected into the oil pipe to be cleaned.

2. The oil pipe sand blasting cleaning device according to claim 1, characterized in that: the sand grain storage device comprises a sand tank and a screw rod conveying mechanism, wherein one end of the screw rod conveying mechanism is communicated with a discharge port of the sand tank, and the other end of the screw rod conveying mechanism is communicated with the inner pipe.

3. The oil pipe sand blasting cleaning device according to claim 2, characterized in that: the screw conveying mechanism comprises a conveying pipe, a conveying shaft and a spiral blade, the conveying shaft is arranged in the conveying pipe, the spiral blade is arranged on the conveying shaft, the spiral blade is driven by the conveying shaft to rotate in the conveying pipe, and sand grains in the conveying pipe move in the direction far away from the sand tank under the extrusion effect of the spiral blade.

4. The oil pipe sand blasting cleaning device according to claim 1, characterized in that: the injection head is of a cylindrical structure, a communication port is formed in the first end of the cylindrical structure, the second end of the cylindrical structure is arranged in a sealing mode, the outer pipe and the inner pipe are communicated with the inside of the cylindrical structure through the communication port, injection holes are formed in the peripheral side face of the cylindrical structure, one ends of the injection holes are communicated with the inside of the cylindrical structure, and the other ends of the injection holes are communicated with the outside of the cylindrical structure.

5. The oil pipe sand blasting cleaning device according to claim 4, wherein: the axis of the injection hole and the axis of the cylindrical structure form an included angle, and the included angle is an acute angle or a right angle.

6. The oil pipe sand blasting cleaning device according to claim 4, wherein: the number of the injection holes is four, and the four injection holes are annularly distributed on the peripheral side face of the cylindrical structure.

7. The oil pipe sand blasting cleaning device according to claim 4, wherein: the number of the injection holes is eight, every four injection holes are distributed on the peripheral side face of the cylindrical structure in an annular mode, and a space is reserved between every two adjacent annular injection holes.

8. The oil pipe sand blasting cleaning device according to claim 4, wherein: the tip of cylindric structure is provided with the internal thread, the tip of outer tube be provided with internal thread assorted external screw thread, the inner tube stretches into the inside of injector head, just the tip of inner tube be in the jet orifice with between the internal thread.

9. The oil pipe sand blasting cleaning device according to claim 8, characterized in that: the oil pipe sandblast belt cleaning device still includes the distribution and connects, the distribution connect set up in the outer tube with between the inner tube, the inner tube passes through the distribution connects and stretches into inside the injector head, just the outer tube passes through the distribution connect with the inside intercommunication of injector head.

10. The oil pipe sand blasting cleaning device according to claim 1, characterized in that: the oil pipe sand blasting device further comprises a sand grain recovery device, wherein one end, far away from the injector head, of the oil pipe to be cleaned extends into the sand grain recovery device, and sand grains which finish the cleaning work of the oil pipe to be cleaned flow into the sand grain recovery device from the oil pipe to be cleaned.

11. The tubing sand blasting cleaning device according to claim 10, wherein: the sand recovery device comprises a drying mechanism and a vibrating mechanism, wherein an outlet of the drying mechanism is communicated with an inlet of the vibrating mechanism, and an outlet of the vibrating mechanism is communicated with the sand storage device.

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