Automatic sand blasting equipment for oil casing

Abstract

The utility model discloses automatic sand blasting equipment for an oil casing, which relates to the technical field of sand blasting equipment and comprises a sand blasting machine, a protective plug device, a conveying device, a lifting device and a rotating device arranged on the lifting device. The conveying device is used for conveying an oil casing to the rotating device, the lifting device is used for jacking the rotating device to jack up the oil casing, the carrying mechanism is used for carrying a protective plug to a pipe opening of the oil casing so that the protective plug can plug the pipe opening of the oil casing, and the rotating device is used for driving the oil casing and the protective plug to synchronously rotate with the axis of the oil casing as a rotating shaft. And a spray head of the sand blasting machine is used for performing linear motion in the direction of the axis of the oil casing and performing sand blasting treatment on the rotating oil casing. According to the automatic sand blasting equipment for the oil casing, automatic sand blasting is realized, the labor intensity is reduced, and the working efficiency and the sand blasting consistency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sandblasting equipment, in particular to an automatic sandblasting equipment for oil casing pipes. Background Art

[0002] Oil casing pipes, also known as petroleum casing pipes, are mainly used for supporting the wellbore during drilling and after well completion to ensure the progress of the drilling process and the normal operation of the entire oil well after well completion. According to the usage requirements of oil casing pipes, the threaded section of the oil casing pipes needs to be sandblasted to improve the mechanical properties of its surface and enhance the fatigue resistance of the oil casing pipes.

[0003] In traditional sandblasting equipment, workers mainly install a protective plug at the end of the oil casing pipe manually to prevent sand and gravel from entering the interior of the oil casing pipe. After the oil casing pipe enters the sandblasting machine, workers need to manually adjust the position of the oil casing pipe according to the position of the nozzle of the sandblasting machine. This process not only has a high labor intensity and low work efficiency, but also the consistency of sandblasting is uneven, affecting the appearance and subsequent processing, and ultimately affecting the quality of the oil casing pipe. Summary of the Utility Model

[0004] Aiming at the above-mentioned defects existing in the prior art, the utility model provides an automatic sandblasting equipment for oil casing pipes, which realizes automatic sandblasting, reduces the labor intensity, and improves the work efficiency and sandblasting consistency.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An automatic sandblasting equipment for oil casing pipes includes a sandblasting machine, and also includes a protective plug device, a conveying device, a lifting device and a rotating device arranged on the lifting device. The protective plug device includes a handling mechanism and a protective plug rotatably arranged on the handling mechanism. The conveying device is used to convey the oil casing pipe to the rotating device. The lifting device is used to lift the rotating device to lift the oil casing pipe. The handling mechanism is used to carry the protective plug to the pipe orifice of the oil casing pipe so that the protective plug plugs the pipe orifice. The rotating device is used to drive the oil casing pipe and the protective plug to rotate synchronously with the axis of the oil casing pipe as the rotation axis. The nozzle of the sandblasting machine is used to perform linear motion along the direction where the axis of the oil casing pipe is located and sandblast the rotating oil casing pipe.

[0007] Wherein, a rack and pinion linear motion mechanism is arranged on the frame of the sandblasting machine, and the nozzle is arranged on the rack and pinion linear motion mechanism.

[0008] Wherein, the rack and pinion linear motion mechanism includes a rack fixedly arranged on the frame, a rotation driving part slidably arranged on the frame, and a pinion arranged on the rotation driving part and meshing with the rack. The nozzle is arranged on the rotation driving part.

[0009] Among them, the gear-rack linear motion mechanism includes a rotary driving member fixedly arranged on the frame, a gear arranged on the rotary driving member, and a rack slidably arranged on the frame and meshing with the gear, and the spray head is arranged on the rack.

[0010] Among them, a spray head adjusting frame is arranged on the gear-rack linear motion mechanism, and the spray head is arranged on the spray head adjusting frame.

[0011] Among them, the handling mechanism includes a first lead screw transmission mechanism for driving the plug to move in the left-right direction, a second lead screw transmission mechanism arranged on the first lead screw transmission mechanism and for driving the plug to move in the front-rear direction, and a third lead screw transmission mechanism arranged on the second lead screw transmission mechanism and for driving the plug to move in the up-down direction, and the plug is rotatably arranged on the third lead screw transmission mechanism.

[0012] Among them, the plug is rotatably arranged on the third lead screw transmission mechanism through a bearing.

[0013] Among them, the conveying device includes a conveying frame and a conveying roller path arranged on the conveying frame, and the conveying roller path is composed of a plurality of conveying rollers rotatably arranged on the conveying frame.

[0014] Among them, the rotating device includes a bracket arranged on the lifting device, and a plurality of rotating rollers arranged on opposite sides of the bracket and driven by a power device to rotate synchronously, and the axis of the rotating roller is perpendicular to the axis of the conveying roller.

[0015] Among them, a detection device for detecting the sandblasting start position and sandblasting end position of the spray head is arranged on the sandblasting machine.

[0016] Adopting the above technical solution, the beneficial effects of the present utility model are:

[0017] The automatic oil casing sandblasting equipment provided by the present utility model conveys the oil casing to the rotating device through the conveying device, jacks up the rotating device through the lifting device to jack up the oil casing, transports the plug to the pipe orifice of the oil casing through the handling mechanism so that the plug plugs the pipe orifice of the oil casing, drives the oil casing and the plug to rotate synchronously with the axis of the oil casing as the rotation axis through the rotating device, and then performs sandblasting treatment on the rotating oil casing through the spray head of the sandblasting machine, realizing the automatic sandblasting of the oil casing. This process does not require manual participation, not only greatly reducing the labor intensity, but also improving the work efficiency and sandblasting consistency, and ensuring the processing quality of the oil casing. Description of the Drawings

[0018] Figure 1It is a schematic structural diagram of the automatic sandblasting equipment for oil casing of the present utility model;

[0019] Figure 2 It is another schematic structural diagram of the automatic sandblasting equipment for oil casing of the present utility model;

[0020] In the figure: 1. Plug guard; 2. Oil casing; 3. Nozzle; 4. Rack; 5. Rotation driving part; 6. Gear; 7. Slide rail; 8. Nozzle adjusting frame; 9. First lead screw transmission mechanism; 10. Second lead screw transmission mechanism; 11. Third lead screw transmission mechanism; 12. Support arm; 13. Conveyor roller; 14. Rotating roller; 15. Photoelectric switch. Specific implementation manners

[0021] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] As Figure 1 shown, this embodiment discloses an automatic sandblasting equipment for oil casing, which includes a sandblasting machine, and also includes a plug guard device, a conveying device, a lifting device and a rotating device arranged on the lifting device. The plug guard device includes a handling mechanism and a plug guard 1 rotatably arranged on the handling mechanism. The conveying device is used to convey the oil casing 2 to the rotating device. The lifting device is used to lift the rotating device to lift the oil casing 2. The handling mechanism is used to carry the plug guard 1 to the pipe orifice of the oil casing 2 so that the plug guard 1 blocks the pipe orifice of the oil casing 2. The rotating device is used to drive the oil casing 2 and the plug guard 1 to rotate synchronously with the axis of the oil casing 2 as the rotation axis. The nozzle 3 of the sandblasting machine is used to move linearly along the direction where the axis of the oil casing 2 is located and perform sandblasting treatment on the rotating oil casing 2.

[0023] The automatic sandblasting equipment for oil casing in this embodiment conveys the oil casing 2 to the rotating device through the conveying device, lifts the rotating device through the lifting device to lift the oil casing 2, carries the plug guard 1 to the pipe orifice of the oil casing 2 through the handling mechanism so that the plug guard 1 blocks the pipe orifice of the oil casing 2, drives the oil casing 2 and the plug guard 1 to rotate synchronously with the axis of the oil casing 2 as the rotation axis through the rotating device, and then performs sandblasting treatment on the rotating oil casing 2 through the nozzle 3 of the sandblasting machine, realizing the automatic sandblasting of the oil casing 2. This process does not require manual participation, which not only greatly reduces the labor intensity, but also improves the work efficiency and sandblasting consistency, and ensures the processing quality of the oil casing 2.

[0024] In this embodiment, a rack of the sandblasting machine is provided with a rack and pinion linear motion mechanism, and the nozzle 3 is arranged on the rack and pinion linear motion mechanism. The rack and pinion linear motion mechanism drives the nozzle 3 to reciprocate linearly, improving the linearity, stability and reliability of the movement of the nozzle 3, and ensuring the accuracy of the sandblasting treatment of the casing 2 by the nozzle 3.

[0025] The rack and pinion linear motion mechanism in this embodiment includes a rack 4 fixedly arranged on the rack, a rotary driving member 5 slidably arranged on the rack, and a gear 6 arranged on the rotary driving member 5 and meshing with the rack 4. The nozzle 3 is arranged on the rotary driving member 5.

[0026] Of course, the rack and pinion linear motion mechanism can also be arranged as Figure 2 shown. The rack and pinion linear motion mechanism includes a rotary driving member 5 fixedly arranged on the rack, a gear 6 arranged on the rotary driving member 5, and a rack 4 slidably arranged on the rack and meshing with the gear 6. The nozzle 3 is arranged on the rack 4.

[0027] In order to ensure the linearity of the movement of the rotary driving member 5 or the rack 4, a slide rail 7 is arranged on the rack in this embodiment, and the rotary driving member 5 or the rack 4 is arranged on the slider of the slide rail 7.

[0028] The rotary driving member 5 in this embodiment is a motor. Of course, a rotary cylinder can also be used, which is specifically selected according to actual needs, and this embodiment does not limit this.

[0029] In order to keep the nozzle 3 at an appropriate distance from the casing 2, a nozzle adjusting frame 8 for adjusting the length of the nozzle 3 is arranged on the rack and pinion linear motion mechanism, and the nozzle 3 is arranged on the nozzle adjusting frame 8 to ensure the sandblasting processing quality of the casing 2.

[0030] Specifically, the nozzle adjusting frame 8 is arranged on Figure 1 the rotary driving member 5 shown or Figure 2 the rack 4 shown.

[0031] The handling mechanism in this embodiment includes a first lead screw transmission mechanism 9 for driving the plug 1 to move in the left - right direction, a second lead screw transmission mechanism 10 arranged on the first lead screw transmission mechanism 9 and for driving the plug 1 to move in the front - back direction, and a third lead screw transmission mechanism 11 arranged on the second lead screw transmission mechanism 10 and for driving the plug 1 to move in the up - down direction. The plug 1 is rotatably arranged on the third lead screw transmission mechanism 11. Through the mutual cooperation of the first lead screw transmission mechanism 9, the second lead screw transmission mechanism 10 and the third lead screw transmission mechanism 11, the handling of the plug 1 is realized, thus meeting the position requirements of the plug 1.

[0032] Since the lead screw drive mechanism (i.e., the lead screw nut drive mechanism) is a common rotary-to-linear motion mechanism in the prior art, the structures of the first lead screw drive mechanism 9, the second lead screw drive mechanism 10, and the third lead screw drive mechanism 11 in this embodiment will not be described in detail herein.

[0033] In this embodiment, the protective plug 1 is rotatably arranged on the third lead screw drive mechanism 11 through a bearing. With such an arrangement, the friction coefficient of the protective plug 1 during rotation is reduced, and the rotational accuracy of the protective plug 1 is ensured.

[0034] Specifically, a support arm 12 is provided on the nut of the third lead screw drive mechanism 11, and the protective plug 1 is rotatably arranged on the support arm 12 through a bearing.

[0035] The conveying device in this embodiment includes a conveying frame and a conveying roller path arranged on the conveying frame, and the conveying roller path is composed of a plurality of conveying rollers 13 rotatably arranged on the conveying frame.

[0036] All the conveying rollers 13 in this embodiment are driven by a motor, and the motor is connected to all the conveying rollers 13 through a belt drive mechanism. Of course, it can also be connected through a chain drive mechanism, and this embodiment does not make any restrictions in this regard.

[0037] The lifting device in this embodiment adopts a telescopic hydraulic cylinder. Of course, a telescopic air cylinder can also be used, and the specific choice is made according to actual requirements. This embodiment does not make any restrictions in this regard.

[0038] The rotating device in this embodiment includes a bracket arranged on the lifting device, and a plurality of rotating rollers 14 arranged on opposite sides of the bracket and driven by a power device to rotate synchronously. The axis of the rotating roller 14 is perpendicular to the axis of the conveying roller 13.

[0039] The power device in this embodiment adopts a motor. A plurality of rotating rollers 14 on one side of the bracket are arranged on the same transmission shaft, and a plurality of rotating rollers 14 on the other side of the bracket are arranged on another transmission shaft. The motor drives the two transmission shafts to rotate synchronously through a belt drive mechanism or a chain drive mechanism, thereby realizing the synchronous rotation of the plurality of rotating rollers 14 on opposite sides of the bracket, and then driving the oil casing 2 to rotate.

[0040] In this embodiment, a detection device for detecting the sandblasting start position and the sandblasting end position of the nozzle 3 is provided on the frame of the sandblaster. With such an arrangement, the accuracy of sandblasting of the nozzle 3 is improved.

[0041] The detection device in this embodiment includes two photoelectric switches 15 arranged at intervals. One photoelectric switch 15 is used to detect the sandblasting start position, and the other photoelectric switch 15 is used to detect the sandblasting end position.

[0042] Before use, first adjust the positions of the two photoelectric switches 15 according to the specifications of the casing 2 so that the distance between them is equal to the length of the threaded section of the casing 2; adjust the nozzle 3 in place through the nozzle adjusting frame 8 so that the nozzle 3 maintains an appropriate distance from the threaded section of the casing 2; adjust the plug 1 in place through the handling mechanism so that the plug 1 and the lifted casing 2 are on the same axis.

[0043] During use, the conveying device conveys the casing 2 onto the rotating device, the lifting device jacks up the rotating device to jack up the casing 2 in place, the handling mechanism transports the plug 1 to the pipe opening of the casing 2 to block the pipe opening of the casing 2, and then the rotating device drives the casing 2 and the plug 1 to rotate synchronously around the axis of the casing 2 as the rotation axis, and the nozzle 3 of the sandblasting machine moves linearly along the direction where the axis of the casing 2 is located under the drive of the rack and pinion linear motion mechanism and performs sandblasting on the threaded section of the rotating casing 2.

[0044] The above is only a preferred embodiment of the automatic sandblasting equipment for casings of the present utility model, and there are more embodiments which will not be elaborated here. To sum up, the automatic sandblasting equipment for casings of the present utility model realizes the automatic sandblasting of the casing 2, not only greatly reducing the labor intensity, but also improving the work efficiency and sandblasting consistency, and ensuring the processing quality of the casing 2.

[0045] The present utility model is not limited to the above specific embodiments. All kinds of transformations made by those of ordinary skill in the art starting from the above concepts without creative labor fall within the protection scope of the present utility model.

Claims

1. An automatic sandblasting device for oil casing pipes, including a sandblasting machine, characterized in that, It further includes a plugging protection device, a conveying device, a lifting device, and a rotating device arranged on the lifting device. The plugging protection device includes a handling mechanism and a plugging protection member rotatably arranged on the handling mechanism. The conveying device is used to convey the oil casing to the rotating device. The lifting device is used to lift the rotating device to jack up the oil casing. The handling mechanism is used to move the plugging protection member to the pipe opening of the oil casing so that the plugging protection member plugs the pipe opening. The rotating device is used to drive the oil casing and the plugging protection member to rotate synchronously with the axis of the oil casing as the rotation axis. The nozzle of the sandblasting machine is used to perform linear motion along the direction where the axis of the oil casing is located and perform sandblasting treatment on the rotating oil casing.

2. The automatic sandblasting equipment for oil casing according to claim 1, characterized in that, A rack and pinion linear motion mechanism is arranged on the frame of the sandblasting machine, and the nozzle is arranged on the rack and pinion linear motion mechanism.

3. The automatic sandblasting equipment for oil casing according to claim 2, characterized in that, The rack and pinion linear motion mechanism includes a rack fixedly arranged on the frame, a rotation driving member slidably arranged on the frame, and a pinion arranged on the rotation driving member and meshing with the rack. The nozzle is arranged on the rotation driving member.

4. The automatic sandblasting equipment for oil casing according to claim 2, characterized in that, The rack and pinion linear motion mechanism includes a rotation driving member fixedly arranged on the frame, a pinion arranged on the rotation driving member, and a rack slidably arranged on the frame and meshing with the pinion. The nozzle is arranged on the rack.

5. The automatic sandblasting equipment for oil casing according to claim 2, characterized in that, A nozzle adjusting frame is arranged on the rack and pinion linear motion mechanism, and the nozzle is arranged on the nozzle adjusting frame.

6. The automatic sandblasting equipment for oil casing according to claim 1, characterized in that, The handling mechanism includes a first lead screw transmission mechanism for driving the plugging protection member to move in the left-right direction, a second lead screw transmission mechanism arranged on the first lead screw transmission mechanism and for driving the plugging protection member to move in the front-back direction, and a third lead screw transmission mechanism arranged on the second lead screw transmission mechanism and for driving the plugging protection member to move in the up-down direction. The plugging protection member is rotatably arranged on the third lead screw transmission mechanism.

7. The automatic sandblasting equipment for oil casing according to claim 6, characterized in that, The plugging protection member is rotatably arranged on the third lead screw transmission mechanism through a bearing.

8. The automatic sandblasting equipment for oil casing according to claim 1, characterized in that, The conveying device includes a conveying frame and a conveying roller path arranged on the conveying frame. The conveying roller path is composed of a plurality of conveying rollers rotatably arranged on the conveying frame.

9. The automatic sandblasting equipment for oil casing according to claim 8, characterized in that The rotating device includes a bracket arranged on the lifting device, and a plurality of rotating rollers arranged on opposite sides of the bracket and driven by a power device to rotate synchronously. The axis of the rotating roller is perpendicular to the axis of the conveying roller.

10. The automatic sandblasting equipment for oil casing according to claim 1, characterized in that A detection device for detecting the sandblasting starting position and sandblasting ending position of the nozzle is arranged on the sandblasting machine.

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