An oxide layer treatment device for oil casing head processing

Abstract

The present invention relates to the field of sandblasting technology, and in particular to an oxide layer treatment device for processing petroleum casing heads. It comprises a fixed frame, the fixed frame is provided with a sandblasting pipeline, the sandblasting pipeline is fixedly connected with a rotating ring, a symmetrically distributed first hydraulic telescopic rod and a symmetrically distributed second hydraulic telescopic rod, the rotating ring is fixedly connected with a symmetrically distributed first elastic telescopic rod, the rotating ring is fixedly connected with a symmetrically distributed first sandblasting sleeve, and the sandblasting pipeline is rotatably connected with a progressive member. The present invention detects the diameter change in the casing head through the telescopic end of the first elastic telescopic rod. When the inner diameter of the casing head changes, the telescopic end of the adjacent first sandblasting sleeve is driven to move by the telescopic end of the second hydraulic telescopic rod, and the distance between the first sandblasting sleeve and the inner wall of the casing head is adjusted accordingly, so as to prevent the sandblasting from being too dispersed or concentrated due to the unchanged spraying position when the inner diameter of the casing head changes, thereby affecting the sandblasting effect.

Description

Technical Field

[0001] The invention relates to the technical field of sandblasting, in particular to an oxide layer processing device for processing a petroleum casing head. Background Art

[0002] There are various types of equipment for treating the oxide layer of oil casing heads. Among them, the sandblasting process is very effective in removing impurities such as dirt, oxide layer and coating on oil casing heads. Sandblasting refers to the use of high-pressure gas or liquid to spray sand onto the casing head, so that a high-speed abrasive flow is formed on the casing head to grind away impurities such as the oxide layer on the inner surface of the casing head, thereby achieving the purpose of cleaning the oxide layer on the surface of the casing head.

[0003] However, in order to adapt to different fluid pressures and flow rates, the inside of the oil casing head is usually variable in diameter during actual use and is not completely straight. This causes the distance between the sandblasting port and the casing head to continuously change when the existing sandblasting equipment is sandblasting the inside of the variable diameter casing head, resulting in continuous changes in the sandblasting intensity and sandblasting scattering area of ​​the inner wall of the casing head, which in turn causes uneven treatment of the oxide layer on the inner wall of the casing head.

[0004] Therefore, it is urgent to develop an oxide layer treatment equipment for oil casing head processing. Summary of the invention

[0005] In order to overcome the disadvantage that the distance between the sandblasting port and the casing head changes continuously, resulting in the continuous change of the sandblasting intensity and the sandblasting scattering area of ​​the inner wall of the casing head, the present invention provides an oxide layer processing device for processing petroleum casing heads.

[0006] The technical solution of the present invention is: an oxide layer treatment device for processing oil casing heads, comprising a fixed frame, the fixed frame is provided with a sandblasting pipeline, the fixed frame is provided with a first electric slide rail evenly distributed in the circumferential direction, a first electric slider is slidably connected in the first electric slide rail of the fixed frame, a centering block is fixedly connected to the first electric slider, the fixed frame is slidably connected to a second electric slider rotatably connected to the sandblasting pipeline through the electric slide rail, the fixed frame is slidably connected to a sliding block, a first motor is fixedly connected to the sandblasting pipeline, a speed change component for adjusting the speed of the sandblasting pipeline is provided on the sandblasting pipeline, and a centering block is fixedly connected to the first electric slide rail. There are a rotating ring, a symmetrically distributed first hydraulic telescopic rod and a symmetrically distributed second hydraulic telescopic rod, the first hydraulic telescopic rod is connected to the corresponding second hydraulic telescopic rod through a conduit, the rotating ring is fixedly connected with symmetrically distributed first elastic telescopic rods, the telescopic ends of the first elastic telescopic rods are fixedly connected to the telescopic ends of the adjacent first hydraulic telescopic rods, the rotating ring is fixedly connected with symmetrically distributed first sandblasting sleeves that are connected to the sandblasting pipeline through the first sandblasting sleeves, the telescopic ends of the first sandblasting sleeves are fixedly connected to the telescopic ends of the adjacent second hydraulic telescopic rods, and the sandblasting pipeline is rotatably connected to one end away from the fixed frame with a progressive member connected thereto.

[0007] Furthermore, a truncated cone rod is fixedly connected inside the first sandblasting sleeve, and the diameter of the truncated cone rod gradually decreases from the side close to the rotating ring to the side away from the rotating ring. The truncated cone rod is used to adjust the sand flow rate of the through hole on the telescopic end of the first sandblasting sleeve. The sandblasting pipe is rotatably connected and connected to a collecting pipe, and the inner diameter of the collecting pipe gradually increases from the side close to the sandblasting pipe to the side away from the sandblasting pipe. The collecting pipe is slidably connected to a limit plate, and an elastic member is fixed between the collecting pipe and the limit plate.

[0008] Furthermore, the telescopic end of the first elastic telescopic rod is rotatably connected to a rotating wheel, and a round table surface is provided on one side of the rotating wheel close to the traveling direction of the sandblasting pipeline.

[0009] Furthermore, the symmetrically distributed rotating wheels and the symmetrically distributed first sandblasting sleeves are alternately distributed, and the symmetrically distributed rotating wheels and the symmetrically distributed first sandblasting sleeves are both located on the same vertical plane.

[0010] Furthermore, the speed change assembly includes a connecting frame with a central symmetrical distribution, the connecting frame is fixedly connected to the telescopic end of the adjacent first hydraulic telescopic rod, the connecting frame is slidably connected to a sliding rod on the side close to the sandblasting pipe, the sliding rod is fixedly connected to a rack on the side close to the sandblasting pipe, the sandblasting pipe is rotatably connected to a gear at a position close to the rack on the sliding rod, the rack of the sliding rod is meshed with the gear of the sandblasting pipe, the gear of the sandblasting pipe is fixedly connected to a rotating telescopic rod rotatably connected to the sandblasting pipe, and the rotating telescopic rod and the output shaft of the first motor are transmitted through a speed change gear set.

[0011] Furthermore, a spring is fixed between the connecting frame and the rack on the adjacent sliding rod, there is resistance between the sandblasting pipe and its gear, and the resistance between the sandblasting pipe and its gear is greater than the elastic force of the spring, but the resistance between the sandblasting pipe and its gear is less than the sum of the elastic forces of the two springs, and a pressure sensor for periodically monitoring pressure changes is installed between the connecting frame and the adjacent spring.

[0012] Furthermore, it also includes symmetrically distributed second sandblasting sleeves, which are symmetrically distributed and are all rotatably connected to the progressive member, the second sandblasting sleeves are communicated with the progressive member, and the progressive member is slidably connected to a symmetrically distributed third electric slider through a third electric slide rail, a second elastic telescopic rod is fixedly connected to the third electric slider, and a connecting rod rotatably connected to the telescopic end of the second elastic telescopic rod is fixedly connected to the adjacent second sandblasting sleeve.

[0013] Furthermore, the second sandblasting sleeve is parallel to the adjacent second elastic telescopic rod and is located at the same horizontal height.

[0014] Furthermore, a blocking pipe is slidably connected in the sandblasting pipe, the telescopic end of the second elastic telescopic rod is fixedly connected to the blocking pipe by a flexible rope, the flexible rope of the telescopic end of the second elastic telescopic rod passes through the adjacent third electric slider and the progressive member, an elastic member is fixedly connected between the sandblasting pipe and the blocking pipe, the blocking pipe is provided with symmetrically distributed through holes, the through holes of the blocking pipe are connected and cooperated with the connecting part of the first sandblasting sleeve and the sandblasting pipe, the connecting part of the first sandblasting sleeve and the sandblasting pipe is blocked and cooperated with the blocking pipe, a blocking rod that is blocked and cooperated with the blocking pipe is fixedly connected in the progressive member, the diameter of the blocking rod gradually increases from the side away from the blocking pipe to the side close to the blocking pipe, a blocking block is fixedly connected in the second sandblasting sleeve, the blocking block is used to control the connected state of the adjacent second sandblasting sleeve, a sandblasting channel is provided in the blocking block, and the sandblasting channel is blocked and cooperated with the telescopic end of the second sandblasting sleeve.

[0015] Furthermore, a second motor is fixedly connected to the progressive member, a rotating shaft is fixedly connected to the telescopic end of the second motor, the rotating shaft of the second motor is rotatably connected to the progressive member, the second sandblasting sleeve and the rotating shaft of the second motor output shaft are transmitted via a spur gear set, a rotating shaft is rotatably connected to the progressive member, the rotating shaft of the second motor output shaft and the rotating shaft are transmitted via a bevel gear set, and the connecting rod and the rotating shaft are fixedly connected via a connecting rope.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention detects the diameter change in the casing head through the telescopic end of the first elastic telescopic rod. When the inner diameter of the casing head changes, the telescopic end of the adjacent first sandblasting casing is driven to move by the telescopic end of the second hydraulic telescopic rod, and the distance between the first sandblasting casing and the inner wall of the casing head is adjusted accordingly, so as to prevent the sandblasting from being too dispersed or concentrated due to the unchanged spraying position when the inner diameter of the casing head changes, thereby affecting the sandblasting effect;

[0017] 2. The present invention adjusts the sandblasting amount of the first sandblasting sleeve by means of a truncated cone rod. When the inner diameter of the sleeve head changes, the telescopic end of the first sandblasting sleeve moves to change the gap between its through hole and the adjacent truncated cone rod, and the spraying amount at different inner diameters is adaptively adjusted;

[0018] 3. The present invention adjusts the rotation speed of the first sandblasting sleeve during sandblasting by means of a speed change gear set. When the inner diameter of the sleeve head changes, the transmission ratio of the speed change gear set gradually changes, and the rotation speed of the sandblasting pipe is adjusted, so that the rotation speed of the first sandblasting sleeve during sandblasting changes, thereby avoiding a decrease in sandblasting efficiency when the rotation speed of the first sandblasting sleeve does not change but the circumferential sandblasting area of ​​the sleeve head changes;

[0019] 4. The present invention sandblasts other flow positions of the four-way casing head by moving and rotating the second sandblasting casing, avoiding the need for multiple sandblasting operations on multiple channels of the casing head, thereby improving the sandblasting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the sandblasting pipeline of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the centering block of the present invention;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the progressive member of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating ring of the present invention;

[0025] Figure 6 It is a three-dimensional structural cross-sectional view of the collecting pipeline of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating wheel of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the connecting frame of the present invention;

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the spring of the present invention;

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the connecting rod of the present invention;

[0030] Fig.11 It is a three-dimensional structural cross-sectional view of the progressive member of the present invention;

[0031] Fig.12 It is a sectional view of the three-dimensional structure of the pipeline plugging device of the present invention;

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the rotating shaft of the present invention.

[0033] Parts names and serial numbers in the figure: 1-fixed frame, 101-sandblasting pipe, 102-first electric slider, 103-centering block, 104-second electric slider, 105-sliding block, 106-first motor, 107-rotating ring, 108-first elastic telescopic rod, 109-first hydraulic telescopic rod, 110-second hydraulic telescopic rod, 111-first sandblasting sleeve, 112-progressive member, 2-round table rod, 201-collecting pipe, 202-limiting plate, 3-rotating wheel, 5-connecting frame, 501-sliding rod, 502-rotating telescopic rod, 6-spring, 7-second sandblasting sleeve, 701-third electric slider, 702-second elastic telescopic rod, 703-connecting rod, 9-blocking pipe, 901-blocking rod, 902-blocking block, 903-sandblasting channel, 10-second motor, 1001-rotating shaft, 1002-connecting rope. DETAILED DESCRIPTION

[0034] The preferred technical solutions of the present invention are described in detail below with reference to the accompanying drawings.

[0035] The inside of the petroleum casing head is usually a variable diameter structure. Therefore, when sandblasting the inside of the variable diameter casing head, the distance between the sandblasting port and the casing head will continue to change, which will easily lead to continuous changes in the sandblasting intensity and sandblasting scattering area of ​​the inner wall of the casing head, thereby causing uneven treatment of the oxide layer on the inner wall of the casing head.

[0036] Embodiment 1: An oxide layer treatment device for oil casing head processing, such as Figure 1-Figure 5 As shown, it includes a fixing frame 1, a control panel not shown in the figure is arranged outside the fixing frame 1, a sandblasting pipe 101 passing through the fixing frame 1 is arranged, the sandblasting pipe 101 is connected to an external high-pressure injection device, and is used to inject sand into the sandblasting pipe 101 under high pressure, and three first electric slide rails evenly distributed in the circumferential direction are arranged on the fixing frame 1, a first electric slider 102 is slidably connected in the first electric slide rail of the fixing frame 1, the first electric slider 102 is electrically connected to the control panel, and a centering block 103 is fixed to the first electric slider 102, and the three centering blocks 103 move synchronously to ensure that the sandblasting pipe 101 is always located in the circular center of the casing head when the three centering blocks 103 are clamped on the casing head. The fixed frame 1 is slidably connected to a second electric slider 104 rotatably connected to the sandblasting pipe 101 through a second electric slide rail, and the second electric slider 104 is electrically connected to the control panel. The second electric slider 104 is used to keep the sandblasting pipe 101 at the center of the circle of the fixed frame 1. The left side of the fixed frame 1 is slidably connected to a sliding block 105 through a third electric slide rail, and the sliding block 105 is electrically connected to the control panel. A first motor 106 electrically connected to the control panel is fixedly connected to the sandblasting pipe 101, and the sliding block 105 is used to drive the first motor 106 to move up and down. A speed change group for adjusting the speed of the sandblasting pipe 101 is provided near the first motor 106. The sandblasting pipe 101 is fixedly connected with a rotating ring 107, a first hydraulic telescopic rod 109 symmetrically distributed up and down, and a second hydraulic telescopic rod 110 symmetrically distributed front and back. The first hydraulic telescopic rod 109 is connected with the corresponding second hydraulic telescopic rod 110 through a conduit. The rotating ring 107 is fixedly connected with a first elastic telescopic rod 108 symmetrically distributed up and down. The telescopic end of the first elastic telescopic rod 108 is fixedly connected with the telescopic end of the adjacent first hydraulic telescopic rod 109. The telescopic end of the first elastic telescopic rod 108 is in close contact with the inner wall of the casing head for detecting the inner diameter of the casing. When the telescopic end of the first elastic telescopic rod 108 moves, the telescopic end of the first elastic telescopic rod 108 drives the corresponding The telescopic end of the adjacent first hydraulic telescopic rod 109 moves, and the first hydraulic telescopic rod 109 squeezes its internal hydraulic oil into the corresponding second hydraulic telescopic rod 110 through the conduit. The rotating ring 107 is fixed with a first sandblasting sleeve 111 which is symmetrically distributed front and back and is connected to the sandblasting pipe 101 through it. The telescopic end of the first sandblasting sleeve 111 is fixed with the telescopic end of the adjacent second hydraulic telescopic rod 110. The left end of the sandblasting pipe 101 is rotatably connected to a progressive member 112 connected thereto, wherein the progressive member 112 is composed of a shell connected to the sandblasting pipe 101, an elastic telescopic rod and a progressive wheel, and the elastic telescopic rod of the progressive member 112 is used to control its progressive wheel to fit against the inner wall of the sleeve head.

[0037] like Figure 2 , Figure 6 and Figure 7As shown, a truncated cone rod 2 is fixedly connected inside the first sandblasting sleeve 111, and the diameter of the truncated cone rod 2 gradually decreases from a position close to the rotating ring 107 to a position away from the rotating ring 107. The truncated cone rod 2 is used to adjust the sand flow rate of the through hole on the telescopic end of the first sandblasting sleeve 111. The telescopic end of the first sandblasting sleeve 111 moves to align its through hole with different diameters of adjacent truncated cone rods 2, thereby changing the size of the gap between the through hole at the telescopic end of the first sandblasting sleeve 111 and the adjacent truncated cone rods 2. A collecting pipe 201 is rotatably connected and connected to the sandblasting pipe 101, and the collecting pipe 201 is connected to an external collecting device. The inner diameter of the collecting pipe 201 gradually increases from bottom to top, and the collecting pipe 201 is slidably connected to a limiting disk 202. An elastic member is fixed between the collecting pipe 201 and the limiting disk 202, wherein the elastic member is a compression spring, and the elastic member is compressed and stored after the limiting disk 202 moves upward.

[0038] like Figure 3-Figure 5 and Figure 7 As shown, the telescopic end of the first elastic telescopic rod 108 is rotatably connected to the rotating wheel 3, and a frustum surface is arranged on the left side of the rotating wheel 3, which is used to guide the telescopic end of the adjacent first elastic telescopic rod 108 to extend and retract when the rotating wheel 3 passes through the diameter change part of the sleeve head. The symmetrically distributed rotating wheels 3 and the symmetrically distributed first sandblasting sleeves 111 are alternately distributed, and the symmetrically distributed rotating wheels 3 and the symmetrically distributed first sandblasting sleeves 111 are both located on the same vertical plane, which is used to make the sandblasting position the same as the detection position of the first elastic telescopic rod 108.

[0039] like Figure 5 , Figure 8 and Fig. 9 As shown, the speed change assembly includes a connecting frame 5 symmetrically distributed in the upper and lower centers, the connecting frame 5 is fixedly connected to the telescopic end of the adjacent first hydraulic telescopic rod 109, and the opposite sides of the two connecting frames 5 are slidably connected with sliding rods 501. Taking the upper sliding rod 501 as an example, a rack is fixedly connected to the lower side of the upper sliding rod 501, and a gear is rotatably connected to the sandblasting pipe 101 near the position of the rack on the sliding rod 501. The rack of the sliding rod 501 is meshed with the gear of the sandblasting pipe 101, and the gear of the sandblasting pipe 101 is fixedly connected with a rotating telescopic rod 502 rotatably connected to the sandblasting pipe 101. The telescopic rotation of the rotating telescopic rod 502 A limiting groove is provided at the end, and a limiting pin which is pressed and matched with the limiting groove is provided in the fixed part of the rotating telescopic rod 502. The limiting groove at the telescopic end of the rotating telescopic rod 502 is spiral, and is used to squeeze the telescopic end of the rotating telescopic rod 502 to extend and retract through the limiting groove when the limiting pin of the fixed part of the rotating telescopic rod 502 rotates. The rotating telescopic rod 502 and the output shaft of the first motor 106 are transmitted through a speed gear set, wherein the speed gear set consists of a group of spur gears distributed in a linear array and a transmission gear fixedly connected to the output shaft of the first motor 106, and the number of teeth of the spur gears distributed in the linear array gradually decreases from left to right.

[0040] like Figure 8 and Fig. 9 As shown, a spring 6 is fixedly connected between the connecting frame 5 and the rack on the adjacent sliding rod 501, there is resistance between the sandblasting pipe 101 and its gear, and the resistance between the sandblasting pipe 101 and its gear is greater than the elastic force of the spring 6, but the resistance between the sandblasting pipe 101 and its gear is less than the sum of the elastic forces of the two springs 6, so that when one spring 6 is compressed, the gear of the sandblasting pipe 101 remains stationary, and the gear of the sandblasting pipe 101 rotates when the two springs 6 are compressed synchronously, thereby avoiding the speed change of the speed change gear set when the casing head is uneven, and a pressure sensor for regularly monitoring pressure changes is installed between the connecting frame 5 and the adjacent spring 6, wherein the pressure sensor is a prior art and is therefore not shown in the figure, and when the two springs 6 are subjected to the same force, the output shaft of the first motor 106 drives the sandblasting pipe 101 to rotate more than 180° before the sandblasting pipe 101 continues to move forward.

[0041] When the operator needs to process the oxide layer in the oil casing (the oil casing head is referred to as the casing head in the following), the operator first inserts the progressive piece 112 and the parts thereon at the left end of the device into the casing head, and then controls the three first electric sliders 102 to slide synchronously through the control panel. The first electric slider 102 drives the adjacent centering block 103 to move to clamp the casing head, and the second electric slider 104 aligns the axis of the sandblasting pipe 101 with the axis of the casing head. Then the operator turns on the second electric slider 104 through the control panel. The second electric slider 104 first moves to the left and drives the sandblasting pipe 101 to move to the left. The sandblasting pipe 101 drives the progressive piece 112 to move to the left. The sandblasting pipe 101 drives the parts thereon to gradually move to the left. When the first sandblasting casing 111 moves to the sandblasting position Afterwards, the operator injects abrasive material into the sandblasting pipe 101 through an external high-pressure injection device. At this time, the operator turns on the first motor 106 through the control panel and controls the second electric slider 104 to temporarily stop moving. The output shaft of the first motor 106 transmits the sandblasting pipe 101 through the speed gear set. The sandblasting pipe 101 drives the rotating ring 107 to rotate. The sandblasting pipe 101 drives the rotating ring 107, the symmetrically distributed first hydraulic telescopic rod 109, the symmetrically distributed second hydraulic telescopic rod 110 and the symmetrically distributed first sandblasting sleeve 111 thereon to rotate. During the rotation of the rotating ring 107, the sand material in the sandblasting pipe 101 is injected into the two first sandblasting sleeves 111 through the rotating ring 107, and the sand material is discharged into the sleeve head to sandblast the inside of the sleeve head to reduce the amount of oxide layer adhesion in the sleeve head.

[0042] When the oxide layer in one place inside the casing head is removed, the second electric slider 104 moves leftward again and drives the sandblasting pipe 101 to move leftward, and so on, so that the first sandblasting casing 111 continuously alternates between advancement and rotation for sandblasting, and the above steps are repeated to sandblast the inside of the casing head to remove the oxide layer.

[0043] In the process of the first elastic telescopic rod 108 moving to the left, the telescopic end of the first elastic telescopic rod 108 drives the adjacent rotating wheel 3 to move to the left. When the inner diameter of the casing head changes, taking the inner diameter of the casing head gradually becoming smaller as an example, at this time, the frustum of the rotating wheel 3 contacts and squeezes the stepped surface in the casing head (the stepped surface is the diameter change part of the casing head), so that the telescopic end of the first elastic telescopic rod 108 contracts and accumulates force, and the telescopic end of the first elastic telescopic rod 108 drives the telescopic end of the adjacent first hydraulic telescopic rod 109 to contract through its connecting plate. The first hydraulic telescopic rod 109 squeezes its internal hydraulic oil into the adjacent second hydraulic telescopic rod 110 through the conduit, and the telescopic end of the second hydraulic telescopic rod 110 drives the telescopic end of the adjacent first sandblasting sleeve 111 to move through the adjacent connecting plate, and the distance between the first sandblasting sleeve 111 and the inner wall of the casing head is adjusted accordingly to prevent the spraying position from remaining unchanged when the inner diameter of the casing head changes, thereby preventing the sandblasting distance inside the casing head from changing, resulting in excessive dispersion or concentration of the sandblasting, thereby affecting the sandblasting effect.

[0044] In the process of the telescopic end of the first sandblasting sleeve 111 moving to change the sandblasting distance between it and the sleeve head, taking the reduction of the inner diameter of the sleeve head as an example, the telescopic end of the first sandblasting sleeve 111 contracts to gradually reduce the gap between its through hole and the adjacent truncated cone rod 2, correspondingly reducing the sandblasting amount at the smaller inner diameter of the pipeline, and adaptively adjusting the spraying amount at different inner diameters. At the same time, the amount of sand in the sandblasting pipeline 101 increases and is discharged to the collecting pipeline 201. The smaller the inner diameter of the sleeve head becomes, the more sand passes through the collecting pipeline 201. The sand squeezes the limit plate 202 and gradually compresses its elastic member, so that the gap between the limit plate 202 and the collecting pipeline 201 gradually increases, and the excess sand is discharged to the external collecting equipment through the collecting pipeline 201.

[0045] During the process of contraction of the telescopic end of the first elastic telescopic rod 108 (at this time, the sandblasting pipe 101 is in the process of moving to the left, so the sandblasting pipe 101 is not in a rotating state), the telescopic end of the first elastic telescopic rod 108 drives the telescopic end of the adjacent first hydraulic telescopic rod 109 to contract, and the telescopic end of the first hydraulic telescopic rod 109 drives the adjacent connecting frame 5 to move, and the connecting frame 5 drives the adjacent rack to move through the spring 6, and the two racks synchronously drive the gear of the sandblasting pipe 101 to rotate, and the gear of the sandblasting pipe 101 drives the rotating telescopic rod 502 to rotate, so that the telescopic end of the rotating telescopic rod 502 moves to the right. Since the pressure on the spring 6 changes after the sleeve head changes in diameter, the pressure sensor outputs a command to make the control panel control the sliding block 105 to move up and down. The sliding block 105 drives the first motor 106 to move up and down, and the amount of up and down movement of the sliding block 105 is proportional to the extension amount of the extension end of the rotating telescopic rod 502. Along with the horizontal movement of the spur gears distributed in the linear array and the vertical movement of the transmission gear driven by the output shaft of the first motor 106, the spur gears meshing with the transmission gear of the output shaft of the first motor 106 are changed, so that the transmission ratio of the speed change gear set is gradually increased, and the output shaft of the first motor 106 drives the sandblasting pipe 101 to rotate through the speed change gear set. The speed is gradually reduced. When the inner diameter of the casing head changes, the rotation speed of the sandblasting pipe 101 and the parts thereon is adjusted accordingly to avoid that the rotation speed of the first sandblasting casing 111 does not change while the circumferential sandblasting area of ​​the casing head changes, resulting in a decrease in sandblasting efficiency.

[0046] When the oxide layer on the inner wall of the casing head is unevenly distributed, taking the presence of an oxide layer protrusion on the inner wall of the casing head as an example, the telescopic end of the first elastic telescopic rod 108 in contact with the protrusion drives the telescopic end of the adjacent first hydraulic telescopic rod 109 to contract, and the telescopic end of the first hydraulic telescopic rod 109 drives the adjacent connecting frame 5 to move, and the connecting frame 5 drives the adjacent rack to move through the spring 6. At this time, only one rack moves, the gear cannot rotate, and the spring 6 near the oxide layer protrusion is compressed and contracted, and the pressure sensor monitors this regularly until the springs 6 on both sides are subjected to the same force, and the output shaft of the first motor 106 rotates a stroke to ensure that the oxide layer is cleaned (one stroke refers to the sandblasting pipe 101 rotating more than 180° to ensure that the telescopic end of the first elastic telescopic rod 108 can continue to detect before the inner wall of the casing head is flat).

[0047] After the operator repeats the above steps to remove the oxide layer of the casing head, the operator controls the first electric slider 102 and the second electric slider 104 to move and reset through the control panel, so as to reset the sandblasting pipe 101 and the parts thereon, and finally turns off the first electric slider 102, the second electric slider 104 and the first motor 106, and cleans the device and the casing head for the next use.

[0048] The existing device can realize automatic sandblasting for straight pipes, but if sandblasting is performed on multi-pass pipes, multiple operations are required to repeatedly place the sandblasting device into the pipe for sandblasting, which results in cumbersome sandblasting steps and low efficiency.

[0049] Embodiment 2: Based on embodiment 1, Figure 10-12 As shown, it also includes a second sandblasting sleeve 7 symmetrically distributed front and back, the two symmetrically distributed second sandblasting sleeves 7 are both rotatably connected to the progressive member 112, the second sandblasting sleeve 7 is communicated with the progressive member 112, the progressive member 112 is slidably connected to a third electric slider 701 symmetrically distributed front and back through a third electric slide rail, the third electric slider 701 is electrically connected to the control panel, a second elastic telescopic rod 702 is fixedly connected to the third electric slider 701, and the adjacent second elastic telescopic rod 702 is driven to move by the third electric slider 701, so that the distance between the axis of the second sandblasting sleeve 7 and the right side of the telescopic end of the second elastic telescopic rod 702 is equal to the radius of the through holes on the front and rear sides of the sleeve head, a connecting rod 703 rotatably connected to the adjacent second sandblasting sleeve 7 is fixedly connected to the telescopic end of the second elastic telescopic rod 702, the second sandblasting sleeve 7 is parallel to the adjacent second elastic telescopic rod 702 and is located at the same horizontal height, which is used to make the second sandblasting sleeve 7 and the center of the through holes on the front and rear sides of the sleeve head always at the same horizontal height.

[0050] like Fig.11 and Fig.12As shown, a blocking pipe 9 is slidably connected in the sandblasting pipe 101, and the telescopic end of the second elastic telescopic rod 702 is fixedly connected to the blocking pipe 9 through a flexible rope, which is used to drive the blocking pipe 9 to move to the left through the flexible rope. The flexible rope at the telescopic end of the second elastic telescopic rod 702 passes through the adjacent third electric slider 701 and the progressive member 112. An elastic member is fixedly connected between the sandblasting pipe 101 and the blocking pipe 9, wherein the elastic member is a tension spring and is used to drive the blocking pipe 9 to move rightward and reset. The blocking pipe 9 is provided with front and rear symmetrical The through holes of the blocking pipe 9 are connected and matched with the connection between the first sandblasting sleeve 111 and the sandblasting pipe 101. Initially, the through hole of the blocking pipe 9 is aligned with the connection between the first sandblasting sleeve 111 and the sandblasting pipe 101, so that the sand material passes through the connection between the first sandblasting sleeve 111 and the sandblasting pipe 101, thereby allowing the sand material to enter the first sandblasting sleeve 111. The connection between the first sandblasting sleeve 111 and the sandblasting pipe 101 is blocked and matched with the blocking pipe 9. When the blocking pipe 9 drives its through hole After moving to the left, the connection between the first sandblasting sleeve 111 and the sandblasting pipeline 101 is blocked by the blocking pipeline 9, thereby preventing sand from entering the first sandblasting sleeve 111. A blocking rod 901 is fixedly connected to the progressive member 112 to cooperate with the blocking pipeline 9. The diameter of the blocking rod 901 gradually increases from left to right. The left diameter of the blocking pipeline 9 is smaller than the inner diameter of the remaining positions, so as to generate a gap between the blocking pipeline 9 and the blocking rod 901 after the blocking pipeline 9 moves to the left. A blocking block is fixedly connected to the second sandblasting sleeve 7 902, the blocking block 902 is used to control the connectivity state of the adjacent second sandblasting sleeve 7, a sandblasting channel 903 is arranged in the blocking block 902, the sandblasting channel 903 is sealed with the telescopic end of the second sandblasting sleeve 7, the sandblasting channel 903 is Z-shaped, when the blocking block 902 is in contact with the adjacent second sandblasting sleeve 7, the through hole on the second sandblasting sleeve 7 is misaligned with the sandblasting channel 903, after the blocking block 902 loses contact with the adjacent second sandblasting sleeve 7, the through hole on the second sandblasting sleeve 7 is connected with the sandblasting channel 903.

[0051] like Fig.10 , Fig.11 and Fig.13As shown, a second motor 10 electrically connected to the control panel is fixedly connected to the progressive member 112, a rotating shaft is fixedly connected to the telescopic end of the second motor 10, the rotating shaft of the output shaft of the second motor 10 is rotatably connected to the progressive member 112, the second sandblasting sleeve 7 and the rotating shaft of the second motor 10 are transmitted through a spur gear set, wherein the spur gear set is composed of two groups of spur gears symmetrically distributed front and back, the spur gears on the upper side are meshed with the adjacent spur gears on the lower side, one group of spur gears is fixedly connected to the rotating shaft of the output shaft of the second motor 10, and the other two symmetrical spur gears are respectively fixedly connected to the adjacent second sandblasting sleeve 7, a rotating shaft 1001 is rotatably connected to the progressive member 112, the rotating shaft of the output shaft of the second motor 10 is transmitted to the rotating shaft 1001 through a bevel gear set, wherein the bevel gear set is composed of two bevel gears, the rotating shaft of the output shaft of the second motor 10 is fixedly connected to one of the bevel gears, and the other bevel gear is fixedly connected to the rotating shaft 1001, and the connecting rod 703 is fixedly connected to the rotating shaft 1001 through a connecting rope 1002.

[0052] During the process of the progressive member 112 moving to the left (hereinafter, Figure 1 The circular holes on the front and rear sides of the middle four-way sleeve head are described as flow openings), the progressive member 112 drives the two second sandblasting sleeves 7 to move to the left (the operator controls the movement of the two third electric sliders 701 through the control panel in advance, and the third electric slider 701 drives the adjacent second elastic telescopic rod 702 to move, so that the distance between the axis of the second sandblasting sleeve 7 and the rightmost end of the telescopic end of the adjacent second elastic telescopic rod 702 is equal to the radius of the sleeve head flow opening), when the second elastic telescopic rod 702 moves to align with the adjacent flow opening, the telescopic end of the second elastic telescopic rod 702 pops out into the adjacent flow opening, and the telescopic end of the second elastic telescopic rod 702 drives the adjacent second sandblasting sleeve 7 to move through the connecting rod 703.

[0053] During the movement of the telescopic end of the second elastic telescopic rod 702 (at this time the connecting rod 703 moves and drives the connecting rope 1002 to move, causing the rotating shaft 1001 to rotate), the telescopic end of the second elastic telescopic rod 702 drives the blocking pipe 9 to move leftward through the flexible rope, the elastic part of the blocking pipe 9 is stretched and stores force, and the blocking pipe 9 drives the through hole thereon to move, so that the through hole of the blocking pipe 9 is misaligned with the connection between the first sandblasting sleeve 111 and the sandblasting pipe 101, and the blocking pipe 9 blocks the connection between the first sandblasting sleeve 111 and the sandblasting pipe 101. At the same time, the blocking pipe 9 moves and loses its blockage with the blocking rod 901. As the blocking pipe 9 moves, the gap between it and the blocking rod 901 gradually increases, and the sand in the sandblasting pipe 101 enters the second sandblasting sleeve 7 through the gap between the blocking pipe 9 and the blocking rod 901, and then the sand is discharged through the second sandblasting sleeve 7 and sandblasts the adjacent flow opening on the sleeve head.

[0054] After the sand material is discharged through the second sandblasting sleeve 7, the operator controls the output shaft of the second motor 10 to rotate through the control panel, and the output shaft of the second motor 10 drives its rotating shaft to rotate, and the rotating shaft of the output shaft of the second motor 10 drives the two second sandblasting sleeves 7 through the spur gear set to rotate the two second sandblasting sleeves 7, and the rotating shaft of the output shaft of the second motor 10 drives the rotating shaft 1001 through the bevel gear to rotate the rotating shaft 1001 and drive the connecting rope 1002 to be wound around it, so that the two second sandblasting sleeves 7 gradually move during the rotation process, and the channels on the front and rear sides of the sleeve head are sandblasted to reduce the adhesion of impurities such as oxide layer. When the sandblasting of the channels on the front and rear sides of the sleeve head is completed, the operator repeats the above steps to make the sandblasting pipe 101 continue to move to the right to sandblast the inside of the sleeve head.

[0055] After the operator repeats the above steps to remove the oxide layer of the casing head, the operator controls the first electric slider 102, the second electric slider 104 and the third electric slider 701 to move and reset through the control panel, so that the sandblasting pipe 101 and the two parts thereon and the progressive member 112 and the parts thereon are reset, and finally the first electric slider 102, the second electric slider 104, the third electric slider 701, the first motor 106 and the second motor 10 are turned off, and the device and the casing head are cleaned for the next use.

[0056] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in the field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An oxide layer treatment device for processing a petroleum casing head, comprising a fixed frame (1), the fixed frame (1) being provided with a sandblasting pipeline (101), the fixed frame (1) being provided with a first electric slide rail evenly distributed in the circumferential direction, a first electric slider (102) being slidably connected in the first electric slide rail of the fixed frame (1), a centering block (103) being fixedly connected to the first electric slider (102), the fixed frame (1) being slidably connected to a second electric slider (104) rotatably connected to the sandblasting pipeline (101) via a second electric slide rail, wherein: The invention also comprises a sliding block (105), wherein the sliding block (105) is slidably connected to the fixing frame (1); a first motor (106) is fixedly connected to the sandblasting pipe (101); a speed change assembly for adjusting the rotation speed of the sandblasting pipe (101); a rotating ring (107), symmetrically distributed first hydraulic telescopic rods (109) and symmetrically distributed second hydraulic telescopic rods (110) are fixedly connected to the sandblasting pipe (101); the first hydraulic telescopic rods (109) are connected to the corresponding second hydraulic telescopic rods (110) via conduits; the rotating ring (107) is fixedly connected to first elastic telescopic rods (108) which are symmetrically distributed; the first elastic telescopic rods (108) are connected to the rotating ring (107); ... The telescopic end is fixedly connected to the telescopic end of the adjacent first hydraulic telescopic rod (109); the rotating ring (107) is fixedly connected with first sandblasting sleeves (111) which are symmetrically distributed and connected to the sandblasting pipe (101) through the first sandblasting sleeve (111); the telescopic end of the first sandblasting sleeve (111) is fixedly connected to the telescopic end of the adjacent second hydraulic telescopic rod (110); one end of the sandblasting pipe (101) away from the fixed frame (1) is rotatably connected to a progressive member (112) connected thereto; the progressive member (112) is composed of a shell connected to the sandblasting pipe (101), an elastic telescopic rod and a progressive wheel; the elastic telescopic rod of the progressive member (112) is used to control the progressive wheel to fit with the inner wall of the sleeve head.

2. The oxide layer treatment equipment for oil casing head processing according to claim 1 is characterized in that: A truncated cone rod (2) is fixedly connected inside the first sandblasting sleeve (111), and the diameter of the truncated cone rod (2) gradually decreases from a side close to the rotating ring (107) to a side away from the rotating ring (107). The truncated cone rod (2) is used to adjust the sand material flow rate of the through hole on the telescopic end of the first sandblasting sleeve (111). A collecting pipe (201) is rotatably connected to and communicated with the sandblasting pipe (101), and the inner diameter of the collecting pipe (201) gradually increases from a side close to the sandblasting pipe (101) to a side away from the sandblasting pipe (101). The collecting pipe (201) is slidably connected to a limiting plate (202), and an elastic member is fixedly connected between the collecting pipe (201) and the limiting plate (202).

3. The oxide layer treatment equipment for oil casing head processing according to claim 1 is characterized in that: The telescopic end of the first elastic telescopic rod (108) is rotatably connected to a rotating wheel (3), and a round table surface is provided on the rotating wheel (3) on a side close to the moving direction of the sandblasting pipe (101).

4. The oxide layer treatment equipment for oil casing head processing according to claim 3 is characterized in that: The symmetrically distributed rotating wheels (3) and the symmetrically distributed first sandblasting sleeves (111) are alternately distributed, and the symmetrically distributed rotating wheels (3) and the symmetrically distributed first sandblasting sleeves (111) are both located on the same vertical plane.

5. The oxide layer treatment equipment for oil casing head processing according to claim 1 is characterized in that: The speed change assembly comprises a connecting frame (5) distributed symmetrically around the center, the connecting frame (5) being fixedly connected to the telescopic end of the adjacent first hydraulic telescopic rod (109), a sliding rod (501) being slidably connected to the side of the connecting frame (5) close to the sandblasting pipe (101), a rack being fixedly connected to the side of the sliding rod (501) close to the sandblasting pipe (101), a gear being rotatably connected to the position of the rack on the sliding rod (501) of the sandblasting pipe (101), the rack of the sliding rod (501) being meshed with the gear of the sandblasting pipe (101), the gear of the sandblasting pipe (101) being fixedly connected to a rotating telescopic rod (502) rotatably connected to the sandblasting pipe (101), and the rotating telescopic rod (502) and the output shaft of the first motor (106) being transmitted via a speed change gear set.

6. The oxide layer treatment equipment for oil casing head processing according to claim 5 is characterized in that: A spring (6) is fixedly connected between the connecting frame (5) and the rack on the adjacent sliding rod (501), and there is resistance between the sandblasting pipe (101) and its gear, and the resistance between the sandblasting pipe (101) and its gear is greater than the elastic force of the spring (6), but the resistance between the sandblasting pipe (101) and its gear is less than the sum of the elastic forces of the two springs (6), and a pressure sensor for regularly monitoring pressure changes is installed between the connecting frame (5) and the adjacent spring (6).

7. The oxide layer treatment equipment for oil casing head processing according to claim 1 is characterized in that: It also includes symmetrically distributed second sandblasting sleeves (7), which are all rotatably connected to the progressive member (112), the second sandblasting sleeves (7) are communicated with the progressive member (112), the progressive member (112) is slidably connected to a symmetrically distributed third electric slider (701) via a third electric slide rail, the third electric slider (701) is fixedly connected to a second elastic telescopic rod (702), and the telescopic end of the second elastic telescopic rod (702) is fixedly connected to a connecting rod (703) rotatably connected to the adjacent second sandblasting sleeve (7).

8. The oxide layer treatment equipment for oil casing head processing according to claim 7 is characterized in that: The second sandblasting sleeve (7) is parallel to the adjacent second elastic telescopic rod (702) and is located at the same horizontal height.

9. The oxide layer treatment equipment for oil casing head processing according to claim 7 is characterized in that: A blocking pipe (9) is slidably connected inside the sandblasting pipe (101); the telescopic end of the second elastic telescopic rod (702) is fixedly connected to the blocking pipe (9) via a flexible rope; the flexible rope at the telescopic end of the second elastic telescopic rod (702) passes through the adjacent third electric slider (701) and the progressive member (112); an elastic member is fixedly connected between the sandblasting pipe (101) and the blocking pipe (9); symmetrically distributed through holes are provided on the blocking pipe (9); the through holes of the blocking pipe (9) are connected and matched with the connecting point between the first sandblasting sleeve (111) and the sandblasting pipe (101); the first sandblasting sleeve (111) is connected to the sandblasting pipe (101); The connection point of the sand pipe (101) is sealed with the blocking pipe (9), a blocking rod (901) is fixedly connected to the progressive member (112) and is sealed with the blocking pipe (9), the diameter of the blocking rod (901) gradually increases from a side away from the blocking pipe (9) to a side close to the blocking pipe (9), a blocking block (902) is fixedly connected to the second sandblasting sleeve (7), the blocking block (902) is used to control the connection state of the adjacent second sandblasting sleeve (7), a sandblasting channel (903) is arranged in the blocking block (902), and the sandblasting channel (903) is sealed with the telescopic end of the second sandblasting sleeve (7).

10. The oxide layer treatment equipment for oil casing head processing according to claim 9, characterized in that: The progressive member (112) is fixedly connected to a second motor (10), a retractable end of the second motor (10) is fixedly connected to a rotating shaft, the rotating shaft of the second motor (10) is rotatably connected to the progressive member (112), the second sandblasting sleeve (7) and the rotating shaft of the output shaft of the second motor (10) are driven via a spur gear set, the progressive member (112) is rotatably connected to a rotating shaft (1001), the rotating shaft of the output shaft of the second motor (10) and the rotating shaft (1001) are driven via a bevel gear set, and the connecting rod (703) is fixedly connected to the rotating shaft (1001) via a connecting rope (1002).

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