Underground corrosion coupon device

Abstract

The utility model belongs to the technical field of oil field underground monitoring, and particularly relates to an underground corrosion coupon device which comprises two semi-circle sleeves, the two semi-circle sleeves are rotatably connected, and each semi-circle sleeve is provided with a plurality of mounting grooves with one side open. The T-shaped rod is pulled, the T-shaped rod drives the moving block to move through the connecting block, the moving block drives the other moving block to move through the flexible steel rope, the moving block drives the moving rod to slide on the positioning rod and compress the first spring, the moving block drives the clamping pin to be separated from the clamping groove, and then the half-circle sleeve is unfolded and arranged on the oil pipe in a sleeving mode. When the sides, close to each other, of the two connecting plates make contact, force on the T-shaped rod is released, the first spring in the compressed state is reset, the first spring drives the moving rod to move, the moving rod drives the clamping pin to move through the moving block, the clamping pin and the clamping groove are clamped, and therefore the oil pipe fixing device is fixed to the oil pipe, operation is easy and convenient, and the loosening phenomenon does not occur; the stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield downhole monitoring technical field, concretely is downhole corrosion coupon holder. BACKGROUND

[0002] At present, the domestic and foreign oilfield corrosion online monitoring methods mainly have weight loss method, resistance probe method, electrochemical method and chemical analysis method, wherein the weight loss coupon method is more accurate because of the same material test piece and the same corrosion environment, so it becomes the corrosion rate evaluation method commonly used in the present field and laboratory;

[0003] China open authorization invention: CN219121999U discloses a downhole corrosion coupon holder, belongs to oilfield downhole monitoring technical field, including two installation cylinder units, two installation cylinder units are rotatably connected with connecting rod respectively, a plurality of installation cylinder fixing bolts fix two installation cylinder units together, two groups of sand cleaning anti-collision assemblies are respectively installed on the installation cylinder unit;Sand cleaning anti-collision assembly is provided with mounting seat, and the mounting seat is rotatably connected with the installation cylinder unit, the connecting rod is rotatably connected on the mounting seat, and the torsional spring is installed between the mounting seat and the connecting rod, and the connecting rod is rotatably connected with the sliding block;The coupon is fixed on the mounting seat through a plurality of coupon fixing bolts, and the maximum included angle between the connecting rod and the outer wall of the installation cylinder unit is 30°.The utility model can protect the coupon from being damaged during the rising or falling of the oil pipe, clean the sandstone near the coupon during daily use, prevent the coupon from being corroded, and improve the monitoring effect;

[0004] However, the device still has some problems, in the actual use process, two installation cylinder units are locked through a plurality of installation cylinder fixing bolts to ensure that they are stably fixed on the oil pipe, since a plurality of bolts need to be tightened one by one, the installation process is not only time-consuming and laborious, but also the mode of a plurality of bolt connections means that any problem (such as thread slipping, loosening, etc.) of any bolt may affect the stability of the entire installation cylinder unit, therefore, we propose the downhole corrosion coupon holder to solve the above problems. UTILITY MODEL CONTENTS

[0005] (I) technical problems solved

[0006] In view of the deficiencies of the prior art, the utility model provides a downhole corrosion coupon holder, which solves the problems raised in the above background art.

[0007] (II) technical scheme

[0008] The utility model discloses a specific technical scheme to realize the above-mentioned purposes:

[0009] A downhole corrosion-resistant insert includes two semi-circular sleeves rotatably connected. Each semi-circular sleeve has multiple mounting slots, one side of which is open. The mounting slots hold insert bodies. A connecting plate is fixedly connected to one side of each semi-circular sleeve. One of the connecting plates has a groove on one side, with slots on both inner walls of the groove. The other connecting plate has a cavity, with positioning rods welded to both inner walls of the cavity. A moving rod is slidably connected to the positioning rod. A first spring is fixedly connected between the end of the moving rod and one inner wall of the cavity. The movable sleeve is mounted on the corresponding positioning rod. The other end of the movable rod is fixedly connected to a movable block. A locking pin is welded to one side of the movable block. The locking pin engages with the corresponding locking groove. A connecting block is fixedly connected to one side of one of the two movable blocks. A T-shaped rod is provided on the top of the other connecting plate. The end of the T-shaped rod extends into the cavity and is fixedly connected to one side of the connecting block. A fixed pulley is rotatably connected to the bottom inner wall of the cavity. A flexible steel rope is fixedly connected to the other side of one of the two movable blocks. The end of the flexible steel rope passes around one side of the fixed pulley and is fixedly connected to one side of the other movable block.

[0010] Furthermore, a limiting sleeve is welded onto the T-shaped rod, and a second spring is fixedly connected between the top of the limiting sleeve and the top inner wall of the cavity, with the second spring movably sleeved on the T-shaped rod.

[0011] Furthermore, two rectangular holes are formed on one inner wall of the cavity, and the inner wall of the rectangular holes is slidably connected to the outer side of the corresponding movable block.

[0012] Furthermore, a limiting rod is fixedly connected to the bottom inner wall of the mounting groove, and the limiting rod is in movable contact with the corresponding hanging plate body.

[0013] Furthermore, a threaded groove is provided on one inner wall of the mounting groove, and a mounting block is fixedly connected to the top of the hanging plate body. The mounting block is threadedly connected to the corresponding threaded groove by bolts.

[0014] Furthermore, a guide hole is provided on the top inner wall of the cavity, the inner wall of the guide hole is slidably connected to the outer side of the T-shaped rod, and an anti-slip pad is provided on the inner wall of the semi-circular sleeve.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a downhole corrosion-resistant plate holder, which has the following beneficial effects:

[0017] This invention utilizes a T-shaped rod, which, through a connecting block, moves a movable block. This movable block, via a flexible steel rope, moves another movable block. The movable block causes a moving rod to slide on a positioning rod, compressing a first spring. The moving block then causes a locking pin to separate from its groove. Next, a half-circle sleeve is unfolded and fitted onto the oil pipe. When the two connecting plates contact each other on their closest sides, the force on the T-shaped rod is released, and the compressed first spring returns to its original position. The first spring then moves the moving rod, which, through the moving block, moves the locking pin, causing it to engage with the groove, thus fixing it to the oil pipe. This method is simple and convenient to operate, prevents loosening, and improves the stability of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of one of the multiple hanging plate bodies of this utility model after removal.

[0020] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the connecting plate of this utility model;

[0022] Figure 5 This utility model Figure 3 A schematic diagram of the three-dimensional structure of the middle connecting plate after cutting.

[0023] In the diagram: 1. Semi-circular sleeve; 2. Mounting groove; 3. Hanger body; 4. Connecting plate; 5. Groove; 6. Slot; 7. Cavity; 8. Positioning rod; 9. Moving rod; 10. First spring; 11. Moving block; 12. Locking pin; 13. Connecting block; 14. T-shaped rod; 15. Fixed pulley; 16. Flexible steel rope; 17. Limiting sleeve; 18. Second spring; 19. Rectangular hole; 20. Limiting rod; 21. Threaded groove; 22. Mounting block; 23. Bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figures 1-5As shown, an embodiment of this utility model discloses a downhole corrosion hanger, comprising two semi-circular sleeves 1 rotatably connected. Each semi-circular sleeve 1 has multiple mounting grooves 2 with one side open. A hanger body 3 is mounted on each mounting groove 2. A connecting plate 4 is fixedly connected to one side of each semi-circular sleeve 1. One of the connecting plates 4 has a groove 5 on one side, and slots 6 are formed on both inner walls of the groove 5. The other connecting plate 4 has a cavity 7, and positioning rods 8 are welded to both inner walls of the cavity 7. A moving rod 9 is slidably connected to the positioning rod 8. A first spring 10 is fixedly connected between the end of the moving rod 9 and one side of the inner wall of the cavity 7. The first spring 10 is movably sleeved on the corresponding positioning rod 8. A moving block 11 is fixedly connected to the other end of the moving rod 9. A locking pin 12 is welded to one side of the moving block 11, and the locking pin 12 is engaged with the corresponding locking groove 6. A connecting block 13 is fixedly connected to one side of one of the two moving blocks 11. A T-shaped rod 14 is provided on the top of the other connecting plate 4. The end of the T-shaped rod 14 extends into the cavity 7 and is fixedly connected to one side of the connecting block 13. A rotatable connection is provided on the bottom inner wall of the cavity 7. There is a fixed pulley 15. One of the two movable blocks 11 has a flexible steel rope 16 fixedly connected to the other side. The end of the flexible steel rope 16 passes around one side of the fixed pulley 15 and is fixedly connected to one side of the other movable block 11. Pulling the T-shaped rod 14 compresses the second spring 18 through the limiting sleeve 17. The T-shaped rod 14 drives the movable block 11 to move through the connecting block 13. The movable block 11 drives the other movable block 11 to move through the flexible steel rope 16, so that the two movable blocks 11 move towards each other. The movable block 11 drives the corresponding movable rod 9 to slide on the positioning rod 8. The first spring 10 is compressed, and the moving block 11 causes the locking pin 12 to separate from the corresponding slot 6. Then, the half-circle sleeve 1 is unfolded and placed on the oil pipe. When the two connecting plates 4 are in contact on their respective sides, the force on the T-shaped rod 14 is released, and the first spring 10, which is in a compressed state, returns to its original position. The first spring 10 causes the corresponding moving rod 9 to move, and the moving rod 9 causes the locking pin 12 to move through the corresponding moving block 11, so that the locking pin 12 is engaged with the corresponding slot 6, thereby fixing it on the oil pipe. The operation is simple and convenient, and there is no loosening, which improves the stability of the device.

[0027] In some embodiments, a limiting sleeve 17 is welded onto the T-shaped rod 14, and a second spring 18 is fixedly connected between the top of the limiting sleeve 17 and the top inner wall of the cavity 7. The second spring 18 is movably sleeved on the T-shaped rod 14, and the T-shaped rod 14 serves as a connecting element.

[0028] In some embodiments, two rectangular holes 19 are formed on one inner wall of the cavity 7, and the inner wall of the rectangular holes 19 is slidably connected to the outer side of the corresponding movable block 11.

[0029] In some embodiments, a limiting rod 20 is fixedly connected to the bottom inner wall of the mounting groove 2. The limiting rod 20 is in active contact with the corresponding hanging plate body 3. The limiting rod 20 serves as a positioning tool.

[0030] In some embodiments, a threaded groove 21 is provided on one inner wall of the mounting groove 2, and a mounting block 22 is fixedly connected to the top of the hanging plate body 3. The mounting block 22 is threadedly connected to the corresponding threaded groove 21 by bolts 23.

[0031] In some embodiments, a guide hole is provided on the top inner wall of the cavity 7, and the inner wall of the guide hole is slidably connected to the outer side of the T-shaped rod 14. An anti-slip pad is provided on the inner wall of the semi-circular sleeve 1, and the anti-slip pad serves to prevent slipping.

[0032] Working principle or structural principle: In use, pulling the T-shaped rod 14 compresses the second spring 18 through the limiting sleeve 17. The T-shaped rod 14 drives the moving block 11 to move through the connecting block 13. The moving block 11 drives another moving block 11 to move through the flexible steel rope 16, causing the two moving blocks 11 to move closer to each other. The moving block 11 drives the corresponding moving rod 9 to slide on the positioning rod 8 and compress the first spring 10. At the same time, the moving block 11 drives the locking pin 12 to separate from the corresponding locking groove 6. Then, the half-circle sleeve 1 is unfolded and fitted onto the oil pipe. When the two... When the connecting plates 4 are in contact on their respective sides, the force on the T-shaped rod 14 is released, and the first spring 10, which is in a compressed state, returns to its original position. The first spring 10 drives the corresponding moving rod 9 to move, and the moving rod 9 drives the locking pin 12 to move through the corresponding moving block 11, so that the locking pin 12 is engaged with the corresponding locking groove 6, thereby fixing it on the oil pipe. The operation is simple and convenient, and there is no loosening, which improves the stability of the device. When it is necessary to replace the hanging plate body 3, the bolt 23 is rotated to separate the mounting block 22 from the corresponding mounting groove 2, and then the hanging plate body 3 can be moved to remove and replace it.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A downhole corrosion coupon holder comprising two half loops of a sleeve (1), characterized in that: Two half circle sleeves (1) are rotationally connected, a plurality of installation grooves (2) with one side being provided with an opening are arranged on the half circle sleeve (1), a hanging piece body (3) is arranged on the installation groove (2), one side of one of the two connection plates (4) is provided with a groove (5), clamping grooves (6) are arranged on the inner walls of the two sides of the groove (5), a cavity (7) is arranged on the other one of the two connection plates (4), positioning rods (8) are welded on the inner walls of the two sides of the cavity (7), a moving rod (9) is slidably connected on the positioning rod (8), a first spring (10) is fixedly connected between the end of the moving rod (9) and the inner wall of one side of the cavity (7), the first spring (10) is movably sleeved on the corresponding positioning rod (8), the other end of the moving rod (9) is fixedly connected with a moving block (11), a clamping pin (12) is welded on one side of the moving block (11), the clamping pin (12) is clamped with the corresponding clamping groove (6), one side of one of the two moving blocks (11) is fixedly connected with a connecting block (13), a T-shaped rod (14) is arranged on the top of the other one of the two connection plates (4), the end of the T-shaped rod (14) extends into the cavity (7) and is fixedly connected with one side of the connecting block (13), a fixed pulley (15) is rotationally connected on the bottom inner wall of the cavity (7), the other side of one of the two moving blocks (11) is fixedly connected with a flexible steel wire (16), the end of the flexible steel wire (16) passes through one side of the fixed pulley (15) and is fixedly connected with the other side of the other moving block (11).

2. The downhole corrosion coupon holder of claim 1, wherein: A limiting sleeve (17) is welded on the T-shaped rod (14), a second spring (18) is fixedly connected between the top of the limiting sleeve (17) and the top inner wall of the cavity (7), and the second spring (18) is movably sleeved on the T-shaped rod (14).

3. The downhole corrosion coupon holder of claim 2, wherein: Two rectangular holes (19) are arranged on the inner wall of one side of the cavity (7), and the inner wall of the rectangular hole (19) is slidably connected with the outer side of the corresponding moving block (11).

4. The downhole corrosion coupon holder of claim 3, wherein: A limiting rod (20) is fixedly connected on the bottom inner wall of the installation groove (2), and the limiting rod (20) is movably contacted with the corresponding hanging piece body (3).

5. The downhole corrosion coupon holder of claim 4, wherein: A threaded groove (21) is arranged on the inner wall of one side of the installation groove (2), an installation block (22) is fixedly connected on the top of the hanging piece body (3), and the installation block (22) is threadedly connected with the corresponding threaded groove (21) through a bolt (23).

6. The downhole corrosion coupon holder of claim 5, wherein: A guide hole is arranged on the top inner wall of the cavity (7), the inner wall of the guide hole is slidably connected with the outer side of the T-shaped rod (14), and an antiskid pad is arranged on the inner wall of the half circle sleeve (1).

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