Reciprocating type abrasion testing machine

Abstract

The utility model relates to a reciprocating type abrasion testing machine which comprises a working table, and further comprises a slurry box arranged on the working table; the force measuring assembly is installed on the working table, and the force measuring assembly comprises a force measuring support, a vertical shaft and an upper sample installed at the bottom of the vertical shaft; and a motion assembly. According to the utility model, the mud box is statically placed, and only the lower test sample moves back and forth, so that mud does not shake in the static mud box, the upper test sample and the lower test sample are completely immersed in the static mud liquid, and when the lower test sample does reciprocating friction movement equivalent to the upper test sample, the lower test sample and a clamp thereof can stir the mud, and the mud still shakes; meanwhile, a clamp plate and a baffle are subjected to chamfering treatment, slurry resistance in the movement process is reduced, a slurry cover is additionally arranged on a slurry box, a vertical shaft connected with an upper sample penetrates through the slurry cover, and slurry splashing is prevented to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a reciprocating wear testing machine. Background Art

[0002] In the field of machinery, friction and wear is a major topic that cannot be ignored and must be studied. Similarly, for the oil industry, the economic losses caused by friction and wear, especially casing wear, are huge. In particular, after the casing is worn, the wall thickness of the casing is greatly reduced, and the anti-crushing and anti-corrosion capabilities are greatly reduced. The casing cannot be replaced, which often leads to a large number of drilling accidents and early scrapping of oil and gas wells, causing huge economic losses. Among them, the reciprocating friction and wear between the oil pipe and the casing is one of the reasons for the wear of the casing. Therefore, it is necessary to conduct in-depth research on reciprocating wear.

[0003] In oil and gas well engineering, the casing wear problem should be treated as a systematic problem. Scientific casing wear prediction and analysis technology is the core of casing wear prevention. The current advanced casing wear prediction and analysis technology is based on a large number of physical tests. It is relatively mature and can be effectively applied to on-site casing wear prediction and analysis. The corresponding friction and wear test generally requires the use of a friction and wear testing machine to measure a series of parameters of the wear characteristics of the friction pair.

[0004] However, the reciprocating friction and wear testing machines currently on the market did not have an in-depth understanding of the data on oilfield casing wear at the beginning of their design. Therefore, they failed to take into account the special situation of oil during design and manufacturing, and the testing machines are difficult to prevent mud splashing. In actual tests, the mud will swing back and forth in the reciprocating mud box due to inertia. When the crank speed reaches more than 70 rpm, the mud will shake violently and splash a lot. The splashed mud will spread all over the entire test machine table parts, which will seriously corrode the table and other parts in the long run. Utility Model Content

[0005] The utility model aims to provide a reciprocating wear testing machine to solve the above problems.

[0006] In order to solve the above technical problems, the utility model provides a reciprocating wear testing machine, including a workbench, and also including:

[0007] A mud box, the mud box is placed on the workbench;

[0008] A force measuring assembly, the force measuring assembly is mounted on the workbench, the force measuring assembly comprises a force measuring bracket and a vertical shaft, and an upper pattern mounted on the bottom of the vertical shaft;

[0009] A motion assembly, the motion assembly comprising a first bracket and a second bracket mounted on the workbench, a linear guide rail being fixed between the first bracket and the second bracket, a mounting plate being slidably mounted on the linear guide rail, a groove being provided on the mounting plate, a fixture plate being mounted on the mounting plate, the bottom of the fixture plate passing through the groove and being placed at the bottom of the mud box, a lower sample being mounted on the fixture plate, and the upper sample being in contact with the lower sample;

[0010] A crank assembly is used to drive the mounting plate to move left and right along the linear guide rail.

[0011] Furthermore, a mud cover is installed on the top of the mud box, and two long holes are opened on the top of the mud cover, and the clamp plate is inserted into the mud box through the long holes.

[0012] Furthermore, the fixture plate is groove-shaped, a sample groove is provided at the inner bottom of the fixture plate, the lower sample is installed in the sample groove, a fixed connecting plate is fixed at the top of the fixture plate, a hanging ear is fixed at the top of the connecting plate, the connecting plate can move left and right in the long hole, and the hanging ear is fixed on the mounting plate.

[0013] Furthermore, the bottom of the vertical shaft passes through the mounting plate and the mud cover, and the vertical shaft diameter of the vertical shaft is 30 mm.

[0014] Furthermore, the crank assembly includes a connecting disk bracket installed on one side of the first bracket, a motor installed at the bottom of the connecting disk bracket, and a rotating disk installed on the top of the connecting disk. A slide groove is provided on the top of the rotating disk, a slider is installed inside the slide groove, the slider is slidably installed in the slide groove, and a connecting rod is installed on the top of the slider.

[0015] Furthermore, an extension plate is fixed to one side of the mounting plate, and one end of the connecting rod is fixed to the extension plate.

[0016] Furthermore, baffles are installed on both sides of the sample slot, and one side of the baffle is provided with an inclined surface.

[0017] The beneficial effects of the utility model are:

[0018] By placing the mud box still and only allowing the lower sample to reciprocate, the mud will no longer shake in the static mud box, and the upper and lower test specimens will be completely immersed in the static mud liquid. When the lower sample is equivalent to the upper sample making reciprocating friction motion, the lower sample and its fixture will stir the mud, and the mud will still shake. At the same time, the fixture plate and baffle are chamfered to reduce the mud resistance during the movement, and a mud cover is added to the mud box, and the vertical shaft connected to the upper sample passes through the mud cover to prevent mud splashing to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of a preferred embodiment of a reciprocating wear testing machine of the utility model;

[0020] Figure 2 It is a side cross-sectional view of a preferred embodiment of a reciprocating wear testing machine of the utility model;

[0021] Figure 3 It is a front view of a moving component of a reciprocating wear testing machine of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the fixture plate of the utility model;

[0023] Figure 5 It is a stereoscopic diagram of the mud pool of the utility model.

[0024] In the figure:

[0025] 1. Workbench; 11. Tank;

[0026] 2. Mud box; 21. Mud cover; 22. Long hole;

[0027] 3. Force measuring assembly; 31. Force measuring bracket; 32. Vertical axis; 33. Upper pattern;

[0028] 4. Motion assembly; 41. First bracket; 42. Second bracket; 43. Linear guide; 44. Mounting plate; 45. Strip groove; 46. Fixture plate; 47. Lower pattern; 48. Sample groove; 49. Connecting plate; 410. Hanging ear; 411. Extension plate; 412. Baffle; 413. Inclined surface;

[0029] 5. Crank assembly; 51. Connecting plate bracket; 52. Motor; 53. Rotating plate; 54. Slide groove; 55. Sliding block; 56. Connecting rod. DETAILED DESCRIPTION

[0030] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0031] like Figures 1 to 5As shown, the utility model provides a reciprocating wear testing machine, including: a reciprocating wear testing machine, including a workbench 1, and also including: a mud box 2, the mud box 2 is placed on the workbench 1; a force measuring component 3, the force measuring component 3 is installed on the workbench 1, the force measuring component 3 includes a force measuring bracket 31 and a vertical shaft 32, and an upper sample 33 installed at the bottom of the vertical shaft 32; a motion component 4, the motion component 4 includes a first bracket 41 and a second bracket 42 installed on the workbench 1, a linear guide 43 is fixed between the first bracket 41 and the second bracket 42, a mounting plate 44 is slidably mounted on the linear guide 43, a groove 45 is opened on the mounting plate 44, a fixture plate 46 is installed on the mounting plate 44, the bottom of the fixture plate 46 passes through the groove 45 and is placed at the bottom of the mud box 2, a lower sample 47 is installed on the fixture plate 46, the upper sample contacts the lower sample, and a crank component 5, the crank component 5 is used to drive the mounting plate 44 to move left and right along the linear guide 43.

[0032] A groove 11 is provided on the top of the workbench 1, and the mud box 2 is slidably installed in the groove 11 on the top of the workbench 1. The lower sample is fixed in the mud box 2 by the fixture plate 46, and the upper sample is in contact with the lower sample. When the test machine is working, the mud from the oil field site is injected into the mud box 2, and the upper and lower samples are immersed in the mud together. The mounting plate 44 is driven by the crank assembly 5 to reciprocate along the linear guide rail 43. In this way, the lower sample that reciprocates with the mud box 2 and the stationary upper sample reciprocate back and forth in the mud to generate friction, so as to achieve a working condition environment simulating the wear of the oil pipe casing in the mud. The bottom of the vertical shaft 32 passes through the mounting plate 44 and the mud cover 21, and the diameter of the vertical shaft 32 of the vertical shaft 32 is 30 mm.

[0033] A mud cover 21 is installed on the top of the mud box 2. Two long holes 22 are opened on the top of the mud cover 21. The clamp plate 46 is inserted into the mud box 2 from the long holes 22. The two long holes 22 of the cover are displacement grooves of the clamp plate 46. The gap between the two is 1 mm and they do not contact each other. The circular hole in the center of the cover is reserved for the vertical shaft 32. The diameter of the vertical shaft 32 is 30 mm, and the diameter of the hole is 31 mm. Similarly, the two do not contact each other.

[0034] The fixture plate 46 is groove-shaped, and a sample groove 48 is provided at the inner bottom of the fixture plate 46. The lower sample 47 is installed in the sample groove 48. A fixed connecting plate 49 is fixed to the top of the fixture plate 46, and a hanging ear 410 is fixed to the top of the connecting plate 49. The connecting plate 49 can move left and right in the long hole 22, and the hanging ear 410 is fixed on the mounting plate 44.

[0035] The purpose of forming an I-shaped surface among the hanging ear 410, the fixture plate 46 and the connecting plate 49 is to reduce the relative displacement when they are assembled with the cover of the mud box 2 during reciprocating motion, thereby reducing the length of the long hole 22. The shorter the long hole 22 is, the more conducive it is to prevent mud from splashing out. In addition, the cross-section of the part of the fixture in the mud box 2 (i.e. below the narrow part) is chamfered to reduce the contact surface between the fixture and the mud so as to reduce the mud resistance when the fixture reciprocates, thereby avoiding stirring up the mud as much as possible. By placing the bottom of the fixture plate 46 in the mud box 2, the sample slot 48 on the fixture plate 46 is used to install the lower sample. When the mounting plate 44 moves left and right, the connecting plate 49 on the top of the fixture plate 46 can move left and right in the long hole 22, and at the same time, the lower sample 47 at the bottom moves left and right in the mud slot.

[0036] The crank assembly 5 includes a connecting disk bracket 51 installed on one side of the first bracket 41, the connecting disk bracket 51 and a motor 52 installed at the bottom of the connecting disk, and a rotating disk 53 installed on the top of the connecting disk. A slide groove 54 is opened on the top of the rotating disk 53, and a slider 55 is slidably installed in the slide groove. A connecting rod 56 is installed on the top of the slider, and a connecting rod 56 is installed on the top of the slide rail. An extension plate 411 is fixed to one side of the mounting plate 44, and one end of the connecting rod 56 is fixed on the extension plate 411.

[0037] The rotating disk 53 is driven to rotate by starting the motor 52, and at the same time, the slider 55 on the top of the rotating disk 53 slides along the slide groove 54, driving the connecting rod 56 to move left and right, and the connecting rod 56 pulls the extension plate 411 to move left and right, thereby achieving the purpose of moving the mounting plate 44 left and right. In addition, this solution can directly replace the crank assembly 5 with a hydraulic cylinder, which is fixed on the mounting plate 44 by one side of the hydraulic cylinder, and uses the hydraulic cylinder to pull the mounting device to move left and right.

[0038] By placing the mud box 2 still and only allowing the lower sample to reciprocate, the mud will no longer shake in the stationary mud box 2, and the upper and lower samples will be completely immersed in the stationary mud liquid. When the lower sample is equivalent to the upper sample making reciprocating friction motion, the lower sample and its fixture will stir the mud, and the mud will still shake. At the same time, the fixture plate 46 and the baffle plate 412 are chamfered to reduce the mud resistance during the movement, and a mud cover 21 is added to the mud box 2, and the vertical shaft 32 connected to the upper sample passes through the mud cover 21 to prevent mud splashing to the greatest extent.

[0039] Baffles 412 are installed on both sides of the sample tank 48. A slope 413 is provided on one side of the baffle 412. By providing the slope 413 on one side of the baffle 412, the movement resistance is reduced by utilizing the slope 413, so as to reduce the impact on the mud during the movement.

[0040] The above is based on the ideal embodiment of the utility model. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the invention. The technical scope of the invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A reciprocating wear testing machine, comprising a workbench (1), characterized in that: Also includes: A mud box (2), wherein the mud box (2) is placed on the workbench (1); A force measuring assembly (3), the force measuring assembly (3) being mounted on the workbench (1), the force measuring assembly (3) comprising a force measuring bracket (31) and a vertical shaft (32), and an upper pattern (33) mounted on the bottom of the vertical shaft (32); A motion assembly (4), the motion assembly (4) comprising a first bracket (41) and a second bracket (42) mounted on the workbench (1), a linear guide rail (43) being fixed between the first bracket (41) and the second bracket (42), a mounting plate (44) being slidably mounted on the linear guide rail (43), a groove (45) being provided on the mounting plate (44), a fixture plate (46) being mounted on the mounting plate (44), the bottom of the fixture plate (46) passing through the groove (45) and being placed on the bottom of the mud box (2), a lower sample (47) being mounted on the fixture plate (46), and the upper sample being in contact with the lower sample; A crank assembly (5), wherein the crank assembly (5) is used to drive the mounting plate (44) to move left and right along the linear guide rail (43).

2. A reciprocating wear testing machine as claimed in claim 1, characterized in that: A mud cover (21) is installed on the top of the mud box (2), and two elongated holes (22) are provided on the top of the mud cover (21). The fixture plate (46) is inserted into the mud box (2) through the elongated holes (22).

3. A reciprocating wear testing machine as claimed in claim 2, characterized in that: The fixture plate (46) is in the shape of a groove. A sample groove (48) is provided at the inner bottom of the fixture plate (46). The lower sample (47) is installed in the sample groove (48). A fixed connecting plate (49) is fixed at the top of the fixture plate (46). A hanging ear (410) is fixed at the top of the connecting plate (49). The connecting plate (49) can move left and right in the long hole (22). The hanging ear (410) is fixed on the mounting plate (44).

4. A reciprocating wear testing machine as claimed in claim 3, characterized in that: The bottom of the vertical shaft (32) passes through the mounting plate (44) and the mud cover (21), and the diameter of the vertical shaft (32) is 30 mm.

5. A reciprocating wear testing machine as claimed in claim 4, characterized in that: The crank assembly (5) comprises a connecting disk bracket (51) installed on one side of the first bracket (41), the connecting disk bracket (51) and a motor (52) installed at the bottom of the connecting disk, and a rotating disk (53) installed at the top of the connecting disk, a slide groove (54) is provided on the top of the rotating disk (53), a slider (55) is installed inside the slide groove (54), the slider (55) is slidably installed in the slide groove, and a connecting rod (56) is installed on the top of the slider.

6. A reciprocating wear testing machine as claimed in claim 5, characterized in that: An extension plate (411) is fixed to one side of the mounting plate (44), and one end of the connecting rod (56) is fixed to the extension plate (411).

7. A reciprocating wear testing machine as claimed in claim 6, characterized in that: Baffles (412) are installed on both sides of the sample slot (48), and one side of the baffle (412) is provided with an inclined surface (413).

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