Safety valve punching positioning groove size detection tool

Abstract

The utility model discloses a safety valve punching positioning groove size detection tool, which comprises a neck bush, a first support block, a second support block, a third support block, a tension spring, a telescopic guide rod, a detection insert block, a cam, a safety valve main body and a rotating shaft, the neck bush is provided with a limiting shoulder matched with the safety valve body, and the first supporting block, the second supporting block and the third supporting block are sequentially and fixedly installed in the neck bush from left to right. By arranging the neck bush, the problem that too many annular grooves in the inner cavity of the safety valve body are uneven is solved, coaxial positioning can be conducted by means of the minimum-diameter section of the inner cavity of the safety valve body, and the depth size of the positioning groove is detected and judged by detecting the situation that the embedded block is embedded into the positioning groove; whether a gap exists between the detection insert block and the positioning groove can be detected and judged by pulling the neck bush, and the detection operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of well completion tools, in particular to a tool for detecting the size of a safety valve drilling positioning groove. Background Art

[0002] If leakage occurs in the completion tool casing during oil extraction, high-pressure gas can enter the shallow, loose formation, leading to uncontrolled formation fluid flow and pollution of the surface environment and groundwater resources. To ensure safe production, all wells with self-flowing or self-overflowing capabilities must be equipped with a downhole safety valve during completion operations. The safety valve body's inner wall is punched with positioning grooves machined via electrospark machining. Currently, there is a lack of specialized tools to measure the size and position of these grooves, making it difficult to determine their size and position. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a tool which is convenient for detecting the size of the punching positioning groove of the safety valve.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a safety valve punching positioning groove size detection tool, including an inner sleeve, a first support block, a second support block, a third support block, a tension spring, a telescopic guide rod, a detection insert, a cam, a safety valve body and a rotating shaft, the inner sleeve is slidably installed in the safety valve body, the inner sleeve has a limiting shoulder that matches the safety valve body, the first support block, the second support block, and the third support block are fixedly installed in the inner sleeve from left to right in sequence, and the first support block, the second support block, and the third support block are fixed in the inner sleeve. A ball bearing is coaxially and fixedly installed, the rotating shaft is fixedly installed in the rotating body of the ball bearing, the cam is fixedly sleeved on the rotating shaft, the four telescopic guide rods are distributed in a rectangular shape and the upper part is fixedly installed on the inner sleeve, the detection insert is fixedly installed on the lower part of the telescopic guide rod, the top surface of the detection insert is always pressed on the cam, the shape and size of the bottom surface of the detection insert are set to correspond to the shape and size of the positioning groove of the inner sleeve, the tension spring is sleeved on the inner tube of the telescopic guide rod, and the upper and lower ends of the tension spring are respectively fixedly connected to the sleeve of the telescopic guide rod and the detection insert.

[0005] Preferably, the outer edge of the right end surface of the inner sleeve is configured as an oblique angle structure.

[0006] Preferably, a handwheel is fixedly sleeved on the left end of the rotating shaft.

[0007] Preferably, it also includes a touch switch and an indicator light, which are connected in series to the power supply through a circuit, and a semicircular protrusion corresponding to the touch switch is fixedly provided on the outer edge of the handwheel, and the semicircular protrusion is set 179.5° opposite to the highest point position of the cam.

[0008] Compared with the prior art, the benefits of the present invention are: by providing an inner sleeve, the problem of excessive and uneven annular grooves in the inner cavity of the safety valve body is solved, and coaxial positioning can be performed with the help of the minimum diameter section of the inner cavity of the safety valve body. By detecting the situation of the embedded block in the positioning groove, the depth size of the positioning groove can be detected and judged. By pulling the inner sleeve, it is possible to detect and judge whether there is a gap between the detection block and the positioning groove, which has the advantage of convenient detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] Figure 1 It is a schematic diagram of the internal structure of the utility model. DETAILED DESCRIPTION

[0011] The present invention is described in detail below in conjunction with specific embodiments:

[0012] like Figure 1 The tooling for detecting the size of the punching and positioning groove of a safety valve shown in the figure includes an inner sleeve 1, a first support block 2, a second support block 3, a third support block 4, a tension spring 5, a telescopic guide rod 51, a detection block 6, a cam 7, a safety valve body 8 and a rotating shaft 9. The inner sleeve 1 is slidably installed in the safety valve body 8. The inner sleeve 1 has a limiting shoulder 21 that cooperates with the safety valve body 8. The first support block 2, the second support block 3, and the third support block 4 are fixedly installed in the inner sleeve 1 from left to right in sequence. Ball bearings are coaxially and fixedly installed in the first support block 2, the second support block 3, and the third support block 4. Bearing, the rotating shaft 9 is fixedly installed in the rotating body of the ball bearing, the cam 7 is fixedly sleeved on the rotating shaft 9, the four telescopic guide rods 61 are distributed in a rectangular shape and the upper part is fixedly installed on the inner sleeve 1, the detection block 6 is fixedly installed on the lower part of the telescopic guide rod 61, the top surface of the detection block 6 is always pressed on the cam 7, the shape and size of the bottom surface of the detection block 6 are set corresponding to the shape and size of the positioning groove of the inner sleeve 1, the tension spring 5 is sleeved on the inner tube of the telescopic guide rod 51, and the upper and lower ends of the tension spring 5 are respectively fixedly connected to the sleeve of the telescopic guide rod 51 and the detection block 6.

[0013] The outer edge of the right end surface of the inner sleeve 1 is set to an oblique angle structure to prevent the inner sleeve 1 from sliding through the narrow part of the hole in the safety valve body 8 and causing jamming.

[0014] A hand wheel 31 is fixedly sleeved on the left end of the rotating shaft 9 so that the hand wheel 31 can be used to rotate the combination of the rotating shaft 9 and the cam 7 .

[0015] It also includes a touch switch 20 and an indicator light, which are connected in series to the power supply through a circuit. A semicircular protrusion 30 corresponding to the touch switch 20 is fixedly provided on the outer edge of the handwheel 31. The semicircular protrusion 30 is set 179.5° opposite to the highest point of the cam 7. The touch switch 20 is activated to light up the indicator light, which can intuitively judge the rotation angle of the combination of the rotating shaft 9 and the cam 7.

[0016] The inner sleeve 1 is slidably installed in the inner cavity of the safety valve body 8, and is positioned by contacting the left end surface of the safety valve body 8 through the limit shoulder 21. At this time, the lowest point of the cam 7 contacts the detection insert 6. Under the action of the tension spring 5, the detection insert 6 is located in the safety valve body 8 and does not interfere with the inner cavity of the safety valve body 8. The combination of the rotating shaft 9 and the cam 7 is rotated, and the cam 7 moves the detection insert 6 downward until it is embedded in the positioning groove 81 of the safety valve body 8. When the rotating shaft 9 can rotate 179.5°, the depth of the positioning groove 81 is The size is qualified. When the rotating shaft 9 rotates less than 179.5°, the depth of the positioning groove 81 is too small. When the rotating shaft 9 rotates more than 179.5°, the depth of the positioning groove 81 is too small. When the depth of the positioning groove 81 is qualified, pull the inner sleeve 1 outward. If the inner sleeve 1 is displaced, there is a gap between the detection block 6 and the positioning groove 81, and the processing size of the positioning groove 81 is unqualified. After the inspection is completed, the rotating shaft 9 rotates and resets, and the detection block 6 rebounds and resets, and the inner sleeve 1 is separated from the safety valve body 8.

Claims

1. A tool for detecting the size of a safety valve hole positioning groove, characterized by: The invention comprises an inner sleeve (1), a first support block (2), a second support block (3), a third support block (4), a tension spring (5), a telescopic guide rod (51), a detection insert (6), a cam (7), a safety valve body (8) and a rotating shaft (9), wherein the inner sleeve (1) is slidably mounted in the safety valve body (8), and the inner sleeve (1) has a limiting shoulder (21) matched with the safety valve body (8), the first support block (2), the second support block (3) and the third support block (4) are fixedly mounted in the inner sleeve (1) from left to right, and ball bearings are coaxially and fixedly mounted in the first support block (2), the second support block (3) and the third support block (4). The rotating shaft (9) is fixedly mounted in the rotating body of the ball bearing, the cam (7) is fixedly sleeved on the rotating shaft (9), the four telescopic guide rods (51) are distributed in a rectangular shape, and the upper part thereof is fixedly mounted on the inner sleeve (1), the detection insert (6) is fixedly mounted on the lower part of the telescopic guide rod (51), the top surface of the detection insert (6) is always pressed on the cam (7), the shape and size of the bottom surface of the detection insert (6) are set corresponding to the shape and size of the positioning groove of the inner sleeve (1), the tension spring (5) is sleeved on the inner tube of the telescopic guide rod (51), and the upper and lower ends of the tension spring (5) are respectively fixedly connected to the sleeve of the telescopic guide rod (51) and the detection insert (6).

2. The safety valve punching and positioning groove size detection tool according to claim 1 is characterized by: The outer edge of the right end surface of the inner sleeve (1) is configured as an oblique angle structure.

3. The safety valve punching and positioning groove size detection tool according to claim 1 is characterized by: A hand wheel (31) is fixedly sleeved and mounted on the left end of the rotating shaft (9).

4. The safety valve punching and positioning groove size detection tool according to claim 3 is characterized by: The hand wheel (31) further comprises a touch switch (20) and an indicator light, wherein the touch switch and the indicator light are connected in series to a power supply via a circuit, and a semicircular protrusion (30) corresponding to the touch switch (20) is fixedly provided on the outer edge of the hand wheel (31), and the semicircular protrusion (30) is arranged in a 179.5° opposite direction to the highest point position of the cam (7).

Images