A downhole manual valve switching aid

Abstract

The utility model discloses a kind of auxiliary tools of underground manual valve switch, belong to valve tool technical field.It includes pressurizing rod, sleeve, telescopic rod, telescopic rod sleeve and chuck device;Telescopic rod sleeve is vertically fixed in chuck device top surface, telescopic rod is inserted into telescopic rod sleeve, sleeve is horizontally arranged on telescopic rod upper end, pressurizing rod is inserted into sleeve;Telescopic rod sleeve is equipped with strip slide groove and hook-shaped clamping groove, telescopic rod is equipped with sliding rod, sliding rod enters clamping groove locking along strip slide groove, and can be fixed by pin shaft device auxiliary;Chuck device includes chuck, three clamping jaws, three base blocks and adjusting screw, the spacing of adjustable clamping jaw can be clamped to valve hand wheel.The tool can be operated in wellhead remote underground valve, avoid personnel downhole risk, length and clamping jaw are adjustable, connection is firm, torque transmission is stable and reliable, adapt to different depth and specification valve.

Description

Technical Field

[0001] This utility model belongs to the field of valve tool technology, specifically relating to an auxiliary tool for manual valve switching in wells. Background Technology

[0002] In municipal pipeline networks, petrochemicals, energy and power industries, a large number of manual valves are installed in narrow, enclosed spaces such as inspection wells and underground pipe corridors. Operating these valves using traditional methods requires personnel to go directly down into the well, facing significant safety risks such as oxygen deficiency, toxic gases, slipping, and falls, and is also inefficient.

[0003] In the existing technology, some extended-rod wrench tools have emerged to enable operations on the well site. However, these tools generally have the following shortcomings: First, the length is fixed or inconvenient to adjust, making it impossible to quickly adapt to valve wells of different depths; second, the connection and fixing method with the valve handwheel is unreliable, and it is easy to slip or detach when large torque is applied; third, the overall stability and rigidity of the tool are insufficient, and the long rod is prone to bending or unexpected extension and retraction when under force, affecting operational safety and efficiency.

[0004] Therefore, there is an urgent need for a remote valve operating tool that can quickly adapt to different operating distances, has a firm connection with the valve, and provides stable and reliable transmission. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned technical problems and provide an auxiliary tool for manual valve switching in wells.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A downhole manual valve switching auxiliary tool includes a pressure rod 1, a sleeve 2, a telescopic rod 3, a telescopic rod sleeve 4, and a chuck device. The telescopic rod sleeve 4 is vertically fixed in the middle of the top surface of the chuck device. The telescopic rod 3 extends into the telescopic rod sleeve 4. The sleeve 2 is horizontally fixed at the upper end of the telescopic rod 3. The pressure rod 1 is movably inserted into the sleeve 2.

[0008] The telescopic rod sleeve 4 has a vertical strip groove 17. On the side wall of the telescopic rod sleeve 4 on one side of the strip groove 17, a plurality of hook-shaped slots 18 are vertically and evenly provided. The telescopic rod 3 has a corresponding sliding rod 19 fixed on its side wall. The sliding rod 19 is inserted into the strip groove 17.

[0009] The chuck device includes a chuck 7, three jaws 8, three base blocks 11, and three adjusting screws 14. Three radially evenly spaced sliding grooves 12 are formed on the bottom surface of the chuck 7. A second sliding groove 13 is formed in the middle of the side wall of the first sliding groove 12. The three base blocks 11 are slidably disposed in the first sliding groove 12 via sliders 16 on the side wall and the second sliding groove 13. The three jaws 8 are respectively fixed in the middle of the bottom surface of the three base blocks 11. The front ends of the three adjusting screws 14 pass through the chuck 7 and the base blocks 11 respectively, extend towards the middle of the chuck 7 in the first sliding groove 12, and the adjusting screws 14 are threadedly connected to the base blocks 11.

[0010] Furthermore, the cross-sections of the telescopic rod 3 and the telescopic rod sleeve 4 are both circular, triangular, square, or hexagonal.

[0011] Furthermore, the telescopic rod 3 is vertically and evenly provided with a plurality of equidistant pin holes 5, and the telescopic rod sleeve 4 above and below the slot 18 is provided with pin holes 5, and the telescopic rod 3 and the telescopic rod sleeve 4 are fixed by a pin shaft device that inserts into the pin holes 5; the pin shaft device serves as an auxiliary fixing device for the locking mechanism between the slide rod 19 and the slot 18.

[0012] Furthermore, the pin device includes a pin 6 and a second pin 10. One end of the pin 6 is provided with a cap, and after the other end is inserted into the pin hole 5, the cap limits its position to prevent it from falling off. The other side of the pin 6 is provided with a vertical pin hole, and the second pin 10 is inserted into the pin hole to fix the pin 6.

[0013] Furthermore, the three slides 12 are connected in the middle, and a central block 15 is provided in the middle position. The end of the adjusting screw 14 is movably connected through the bearing central block 15.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model enables personnel to remotely operate valves in dangerous areas from a safe location, fundamentally avoiding various safety risks associated with personnel going down into the well, thus ensuring high safety.

[0016] 2. The length of the rod assembly of this utility model can be adjusted steplessly or in multiple positions, and the opening size of the chuck is adjustable, so that one set of tools can adapt to the operation requirements of valves of different depths and specifications, and has strong versatility;

[0017] 3. The locking mechanism of the slide bar and hook-shaped slot of this utility model realizes quick length setting and rigid locking in the form of "one push and one twist". Combined with the auxiliary fixing device, it ensures the overall stability and reliability of the tool under high load torque.

[0018] 4. The non-circular cross-section rod anti-rotation design and the rigid snap-fit ​​method between the chuck and the handwheel spokes of this utility model minimize force loss and enable the torque applied by the operator to be effectively transmitted to the valve stem.

[0019] 5. The pin device of this utility model adopts a double fixing design to ensure that the telescopic rod will not slide or rotate during operation, thus improving the stability of the tool. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model in use;

[0021] Figure 2 This is a schematic diagram of the telescopic rod structure of Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the pin structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the chuck structure of this utility model;

[0024] Figure 5 for Figure 4 Front view structural diagram;

[0025] Figure 6 for Figure 5 A cross-sectional view of the BB plane;

[0026] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of this utility model during use;

[0027] In the diagram: 1-Pressure rod; 2-Sleeve; 3-Telescopic rod; 4-Telescopic rod sleeve; 5-Pin hole; 6-Pin shaft; 7-Chuck; 8-Claw; 9-Valve; 10-Pin shaft two; 11-Base block; 12-Slide groove one; 13-Slide groove two; 14-Adjusting screw; 15-Center block; 16-Slider; 17-Strip slide groove; 18-Card groove; 19-Slide rod. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0029] Example 1

[0030] like Figure 1-6As shown, an auxiliary tool for manual valve switching in wells includes a pressure rod 1, a sleeve 2, a telescopic rod 3, a telescopic rod sleeve 4, and a chuck device. The telescopic rod sleeve 4 is vertically fixed in the middle of the top surface of the chuck device. The telescopic rod 3 extends into the telescopic rod sleeve 4. Both the telescopic rod 3 and the telescopic rod sleeve 4 are cylindrical. The sleeve 2 is horizontally fixed at the upper end of the telescopic rod 3. The pressure rod 1 is movably inserted into the sleeve 2. The telescopic rod 3 is also vertically and evenly provided with a plurality of equidistant pin holes 5.

[0031] The telescopic rod sleeve 4 has a vertical strip-shaped groove 17. On one side of the strip-shaped groove 17, multiple hook-shaped slots 18 are vertically and evenly arranged on the side wall of the telescopic rod sleeve 4. A sliding rod 19 is fixed at a corresponding position on the side wall of the telescopic rod 3. The sliding rod 19 is inserted into the strip-shaped groove 17. The telescopic rod sleeve 4 above and below the slots 18 has pin holes 5. The telescopic rod 3 and the telescopic rod sleeve 4 are fixed by a pin device that inserts into the pin hole 5. The pin device serves as an auxiliary fixing device for the locking mechanism between the sliding rod 19 and the slot 18.

[0032] The chuck device includes a chuck 7, three jaws 8, three base blocks 11, and three adjusting screws 14. Three radially evenly spaced sliding grooves 12 are formed on the bottom surface of the chuck 7. A second sliding groove 13 is formed in the middle of the side wall of each sliding groove 12. The three base blocks 11 are slidably disposed in the sliding grooves 12 via sliders 16 on the side walls and the second sliding groove 13. The three jaws 8 are respectively fixed to the middle of the bottom surface of the three base blocks 11. The front ends of the three adjusting screws 14 pass through the chuck 7 and the base blocks 11, extending towards the center of the chuck 7 within the sliding grooves 12, and the adjusting screws 14 are threadedly connected to the base blocks 11. The three sliding grooves 12 are connected in the middle, and a center block 15 is provided at the center position. The ends of the adjusting screws 14 are movably connected to the center block 15 via bearings.

[0033] The pin assembly includes a pin 6 and a second pin 10. One end of the pin 6 is provided with a cap, and after the other end is inserted into the pin hole 5, the cap limits its position to prevent it from falling off. The other side of the pin 6 is provided with a vertical pin hole, and the second pin 10 is inserted into the pin hole to fix the pin 6.

[0034] Example 2

[0035] like Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that: the cross-section of both the telescopic rod 3 and the telescopic rod sleeve 4 is a regular hexagon; the telescopic rod sleeve 4 does not have the strip groove 17, the slot 18, and the slide rod 19; and the telescopic rod 3 and the telescopic rod sleeve 4 are vertically and evenly provided with a plurality of pin holes 5, which are fixed by a pin shaft device.

[0036] The cross-sections of the telescopic rod 3 and the telescopic rod sleeve 4 can also be equilateral triangles or squares, with other structures remaining the same.

[0037] The working process of this utility model:

[0038] 1. Working process of Example 1:

[0039] According to the well depth of valve 9, adjust the extension rod 3 to make the total length of the tool slightly greater than the well depth. Rotate the extension rod 3 by applying pressure rod 1 so that slide rod 19 is aligned with strip groove 17 and slides into slot 18. When slide rod 19 reaches the innermost end of slot 18, the extension rod 3 coincides with the pin hole 5 on extension rod sleeve 4. Insert pin 6 into the lower pin hole 5, and then insert pin 10 into the pin hole on pin 6 to fix the extension rod 3 and prevent extension rod sleeve 4 from coming off the extension rod 3. Insert another pin 6 into the upper pin hole 5 to fix the length of extension rod 3 and prevent extension rod 3 from moving axially.

[0040] According to the size of the handwheel of valve 9, use a screwdriver to turn the three adjusting screws 14 so that the three base blocks 11 slide in the slide groove 12, and adjust the position of the pawl 8 so that its distance matches the size of the handwheel of valve 9;

[0041] Hold the pressure rod 1, extend the chuck 7 down into the well, align the three jaws 8 with the handwheel spokes of the valve 9 and engage them.

[0042] The operator rotates and presses down on the pressure rod 1 at the surface of the well, which drives the valve handwheel to rotate through the telescopic rod 3, chuck 7 and pawl 8, thereby opening or closing the valve.

[0043] 2. Working process of Example 2:

[0044] Insert the telescopic rod 3 into the telescopic rod sleeve 4 so that the telescopic rod 3 corresponds to the pin hole 5 on the telescopic rod sleeve 4. Insert the two pins 6 into the pin holes 5 on the upper and lower sides respectively. Then insert the second pin 10 into the pin hole on the pin 6 to fix the telescopic rod 3 and the telescopic rod sleeve 4. Then continue the subsequent operation according to the steps of Example 1 to complete the valve opening and closing.

[0045] After use, remove pin 2 10, remove pin 6 from pin hole 5, pull out telescopic rod 3, and remove pressure rod 1 to achieve convenient disassembly and storage.

[0046] This invention is applicable not only to downhole valves but also to manual valve operation in other confined spaces. By adjusting the length of the telescopic rod, it can accommodate depths ranging from 0.5 meters to 3 meters. All components are made of carbon steel with a galvanized surface for rust prevention, ensuring durability.

Claims

1. A downhole manual valve switching auxiliary tool, characterized in that: It includes a pressure rod (1), a sleeve (2), a telescopic rod (3), a telescopic rod sleeve (4), and a chuck device. The telescopic rod sleeve (4) is vertically fixed in the middle of the top surface of the chuck device. The telescopic rod (3) extends into the telescopic rod sleeve (4). The sleeve (2) is horizontally fixed at the upper end of the telescopic rod (3). The pressure rod (1) is movably inserted into the sleeve (2). A vertical strip groove (17) is provided on the telescopic rod sleeve (4). Multiple hook-shaped slots (18) are vertically and evenly provided on the side wall of the telescopic rod sleeve (4) on one side of the strip groove (17). A sliding rod (19) is fixed at the corresponding position on the side wall of the telescopic rod (3). The sliding rod (19) is inserted into the strip groove (17). The chuck device includes a chuck (7), three jaws (8), three base blocks (11), and three adjusting screws (14). Three radially uniform sliding grooves (12) are provided on the bottom surface of the chuck (7). A sliding groove (13) is provided in the middle of the side wall of the sliding groove (12). The three base blocks (11) are slidably disposed in the sliding groove (12) through the slider (16) on the side wall and the sliding groove (13). The three jaws (8) are respectively fixed in the middle of the bottom surface of the three base blocks (11). The front ends of the three adjusting screws (14) pass through the chuck (7) and the base blocks (11) respectively, and extend towards the middle of the chuck (7) in the sliding groove (12). The adjusting screws (14) are threadedly connected to the base blocks (11).

2. The downhole manual valve switching auxiliary tool according to claim 1, characterized in that: The cross-sections of the telescopic rod (3) and the telescopic rod sleeve (4) are both circular, triangular, square or hexagonal.

3. The downhole manual valve switching auxiliary tool according to claim 1, characterized in that: The telescopic rod (3) is also vertically and evenly provided with a plurality of equidistant pin holes (5), and the telescopic rod sleeve (4) above and below the slot (18) is provided with pin holes (5), and the telescopic rod (3) and the telescopic rod sleeve (4) are fixed by a pin shaft device that inserts into the pin holes (5); the pin shaft device serves as an auxiliary fixing device for the locking mechanism between the slide rod (19) and the slot (18).

4. The downhole manual valve switching auxiliary tool according to claim 3, characterized in that: The pin device includes a pin (6) and a second pin (10). One end of the pin (6) is provided with a cap, and after the other end is inserted into the pin hole (5), the cap limits its position to prevent it from falling off. The other side of the pin (6) is provided with a vertical pin hole, and the second pin (10) is inserted into the pin hole to fix the pin (6).

5. The auxiliary tool for manually operating downhole valves according to claim 1, characterized in that: The three slides (12) are connected in the middle, and a center block (15) is provided in the middle position. The end of the adjusting screw (14) is movably connected through the bearing center block (15).

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