A handheld device for opening a valve under pressure and testing torque

Abstract

The present invention relates to the technical field of special equipment for fracturing wellheads, and specifically to a handheld device for opening a valve under pressure and testing torque, which includes a device body, a mounting ring fixedly mounted on the device body, an annular push ring groove provided on the outer wall of the mounting ring, and a circle counting block, an annular groove, a counting ball and a counter provided inside the annular push ring groove. The present invention has two measurement modes, the first mode is used to measure the instantaneous torque when the valve is opened, and the power supply of the device body is automatically cut off by detecting whether the rotating head is rotating, thereby reducing the measurement error. The second mode is used to measure the number of rotations of the handwheel rod, so that the circle counting block is moved into the annular groove. When the device body is started, the counting ball lifts the circle counting block to contact the counter once for each rotation of the rotating shaft, and the number of rotations of the handwheel rod is determined by the number of times the counting ball contacts the counter.

Description

Technical Field

[0001] The invention relates to the technical field of special equipment for fracturing wellheads, and in particular to a handheld device for opening a valve under pressure and testing torque. Background Art

[0002] As the core component of wellhead equipment and fracturing manifold, fracturing valve is responsible for opening or cutting off pipeline medium and controlling the flow direction of high-pressure medium. Fracturing valve is a sliding valve with a parallel gate as the closing part. Its closing part is a single gate. For a flat gate valve with a single gate, the sealing pressure between the gate and the valve seat is generated by the medium pressure pushing the floating valve seat, thereby achieving a sealing effect.

[0003] When the fracturing valve is sealed, it is necessary to open the valve under pressure. Due to the large diameter and high pressure of the fracturing valve, the upstream and downstream valve seats are tightly attached to the gate plate under the push of the medium, making it difficult to open the valve. There are two ways to open the valve in the prior art, namely manual opening and opening with an electric wrench. The manual opening method requires the coordinated operation of multiple people, which is time-consuming and labor-intensive and not worth promoting; the electric wrench used to open the valve is mostly an electric torque wrench. When using it, press the wrench on the valve handwheel rod, press the wrench switch until you hear a "bang", and immediately turn off the wrench switch. Since the torque value required to be output at the moment of valve opening is the largest, when the valve is opened, the output torque required is less than the instantaneous torque of the valve opening. The above method is difficult to accurately control the closing time of the wrench, and it is difficult to measure the instantaneous torque when the valve is opened. In addition, the existing electric torque wrench has a relatively single function and cannot measure the number of valve opening circles. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and provide a handheld device with two working modes for opening a valve under pressure and testing the torque, so as to solve the problem that it is difficult to accurately control the closing of the electric torque wrench at the moment of opening the valve.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A handheld device for opening a valve under pressure and testing torque, comprising a device body, a valve body and a support plate, wherein the output end of the device body is coaxially connected with a rotating shaft and a rotating head respectively, the rotating head is installed in cooperation with a torque reading display instrument, the torque reading display instrument is installed in cooperation with a conversion sleeve, and the conversion sleeve is sleeved into a handwheel rod of the valve body;

[0007] A mounting ring is fixedly mounted on the device body, the mounting ring is sleeved on the rotating shaft, and there is a gap between the mounting ring and the rotating shaft, the rotating shaft is respectively provided with teeth and a counting ball, a rectangular groove and an annular groove are opened in the mounting ring, and the rectangular groove and the annular groove are respectively matched with the teeth and the counting ball;

[0008] An annular push ring groove is provided on the outer wall of the mounting ring, and the annular push ring groove is installed in cooperation with the push ring. A push groove is provided in the annular push ring groove, and a parking plate is provided in the push groove. Two cavities of the same size are provided inside the push ring, and the two cavities are respectively an instantaneous cavity and a counting cavity. Moving grooves are symmetrically provided on both sides of the instantaneous cavity and the counting cavity, and springs are installed inside the moving grooves. The springs inside the instantaneous cavity and the counting cavity are respectively connected to the first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate are respectively connected to the measuring block and the counting circle block. A power switch and a counter are installed inside the instantaneous cavity and the counting cavity. The measuring block passes through the push groove and cooperates with the teeth, and the counting circle block passes through the push groove and cooperates with the counting ball. As a further optimization or improvement of this scheme, a rotating sleeve is rotatably installed on the outer wall of the mounting ring, and a threaded sleeve is rotatably installed on the bottom of the rotating sleeve. The threaded sleeve is threadedly connected to the handle, and the threaded sleeve abuts against the outer wall of the mounting ring.

[0009] As a further optimization or improvement of the present solution, an anti-dropout platform is provided on the handle, and the anti-dropout platform is located inside the rotating sleeve, and the anti-dropout platform cooperates with the threaded sleeve.

[0010] As a further optimization or improvement of the present solution, the power switch is connected to the device body, a display is mounted on the device body, and the display is connected to the counter.

[0011] As a further optimization or improvement of this solution, the support plate is threadedly connected to the threaded adjustment column, a support frame is provided on the support plate, a reinforcing rib is welded at the connection between the support frame and the support plate, a matching ring is provided on the support frame, the matching ring is slidably installed with the rotating sleeve, a force dissipation groove is provided on the matching ring, and the force dissipation groove is matched with the handle. As a further optimization or improvement of this solution, a rubber ring is installed on the outer wall of the push ring.

[0012] As a further optimization or improvement of the present solution, a bevel is machined on a side of the tooth close to the rotating shaft.

[0013] Beneficial effects of the present invention:

[0014] (1) The present invention has two measurement modes, and the modes are switched by pushing the push ring. The first mode is used to measure the instantaneous torque when the valve is opened. The push ring is pushed, and the push ring drives the measuring block to move to the top of the tooth. At this time, the measuring block is pressed against the power switch, and the device body is powered on. The push ring drives the ring block to move to the parking plate. At this time, the spring on the ring block is in a stretched state, and the spring on the measuring block is also in a stretched state. When the device body is started, the device body drives the handwheel rod to rotate through the conversion sleeve. The tooth rotates and drives the measuring block to move down, and the measuring block is separated from the power switch. At this time, the device body is closed, and the instantaneous torque when the valve is opened is determined by observing the torque value on the torque reading display. The present invention detects the rotation of the rotating head and then automatically cuts off the power supply of the device body, thereby accurately controlling the closing time of the wrench and reducing the measurement error of the instantaneous torque. The second mode is used to measure the number of rotations of the handwheel rod. The push ring is pushed in the opposite direction, and the push ring drives the measuring block to move to the parking plate, and the push ring drives the circle counting block to move into the circular groove. When the device body is started, the counting ball lifts the circle counting block to contact the counter once for each rotation of the rotating shaft. The number of rotations of the handwheel rod is determined by the number of times the counting ball contacts the counter.

[0015] (2) When the device body of the present invention is working, the reaction force generated by the rotating head and the rotating shaft is transmitted to the handle through the rotating sleeve, wherein the direction of the reaction force on the handle is opposite to the rotation direction of the rotating head. Therefore, when the rotating head rotates clockwise, the handle needs to be adjusted and fixed in the clockwise direction, and the rotating sleeve and the handle need to be inserted into the matching sleeve ring and the force dissipation groove, wherein the rotating sleeve cooperates with the matching sleeve ring to provide support for the head of the device body; when the handle and the force dissipation groove cooperate, due to the clockwise adjustment of the handle, the contact surface of the handle and the support frame is perpendicular. When the device body is working, the support frame can accurately offset the reaction force on the handle by vertically contacting the handle, which can effectively eliminate the reaction force generated when the device body is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is an exploded view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the device structure.

[0020] Figure 4 This is an exploded view of the device structure.

[0021] Figure 5 It is a cross-sectional view of the mounting ring structure.

[0022] Figure 6 for Figure 5 A magnified view of the structure of part A.

[0023] Figure 7 This is a schematic diagram of the structure of the measuring block and the circle counting block.

[0024] Figure 8 This is the working fit diagram of the mounting ring and the rotating shaft.

[0025] Fig. 9 Schematic diagram of the internal structure of the mounting ring.

[0026] Fig.10 for Fig. 9 Enlarged view of the structure of part B.

[0027] Fig.11 It is a schematic diagram of the connection between the rotating sleeve, the threaded sleeve and the handle.

[0028] Fig.12 Assembly drawing for matching collar and device body.

[0029] Fig.13 To match the connection structure diagram of the ring and the support frame.

[0030] The following are marked in the figure: 1. Device body; 2. Torque reading display; 3. Conversion sleeve; 4. Valve body; 5. Rotating head; 6. Handle; 7. Threaded sleeve; 8. Rotating sleeve; 9. Mounting ring; 10. Push ring; 11. Rotating shaft; 12. Teeth; 13. Counting ball; 14. Rubber ring; 15. Cavity; 16. Moving groove; 17. Power switch; 18. Spring; 19. First connecting plate; 20. Measuring block; 21. Counter; 22. Dissipation groove; 23. Second connecting plate; 24. Counting ring block; 25. Annular push ring groove; 26. Circular ring groove; 27. Rectangular groove; 28. Push groove; 29. ​​Parking plate; 30. Support plate; 31. Threaded adjustment column; 32. Support frame; 33. Matching ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 13A handheld device for opening a valve under pressure and testing torque, comprising a device body 1, a valve body 4 and a support plate 30, wherein the output end of the device body 1 is coaxially connected with a rotating shaft 11 and a rotating head 5, respectively, the rotating head 5 is installed in cooperation with a torque reading display 2, the torque reading display 2 is installed in cooperation with a conversion sleeve 3, and the conversion sleeve 3 is inserted into a handwheel rod of the valve body 4;

[0033] The device body 1 is fixedly mounted with a mounting ring 9, which is sleeved on a rotating shaft 11, and there is a gap between the mounting ring 9 and the rotating shaft 11. The rotating shaft 11 is respectively provided with teeth 12 and a counting ball 13. A rectangular groove 27 and an annular groove 26 are provided in the mounting ring 9, and the rectangular groove 27 and the annular groove 26 are respectively matched with the teeth 12 and the counting ball 13;

[0034] An annular push ring groove 25 is provided on the outer wall of the mounting ring 9, and the annular push ring groove 25 is installed in cooperation with the push ring 10. A push groove 28 is provided in the annular push ring groove 25, and a parking plate 29 is arranged in the push groove 28. Two cavities 15 of the same size are provided inside the push ring 10, and the two cavities 15 are respectively an instantaneous cavity and a counting cavity. Moving grooves 16 are symmetrically provided on both sides of the instantaneous cavity and the counting cavity, and springs 18 are installed inside the moving grooves 16. The springs 18 inside the instantaneous cavity and the counting cavity are respectively connected to the first connecting plate 19 and the second connecting plate 23, which are respectively connected to the measuring block 20 and the counting circle block 24. A power switch 17 and a counter 21 are installed inside the instantaneous cavity and the counting cavity. The measuring block 20 passes through the push groove 28 to cooperate with the tooth 12, and the counting circle block 24 passes through the push groove 28 to cooperate with the counting ball 13.

[0035] It should be noted that the conversion sleeve 3 can be replaced according to different types of valve bodies 4, the torque reading display 2 can measure the torque value when the valve is opened in real time, the speed and direction of the device body 1 are adjustable, and the conversion sleeve 3 and the torque reading display 2 are conventional tools, and the present solution does not change their structures. The tooth top surface of the tooth 12 is wider than that of the ordinary tooth 12, thereby ensuring that the measuring block 20 can move and contact the top of the tooth 12. The power switch 17 is a push-type. When the power switch 17 is pressed, the power of the device body 1 is turned on, and when the power switch 17 is released, the power of the device body 1 is cut off.

[0036] This solution has two measurement modes, which can be switched by pushing the push ring 10. The first mode is used to measure the instantaneous torque when the valve is opened, see Figure 6, push the push ring 10, the push ring 10 drives the measuring block 20 to move to the tooth top of the tooth 12, at this time the measuring block 20 is against the power switch 17, the device body 1 is energized, the push ring 10 drives the circle counting block 24 to move to the parking plate 29, at this time the spring 18 on the circle counting block 24 is in a stretched state, the spring 18 on the measuring block 20 is also in a stretched state, when the device body 1 is started, the speed of the device body 1 gradually increases, until the moment when the device body 1 drives the handwheel rod to rotate through the conversion sleeve 3, the tooth 12 rotates and drives the measuring block 20 to move down, the measuring block 20 is out of contact with the power switch 17, at this time the device body 1 is closed, and the instantaneous torque when the valve is opened is determined by observing the torque value on the torque reading display 2. The second mode is used to measure the number of rotations of the handwheel rod. The pushing ring 10 is pushed in the reverse direction. The pushing ring 10 drives the measuring block 20 to move to the parking plate 29. The pushing ring 10 drives the circle counting block 24 to move into the annular groove 26. When the device body 1 is started, the counting ball 13 lifts the circle counting block 24 to contact the counter 21 once for each rotation of the rotating shaft 11. The number of rotations of the handwheel rod is determined by the number of times the counting ball 13 contacts the counter 21.

[0037] See also Figure 3 , Figure 4 , Fig.11 , a rotating sleeve 8 is rotatably mounted on the outer wall of the mounting ring 9, a threaded sleeve 7 is rotatably mounted on the bottom of the rotating sleeve 8, the threaded sleeve 7 is threadedly connected to the handle 6, and the threaded sleeve 7 abuts against the outer wall of the mounting ring 9. It should be noted that since the device body 1 will generate a large reaction force when the valve body 4 is twisted, if the handle 6 is fixed, it is inconvenient for the operator to hold and apply force. Based on this, the holding direction of the handle 6 can be adjusted by rotating the rotating sleeve 8 and the mounting ring 9. The handle 6 is held and the threaded sleeve 7 is rotated, so that the handle 6 moves up and presses against the mounting ring 9, and then the rotating sleeve 8 and the handle 6 are fixed to an angle that is convenient for holding.

[0038] Specifically, the handle 6 is provided with an anti-dropout platform, and the anti-dropout platform is located in the rotating sleeve 8, and the anti-dropout platform cooperates with the threaded sleeve 7. It should be noted that the anti-dropout platform on the handle 6 can prevent the handle 6 from falling out of the rotating sleeve 8 due to excessive rotation of the handle 6.

[0039] Specifically, the power switch 17 is connected to the device body 1, and a display is installed on the device body 1, and the display is connected to the counter 21. It should be noted that the display is connected to the counter 21, and the timed laps on the counter 21 are displayed on the display; the power switch 17 is connected to the device body 1, and when the measuring block 20 is pressed to the power switch 17, the power of the device body 1 is turned on, and vice versa.

[0040] It should be noted that the height of spring 18 is higher than the height of lap counting block 24, which is mainly reflected in that, in the second mode, measuring block 20 is located on parking plate 29, and measuring block 20 can press power switch 17, and the power of device body 1 is turned on; in the first mode, lap counting block 24 is located on parking plate 29, and lap counting block 24 cannot contact counter 21, and the operating states of the two modes do not interfere with each other.

[0041] See also Figure 12-13 The support plate 30 is threadedly connected with the threaded adjustment column 31, and a support frame 32 is arranged on the support plate 30. A reinforcing rib is welded at the connection between the support frame 32 and the support plate 30. A matching ring 33 is arranged on the support frame 32. The matching ring 33 is slidably installed with the rotating sleeve 8. A force dissipation groove 22 is opened on the matching ring 33, and the force dissipation groove 22 is installed in cooperation with the handle 6.

[0042] It should be noted that the matching ring 33 is welded on the support frame 32, and the top two sides of the support frame 32 are cut with inclined surfaces, and rubber pads are arranged on the inclined surfaces. When the handle 6 is matched with the energy dissipation groove 22, the contact surface of the inclined surface of the handle 6 and the support frame 32 is perpendicular. The handle 6 has two working states. The first working state is that the operator holds the handle 6 after rotation and adjustment. At this time, the device body 1 can be used quickly. If multiple valve bodies 4 need to be opened, the reaction force generated by the first working state for a long time will cause the operator's arm to numb. At this time, the second working state needs to be used; the second working state is to match the rotating sleeve 8 with the matching ring 33, and the handle 6 is matched with the energy dissipation groove 22, so that the contact surface of the handle 6 and the support frame 32 is perpendicular. At this time, the reaction force generated by the device body 1 during operation is transmitted to the handle 6, and the support frame 32 is in vertical contact with the handle 6, so that the support frame 32 can effectively eliminate the reaction force on the handle 6.

[0043] It should be noted that the reaction force of the device body 1 when working is mainly generated at the head of the device body 1, that is, the rotating head 5 and the rotating shaft 11. When the device body 1 is working, the reaction force generated at the rotating head 5 and the rotating shaft 11 is transmitted to the handle 6 through the rotating sleeve 8, wherein the direction of the reaction force on the handle 6 is opposite to the rotation direction of the rotating head 5. Therefore, when the rotating head 5 rotates clockwise, the handle 6 needs to be adjusted and fixed in the clockwise direction, and the rotating sleeve 8 and the handle 6 are inserted into the matching sleeve ring 33 and the force dissipation groove 22, wherein the rotating sleeve 8 cooperates with the matching sleeve ring 33 to provide support for the head of the device body 1; when the handle 6 cooperates with the force dissipation groove 22, due to the clockwise adjustment of the handle 6, the contact surface of the handle 6 and the support frame 32 is perpendicular. When the device body 1 is working, the support frame 32 can accurately offset the reaction force on the handle 6 by vertically contacting the handle 6, and can effectively eliminate the reaction force generated when the device body 1 is working.

[0044] See also Figure 6-Figure 7 A rubber ring 14 is installed on the outer wall of the push ring 10. It should be noted that the rubber ring 14 plays an anti-slip role.

[0045] See also Figure 6 The side of the tooth 12 close to the rotating shaft 11 is beveled. It should be noted that when the push ring 10 is pushed to adjust the first working mode, the measuring block 20 can move along the bevel on the tooth 12 to the tooth top surface of the tooth 12. At this time, the measurement block 20 is raised to facilitate the pushing of the push ring 10.

[0046] It should be noted that if the device body 1 is only used to open the valve, the device body 1 does not need to measure the instantaneous torque and the number of opening rotations of the valve. At this time, in order to reduce the wear of the counting block 24 and the counting ball 13 on the device body 1 when not in operation, the measuring block 20 and the counting block 24 on the pushing ring 10 are moved out of the pushing groove 28 and into the annular pushing ring groove 25 by rotating the pushing ring 10, so that the measuring block 20 and the counting block 24 are separated from the contact with the teeth 12 and the counting ball 13. The measuring block 20 and the counting block 24 limit the pushing ring 10 by the tension spring 18. At this time, the counting block 24 and the counting ball 13 do not produce friction and collision when not in operation, thereby increasing the service life of the counting block 24 and the counting ball 13.

[0047] The implementation principle of the present invention is as follows: during the valve sealing test, the device body 1, the torque reading display 2, and the conversion sleeve 3 need to be assembled, and then the threaded adjustment column 31 is screwed, and the height of the support plate 30 is adjusted through the threaded cooperation between the threaded adjustment column 31 and the support plate 30, so that the height of the matching ring 33 on the support plate 30 matches the height of the handwheel rod of the valve body 4, and the angle of the handle 6 is adjusted so that the rotating sleeve 8 and the handle 6 on the device body 1 are respectively inserted into the matching ring 33 and the force dissipation groove 22, and at the same time, the conversion sleeve 3 is inserted into the handwheel rod on the valve body 4. At this time, the contact surface of the handle 6 and the support frame 32 is perpendicular, and the assembly is completed.

[0048] Adjust the first mode, push the push ring 10, and make the push ring 10 move along the annular push ring groove 25. The movement of the push ring 10 can drive the measuring block 20 to move to the tooth top of the tooth 12. At this time, the measuring block 20 presses the power switch 17, and the device body 1 is energized. The push ring 10 drives the circle counting block 24 to move to the parking plate 29. At this time, the spring 18 on the circle counting block 24 is in a stretched state, and the spring 18 on the measuring block 20 is also in a stretched state. When the device body 1 is started, the device body 1 drives the handwheel rod to rotate through the conversion sleeve 3. At this moment, the tooth 12 rotates, and the measuring block 20 moves down from the tooth top surface of the tooth 12 under the action of the spring 18. The measuring block 20 breaks away from the contact with the power switch 17. At this time, the device body 1 is closed, and the instantaneous torque when the valve is opened is determined by observing the torque value on the torque reading display 2. The second mode is used to measure the number of rotations of the handwheel rod. The push ring 10 is pushed in the opposite direction. The push ring 10 drives the measuring block 20 to move to the parking plate 29. The push ring 10 drives the circle counting block 24 to move into the annular groove 26. When the device body 1 is started, the counting ball 13 lifts the circle counting block 24 to contact the counter 21 once for each rotation of the rotating shaft 11. The number of rotations of the handwheel rod is determined by the number of times the counting ball 13 contacts the counter 21. During the operation of the device body 1, the reaction force generated by the device body 1 is transmitted to the handle 6. The support frame 32 can offset the reaction force on the handle 6 by vertically contacting the handle 6, which can effectively eliminate the reaction force generated by the device body 1 when the device body 1 is working.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A handheld device for opening a valve under pressure and testing torque, characterized in that: It comprises a device body (1), a valve body (4) and a support plate (30); the output end of the device body (1) is coaxially connected to a rotating shaft (11) and a rotating head (5), respectively; the rotating head (5) is mounted in cooperation with a torque reading display (2); the torque reading display (2) is mounted in cooperation with a conversion sleeve (3); and the conversion sleeve (3) is inserted into a handwheel rod of the valve body (4); A mounting ring (9) is fixedly mounted on the device body (1), the mounting ring (9) is sleeved on the rotating shaft (11), and a gap exists between the mounting ring (9) and the rotating shaft (11), the rotating shaft (11) is respectively provided with teeth (12) and a counting ball (13), a rectangular groove (27) and an annular groove (26) are formed in the mounting ring (9), and the rectangular groove (27) and the annular groove (26) are respectively matched with the teeth (12) and the counting ball (13); An annular push ring groove (25) is provided on the outer wall of the mounting ring (9), the annular push ring groove (25) is mounted in cooperation with the push ring (10), a push groove (28) is provided in the annular push ring groove (25), a parking plate (29) is provided in the push groove (28), two cavities (15) of the same size are provided inside the push ring (10), the two cavities (15) are respectively an instantaneous cavity and a counting cavity, moving grooves (16) are symmetrically provided on both sides of the instantaneous cavity and the counting cavity, and elastic springs are installed inside the moving grooves (16). A spring (18), the spring (18) inside the instantaneous cavity and the counting cavity is connected to the first connecting plate (19) and the second connecting plate (23) respectively, the first connecting plate (19) and the second connecting plate (23) are connected to the measuring block (20) and the circle counting block (24) respectively, a power switch (17) and a counter (21) are installed inside the instantaneous cavity and the counting cavity, the measuring block (20) passes through the push groove (28) and cooperates with the teeth (12), and the circle counting block (24) passes through the push groove (28) and cooperates with the counting ball (13); The mode is switched by pushing the push ring (10). The first mode is used to measure the instantaneous torque when the valve is opened. The push ring (10) is pushed, and the push ring (10) drives the measuring block (20) to move to the top of the tooth (12). At this time, the measuring block (20) is pressed against the power switch (17). The device body (1) is energized, and the push ring (10) drives the circle counting block (24) to move to the parking plate (29). At this time, the spring (18) on the circle counting block (24) is in a stretched state, and the spring (18) on the measuring block (20) is also in a stretched state. When the device body (1) is started, the rotation speed of the device body (1) gradually increases until the moment when the device body (1) drives the handwheel rod to rotate through the conversion sleeve (3), the tooth (12) rotates and drives the measuring block (20) to move downward, and the measuring block (20) is separated from the contact with the power switch (17). At this time, the device body (1) is closed, and the instantaneous torque when the valve is opened is determined by observing the torque value on the torque reading display (2). The second mode is used to measure the number of rotations of the handwheel rod. The push ring (10) is pushed in the reverse direction. The push ring (10) drives the measuring block (20) to move onto the parking plate (29). The push ring (10) drives the counting block (24) to move into the annular groove (26). When the device body (1) is started, the counting ball (13) lifts the counting block (24) to contact the counter (21) once every time the rotating shaft (11) rotates one circle. The number of rotations of the handwheel rod is determined by the number of times the counting ball (13) contacts the counter (21).

2. A handheld device for opening a valve under pressure and testing torque according to claim 1, characterized in that: A rotating sleeve (8) is rotatably mounted on the outer wall of the mounting ring (9), a threaded sleeve (7) is rotatably mounted on the bottom of the rotating sleeve (8), the threaded sleeve (7) is threadedly connected to the handle (6), and the threaded sleeve (7) abuts against the outer wall of the mounting ring (9).

3. A handheld device for opening a valve under pressure and testing torque according to claim 2, characterized in that: The handle (6) is provided with an anti-slip platform, which is located inside the rotating sleeve (8) and cooperates with the threaded sleeve (7).

4. A handheld device for opening a valve under pressure and testing torque according to claim 1, characterized in that: The power switch (17) is connected to the device body (1); a display is mounted on the device body (1); and the display is connected to the counter (21).

5. A handheld device for opening a valve under pressure and testing torque according to claim 1, characterized in that: The support plate (30) is threadedly connected to the threaded adjustment column (31); a support frame (32) is provided on the support plate (30); a reinforcing rib is welded at the connection between the support frame (32) and the support plate (30); a matching ring (33) is provided on the support frame (32); the matching ring (33) is slidably mounted with the rotating sleeve (8); a force dissipation groove (22) is provided on the matching ring (33); and the force dissipation groove (22) is matched with the handle (6).

6. A handheld device for opening a valve under pressure and testing torque according to claim 1, characterized in that: A rubber ring (14) is installed on the outer wall of the push ring (10).

7. A handheld device for opening a valve under pressure and testing torque according to claim 1, characterized in that: The side of the tooth (12) close to the rotating shaft (11) is machined with an inclined surface.

Images