Disassembling and assembling tool for vibration probe of steam turbine

Abstract

The utility model discloses a steam turbine vibration probe dismounting tool which comprises a connecting rod, a sleeve is arranged at one end of the connecting rod, the connecting rod is connected with the middle of the outer wall of the sleeve, the axis of the sleeve is perpendicular to the connecting rod, through grooves are formed in the surface of the sleeve in the extending direction of the axis, and the width of the through grooves is not larger than the widest position in the sleeve. Meanwhile, a ratchet wheel structure is further arranged at the joint of the connecting rod and the sleeve, and control is conducted through a springback assembly. According to the dismounting tool, one side of the sleeve is provided with the groove, so that the sleeve can conveniently accommodate a steam turbine vibration probe connected with a cable, the stability of connection between the dismounting tool and the probe is improved, and meanwhile, the ratchet mechanism is arranged, so that the relative position between the connecting rod and the sleeve can be adjusted in the dismounting process; the dismounting tool is suitable for dismounting in a narrow space, and the applicability of the dismounting tool is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steam turbine safety monitoring measuring point dismounting, and relates to a steam turbine vibration probe dismounting tool. BACKGROUND

[0002] At present, large steam turbine generator units are all provided with a steam turbine safety monitoring system TSI, which mainly monitors key parameter data such as vibration, expansion and displacement of the steam turbine in operation. With the increasingly high safety and reliable operation requirements of the generator unit, the measuring points of the steam turbine safety monitoring system TSI must work stably and reliably, so as to collect and transmit real-time accurate data of the steam turbine, for monitoring the state and critical interruption protection.

[0003] As one of the most important measuring points in the steam turbine safety monitoring system, the bearing vibration measuring point must be installed firmly and measured accurately. Each power generation enterprise usually has multiple generator units, and all the probes need to be removed for inspection and verification during unit maintenance. After verification, the probes are reinstalled and debugged according to the standard. In the debugging process, in order to ensure that the probes are installed to the standard voltage value, the vibration probe fixing nut needs to be adjusted constantly, and the vibration probe is disassembled and assembled frequently, which is labor-intensive. At present, the #5 and #6 bearing vibration probes of the steam turbine of some 330MW subcritical units are located in the circular limiting groove of the upper tile block, and the cable connected to the probe extends out of the circular limiting groove, which brings great difficulty to the dismounting operation. There are two existing dismounting methods, one of which is to insert an open wrench into the groove in a direction perpendicular to the limiting groove and rotate the wrench to disassemble, but this method is unstable and prone to loosening, making it difficult to disassemble. The other method is to disconnect the cable from the other end and use a sleeve to disassemble the probe, but this method requires frequent disconnection of the cable, increasing the labor intensity. Furthermore, the inconvenience of dismounting may cause the vibration probe to be not installed firmly and the measurement data to be inaccurate, which poses a hidden danger to the safe operation of the steam turbine.

[0004] Therefore, a dismounting tool needs to be designed to dismount the probe in the limiting groove. UTILITY MODEL CONTENTS

[0005] The utility model discloses a steam turbine vibration probe dismounting tool, which solves the problem of difficult dismounting of the steam turbine bearing vibration probe in the limiting groove caused by the difficulty of clamping the probe with an ordinary wrench.

[0006] The utility model adopts the technical scheme that a sleeve is arranged at one end of a connecting rod, and the sleeve is connected to the outer wall of the connecting rod, the axis of the sleeve is perpendicular to the connecting rod, and a through groove is formed in the surface of the sleeve along the axial direction, and the width of the through groove is not greater than the widest part in the sleeve.

[0007] The utility model has the characteristics that

[0008] The side wall of the sleeve connected with the connecting rod is provided with a sliding groove, a plurality of ratchets are fixedly connected in the sliding groove, the ratchets face the opening side of the sliding groove, a sliding block is arranged in the sliding groove, the sliding block is fixedly connected with the connecting rod, a rebound assembly is arranged in the connecting rod, the rebound assembly is fixedly connected with a locking rod, the locking rod extends in the connecting rod along the axial direction and penetrates through the sliding block to extend into the sliding groove and mesh with the ratchets.

[0009] The rebound assembly comprises a spring fixedly connected to the inner side of the connecting rod, the spring is parallel to the axis of the connecting rod, a tapered limiting groove is formed in the surface of the locking rod in the connecting rod, an unlocking button penetrates through the surface of the connecting rod at the position corresponding to the limiting groove, and one end of the unlocking button extending into the connecting rod extends into the limiting groove.

[0010] The end of the unlocking button extending into the limiting groove is shaped the same as the limiting groove, and the bottom end of the unlocking button is close to the inner wall of the side of the limiting groove close to the spring when the unlocking button is not subjected to external force.

[0011] The spring is in a compressed state when the unlocking button is not pressed.

[0012] The outer wall of the end of the connecting rod away from the sleeve is fixedly connected with an anti-skid rubber.

[0013] The side wall of the sleeve is provided with a positioning hole, the inner wall of the sleeve is provided with a cushion block, a threaded hole is formed in the position of the cushion block corresponding to the positioning hole, and the cushion block is fixed to the inner wall of the sleeve through bolts.

[0014] The positioning hole is a stepped hole, and the inner diameter of the positioning hole at one section of the outer wall of the sleeve is larger than that of other sections.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model discloses a sleeve on one side of the sleeve is grooved, so that the sleeve can accommodate the cable, avoids the cable to influence the connection of the dismounting tool and the probe, and simultaneously the sleeve can extend into the groove and be clamped with the probe, and the connection is more stable and not easy to loosen.

[0017] 2. The utility model discloses a ratchet mechanism is arranged between the sleeve and the connecting rod, so that the relative position between the sleeve and the connecting rod can be adjusted, when the connecting rod rotation space is insufficient during the dismounting work, the position of the connecting rod can be adjusted through the ratchet mechanism, and the sleeve does not need to be frequently loosened during the dismounting operation, and the labor intensity of the dismounting work is reduced.

[0018] 3. The utility model discloses the setting of the spring, the limiting groove and the unlocking button can actively release the meshing state between the locking rod and the ratchet, so that the relative position between the connecting rod and the sleeve can be freely adjusted, the connecting rod moved to the extreme position is conveniently reset, and the next dismounting work is carried out. DRAWINGS

[0019] Figure 1 Figure 1 is a structural schematic diagram of the steam turbine vibration probe dismounting tool of the present application;

[0020] Figure 2 Figure 2 is a top view of the steam turbine vibration probe dismounting tool of the present application;

[0021] Figure 3 Figure 3 is a linking structure diagram of the sleeve and connecting rod in the present application;

[0022] Figure 4 Figure 4 is a sectional view of the connecting rod in the present application;

[0023] Figure 5 Figure 5 is a sectional view of the sleeve in the present application.

[0024] In the figure: 1, connecting rod; 2, sleeve; 3, through slot; 4, sliding slot; 5, ratchet; 6, sliding block; 7, rebound assembly; 8, locking rod; 9, spring; 10, limiting groove; 11, unlocking button; 12, anti-skid rubber; 13, positioning hole; 14, cushion block; 15, threaded hole. DETAILED DESCRIPTION

[0025] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0026] Embodiment one:

[0027] As shown in Figure 1 and Figure 2 , it comprises a connecting rod 1, one end of the connecting rod 1 is provided with a sleeve 2, and the connecting rod 1 is connected with the middle part of the outer wall of the sleeve 2, the axis of the sleeve 2 is perpendicular to the connecting rod 1, and through slots 3 are formed on the surface of the sleeve 2 along the axial extension direction, and the width of the through slots 3 is not greater than the widest part in the sleeve 2.

[0028] When the bolt installed in the groove and connected with the cable at the top is dismounted, the through slots 3 of the present application can pass through the cable, directly clamp the sleeve 2 on the bolt in the groove, and complete the dismounting of the bolt by rotating the sleeve 2 through the connecting rod 1, without dismounting the cable.

[0029] Embodiment two:

[0030] As shown in Figure 1 , Figure 2 and Figure 3 , it comprises a connecting rod 1, one end of the connecting rod 1 is provided with a sleeve 2, and the connecting rod 1 is connected with the middle part of the outer wall of the sleeve 2, the axis of the sleeve 2 is perpendicular to the connecting rod 1, and through slots 3 are formed on the surface of the sleeve 2 along the axial extension direction, and the width of the through slots 3 is not greater than the widest part in the sleeve 2.

[0031] The side wall of the sleeve 2 connected with the connecting rod 1 is provided with a sliding groove 4, a plurality of ratchet teeth 5 are fixedly connected in the sliding groove 4, the ratchet teeth 5 are towards the opening side of the sliding groove 4, a sliding block 6 is arranged in the sliding groove 4, the sliding block 6 is fixedly connected with the connecting rod 1, a rebound assembly 7 is arranged in the connecting rod 1, the rebound assembly 7 is fixedly connected with a locking rod 8, the locking rod 8 extends in the connecting rod 1 along the axial direction, and the locking rod 8 extends through the sliding block 6 and into the sliding groove 4 to be engaged with the ratchet teeth 5.

[0032] The ratchet structure composed of the ratchet teeth 5 and the locking rod 8 enables the sleeve 2 and the connecting rod 1 to rotate in one direction, when the space for disassembly is small and the rotating range of the connecting rod 1 is limited, the connecting rod 1 can rotate on the sleeve 2 by a certain angle to reserve the stroke for the subsequent rotation of the connecting rod 1, and the sleeve does not need to be frequently removed.

[0033] Embodiment three:

[0034] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , it comprises a connecting rod 1, one end of the connecting rod 1 is provided with a sleeve 2, and the connecting rod 1 is connected with the middle part of the outer wall of the sleeve 2, the axis of the sleeve 2 is perpendicular to the connecting rod 1, and the surface of the sleeve 2 is provided with a through groove 3 along the axial extension direction, and the width of the through groove 3 is not greater than the widest part in the sleeve 2.

[0035] The side wall of the sleeve 2 connected with the connecting rod 1 is provided with a sliding groove 4, a plurality of ratchet teeth 5 are fixedly connected in the sliding groove 4, the ratchet teeth 5 are towards the opening side of the sliding groove 4, a sliding block 6 is arranged in the sliding groove 4, the sliding block 6 is fixedly connected with the connecting rod 1, a rebound assembly 7 is arranged in the connecting rod 1, the rebound assembly 7 is fixedly connected with a locking rod 8, the locking rod 8 extends in the connecting rod 1 along the axial direction, and the locking rod 8 extends through the sliding block 6 and into the sliding groove 4 to be engaged with the ratchet teeth 5.

[0036] The rebound assembly 7 comprises a spring 9 fixedly connected to the inner side of the connecting rod 1, and the spring 9 is parallel to the axis of the connecting rod 1, a tapered limiting groove 10 is arranged on the surface of the locking rod 8 in the connecting rod 1, a unlocking button 11 penetrates through the position corresponding to the limiting groove 10 on the surface of the connecting rod 1, and the end of the unlocking button 11 extending into the connecting rod 1 extends into the limiting groove 10.

[0037] The end of the unlocking button 11 extending into the limiting groove 10 is the same shape as the limiting groove 10, and when the unlocking button 11 is not subjected to external force, the bottom end of the unlocking button 11 is tightly attached to the inner wall of the limiting groove 10 close to the spring 9.

[0038] In this device, the sleeve 2 needs to accommodate the cable, so a through groove 3 is provided. Because the ratchet 5 cannot surround the sleeve 2 due to the through groove 3, there is a limit to the adjustment of the relative position between the connecting rod 1 and the sleeve 2. When the connecting rod 1 moves to one end of the slide groove 4 along the inclined direction of the ratchet 5, it cannot continue to move. To solve this problem, a spring-loaded assembly 7 is provided.

[0039] On the one hand, the spring 9 in the spring-return assembly 7 can promptly reset the locking rod 8 by means of elastic force when the locking rod 8 moves in the inclined direction of the ratchet 5, maintaining the meshing state between the locking rod 8 and the ratchet 5. On the other hand, the unlocking button 11 in the spring-return assembly 7 can adjust the position of the locking rod 8 in the connecting rod 1. When the unlocking button 11 is pressed, the bottom end of the unlocking button 11 slides in the limiting groove 10, causing the locking rod 8 to move away from the slide groove 4 along the axial direction of the connecting rod 1, releasing the locking state between the locking rod 8 and the ratchet 5, making it easier to adjust the position of the connecting rod 1.

[0040] Example 4:

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a connecting rod 1, one end of which is provided with a sleeve 2, and the connecting rod 1 is connected to the middle of the outer wall of the sleeve 2. The axis of the sleeve 2 is perpendicular to the connecting rod 1, and the surface of the sleeve 2 is provided with through grooves 3 along the axial extension direction. The width of the through grooves 3 is not greater than the widest part inside the sleeve 2.

[0042] A groove 4 is provided on the side wall of the sleeve 2 that is connected to the connecting rod 1. Several ratchet teeth 5 are fixedly connected in the groove 4, and the ratchet teeth 5 face the opening side of the groove 4. A slider 6 is provided in the groove 4. The slider 6 is fixedly connected to the connecting rod 1. A spring-loaded assembly 7 is provided in the connecting rod 1. A locking rod 8 is fixedly connected to the spring-loaded assembly 7. The locking rod 8 extends axially in the connecting rod 1, passes through the slider 6 and extends into the groove 4 to engage with the ratchet teeth 5.

[0043] The rebound assembly 7 includes a spring 9 fixedly connected to the inside of the connecting rod 1, and the spring 9 is parallel to the axis of the connecting rod 1. The locking rod 8 has a tapered limiting groove 10 on a section of its surface inside the connecting rod 1. An unlocking button 11 passes through the surface of the connecting rod 1 at a position corresponding to the limiting groove 10. One end of the unlocking button 11 extends into the limiting groove 10.

[0044] The end of the unlock button 11 that extends into the limiting groove 10 has the same shape as the limiting groove 10, and when the unlock button 11 is not subjected to external force, the bottom end of the unlock button 11 is in close contact with the inner wall of the limiting groove 10 near the spring 9.

[0045] When the unlock button 11 is not pressed, the spring 9 is in a compressed state.

[0046] The spring 9 is always in a compressed state, which can always provide clamping force to the locking lever 8 and keep the locking lever 8 engaged with the ratchet 5. Furthermore, the compressed spring 9 requires a large force to be further compressed, which can prevent the operator from accidentally touching the unlock button 11 and causing the lock to unlock.

[0047] Example 5:

[0048] like Figure 1 , Figure 2 and Figure 4 As shown, it includes a connecting rod 1, one end of which is provided with a sleeve 2, and the connecting rod 1 is connected to the middle of the outer wall of the sleeve 2. The axis of the sleeve 2 is perpendicular to the connecting rod 1, and the surface of the sleeve 2 is provided with through grooves 3 along the axial extension direction. The width of the through grooves 3 is not greater than the widest part inside the sleeve 2.

[0049] The outer wall of the end of the connecting rod 1 away from the sleeve 2 is fixedly connected with anti-slip rubber 12.

[0050] The anti-slip rubber 12 increases the friction between the hand and the connecting rod 1, effectively preventing the connecting rod 1 from slipping out of the hand and improving the stability and safety of operation. At the same time, the rubber material itself can deform, effectively dispersing the pressure generated by the hand when holding the wrench, making the pressure more evenly distributed in all parts of the hand, avoiding discomfort and pain caused by excessive local pressure, and further improving the comfort of use.

[0051] Example 6:

[0052] like Figure 1 , Figure 2 and Figure 5 As shown, it includes a connecting rod 1, one end of which is provided with a sleeve 2, and the connecting rod 1 is connected to the middle of the outer wall of the sleeve 2. The axis of the sleeve 2 is perpendicular to the connecting rod 1, and the surface of the sleeve 2 is provided with through grooves 3 along the axial extension direction. The width of the through grooves 3 is not greater than the widest part inside the sleeve 2.

[0053] The sleeve 2 has a positioning hole 13 on its side wall and a pad 14 on its inner wall. The pad 14 has a threaded hole 15 at the position corresponding to the positioning hole 13. The pad 14 is fixed to the inner wall of the sleeve 2 by bolts.

[0054] Positioning hole 13 is a stepped hole, and the inner diameter of a section of positioning hole 13 on the outer wall of sleeve 2 is larger than that of other sections.

[0055] The inner diameter of the sleeve 2 can be changed by setting the spacer 14 to accommodate bolts of different sizes. The positioning hole 13 is a stepped hole, which can accommodate the head of the bolt and prevent the bolt on the outer wall of the sleeve 2 from forming a protrusion when the spacer 14 is installed inside the sleeve 2, so as to avoid interference with the inner wall of the groove where the bolt to be removed is located.

[0056] How to use:

[0057] When disassembling the probe in the recess, first, sleeve 2 is sleeved outside the cable through through slot 3, and then moved into the recess, so that sleeve 2 is clamped outside the probe, and the direction of ratchet 5 is opposite to the option of the probe.

[0058] After the fixation of sleeve 2 is completed, connecting rod 1 is rotated around sleeve 2 as the center, so as to drive the rotation of the probe.

[0059] After rotating for a certain angle, when the rotation space of connecting rod 1 is insufficient, connecting rod 1 can be reversely rotated in the disassembly direction to adjust the relative position of connecting rod 1 and sleeve 2, and the disassembly work is continued until the probe is taken out from the recess.

[0060] When connecting rod 1 moves to one end of sliding slot 4 in the inclined direction of ratchet 5 and cannot continue to move, unlocking button 11 is pressed to make locking rod 8 disengage from ratchet 5, at this time, the rotation between connecting rod 1 and sleeve 2 is not limited, and connecting rod 1 can be reset for the next disassembly work.

[0061] When the probe is installed, the other end of sleeve 2 can be used to clamp the probe, at this time, the inclined direction of ratchet 5 is opposite to the rotation direction of the probe, and the installation work of the probe can be carried out.

[0062] When disassembling probes of different sizes, first, pad 14 is slid into sleeve 2, and threaded hole 15 is aligned with positioning hole 13, then bolt is screwed into threaded hole 15 to fix pad 14 in sleeve 2, and different thicknesses of pad 14 are replaced to adapt to probes of different sizes.

Claims

1. A tool for disassembling and assembling a turbine vibration probe, characterized in that, Includes a connecting rod (1), one end of which is provided with a sleeve (2), and the connecting rod (1) is connected to the middle of the outer wall of the sleeve (2). The axis of the sleeve (2) is perpendicular to the connecting rod (1). The surface of the sleeve (2) is provided with through grooves (3) along the axial extension direction. The width of the through grooves (3) is not greater than the widest part inside the sleeve (2).

2. The turbine vibration probe disassembly and assembly tool according to claim 1, characterized in that, The sleeve (2) is provided with a groove (4) on the side wall connected to the connecting rod (1). Several ratchet teeth (5) are fixedly connected in the groove (4), and the ratchet teeth (5) face the opening side of the groove (4). A slider (6) is provided in the groove (4). The slider (6) is fixedly connected to the connecting rod (1). A spring-loaded assembly (7) is provided in the connecting rod (1). A locking rod (8) is fixedly connected to the spring-loaded assembly (7). The locking rod (8) extends axially in the connecting rod (1) and penetrates the slider (6) into the groove (4) to engage with the ratchet teeth (5).

3. The turbine vibration probe disassembly and assembly tool according to claim 2, characterized in that, The rebound assembly (7) includes a spring (9) fixedly connected to the inside of the connecting rod (1), and the spring (9) is parallel to the axis of the connecting rod (1). The locking rod (8) has a conical limiting groove (10) on a section of the surface inside the connecting rod (1). An unlocking button (11) is inserted through the surface of the connecting rod (1) at the position corresponding to the limiting groove (10). One end of the unlocking button (11) extends into the limiting groove (10).

4. The turbine vibration probe disassembly and assembly tool according to claim 3, characterized in that, The shape of one end of the unlock button (11) that extends into the limiting groove (10) is the same as that of the limiting groove (10), and when the unlock button (11) is not subjected to external force, the bottom end of the unlock button (11) is close to the inner wall of the limiting groove (10) near the spring (9).

5. The turbine vibration probe disassembly and assembly tool according to claim 3, characterized in that, When the unlock button (11) is not pressed, the spring (9) is in a compressed state.

6. The turbine vibration probe disassembly and assembly tool according to claim 1, characterized in that, The outer wall of the end of the connecting rod (1) away from the sleeve (2) is fixedly connected with anti-slip rubber (12).

7. The turbine vibration probe disassembly and assembly tool according to claim 1, characterized in that, The sleeve (2) has a positioning hole (13) on its side wall and a pad (14) on its inner wall. The pad (14) has a threaded hole (15) at the position corresponding to the positioning hole (13). The pad (14) is fixed to the inner wall of the sleeve (2) by bolts.

8. The turbine vibration probe disassembly and assembly tool according to claim 7, characterized in that, The positioning hole (13) is a stepped hole, and the inner diameter of the section of the positioning hole (13) on the outer wall of the sleeve (2) is larger than that of the other sections.

Images