Dismounting tool for first-stage moving blade of gas compressor

Abstract

The invention relates to the technical field of moving blade dismounting, in particular to a gas compressor first-stage moving blade dismounting tool which comprises a guide rail, a rammer and a clamp. The clamp is adopted to stably clamp the roots of the moving blades of the gas turbine rotor, the handles on the two sides of the rammer are manually grabbed, the round impact block near the top end is impacted along the guide rail, inertia force of the rammer is transmitted to the moving blades stably clamped by the clamp through the guide rail, and the moving blades finally fall off from a rotor wheel disc after receiving stable axial lifting force. And meanwhile, a buffer piece is arranged in the rammer and has unidirectivity, the inertia force of the rammer is not affected when the rammer impacts upwards, the rammer falls slowly when falling, and the loose blades are prevented from being hammered into the wheel disc again.

Description

Technical Field

[0001] The invention relates to the technical field of moving blade disassembly, in particular to a tool for disassembling a first-stage moving blade of a compressor. Background Art

[0002] With the rapid development of my country's economy, the domestic people's production and life activities are increasingly dependent on electricity. Gas turbine power generation is the main means of peak load regulation in my country's power grid. The stable operation of gas turbine equipment is of great significance to people's production and life.

[0003] At present, there are a large number of 9E gas turbines installed in China. The dismantling of the first-stage moving blades of the compressor relies on manpower, which is difficult and inefficient, and easily leads to blade damage. Therefore, solving the problem of the dismantling process of the first-stage moving blades of the 9E gas turbine compressor and shortening the maintenance cycle of the 9E gas turbine compressor and ensuring the safety of components have become important requirements for the maintenance of 9E gas turbine compressors in the new era. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the 9E gas turbine compressor has a long disassembly cycle and damages the blade components.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a compressor first-stage moving blade disassembly tool, comprising a guide rail; a hammer slidably arranged on the outside of the guide rail; and a clamp arranged below the guide rail and detachably connected to the guide rail.

[0007] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, the guide rail is provided with a lifting ring, an impact block, and a bearing plate, the bearing plate is arranged in the middle of the guide rail, the impact block is arranged at the upper end of the guide rail, and the lifting ring is arranged at the upper end of the impact block.

[0008] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, the clamp includes a fixed clamp, a movable clamp, a pin shaft, and a bolt. The fixed clamp is arranged below the guide rail and is hinged to the movable clamp through the pin shaft. The bolt is arranged on the fixed clamp and the movable clamp at one end away from the pin shaft.

[0009] As a preferred solution of the compressor first stage moving blade disassembly tool described in the present invention, rubber pads are provided on the inner sides of the fixed clamping plate and the movable clamping plate.

[0010] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, the hammer includes a shell, a buffer member, and a handle, the buffer member is arranged inside the shell, and the handle is arranged outside the shell.

[0011] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, the shell is provided with a straight groove, an upper arc groove, a lower arc groove, a ring plate, a radial groove, and an annular groove; the annular groove is arranged in the shell, the straight groove is arranged on the side wall of the shell, the upper arc groove passes through the upper end surface of the shell, the lower arc groove passes through the lower end surface of the shell, the ring plate is arranged at the lower end of the shell, and the radial groove is arranged on the inner side wall of the shell and is connected with the annular groove.

[0012] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, wherein: a deceleration ring is arranged in the middle of the guide rail, and the outer diameter of the deceleration ring matches the inner wall of the shell; the buffer component includes a buffer block, a driving cylinder, and a trigger rod, the buffer block is slidably matched with the radial groove, and the driving cylinder is rotatably matched with the annular groove; the trigger rod is divided into an upper rod and a lower rod, the upper rod is arranged above the driving cylinder, and is slidably matched with the upper arc groove, and the lower rod is arranged below the driving cylinder, and is slidably matched with the lower arc groove.

[0013] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, the driving cylinder is provided with a spiral groove, an inclined groove, an upper rod groove, and a lower rod groove, the spiral groove is provided on the side wall of the driving cylinder, the inclined groove is provided at the lower end of the driving cylinder, the upper rod groove is provided at the upper end of the driving cylinder, and its end is connected with the upper end of the spiral groove, the upper rod is slidably matched with the upper rod groove, the lower rod groove is provided at the lower end of the driving cylinder, and one end thereof is connected with the lower end of the spiral groove, and the lower rod is slidably matched with the lower rod groove.

[0014] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, the buffer block is also provided with a telescopic block, a first spring, and a connecting rod. The telescopic block is slidably matched with the buffer block. The first spring is arranged between the telescopic block and the end face of the buffer block. The connecting rod is arranged above the buffer block and slidably matched with the inclined groove.

[0015] As a preferred solution of the compressor first-stage moving blade disassembly tool described in the present invention, wherein: the handle is provided with a link, a second spring, a sleeve, and a locking block, the link is provided below the handle, the second spring is provided between the link and the end face of the ring plate, the sleeve is provided on the side wall of the link, and slidingly cooperates with the straight groove and the spiral groove, and the locking block slides with the sleeve; the locking block is provided with an inclined surface and a third spring, the inclined surface is provided on both sides of one end of the locking block, and the third spring is provided between the locking block and the end face of the sleeve.

[0016] The beneficial effects of the present invention are as follows: the present invention adopts a clamp to stably clamp the root of the moving blade of the gas turbine rotor, and manually grasps the handles on both sides of the hammer to hit the circular impact block near the top along the guide rail, and the inertia force of the hammer is transmitted to the moving blade stably clamped by the clamp through the guide rail. The moving blade receives a stable axial upward force and eventually falls off the rotor disc. At the same time, a buffer is provided in the hammer, and the buffer is unidirectional. When the hammer hits upward, its inertia force is not affected, and when it falls, it falls slowly to avoid hammering the loose blade into the disc again. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0018] Figure 1 This is a scene diagram of the compressor first-stage moving blade removal tool.

[0019] Figure 2 This is the structural diagram of the compressor first stage moving blade removal tool.

[0020] Figure 3 This is an elevation view of the guide rail and hammer of the compressor first-stage moving blade removal tool.

[0021] Figure 4 This is an exploded view of the inside of the ram of the compressor first-stage blade removal tool.

[0022] Figure 5 This is a side view of the drive cylinder of the compressor first-stage moving blade removal tool.

[0023] Figure 6 This is the bottom view of the drive cylinder of the compressor first stage moving blade removal tool.

[0024] Figure 7 This is a cross-sectional view of the hammer of the compressor first-stage moving blade removal tool.

[0025] Figure 8 This is a cross-sectional view from another angle of the hammer of the compressor first stage moving blade removal tool. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a compressor first stage moving blade disassembly tool, and the compressor first stage moving blade disassembly tool includes a guide rail 100, a hammer 200 and a clamp 300.

[0031] Specifically, the hammer 200 is slidably disposed on the outside of the guide rail 100 ; the clamp 300 is disposed below the guide rail 100 and is detachably connected to the guide rail 100 .

[0032] Specifically, the guide rail 100 is provided with a lifting ring 101, a striking block 102, and a bearing plate 103, wherein the bearing plate 103 is provided at the middle of the guide rail 100, the striking block 102 is provided at the upper end of the guide rail 100, and the lifting ring 101 is provided at the upper end of the striking block 102;

[0033] The lifting ring 101 is threadedly connected to the top of the guide rail 100 , and the lifting ring 101 is used in conjunction with an external chain hoist. The bearing plate 103 is used to place the hammer 200 , and the clamp 300 is threadedly connected to the bottom of the guide rail 200 .

[0034] Specifically, the clamp 300 includes a fixed clamp 301, a movable clamp 302, a pin 303, and a bolt 304. The fixed clamp 301 is arranged below the guide rail 100 and is hinged to the movable clamp 302 through the pin 303. The bolt 304 is arranged on one end of the fixed clamp 301 and the movable clamp 302 away from the pin 303.

[0035] Specifically, rubber pads 305 are provided on the inner sides of the fixed clamp 301 and the movable clamp 302; the rubber pads 305 use hard rubber as a clamp protection layer to prevent the blade from directly hitting the clamp body and causing damage. At the same time, the hard rubber can reduce the buffering effect of the impact force of the hammer, making the force transmission more efficient.

[0036] When in use, the lifting ring 101 is pulled up by a high chain hoist to keep the device in a vertical state, the bolt 304 is removed to open the clamp 300, clamp the root of the first-stage moving blade of the 9E gas turbine compressor, and the bolt 304 is tightened to make the hard rubber 305 arranged on the inner side of the clamp 300 close to the root of the first-stage moving blade of the 9E gas turbine compressor; grab the hammer 200 and accelerate it along the guide rail 100 to collide with the circular impact block 102 upward. When the blade moves upward, tighten the chain hoist so that the tool always provides an upward lifting force to the root of the first-stage moving blade of the 9E gas turbine compressor, and perform reciprocating motion until the first-stage moving blade of the 9E gas turbine compressor falls off.

[0037] Example 2

[0038] Reference Figures 3 to 8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0039] Specifically, the hammer 200 includes a housing 201, a buffer 202, and a handle 203. The buffer 202 is disposed inside the housing 201, and the handle 203 is disposed outside the housing 201.

[0040] The buffer 202 allows the hammer 200 to fall slowly after hitting the impact block 102, avoiding the hammer 200 from hitting the support plate 103 and resetting the loose blades after it is reset under the action of gravity. The handle 203 is convenient for pulling the hammer 200, and during the rising process of the hammer 200, the handle 203 can make the buffer 202 ineffective during this process, avoiding power loss when accelerating upward.

[0041] Specifically, the housing 201 is provided with a straight groove 201a, an upper arc groove 201b, a lower arc groove 201c, a ring plate 201d, a radial groove 201e, and an annular groove 201f. The annular groove 201f is provided in the housing 201. The straight groove 201a is provided on the side wall of the housing 201. The arc groove 201b penetrates the upper end surface of the housing 201. The lower arc groove 201c penetrates the lower end surface of the housing 201. The ring plate 201d is provided at the lower end of the housing 201. The radial groove 201e is provided on the inner side wall of the housing 201 and is connected with the annular groove 201f.

[0042] Specifically, a deceleration ring 104 is provided in the middle of the guide rail 100, and the outer diameter of the deceleration ring 104 matches the inner wall of the housing 201; the buffer member 202 includes a buffer block 204, a driving cylinder 205, and a trigger rod 206, the buffer block 204 is slidably matched with the radial groove 201e, and the driving cylinder 205 is rotationally matched with the annular groove 201f; the trigger rod 206 is divided into an upper rod 206a and a lower rod 206b, the upper rod 206a is provided above the driving cylinder 205, and is slidably matched with the upper arc groove 201b, and the lower rod 206b is provided below the driving cylinder 205, and is slidably matched with the lower arc groove 201c;

[0043] During the falling process of the hammer 200, the buffer block 204 will continuously contact the deceleration ring 104 to achieve a deceleration effect. The driving cylinder 205 can drive the buffer block 204 not to contact the deceleration ring 104 when the hammer 200 rises.

[0044] Specifically, the driving cylinder 205 is provided with a spiral groove 205a, an inclined groove 205b, an upper rod groove 205c, and a lower rod groove 205d. The spiral groove 205a is provided on the side wall of the driving cylinder 205, the inclined groove 205b is provided on the lower end of the driving cylinder 205, the upper rod groove 205c is provided on the upper end of the driving cylinder 205, and its end is connected with the upper end of the spiral groove 205a, the upper rod 206a is slidably matched with the upper rod groove 205c, the lower rod groove 205d is provided on the lower end of the driving cylinder 205, and one end thereof is connected with the lower end of the spiral groove 205a, and the lower rod 206b is slidably matched with the lower rod groove 205d;

[0045] It is worth noting that the line connecting the two ends of the inclined groove 205b does not pass through the center of the circle, and the distances between the two ends of the inclined groove 205b and the center of the circle are not equal.

[0046] Specifically, the buffer block 204 is further provided with a telescopic block 204a, a first spring 204b, and a connecting rod 204c. The telescopic block 204a is slidably matched with the buffer block 204. The first spring 204b is arranged between the telescopic block 204a and the end surface of the buffer block 204. The connecting rod 204c is arranged above the buffer block 204 and slidably matched with the inclined groove 205b.

[0047] In the initial state, the first spring 204 b is at its original length, the connecting rod 204 c is located at one end of the inclined slot 205 b close to the axis, and the telescopic block 204 a is located in the gap of the speed reduction ring 104 .

[0048] Specifically, the handle 203 is provided with a link 203a, a second spring 203b, a sleeve 203c, and a locking block 203d. The link 203a is provided below the handle 203, the second spring 203b is provided between the link 203a and the end surface of the ring plate 201d, the sleeve 203c is provided on the side wall of the link 203a, and is slidably matched with the straight groove 201a and the spiral groove 205a, and the locking block 203d is slidably matched with the sleeve 203c; the locking block 203d is provided with an inclined surface 203e and a third spring 203f, the inclined surface 203e is provided on both sides of one end of the locking block 203d, and the third spring 203f is provided between the locking block 203d and the end surface of the sleeve 203c;

[0049] In the initial state, the hammer 200 is located on the bearing plate 103, the second spring 203b is at its original length, the sleeve 203c is located at the lower ends of the spiral groove 205a and the straight groove 201a, and the sleeve 203c is located at the intersection of the spiral groove 205a and the lower rod groove 205d. Due to the squeezing of the bearing plate 103, the lower rod 206b is completely located in the lower rod groove 205d, covering the lower rod groove 205d part in the spiral groove 205a. Therefore, the locking block 203d will not extend into the rod groove 205d at this time, and the third spring 203f is in a compressed state. When it is necessary to accelerate the hammer 200 to collide upward, the handle 203 needs to be pulled. The amount of movement is large. When pulling, the handle 203 moves upward first, and the sleeve 203c cooperates with the spiral groove 205a to drive the driving cylinder 205 to rotate, so that the connecting rod 203c moves to the end of the inclined groove 205b away from the center of the circle, and the telescopic block 204a is separated from the deceleration ring 104 and is completely in the radial groove 101e. When the handle 203 moves above the spiral groove 205c, under the action of the third spring 203f, the locking block 203d extends into the upper rod groove 205c, and the inclined surface 203e squeezes the upper rod 206a to make it extend to the upper surface of the shell 201. At this time, the handle 203 is fixed to the driving cylinder 205, and the handle 203 is continuously pulled upward to drive the collision The hammer 200 collides upward with the impact block 102. When the collision occurs, the impact block 102 will squeeze the upper rod 206a to reset it, so that the upper rod 206a squeezes the inclined surface 203e, presses the locking block 203d into the sleeve 203c, and under the action of the second spring 203b, the handle 203 is reset and drives the drive cylinder 205 to rotate (it is worth noting that the weight of the hammer is mainly concentrated on the shell 201, so the second spring 203b can drive the drive cylinder 205 to rotate when resetting), so that the telescopic block 204a moves back to the outside of the radial groove 201e, and continuously contacts the deceleration ring 104 under the action of the first spring 204b (it is worth noting that A slope is provided at the end of the telescopic block 204a. During this process, the sleeve 203d is located at the lower end of the spiral groove 205a, and the locking block 203d extends into the lower rod groove 205d, squeezing the lower rod 206b to the lower end surface of the shell 201. At this time, the driving cylinder 205 is fixed. Therefore, when the deceleration ring 104 contacts the telescopic block 204a, the buffer block 204 will not move into the radial groove 201e, resulting in buffer failure. After the hammer 200 falls to the supporting plate 103, the supporting plate 103 squeezes the lower rod 206b to reset the lower rod 206b, and the locking block 203d is located in the base lower rod groove 205d. At this time, the handle 203 and the driving cylinder 205 are unlocked again.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A compressor first stage moving blade disassembly tool, characterized in that: include, Guide rail (100); A striker (200) is slidably disposed outside the guide rail (100); The clamp (300) is arranged below the guide rail (100) and is detachably connected to the guide rail (100).

2. The compressor first stage moving blade removal tool according to claim 1, characterized in that: The guide rail (100) is provided with a lifting ring (101), a collision block (102), and a bearing plate (103); the bearing plate (103) is arranged at the middle part of the guide rail (100); the collision block (102) is arranged at the upper end of the guide rail (100); and the lifting ring (101) is arranged at the upper end of the collision block (102).

3. The compressor first stage moving blade removal tool according to claim 2, characterized in that: The clamp (300) comprises a fixed clamp (301), a movable clamp (302), a pin (303), and a bolt (304); the fixed clamp (301) is arranged below the guide rail (100) and is hinged to the movable clamp (302) via the pin (303); the bolt (304) is arranged on one end of the fixed clamp (301) and the movable clamp (302) away from the pin (303).

4. The compressor first stage moving blade removal tool according to claim 3, characterized in that: Rubber pads (305) are provided on the inner sides of the fixed clamping plate (301) and the movable clamping plate (302).

5. The compressor first stage moving blade removal tool according to claim 4, characterized in that: The hammer (200) comprises a shell (201), a buffer (202), and a handle (203); the buffer (202) is arranged inside the shell (201), and the handle (203) is arranged outside the shell (201).

6. The compressor first stage moving blade removal tool according to claim 5, characterized in that: The shell (201) is provided with a straight groove (201a), an upper arc groove (201b), a lower arc groove (201c), a ring plate (201d), a radial groove (201e), and an annular groove (201f); the annular groove (201f) is arranged in the shell (201); the straight groove (201a) is arranged on the side wall of the shell (201); the upper arc groove (201b) passes through the upper end surface of the shell (201); the lower arc groove (201c) passes through the lower end surface of the shell (201); the ring plate (201d) is arranged at the lower end of the shell (201); and the radial groove (201e) is arranged on the inner side wall of the shell (201) and is connected to the annular groove (201f).

7. The compressor first stage moving blade removal tool according to claim 6, characterized in that: A deceleration ring (104) is provided in the middle of the guide rail (100), and the outer diameter of the deceleration ring (104) matches the inner wall of the housing (201); The buffer member (202) comprises a buffer block (204), a drive cylinder (205), and a trigger rod (206); the buffer block (204) is slidably matched with the radial groove (201e), and the drive cylinder (205) is rotationally matched with the annular groove (201f); The trigger rod (206) is divided into an upper rod (206a) and a lower rod (206b), wherein the upper rod (206a) is arranged above the driving cylinder (205) and is slidably matched with the upper arc groove (201b), and the lower rod (206b) is arranged below the driving cylinder (205) and is slidably matched with the lower arc groove (201c).

8. The compressor first stage moving blade removal tool according to claim 7, characterized in that: The driving cylinder (205) is provided with a spiral groove (205a), an inclined groove (205b), an upper rod groove (205c), and a lower rod groove (205d); the spiral groove (205a) is provided on the side wall of the driving cylinder (205); the inclined groove (205b) is provided at the lower end of the driving cylinder (205); the upper rod groove (205c) is provided at the upper end of the driving cylinder (205), and its end is connected with the upper end of the spiral groove (205a); the upper rod (206a) is slidably matched with the upper rod groove (205c); the lower rod groove (205d) is provided at the lower end of the driving cylinder (205), and one end of the upper rod groove is connected with the lower end of the spiral groove (205a); and the lower rod (206b) is slidably matched with the lower rod groove (205d).

9. The compressor first stage moving blade removal tool according to claim 8, characterized in that: The buffer block (204) is also provided with a telescopic block (204a), a first spring (204b), and a connecting rod (204c); the telescopic block (204a) is slidably matched with the buffer block (204); the first spring (204b) is arranged between the telescopic block (204a) and the end surface of the buffer block (204); the connecting rod (204c) is arranged above the buffer block (204) and is slidably matched with the inclined groove (205b).

10. The compressor first stage moving blade removal tool according to claim 9, characterized in that: The handle (203) is provided with a link (203a), a second spring (203b), a sleeve (203c), and a locking block (203d); the link (203a) is provided below the handle (203); the second spring (203b) is provided between the link (203a) and the end surface of the ring plate (201d); the sleeve (203c) is provided on the side wall of the link (203a) and is slidably matched with the straight groove (201a) and the spiral groove (205a); and the locking block (203d) is slidably matched with the sleeve (203c); The locking block (203d) is provided with an inclined surface (203e) and a third spring (203f); the inclined surface (203e) is provided on both sides of one end of the locking block (203d); and the third spring (203f) is provided between the locking block (203d) and an end surface of the sleeve (203c).

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