Disassembling and assembling tool for balancing weight of steam turbine rotor

Abstract

The embodiment of the utility model relates to a steam turbine rotor balancing weight disassembling and assembling tool, and belongs to the technical field of steam turbine disassembling, assembling and fixing. The steam turbine rotor balancing weight disassembling and assembling tool comprises a sleeve, the sleeve is of a hollow structure with one end open and the other end provided with a boss, a through hole is formed in the boss, a balancing weight pull rod is arranged in the sleeve in the length direction of the sleeve, and one end of the balancing weight pull rod extends out of the boss through the through hole; the other end of the balancing weight pull rod extends out of the sleeve through the opening; wherein an end cover is arranged at the open end of the sleeve, a through hole is formed in the end cover, balancing weight block clamping pins are arranged on the end cover and located on the two sides of the through hole, the balancing weight pull rod extends out of the end cover through the through hole, and the balancing weight pull rod is located between the two balancing weight block clamping pins; the outer wall face of the boss is sleeved with a spring. According to the disassembling and assembling tool for the balancing weight of the steam turbine rotor, the balancing weight of the steam turbine rotor can be quickly and conveniently disassembled and assembled.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of steam turbine disassembly and assembly, and in particular to a steam turbine rotor counterweight disassembly and assembly tool. Background Art

[0002] The steam turbine body is one of the three major main engines of a thermal power unit. The stable operation of the steam turbine unit directly affects the efficiency and reliability of the entire system. The smaller the vibration value generated by the rotor when the shaft center is qualified, the higher the reliability of the stable operation of the steam turbine. However, in the rotor manufacturing process, due to the inevitable uneven material distribution, rotor processing and assembly errors, and long-term operation under complex working conditions, the rotor mass distribution changes, etc., the centrifugal force of each tiny particle of the rotor cannot be balanced and offset during rotation. Therefore, it is necessary to add balancing blocks at appropriate positions of the rotor to make the mass distribution uniform, so as to eliminate the unbalanced centrifugal force and reduce vibration. Utility Model Content

[0003] In view of this, an embodiment of the present application provides a steam turbine rotor counterweight disassembly and assembly tool, which can quickly and conveniently disassemble and assemble the steam turbine rotor counterweight to solve the technical problems raised by the background technology.

[0004] The embodiment of the present application provides a steam turbine rotor counterweight disassembly and assembly tool, comprising a sleeve, wherein the sleeve is a hollow structure with an opening at one end and a boss at the other end, wherein a through hole is provided on the boss, and a counterweight pull rod is provided inside the sleeve along its length direction, wherein one end of the counterweight pull rod extends to the outside of the boss through the through hole, and the other end of the counterweight pull rod extends to the outside of the sleeve through the opening;

[0005] Among them, an end cover is provided at one end of the sleeve opening, a through hole is provided on the end cover, counterweight block pins are provided on the end cover and on both sides of the through hole, the counterweight block pull rod extends to the outside of the end cover through the through hole, and the counterweight block pull rod is located between the two counterweight block pins; the outer wall surface of the boss is sleeved with a spring.

[0006] Because most steam turbine rotors are undergoing dynamic balancing, the rotation of the rotors is done by parameterized steam. In order to avoid uneven heating of the rotors for a long time, resulting in stress concentration and bending of the rotors, the time for disassembling and assembling the weight blocks must be as short as possible. The steam turbine rotor weight disassembly and assembly tool in the embodiment of the present application greatly reduces the working time, is more easily adapted to various complex working conditions, and also ensures the safety of personnel and equipment to a greater extent.

[0007] In some embodiments that may include the above-mentioned embodiments, the counterweight pull rod is an overall "T"-shaped structure, which includes a vertical rod and a horizontal rod. The vertical rod is arranged in the sleeve and along the length direction of the sleeve, and one end of the vertical rod extends outside the boss and is connected to the horizontal rod.

[0008] In some embodiments that may include the above embodiments, an external thread is provided on the outer wall surface of one end of the vertical rod away from the horizontal rod, a screw hole matching the external thread is provided on the counterweight block, and the counterweight block pull rod is threadedly connected to the counterweight block.

[0009] In some embodiments that may include the above embodiments, the counterweight block is provided with a latch groove whose shape and size are matched with the counterweight block latch, and the latch groove is used to latch the counterweight block latch.

[0010] In some embodiments that may include the above-mentioned embodiments, the shape and size of the end cover are adapted to the sleeve, and an internal thread is provided at one end of the end cover away from the counterweight block pin, and an external thread adapted to the internal thread is provided at one end of the sleeve away from the boss, and the end cover and the sleeve are threadedly connected.

[0011] In some embodiments that may include the above embodiments, a handle is provided on the outer wall of one end of the sleeve close to the boss.

[0012] In some embodiments, which may include the above embodiments, the length of the sleeve is 500 mm and the diameter of the sleeve is 20 mm.

[0013] In some embodiments that may include the above embodiments, the diameter of the boss is 12 mm, the height of the boss is 10 mm, and the diameter of the through hole on the boss is 10 mm.

[0014] In some embodiments, which may include the above embodiments, the length of the counterweight pull rod is 550 mm.

[0015] In some embodiments that may include the above embodiments, the diameter of the through hole on the end cover is 10 mm; the height of the counterweight block pin on the end cover is 8 mm.

[0016] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0017] 1. The steam turbine rotor counterweight disassembly and assembly tool in the embodiment of the present application is easy to operate and can be easily operated under various conditions; it is simple to assemble and can be quickly assembled using a simple assembly method; it is also safe and reliable, stable and not loose during use, and will not cause damage to personnel and equipment during operation;

[0018] 2. The steam turbine rotor counterweight disassembly and assembly tool in the embodiment of the present application has a simple structure and is easy to operate. It has the advantages of simple structure, reliable installation, convenient operation, easy maintenance, and low failure rate while achieving the expected function.

[0019] 3. The steam turbine rotor counterweight disassembly and assembly tool in the embodiment of the present application has a wide range of applications and strong adaptability, and a simple assembly method. Through the reasonable selection of accessories and assembly into tools of the required size, it can adapt to various types of counterweight disassembly and assembly work, reduce the time cost required for the work, and avoid the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a steam turbine rotor counterweight disassembly and assembly tool according to an embodiment of the present application;

[0022] Figure 2 The structure of the end cover of the steam turbine rotor counterweight disassembly and assembly tool of the embodiment of the present application is schematically shown. Figure 1 ;

[0023] Figure 3 The structure of the end cover of the steam turbine rotor counterweight disassembly and assembly tool of the embodiment of the present application is schematically shown. Figure 2 .

[0024] Description of reference numerals:

[0025] 1. Sleeve; 2. Counterweight pull rod; 3. End cover; 4. Perforation; 5. Counterweight latch; 6. Spring; 7. Handle. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0028] Secondly, it should be noted that in the description of the present application, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0029] like Figure 1-3 As shown, an embodiment of the present application provides a turbine rotor counterweight disassembly and assembly tool, which is mainly used for the work of finding dynamic balance and disassembling counterweights on-site for various types of steam turbines. The turbine rotor counterweight disassembly and assembly tool includes a sleeve 1, which is a hollow structure with an opening at one end and a boss at the other end, a through hole is provided on the boss, and a spring 6 is sleeved on the outer wall of the boss; a counterweight rod 2 is provided in the sleeve 1 along its length direction, one end of the counterweight rod 2 extends to the outside of the boss through the through hole, and the other end of the counterweight rod 2 extends to the outside of the sleeve 1 through the opening; wherein, an end cover 3 is provided at the open end of the sleeve 1, a through hole 4 is provided on the end cover 3, counterweight pins 5 are provided on the end cover 3 and on both sides of the through hole 4, the counterweight rod 2 extends to the outside of the end cover 3 through the through hole 4, and the counterweight rod 2 is located between the two counterweight pins 5.

[0030] The steam turbine rotor counterweight disassembly and assembly tool in the embodiment of the present application is mainly matched with accessories according to the size of the counterweight and the depth of the counterweight installation hole. Since the steam turbine rotor counterweight disassembly and assembly tool is small in size and requires a certain wear resistance and toughness, carbon tool steel is used as the manufacturing material throughout.

[0031] For example, the length of the sleeve 1 is 500 mm and the diameter is 20 mm. The diameter of the boss is 12 mm and the height is 10 mm; the setting of the boss facilitates the fixing of the spring 6. For example, the diameter of the through hole on the boss is 10 mm, and the setting of the through hole allows the counterweight pull rod 2 to pass through the sleeve 1 to form the tail.

[0032] In a specific embodiment, the counterweight pull rod 2 is an overall "T"-shaped structure, which includes a vertical rod and a horizontal rod. The length of the vertical rod is preferably 550 mm, and the vertical rod is arranged in the sleeve 1 and along the length direction of the sleeve 1. One end of the vertical rod extends outside the boss and is connected to the horizontal rod, which can clamp the spring 6 and rotate the counterweight pull rod 2.

[0033] Exemplarily, an external thread is provided on the outer wall surface of one end of the vertical rod away from the horizontal rod, a screw hole matching the external thread is provided on the counterweight block, and the counterweight block pull rod 2 is threadedly connected to the counterweight block.

[0034] Specifically, the counterweight block is provided with a latching groove whose shape and size are matched with the counterweight block latching pin 5, and the latching groove is used to latch the counterweight block latching pin 5. The spring 6 installed at the boss can make the counterweight block latching pin 5 firmly latch the latching groove of the counterweight block after the counterweight block pull rod 2 is connected to the counterweight block, so as to prevent the counterweight block from slipping during the installation process.

[0035] Exemplarily, the shape and size of the end cap 3 are compatible with the sleeve. Specifically, the diameter of the through hole 4 on the end cap 3 is 10 mm, and the height of the counterweight block pin 5 on the end cap 3 is 8 mm; and the end of the end cap 3 away from the counterweight block pin 5 is provided with an internal thread, and the end of the sleeve 1 away from the boss is provided with an external thread that matches the internal thread. The end cap 3 and the sleeve 1 are threadedly connected to form a head together. It should be noted that the end cap 3 has a series of replaceable end caps according to the common size of the counterweight block, and they are replaced according to different usage requirements, and this application does not limit this.

[0036] In a specific embodiment, a handle 7 is provided on the outer wall of one end of the sleeve 1 close to the boss. Exemplarily, two inner thread holes are symmetrically provided on the side wall of one end of the sleeve 1 close to the boss to facilitate the installation of the handle 7.

[0037] It should be noted that all accessories involved in this embodiment are available in different sizes, and this embodiment does not limit this.

[0038] The working principle of the steam turbine rotor counterweight disassembly and assembly tool in this embodiment is as follows:

[0039] Tighten the end cover 3 with the counterweight block pin 5 on the end of the sleeve 1 away from the boss, and install handles 7 on both sides of the outer wall of the end of the sleeve 1 close to the boss, and insert the spring 6 into the boss, and pass the counterweight block pull rod 2 through the through hole from the spring 6 and the center of the sleeve 1 and out; use the cross bar of the counterweight block pull rod 2 and the handle 7 on the sleeve 1 to compress the spring 6, and screw the end of the counterweight block pull rod 2 away from the cross bar into the screw hole at the tail of the counterweight block, and then loosen the spring 6, and insert the counterweight block pin 5 into the counterweight block pin groove. At this time, the elastic force of the spring 6 can make the counterweight block firmly stuck; finally, use the handle 7 on the sleeve 1 to disassemble and assemble the counterweight block on the rotor. The steam turbine rotor counterweight block disassembly and assembly tool in this embodiment greatly simplifies the work of disassembling the counterweight block.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A steam turbine rotor counterweight disassembly and assembly tool, characterized in that: The sleeve comprises a hollow structure with an opening at one end and a boss at the other end, a through hole being provided on the boss, a counterweight rod being provided inside the sleeve along its length direction, one end of the counterweight rod extending outside the boss through the through hole, and the other end of the counterweight rod extending outside the sleeve through the opening; Among them, an end cover is provided at one end of the sleeve opening, a through hole is provided on the end cover, counterweight block pins are provided on the end cover and on both sides of the through hole, the counterweight block pull rod extends to the outside of the end cover through the through hole, and the counterweight block pull rod is located between the two counterweight block pins; the outer wall surface of the boss is sleeved with a spring.

2. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: The counterweight pull rod is an overall "T"-shaped structure, which includes a vertical rod and a horizontal rod. The vertical rod is arranged in the sleeve and along the length direction of the sleeve. One end of the vertical rod extends outside the boss and is connected to the horizontal rod.

3. The steam turbine rotor counterweight disassembly and assembly tool according to claim 2, characterized in that: An external thread is arranged on the outer wall surface of one end of the vertical rod away from the horizontal rod, a screw hole matching the external thread is arranged on the counterweight block, and the counterweight block pull rod is threadedly connected to the counterweight block.

4. The steam turbine rotor counterweight disassembly and assembly tool according to claim 3, characterized in that: The counterweight block is provided with a latch groove whose shape and size are matched with the latch pin of the counterweight block, and the latch groove is used for latching the latch pin of the counterweight block.

5. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: The shape and size of the end cover are matched with those of the sleeve, and an internal thread is provided at one end of the end cover away from the counterweight block pin, and an external thread matched with the internal thread is provided at one end of the sleeve away from the boss, and the end cover and the sleeve are threadedly connected.

6. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: A handle is arranged on the outer wall of one end of the sleeve close to the boss.

7. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: The length of the sleeve is 500 mm, and the diameter of the sleeve is 20 mm.

8. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: The diameter of the boss is 12 mm, and the height of the boss is 10 mm; the diameter of the through hole on the boss is 10 mm.

9. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: The length of the counterweight pull rod is 550 mm.

10. The steam turbine rotor counterweight disassembly and assembly tool according to claim 1, characterized in that: The diameter of the through hole on the end cover is 10 mm; the height of the counterweight block pin on the end cover is 8 mm.

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