Special tool for centering steam turbine unit cylinder and rotor

Abstract

A special tool for centering a steam turbine set cylinder and a rotor comprises a locking support used for being clamped in a balance groove of the steam turbine set rotor, a length measuring tool used for being matched with a processing groove of the steam turbine set cylinder and a measuring support used for being matched with the locking support and the length measuring tool. The measuring support comprises a fixed transverse plate and a supporting rod vertically and fixedly installed on the fixed transverse plate, the locking support is installed on the fixed transverse plate, a locking screw matched with the locking support is screwed on the fixed transverse plate, a steering adjusting rod parallel to the supporting rod is rotatably installed on the supporting rod, and the steering adjusting rod is connected with the locking screw. A fixing rod perpendicular to the rotary adjusting rod is installed on the rotary adjusting rod, a fixing hole matched with a length measuring tool is formed in the fixing rod, and a fixing screw is further installed on the portion, at the fixing hole, of the fixing rod in a screwed mode. The relative difference between the cylinder and the steam turbine rotor can be quickly judged, so that the cylinder is adjusted to be concentric with the steam turbine rotor, and the method is practical, convenient and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine installation and maintenance, in particular to a special tool for centering a cylinder and a rotor of a steam turbine. Background Art

[0002] In many industrial fields such as electricity, chemical industry, and petroleum, steam turbine units are an important power conversion equipment. The accuracy of their installation and commissioning is directly related to the stable operation and efficiency of the entire system. During the installation of steam turbine units, centering (i.e., making the cylinder and rotor of the steam turbine unit concentric) is a crucial task, which involves the precise positioning of key components such as the rotor, bearing seat, and stator of the steam turbine unit. In the existing technology, the centering operation of the steam turbine unit is generally achieved by touching the cylinder, which is cumbersome, labor-intensive, time-consuming, and inefficient.

[0003] Therefore, there is a lack of tools that can cooperate with the steam turbine unit to find the center in order to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a special tool for centering the cylinder and the rotor of a steam turbine unit, which is convenient for quickly judging the relative difference between the cylinder and the turbine rotor so as to adjust the cylinder so that the cylinder and the turbine rotor are concentric.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions. The utility model is a special tool for centering the cylinder and rotor of a steam turbine unit, including a locking support for clamping into the balance groove of the steam turbine unit rotor, a length measuring tool for cooperating with the machining groove of the cylinder of the steam turbine unit, and a measuring bracket for cooperating with the locking support and the length measuring tool, the measuring bracket including a fixed horizontal plate and a support rod vertically fixedly installed on the fixed horizontal plate, the locking support is installed on the fixed horizontal plate, a locking screw cooperating with the locking support is screwed on the fixed horizontal plate, a steering adjustment rod parallel to the support rod is rotatably installed on the support rod, a fixing rod vertically arranged with the rotating adjustment rod is installed on the rotating adjustment rod, a fixing hole cooperating with the length measuring tool is arranged on the fixing rod, and a fixing screw is also screwed on the fixing rod at the fixing hole.

[0006] The technical problem to be solved by the utility model can also be further achieved through the following technical solutions. For the special tool for centering the cylinder and rotor of the steam turbine unit mentioned above, the length measuring tool is a dial indicator or a micrometer, the needle of the dial indicator or the micrometer is inserted into the fixing hole and fixed by a fixing screw, and the needle of the dial indicator or the micrometer points to the machining groove of the cylinder of the steam turbine unit.

[0007] The technical problem to be solved by the utility model can be further achieved through the following technical solutions. For the special tool for centering the cylinder and rotor of the steam turbine unit mentioned above, an adjusting screw that cooperates with the steering adjusting rod is rotated on the support rod, and an adjusting hole that cooperates with the adjusting screw is provided on the steering adjusting rod. The steering adjusting rod is rotatably installed on the support rod through the adjusting hole in cooperation with the adjusting screw.

[0008] The technical problem to be solved by the utility model can be further achieved through the following technical scheme. For the special tool for centering the cylinder and rotor of the steam turbine unit mentioned above, a fitting hole matching the rotating adjusting rod is provided on the fixing rod, and a locking screw matching the rotating adjusting rod is also screwed on the fixing rod at the fitting hole.

[0009] The technical problem to be solved by the utility model can be further achieved through the following technical solutions. For the special tool for centering the cylinder and rotor of the steam turbine unit mentioned above, a dovetail groove cooperating with the locking screw is provided on the locking support, and a steel ball for cooperating with the locking screw to clamp the locking support into the balance groove of the steam turbine unit rotor is also provided in the dovetail groove.

[0010] The technical problem to be solved by the present invention can also be further achieved through the following technical solutions. For the special tool for centering the cylinder and rotor of the steam turbine unit mentioned above, two locking supports and two locking screws are provided. The two locking supports are respectively screwed on the fixed horizontal plates on both sides of the support rod, and the two locking screws are respectively screwed on the fixed horizontal plates at the two locking supports.

[0011] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the above-mentioned special tool for centering the cylinder and rotor of a steam turbine unit, the locking screw is a conical locking screw.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. Through the utility model, the relative difference between the cylinder and the turbine rotor can be determined, and then the cylinder can be adjusted to make the cylinder and the turbine rotor concentric, thereby increasing economy and ensuring safe operation of the turbine;

[0014] 2. The utility model can realize the rapid centering operation of the steam turbine unit, which saves time and effort, is highly efficient, greatly reduces the workload of workers, and improves work efficiency;

[0015] 3. The utility model is a highly efficient and accurate special tool for finding the center of a steam turbine, which is of great significance for improving the installation quality of the steam turbine and ensuring its stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of the utility model;

[0017] Figure 2 This is a structural side view of the utility model;

[0018] Figure 3 This is a usage state diagram of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1-2 A special tool for centering a steam turbine cylinder and a rotor, comprising a locking support 8 for clamping into a balance groove 11 of a steam turbine rotor, a length measuring tool 6 for cooperating with a processing groove 12 of a steam turbine cylinder, and a measuring bracket for cooperating with the locking support 8 and the length measuring tool 6. The locking support 8 is used to clamp into the balance groove 11 of the steam turbine rotor, so as to facilitate installation of the length measuring tool 6 through the measuring bracket, and then to realize installation of the length measuring tool 6 to the steam turbine rotor, so as to facilitate measurement of the relative difference between the steam turbine rotor and the steam turbine cylinder through the steam turbine rotor, so as to realize centering operation of the two, so as to ensure safe operation of the steam turbine;

[0021] Specifically, the measuring bracket includes a fixed horizontal plate 1 and a support rod 7 vertically fixedly installed on the fixed horizontal plate 1, a locking support 8 is installed on the fixed horizontal plate 1, a locking screw 2 cooperating with the locking support 8 is screwed on the fixed horizontal plate 1, a dovetail groove 9 cooperating with the locking screw 2 is provided on the locking support 8, and a steel ball 10 for cooperating with the locking screw 2 to clamp the locking support 8 into the balance groove 11 of the steam turbine unit rotor is also provided in the dovetail groove 9, and both ends of the dovetail groove 9 extend to the locking support 8. The edge of the dovetail groove 9 is larger inside and smaller at both ends, so that the steel ball 10 can move freely in the dovetail groove 9 and can partially expose the dovetail groove 9, but the steel ball 10 will not fall out of the dovetail groove 9, so that the locking screw 2 is screwed into the dovetail groove 9 to drive the steel ball 10 to move, so that a part of the steel ball 10 protrudes out of the dovetail groove 9, and then contacts with the inner wall of the turbine rotor balance groove 11, so as to realize that the locking support 8 is firmly clamped into the turbine rotor balance groove 11;

[0022] A steering adjustment rod 3 arranged parallel to the support rod 7 is rotatably mounted on the support rod 7, an adjusting screw 4 cooperating with the steering adjustment rod 3 is rotatably mounted on the support rod 7, an adjusting hole cooperating with the adjusting screw 4 is arranged on the steering adjustment rod 3, the steering adjustment rod 3 is rotatably mounted on the support rod 7 through the adjusting hole in cooperation with the adjusting screw 4, the steering adjustment rod 3 can be clamped and fixed by tightening the adjusting screw 4, and the adjusting screw 4 can also be loosened to facilitate loosening the steering adjustment rod 3, and then the steering adjustment rod 3 and the support rod 7 can be adjusted to rotate relative to each other, so as to realize the rotation adjustment of the steering adjustment rod 3;

[0023] A fixing rod 5 vertically arranged with the rotating adjusting rod is installed on the rotating adjusting rod, and is used for installing a length measuring tool 6. Specifically, a fixing hole matched with the length measuring tool 6 is arranged on the fixing rod 5, and a fixing screw is also screwed on the fixing rod 5 at the fixing hole. Preferably, the length measuring tool 6 is a dial gauge or a micrometer, and the needle of the dial gauge or the micrometer is inserted into the fixing hole and fixed by the fixing screw, and the needle of the dial gauge or the micrometer points to the processing groove 12 of the cylinder of the steam turbine unit;

[0024] Preferably, a fitting hole cooperating with the rotating adjustment rod is provided on the fixing rod 5, and a locking screw cooperating with the rotating adjustment rod is also screwed on the fixing rod 5 at the fitting hole. The fitting hole is larger than the rotating adjustment rod, so that the rotating adjustment rod can be locked by the locking screw, so that the fixing rod 5 can be installed on the rotating adjustment rod. At the same time, the installation position of the fixing rod 5 on the rotating adjustment rod can be adjusted by loosening the locking screw, so as to adjust the position of the length measuring tool 6.

[0025] Preferably, two locking supports 8 and two locking screws 2 are provided, and the two locking supports 8 are respectively screwed on the fixed horizontal plate 1 on both sides of the support rod 7, and the two locking screws 2 are respectively screwed on the fixed horizontal plate 1 at the two locking supports 8. Further preferably, the locking screw 2 is a conical locking screw 2.

[0026] Reference Figure 3 When in use, first install the length measuring tool 6 on the fixing rod 5 through the fixing screw, then insert the locking support 8 into the turbine rotor balancing groove 11, and use the locking screw 2 to screw into the dovetail groove 9 of the locking support 8, squeeze the steel ball 10 to make it press against the inner wall of the turbine rotor balancing groove 11, and then firmly clamp the locking support 8 into the turbine rotor balancing groove 11, and then rotate the steering adjustment rod 3 to achieve the steering adjustment of the length measuring tool 6, so that the measuring head of the length measuring tool 6 points to the turbine cylinder machining groove 12 and contacts it, so as to measure the relative difference between the cylinder and the rotor, and adjust the cylinder according to the measurement result so that the cylinder and the rotor are concentric, so as to achieve the centering operation of the turbine and ensure the safe operation of the turbine.

Claims

1. A special tool for centering the cylinder and rotor of a steam turbine unit, characterized in that: It includes a locking support for clamping into the balance groove of the turbine rotor, a length measuring tool for cooperating with the processing groove of the turbine cylinder, and a measuring bracket for cooperating with the locking support and the length measuring tool. The measuring bracket includes a fixed horizontal plate and a support rod vertically fixedly installed on the fixed horizontal plate. The locking support is installed on the fixed horizontal plate, and a locking screw cooperating with the locking support is screwed on the fixed horizontal plate. A steering adjustment rod parallel to the support rod is rotatably installed on the support rod, a fixing rod vertically arranged with the rotating adjustment rod is installed on the rotating adjustment rod, a fixing hole cooperating with the length measuring tool is arranged on the fixing rod, and a fixing screw is also screwed on the fixing rod at the fixing hole.

2. The special tool for centering the cylinder and rotor of a steam turbine unit according to claim 1, characterized in that: The length measuring tool is a dial indicator or a micrometer, the needle of which is inserted into a fixing hole and fixed by a fixing screw, and the needle of which points to the machining groove of the cylinder of the steam turbine unit.

3. The special tool for centering the cylinder and rotor of a steam turbine unit according to claim 1, characterized in that: An adjusting screw cooperating with the steering adjusting rod is rotatably arranged on the supporting rod, an adjusting hole cooperating with the adjusting screw is arranged on the steering adjusting rod, and the steering adjusting rod is rotatably mounted on the supporting rod through the adjusting hole cooperating with the adjusting screw.

4. The special tool for centering the cylinder and rotor of a steam turbine unit according to claim 1 or 3, characterized in that: A sleeve hole matched with the rotating adjusting rod is arranged on the fixing rod, and a locking screw matched with the rotating adjusting rod is screwed on the fixing rod at the sleeve hole.

5. The special tool for centering the cylinder and rotor of a steam turbine unit according to claim 1, characterized in that: A dovetail groove matched with a locking screw is arranged on the locking support, and a steel ball matched with the locking screw to clamp the locking support into the balance groove of the turbine unit rotor is also arranged in the dovetail groove.

6. The special tool for centering the cylinder and rotor of a steam turbine unit according to claim 1 or 5, characterized in that: The locking supports and locking screws are both provided in two numbers, the two locking supports are respectively screwed on the fixed transverse plates on both sides of the support rod, and the two locking screws are respectively screwed on the fixed transverse plates at the two locking supports.

7. The special tool for centering the cylinder and rotor of a steam turbine unit according to claim 6, characterized in that: The locking screw is a conical locking screw.

Images