Auxiliary device for mounting on-line balance block of steam turbine

Abstract

The utility model relates to the technical field of auxiliary devices, and discloses a steam turbine online balance block installation auxiliary device which comprises a first tool outer wall, a fastening dismounting handle is fixedly arranged on one side of the outer surface of the first tool outer wall, and one end of the first tool outer wall is connected with a first connecting flange through a bolt. A second tool outer wall is fixedly arranged at one end of the first connecting flange, and the end, away from the first connecting flange, of the second tool outer wall is connected with a second connecting flange through a bolt. A third tool outer wall is fixedly arranged at one end of the second connecting flange, a replaceable slotted wrench is connected to the end, away from the second connecting flange, of the third tool outer wall, and a connecting lock nut is embedded in the side, close to the middle point, of the interior of the first tool outer wall. According to the utility model, the problem of waste of working hours such as opening, closing, temperature reduction and temperature rise of the upper cylinder body of the steam turbine due to clamping of the balance block is solved, the installation is simple, and the working hours are saved to 1 / 2 of the original working hours.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices, in particular to an auxiliary device for installing an online balancing block of a steam turbine. Background Art

[0002] When the turbine rotor is subjected to an online dynamic balancing test, the unbalance amount and unbalance angle are determined, and then the balancing block is added to the rotor balancing groove. The traditional turbine balancing block requires the cylinder body to be opened. Since the operating temperature of the turbine unit is relatively high, exceeding 200°C, the cylinder needs to be cooled before it can be removed. Generally, the cooling process takes more than 48 hours. After the test is completed, the temperature is raised for a second start. Generally, the temperature is raised for more than 24 hours, and then a secondary balancing test is performed under the trial operation state. This will result in a waste of work time and efficiency, and there are many uncertain safety factors.

[0003] According to the above situation, without opening the turbine cylinder and without lowering the turbine operating temperature, the balancing block was added, and then a secondary balancing test and observation was carried out under the trial operation state. The startup time did not exceed 10 hours, which greatly improved the work efficiency.

[0004] Therefore, the utility model provides an auxiliary device for installing an online balancing block of a steam turbine to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an auxiliary device for the installation of an online balancing block for a steam turbine, which solves the problem of wasted working time due to the clamping of the balancing block, such as the opening and closing of the upper cylinder of the steam turbine, and the temperature drop and rise. It is not only simple to install, but also saves working hours to 1 / 2 of the original.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An auxiliary device for installing an online balancing block of a steam turbine comprises a first tooling outer wall, a fastening and disassembly handle is fixedly arranged on one side of the outer surface of the first tooling outer wall, one end of the first tooling outer wall is connected to a connecting flange 1 by bolts, one end of the connecting flange 1 is fixedly arranged to a second tooling outer wall, and one end of the second tooling outer wall away from the connecting flange 1 is connected to a connecting flange 2 by bolts;

[0008] A No. 3 tooling outer wall is fixedly provided at one end of the connecting flange 2, a replaceable flat-head wrench is connected to the end of the No. 3 tooling outer wall away from the connecting flange 2, a connecting lock nut is embedded on the midpoint side of the No. 1 tooling outer wall, an anti-fall screw handle is embedded through the No. 1 tooling outer wall, and a screw is embedded on one side of the connecting lock nut;

[0009] Through the above technical solution, the outer wall of tooling No. 2 is connected to connecting flange 1, the outer wall of tooling No. 3 is connected to connecting flange 2, and the outer wall of tooling No. 1 is connected to the outer walls of tooling No. 2 and tooling No. 3, that is, the two are connected and fixed by connecting flanges, so that the connecting flanges can be quickly connected or disassembled, which is convenient for carrying or replacement.

[0010] Furthermore, one end of the screw rod away from the connection to the lock nut is connected to a balancing block through a threaded buckle, and one end of the screw rod away from the connection to the lock nut passes through the outer wall of the No. 2 tooling and the outer wall of the No. 3 tooling;

[0011] The above technical solution is conducive to quickly completing the installation and disassembly between the screw rod and the balancing block.

[0012] Furthermore, one end of the anti-falling screw handle passes through one end of the outer wall of the No. 1 tooling, and the other end of the anti-falling screw handle is embedded in the connecting lock nut;

[0013] The above technical solution ensures that the anti-fall screw handle can rotate freely inside.

[0014] Furthermore, the interiors of the outer walls of the No. 1 tooling, the No. 2 tooling, and the No. 3 tooling are all hollow structures;

[0015] Through the above technical solution, the internal hollow structure facilitates the penetration and embedding of the screw rod, as well as the penetration and installation of the anti-fall screw rod.

[0016] Furthermore, the anti-fall screw handle comprises a connecting rod and a connecting handle, wherein the connecting handle is located outside the outer wall of the No. 1 tooling and one end of the connecting rod is fixedly arranged at the midpoint of one side of the connecting handle;

[0017] The above technical solution is helpful for the user to rotate the anti-fall screw rod between the outside for rotational use.

[0018] Furthermore, a connection plate is fixedly provided at one end of the outer wall of the No. 1 tooling and the connection plate is connected to the connection flange 1 by bolts, and connection flange 1 is fixedly provided at both ends of the outer wall of the No. 2 tooling and the one away from the connection plate is connected to the connection flange 2;

[0019] The above technical solution facilitates the rapid disassembly and installation of multiple connected combined tooling outer walls, has a simple structure, and is quick and easy to use.

[0020] The utility model has the following beneficial effects:

[0021] The utility model proposes an auxiliary device for installing an online balancing block of a steam turbine. Compared with the original traditional operation, it can solve the problem of wasting working time due to the clamping of the balancing block, such as the opening and closing of the cylinder body of the steam turbine, and the temperature reduction and increase. The device solves the problem of installing the balancing block very conveniently by utilizing a pull-out interchangeable wrench. Not only is the installation simple, but the working time is also saved to 1 / 2 of the original. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0023] Legend:

[0024] 1. Anti-fall screw handle; 2. Tightening and disassembling handle; 3. Outer wall of No. 1 tooling; 4. Connecting lock nut; 5. Connecting flange 1; 6. Connecting flange 2; 7. Replaceable flat-blade wrench; 8. Screw; 9. Balance block; 10. Outer wall of No. 2 tooling; 11. Outer wall of No. 3 tooling. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] Example

[0027] Refer to the accompanying drawings Figure 1 The utility model provides an embodiment: in view of the difficulty of clamping the balancing block when performing an online dynamic balancing test on a steam turbine rotor, an auxiliary device for installing an online balancing block for a steam turbine is manufactured, comprising a No. 1 tooling outer wall 3, a fastening and disassembly handle 2 is fixedly arranged on one side of the outer surface of the No. 1 tooling outer wall 3, the fastening and disassembly handle 2 is connected with the connecting flange 1 5, the connecting flange 2 6, and the replaceable flat-blade wrench 7, and plays the role of locking the balancing block 9 at the rotor balancing block installed inside the steam turbine from the inspection hole outside the steam turbine cylinder body;

[0028] One end of the No. 1 tooling outer wall 3 is connected to a connecting flange 1 5 by bolts, one end of the connecting flange 1 5 is fixedly provided with a No. 2 tooling outer wall 10, one end of the No. 2 tooling outer wall 10 away from the connecting flange 1 5 is connected to a connecting flange 2 6 by bolts, one end of the connecting flange 2 6 is fixedly provided with a No. 3 tooling outer wall 11, and one end of the No. 3 tooling outer wall 11 away from the connecting flange 2 6 is connected with a replaceable flat-blade wrench 7;

[0029] According to the No. 1 tool outer wall 3, one end is fixedly provided with a connection plate, and the connection plate is connected to the connection flange 1 5 by bolts, and the two ends of the No. 2 tool outer wall 10 are fixedly provided with connection flanges 1 5, and the one far away from the connection plate is connected to the connection flange 2 6; it can be known that the connection flange 1 5, the No. 2 tool outer wall 10 at one end of the component is connected or disassembled with the connection flange 2 6, which is convenient for carrying or replacement, and one end of the connection flange 2 6 is connected to the No. 2 tool outer wall 10 at one end of the connection flange 1 5, and the No. 3 tool outer wall 11 at the other end is connected to the replaceable flat-blade wrench 7, and the replaceable flat-blade wrench 7 is connected to the No. 3 tool outer wall 11 at one end of the connection flange 2 6, which can be freely disassembled and replaced with different specifications;

[0030] A connecting lock nut 4 is embedded in the midpoint of the inner side of the outer wall 3 of the No. 1 tooling. Specifically, according to the above embodiment, one end of the anti-fall screw handle 1 passes through one end of the outer wall 3 of the No. 1 tooling, and the other end of the anti-fall screw handle 1 is embedded in the connecting lock nut 4; the connecting lock nut 4 is a device for connecting and locking the anti-fall screw handle 1 and the screw 8, and the screw 8 can be replaced with different specifications through the connecting lock nut 4; the anti-fall screw handle 1 includes a connecting rod and a connecting handle, wherein the connecting handle is located on the outside of the outer wall 3 of the No. 1 tooling and one end of the connecting rod is fixedly arranged at the midpoint of one side of the connecting handle, which can facilitate the user to directly rotate the anti-fall screw handle 1 at the outer wall of the tooling.

[0031] An anti-fall screw handle 1 is embedded in the outer wall 3 of the No. 1 tool, and a screw 8 is embedded in one side of the inner side of the connecting lock nut 4; that is, the anti-fall screw handle 1 is connected to the screw 8 through the connecting lock nut 4, which is the locking part of the balance block 9 of the device, and plays the role of delivering the balance block 9 through the inspection hole of the upper cylinder of the turbine, and the balance block 9, this component is used for clamping, weighing, balancing and aligning during the online dynamic balancing of the turbine;

[0032] Specifically, according to the above embodiment, the end of the screw rod 8 away from the lock nut 4 is connected to the balancing block 9 through a thread, and the end of the screw rod 8 away from the lock nut 4 passes through the outer wall 10 of the second tooling and the outer wall 11 of the third tooling; that is, the screw rod 8 can pass through the outer wall 10 of the second tooling and the outer wall 11 of the third tooling and then be tightened or disassembled with the balancing block 9 through the thread, and the balancing block 9 is installed through the thread, which is convenient for disassembly, assembly and replacement.

[0033] Working principle: When the device is in use, the outer wall 3 of the No. 1 tooling is connected to the outer wall 10 of the No. 2 tooling by means of screws and connecting flange 1 5, and the outer wall 10 of the No. 2 tooling is connected to the outer wall 11 of the No. 3 tooling through connecting flange 1 5 and connecting flange 2 6 to complete the assembly of the outer wall of the tooling. At this time, the anti-fall screw handle 1 connected with the connecting lock nut 4 is inserted into the hollow cavity inside the outer wall of the tooling, and the screw rod 8 is also inserted into the hollow cavity and connected to the connecting lock nut 4. After the replaceable flat-blade wrench 7 is installed at one end of the outer wall 11 of the No. 3 tooling, the balance block 9 is installed at the end of the screw rod 8 away from the connecting lock nut 4 through a threaded buckle to complete the installation combination.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for installing an online balancing block of a steam turbine, comprising a first tooling outer wall (3), characterized in that: A fastening and disassembly handle (2) is fixedly provided on one side of the outer surface of the No. 1 tooling outer wall (3); one end of the No. 1 tooling outer wall (3) is connected to a connecting flange 1 (5) via bolts; one end of the connecting flange 1 (5) is fixedly provided with a No. 2 tooling outer wall (10); and one end of the No. 2 tooling outer wall (10) away from the connecting flange 1 (5) is connected to a connecting flange 2 (6) via bolts; A No. 3 tooling outer wall (11) is fixedly arranged at one end of the second connecting flange (6); a replaceable flat-head spanner (7) is connected to the end of the No. 3 tooling outer wall (11) away from the second connecting flange (6); a connecting lock nut (4) is embedded in the No. 1 tooling outer wall (3) on one side close to the midpoint; an anti-fall screw handle (1) is embedded in the No. 1 tooling outer wall (3); and a screw (8) is embedded in one side of the connecting lock nut (4).

2. The auxiliary device for installing online balancing block of a steam turbine according to claim 1, characterized in that: The end of the screw rod (8) away from the connection lock nut (4) is connected to a balance block (9) via a threaded buckle, and the end of the screw rod (8) away from the connection lock nut (4) passes through the outer wall of the second tool (10) and the outer wall of the third tool (11).

3. The auxiliary device for installing online balancing block of a steam turbine according to claim 1, characterized in that: One end of the anti-falling screw handle (1) passes through one end of the No. 1 tool outer wall (3), and the other end of the anti-falling screw handle (1) is embedded in the connecting lock nut (4).

4. The auxiliary device for installing online balancing block of a steam turbine according to claim 1, characterized in that: The interiors of the No. 1 tooling outer wall (3), the No. 2 tooling outer wall (10) and the No. 3 tooling outer wall (11) are all hollow structures.

5. The auxiliary device for installing online balancing block of a steam turbine according to claim 1, characterized in that: The anti-fall screw handle (1) comprises a connecting rod and a connecting handle, wherein the connecting handle is located outside the No. 1 tooling outer wall (3) and one end of the connecting rod is fixedly arranged at the midpoint of one side of the connecting handle.

6. The auxiliary device for installing online balancing block of a steam turbine according to claim 1, characterized in that: A connection plate is fixedly provided at one end of the outer wall (3) of the first tooling, and the connection plate is connected to the connection flange one (5) via bolts; and connection flange one (5) is fixedly provided at both ends of the outer wall (10) of the second tooling, and the one away from the connection plate is connected to the connection flange two (6).

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