Tool for adjusting height difference of split of low-pressure outer cylinder of steam turbine

Abstract

The utility model discloses a steam turbine low-pressure outer cylinder split height difference adjusting tool which comprises a main plate, the main plate is arranged in a concave shape, and a plurality of installation holes are formed in the main plate. One end of the vertical plate is fixedly connected with the upper surface of the main plate; the fastening bolt is arranged on the main plate, and the lower end of the fastening bolt is provided with a first contact end; and the adjusting bolt is arranged on the main plate, and the lower end of the adjusting bolt is provided with a second contact end. Through the application of the utility model, the tool for adjusting the height difference of the split of the low-pressure outer cylinder of the steam turbine solves the problem that the height difference between the split of the end plate and the split of the side plate of the low-pressure outer cylinder of the steam turbine is difficult to adjust, so that the adjustment process is more convenient to operate; the adjusting tool can well meet the adjusting requirement of the low-pressure outer cylinder, meanwhile, only little manpower is needed for installation, adjustment and disassembly, and manpower resources are effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine installation construction, in particular to a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a steam turbine. Background Technique

[0002] The large-scale low-pressure outer cylinder of a steam turbine is mainly supplied in the form of loose parts and needs to be assembled on site. Among them, when assembling the side plates and end plates of the low-pressure outer cylinder, if the height difference between the middle split surface of the side plate of the low-pressure outer cylinder and the horizontal middle split surface of the end plate is large, it will cause air leakage when the steam turbine works. Therefore, the requirement for the height difference between the middle split surface of the side plate and the horizontal middle split surface of the end plate is relatively high. In the prior art, most of them use the method of a crane cooperating with a chain block to adjust the relative height between the end plate and the side plate, but this method has low adjustment accuracy, takes a long time, and is not conducive to on-site operation. Content of the Utility Model

[0003] In view of this, to solve the above problems, the purpose of the utility model is to provide one, including:

[0004] The main board is arranged in a concave shape, and a plurality of mounting holes are formed on the main board, and a rectangular notch is formed on the main board;

[0005] The vertical board, one end of the vertical board is fixedly connected to the upper surface of the main board, the vertical board is arranged in an L shape, and the other end of the vertical board extends above the rectangular notch;

[0006] At least one fastening bolt is arranged on the main board, the fastening bolt is installed in one of the mounting holes, and the lower end of the fastening bolt has a first contact end, and the first contact end is arranged to be movable up and down;

[0007] At least one adjusting bolt is arranged on the main board, the adjusting bolt is installed in another mounting hole, and the lower end of the adjusting bolt has a second contact end, and the second contact end is arranged to be movable up and down.

[0008] In another preferred embodiment, the main board includes: a first part, a second part and a third part which are connected in sequence, a rectangular notch is formed between the first part, the second part and the third part, and one end of the first part and one end of the third part are both fixedly connected to one end of the second part.

[0009] In another preferred embodiment, the plurality of mounting holes include: at least one first mounting hole and at least one second mounting hole, the first mounting hole is arranged on the first part and / or the third part, and the second mounting hole is arranged on the second part.

[0010] In another preferred embodiment, the dimension of the first part in the vertical direction is smaller than that of the second part in the vertical direction, and a first stepped portion is formed between the lower surface of the first part and the lower surface of the second part.

[0011] In another preferred embodiment, the dimension of the third part in the vertical direction is smaller than that of the second part in the vertical direction, and a second stepped portion is formed between the lower surface of the third part and the lower surface of the second part.

[0012] In another preferred embodiment, the vertical plate includes a fourth part and a fifth part connected to each other. The fifth part is fixedly arranged with the main board. One end of the fourth part is fixedly connected to the fifth part, and the other end of the fourth part extends horizontally in a direction away from the fifth part. The fourth part is arranged above the rectangular notch.

[0013] In another preferred embodiment, the adjusting bolt and the first mounting hole are connected by a threaded fit.

[0014] In another preferred embodiment, the fastening bolt and the second mounting hole are connected by a threaded fit.

[0015] In another preferred embodiment, the number of the fastening bolts is four, and the number of the adjusting bolts is two. One adjusting bolt is respectively arranged on the first part and the third part, and all four fastening bolts are arranged on the second part. The four fastening bolts are arranged in a rectangular array.

[0016] The positive effects of the present utility model compared with the prior art due to the adoption of the above technical solutions are as follows:

[0017] By applying the present utility model, a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a steam turbine is provided. This adjusting tool solves the problem of difficult adjustment of the height difference between the middle split surface of the end plate and the middle split surface of the side plate of the low-pressure outer cylinder of the steam turbine, makes the adjustment process more convenient to operate. This adjusting tool can well meet the adjustment requirements of the low-pressure outer cylinder, and only requires very little manpower for installation, adjustment and removal work, effectively saving human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a steam turbine according to the present utility model;

[0019] Figure 2 It is the structure diagram of the main board of a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a steam turbine according to the present utility model;

[0020] Figure 3 It is a vertical plate structure diagram of a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a steam turbine according to the present utility model;

[0021] Figure 4 It is a side view of the overall structure of a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a steam turbine according to the present utility model.

[0022] In the attached drawings: 100, main board; 110, first part; 120, second part; 130, third part; 140, mounting hole; 141, first mounting hole; 142, second mounting hole; 150, first stepped portion; 160, second stepped portion; 200, vertical plate; 210, fourth part; 220, fifth part; 300, fastening bolt; 310, first contact end; 400, adjusting bolt; 410, second contact end. Specific embodiments

[0023] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the attached drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0025] It should be particularly noted that the "horizontal" and "vertical" in the present utility model are both used to illustrate the approximate positional relationship, rather than strict "horizontal plane" or "vertical plane".

[0026] Such as Figures 1 to 4As shown in the figure, there is shown a tool for adjusting the height difference of the middle split surface of the low-pressure outer cylinder of a turbine in a preferred embodiment, including: a main board 100, the main board 100 is arranged in a concave shape, and a plurality of mounting holes 140 are provided on the main board 100, and a rectangular notch is formed on the main board 100; a vertical board 200, one end of the vertical board 200 is fixedly connected to the upper surface of the main board 100, the vertical board 200 is arranged in an L shape, and the other end of the vertical board 200 extends above the rectangular notch; at least one fastening bolt 300, the fastening bolt 300 is arranged on the main board 100, the fastening bolt 300 is installed in a mounting hole 140, and the lower end of the fastening bolt 300 has a first contact end 310, and the first contact end 310 is arranged to be movable up and down; at least one adjusting bolt 400, the adjusting bolt 400 is arranged on the main board 100, the adjusting bolt 400 is installed in another mounting hole 140, and the lower end of the adjusting bolt 400 has a second contact end 410, and the second contact end 410 is arranged to be movable up and down.

[0027] Further, as a preferred embodiment, the main board 100 includes: a first part 110, a second part 120 and a third part 130 which are connected in sequence, a rectangular notch is formed between the first part 110, the second part 120 and the third part 130, and one end of the first part 110 and one end of the third part 130 are both fixedly connected to one end of the second part 120.

[0028] Further, as a preferred embodiment, the first part 110 and the third part 130 are arranged in parallel in the horizontal direction.

[0029] Further, as a preferred embodiment, the plurality of mounting holes 140 include: at least one first mounting hole 141 and at least one second mounting hole 142, the first mounting hole 141 is provided on the first part 110 and / or the third part 130, and the second mounting hole 142 is provided on the second part 120.

[0030] Further, as a preferred embodiment, the dimension of the first part 110 in the vertical direction is smaller than the dimension of the second part 120 in the vertical direction, and a first stepped portion 150 is formed between the lower surface of the first part 110 and the lower surface of the second part 120.

[0031] Further, as a preferred embodiment, the dimension of the third part 130 in the vertical direction is smaller than the dimension of the second part 120 in the vertical direction, and a second stepped portion 160 is formed between the lower surface of the third part 130 and the lower surface of the second part 120.

[0032] Further, as a preferred embodiment, the projection of the above-mentioned first stepped portion 150 in the direction parallel to the main board 100 coincides with the projection of the second stepped portion 160 in the direction parallel to the main board 100.

[0033] Further, as a preferred embodiment, the vertical plate 200 includes a fourth part 210 and a fifth part 220 that are connected to each other. The fifth part 220 is fixedly arranged with the main board 100. One end of the fourth part 210 is fixedly connected to the fifth part 220, and the other end of the fourth part 210 extends horizontally in a direction away from the fifth part 220. The fourth part 210 is arranged above the rectangular notch.

[0034] Further, as a preferred embodiment, the adjusting bolt 400 and the first mounting hole 141 are connected by screw thread fit.

[0035] Further, as a preferred embodiment, the size of the adjusting bolt 400 in the vertical direction is greater than the size of the first mounting hole 141 in the vertical direction.

[0036] Further, as a preferred embodiment, when the upper end of the adjusting bolt 400 abuts against the upper part of the first mounting hole 141, the lower end of the adjusting bolt 400 extends out of the first mounting hole 141. At this time, the second contact end 410 is located below the first mounting hole 141.

[0037] Further, as a preferred embodiment, the fastening bolt 300 and the second mounting hole 142 are connected by screw thread fit.

[0038] Further, as a preferred embodiment, the size of the fastening bolt 300 in the vertical direction is greater than the size of the second mounting hole 142 in the vertical direction.

[0039] Further, as a preferred embodiment, when the upper end of the fastening bolt 300 abuts against the upper part of the second mounting hole 142, the lower end of the structural bolt extends out of the second mounting hole 142. At this time, the first contact end 310 is located below the second mounting hole 142.

[0040] Further, as a preferred embodiment, the number of the fastening bolts 300 is four, and the number of the adjusting bolts 400 is two; one adjusting bolt 400 is respectively arranged on the first part 110 and the third part 130, and the four fastening bolts 300 are all arranged on the second part 120, and the four fastening bolts 300 are arranged in a rectangular array.

[0041] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly.

[0042] The present invention further has the following implementation manners on the above basis:

[0043] In a further embodiment of the present invention, the adjusting bolt 400 is preferably a hexagon bolt.

[0044] In a further embodiment of the present utility model, the vertical plate 200 further correspondingly has a cushion block, which is used for the leveling work of the adjustment tool.

[0045] Specific operation steps of the adjustment tool for the height difference between the horizontal split surfaces of the low-pressure outer cylinder of the steam turbine of the present utility model:

[0046] Taking the adjustment work of the height difference between the horizontal split surface of the end plate and the split surface of the side plate of the low-pressure outer cylinder of the steam turbine as an example, a number of threaded holes matching the fastening bolts 300 are arranged on the horizontal split surface of the end plate of the low-pressure outer cylinder of the steam turbine. The second part 120 is abutted against the horizontal split surface of the end plate, and the fastening bolt 300 is screwed. The lower end of the fastening bolt 300 extends out of the second mounting hole 142; at this time, the first contact end 310 extends into the threaded hole, and the fastening bolt 300 is screwed so that the head of the fastening bolt 300 abuts against the main board 100; at this time, the lower surface of the second part 120 is closely attached to the horizontal split surface of the end plate; the second contact end 410 is abutted against the stainless steel gasket on the split surface of the side plate of the low-pressure outer cylinder of the steam turbine (a stainless steel gasket is padded on the split surface of the side plate in advance to prevent the adjustment bolt 400 from damaging the split surface of the side plate). While moving the split surface of the side plate up or down, the adjustment bolt 400 is screwed to adjust the height difference between the split surface of the side plate and the horizontal split surface of the end plate; at this time, the first step portion 150 and the second step portion 160 are located directly above the split surface of the side plate. During this process, the user can directly observe or measure with a corresponding measuring instrument through the rectangular notch the alignment situation between the horizontal split surface of the end plate and the split surface of the side plate to judge the adjustment situation of the adjustment tool. When the height difference between the horizontal split surface of the end plate and the split surface of the side plate is adjusted to the required range, the connection bolts preset between the side plate and the end plate are fastened, and a number of positioning pins are set on the end plate and the side plate. Finally, the adjustment tool is removed. Thus, the working process of the adjustment tool for the height difference between the horizontal split surfaces of the low-pressure outer cylinder of the steam turbine is completed.

[0047] The above are only the preferred embodiments of the present utility model, and thus do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A tool for adjusting the height difference of the split surface of the low-pressure outer cylinder of a steam turbine, characterized in that, Including: A main board, the main board is arranged in a concave shape, several mounting holes are provided on the main board, and a rectangular notch is formed on the main board; A vertical board, one end of the vertical board is fixedly connected to the upper surface of the main board, the vertical board is arranged in an L shape, and the other end of the vertical board extends above the rectangular notch; At least one fastening bolt, the fastening bolt is arranged on the main board, the fastening bolt is installed in one of the mounting holes, and a first contact end is provided at the lower end of the fastening bolt, and the first contact end is arranged to be movable up and down; At least one adjusting bolt, the adjusting bolt is arranged on the main board, the adjusting bolt is installed in another mounting hole, and a second contact end is provided at the lower end of the adjusting bolt, and the second contact end is arranged to be movable up and down.

2. The adjusting tool for the height difference of the mid - parting surface of the low - pressure outer cylinder of the steam turbine according to claim 1, wherein, The main board includes: a first part, a second part and a third part connected in sequence, the rectangular notch is formed between the first part, the second part and the third part, and one end of the first part and one end of the third part are both fixedly connected to one end of the second part.

3. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 2, characterized in that The several mounting holes include: at least one first mounting hole and at least one second mounting hole, the first mounting hole is arranged on the first part and / or the third part, and the second mounting hole is arranged on the second part.

4. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 2, characterized in that The dimension of the first part in the vertical direction is smaller than the dimension of the second part in the vertical direction, and a first stepped portion is formed between the lower surface of the first part and the lower surface of the second part.

5. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 2, characterized in that, The dimension of the third part in the vertical direction is smaller than the dimension of the second part in the vertical direction, and a second stepped portion is formed between the lower surface of the third part and the lower surface of the second part.

6. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 1, characterized in that, The vertical board includes: a fourth part and a fifth part connected to each other, the fifth part is fixedly arranged with the main board, one end of the fourth part is fixedly connected to the fifth part, the other end of the fourth part extends horizontally in a direction away from the fifth part, and the fourth part is arranged above the rectangular notch.

7. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 3, characterized in that, The adjusting bolt and the first mounting hole are connected by thread fit.

8. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 3, characterized in that, The fastening bolt and the second mounting hole are connected by thread fit.

9. The steam turbine low-pressure outer cylinder split surface height difference adjustment tool according to claim 2, characterized in that, The number of the fastening bolts is four, and the number of the adjusting bolts is two; one adjusting bolt is respectively arranged on the first part and the third part, and the four fastening bolts are all arranged on the second part, and the four fastening bolts are arranged in a rectangular array.

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