Adjusting assembly for steam turbine cylinder connection
By designing an adjustment assembly for connecting the front cylinder and the exhaust cylinder of a condensing steam turbine, which includes a fixed body, a fixed arm, an adjusting arm, an adjusting head and a lifting bolt, the problem of complicated operation in connecting the front cylinder and the exhaust cylinder of a condensing steam turbine is solved, and fast and accurate centering adjustment is achieved, meeting the market's lean requirements.
Patent Information
- Application Number
- CN202422819702.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the existing technology, the connection method between the front cylinder and the exhaust cylinder of the condensing steam turbine is cumbersome to operate, has many safety hazards, is difficult to adjust, cannot be adjusted accurately in one go, is time-consuming and labor-intensive, and cannot meet the market's lean requirements.
A turbine cylinder connection adjustment assembly is used, including a fixed body, a fixed arm, an adjusting arm, an adjusting head, a lifting block and a lifting bolt. These components are used to achieve precise alignment of the front cylinder and the row cylinder, and fine-tuning is performed using a regular polygonal limit head and lifting bolts to simplify the operating process.
It achieves fast and accurate alignment of the front cylinder and the row cylinder, reduces operational difficulty and safety hazards, improves adjustment efficiency, and meets the market demand for leanness.
Smart Images
Figure CN223398735U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam turbine cylinder connection tools, in particular to an adjusting assembly for steam turbine cylinder connection. Background Art
[0002] A steam turbine converts the thermal energy in steam into mechanical energy through the work performed by the rotor and the turbine's stationary body. Steam turbines are categorized by their intended use as back-pressure and condensing steam turbines. Back-pressure steam turbines are primarily used for heat generation, further powering low-pressure steam turbines and other applications requiring secondary steam utilization. Condensing steam turbines are primarily used for power generation. Condensing steam turbines operate by condensing steam through a condenser after it expands and performs work within the turbine. This water then needs to be reheated for further use.
[0003] The main structural difference between a condensing steam turbine and a back-pressure steam turbine is that the cylinders of a condensing steam turbine are divided into front and rear cylinders (row cylinders), adding a row cylinder to the back-pressure turbine. The row cylinders differ from the front cylinders in that the front cylinders are high- and medium-pressure cylinders, while the row cylinders are low-pressure cylinders. For economic reasons, the materials and processing of the front and rear cylinders differ. The division of the cylinders into front and row cylinders increases the connection work between the front and row cylinders, necessitating centering with a locating shaft to minimize misalignment between the front and row cylinders.
[0004] The existing method of connecting the front cylinder and the row cylinder is to hard connect them through the centering rear bolts, and the method of adjusting the centering value is simply to use a jack to support the lifting lug to adjust left and right to achieve the purpose of centering the cylinder. However, this method is cumbersome to operate, has many safety hazards, is difficult to adjust, cannot be adjusted accurately in one go, and requires repeated adjustments, which is time-consuming and labor-intensive. The final effect can only basically meet the design requirements and does not meet the lean requirements of the market environment. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a turbine cylinder connection adjustment assembly, which can fine-tune the cylinder connection position after the front cylinder and the discharge cylinder of the condensing steam turbine are centered.
[0006] The utility model adopts the following technical solutions:
[0007] A steam turbine cylinder connection adjustment assembly comprises: a fixed body having a first mounting hole and a second mounting hole on its upper surface and a third mounting hole on its side, wherein the second mounting hole is a regular polygonal hole; a fixed arm having one end detachably arranged on the first mounting hole and arranged perpendicularly to the fixed body; an adjustment arm having one end detachably arranged on the third mounting hole and arranged perpendicularly to the fixed body; an adjustment head located in the second mounting hole and having a regular polygonal limiting head matching the second mounting hole; a lifting block connected to the lower surface of the adjusting head and having a fourth mounting hole; and a lifting bolt threadedly engaged in the fourth mounting hole.
[0008] Preferably, the second mounting hole is a regular dodecagonal hole, and the limiting head is a regular dodecagonal structure.
[0009] Preferably, a fixed body support rod is provided on one side of the fixed body.
[0010] Preferably, the fixed body support rod is arranged perpendicular to the fixed body; the fixed body support rod is arranged parallel to the adjustment arm.
[0011] Preferably, the lower end of the adjusting head has a threaded mounting hole, and the upper end of the lifting block has a matching threaded head.
[0012] Preferably, rotating the lifting block can cause the adjusting head to move vertically along the second mounting hole.
[0013] Preferably, a spring is provided between the adjusting head and the lifting block.
[0014] Compared with the prior art, the utility model has the following advantages: the utility model provides an adjustment assembly for connecting a steam turbine cylinder, comprising a fixed body, a fixed arm, an adjusting arm, an adjusting head, a lifting block and a lifting bolt. The fixed arm is in close contact with the inner wall of the discharge cylinder, and the adjusting arm contacts the split bolt in the discharge cylinder at a suitable position. The position of the front cylinder is adjusted so that it is completely fitted with the support of the fixed body. After the front cylinder and the discharge cylinder are centered, the centering data is confirmed by pressing the lifting screw against the front cylinder to complete the cylinder connection assembly task. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of the regulating assembly for connecting the turbine to the cylinder.
[0016] Figure 2 for Figure 1 Schematic diagram of the explosion structure.
[0017] Figure 3 Schematic diagram of the structure of the adjustment head.
[0018] Figure 4 This is a schematic diagram of the usage status of the adjustment assembly for connecting the turbine cylinder.
[0019] Figure 5 for Figure 4 A partial enlarged view of part A.
[0020] Figure 6 This is a schematic diagram showing the usage status of the adjustment assembly for connecting the turbine to the cylinder from another perspective.
[0021] Figure 7 for Figure 6 A partial enlarged view of part B.
[0022] In the figure, fixed body 1, first mounting hole 1-1, second mounting hole 1-2, third mounting hole 1-3, fixed body support rod 1-4, fixed arm 2, adjusting arm 3, adjusting head 4, limit head 4-1, threaded mounting hole 4-2, lifting block 5, fourth mounting hole 5-1, threaded head 5-2, lifting bolt 6, spring 7, front cylinder 8, and exhaust cylinder 9. DETAILED DESCRIPTION
[0023] In order to facilitate understanding of the technical solution of the present utility model, the following is a detailed description with reference to the accompanying drawings and specific embodiments.
[0024] like Figure 1-3 As shown, an adjustment assembly for connecting a steam turbine to a cylinder includes a fixed body 1, a fixed arm 2, an adjustment arm 3, an adjustment head 4, a lifting block 5, a lifting bolt 6 and a spring 7.
[0025] The upper surface of the fixed body 1 has a first mounting hole 1-1 and a second mounting hole 1-2, and the side surface has a third mounting hole 1-3 and a fixed body support rod 1-4, and the second mounting hole 1-2 is a regular polygonal hole.
[0026] One end of the fixing arm 2 is detachably arranged on the first mounting hole 1 - 1 and is arranged perpendicular to the fixing body 1 ; the fixing arm 2 is located on the lower surface of the fixing body 1 .
[0027] One end of the adjusting arm 3 is detachably arranged on the third mounting hole 1 - 3 and is arranged perpendicular to the fixed body 1 ; the adjusting arm 3 and the fixed body support rod 1 - 4 are located on the left and right sides of the fixed body 1 .
[0028] The adjusting head 4 is located in the second mounting hole 1-2, and has a regular polygonal limiting head 4-1 matching the second mounting hole 1-2 and an adjusting head body located below the limiting head 4-1, and a threaded mounting hole 4-2 is provided on the adjusting head body.
[0029] The lifting block 5 is connected to the lower surface of the adjusting head 4 and has a fourth mounting hole 5 - 1 and a threaded head 5 - 2 ; the threaded head 5 - 2 is threadedly matched with the threaded mounting hole 4 - 2 of the adjusting head 4 .
[0030] The jacking bolt 6 is threadedly engaged in the fourth mounting hole 5 - 1 .
[0031] The spring 7 is located in the second mounting hole 1 - 2 and is sleeved on the outside of the regulating head body.
[0032] like Figure 4-7 As shown, when in use, the front cylinder 8 and the row cylinder 9 are pre-connected so that the inner circles of the front cylinder 8 and the row cylinder 9 are roughly aligned; the adjusting assembly is placed on the row cylinder 9, the fixed arm 2 is tightly attached to the inner wall of the row cylinder 9, the adjusting arm 3 is in contact with the row cylinder center split bolt 10 at the appropriate position, and the adjusting assembly is initially installed on the row cylinder 9, and then the position of the front cylinder 8 is adjusted to make it completely fit with the fixed body support rod 1-4; then the front cylinder and the row cylinder are centered by using a dial indicator, and the centering data is confirmed by rotating the jacking screw 6 to press against the front cylinder 8, that is, the connection of the front cylinder 8 and the row cylinder 9 is completed by the adjusting assembly of the present invention.
[0033] In addition, when in use, the lifting block 5 can be rotated in the opposite direction so that the adjusting head 4 moves vertically upward along the second mounting hole 1-2. When the adjusting head 4 can be disengaged from the second mounting hole 1-2, the spring 7 will push the adjusting head 4 out. At this time, the adjusting head 4 can be manually rotated to a certain angle. When the second mounting hole 1-2 is a regular dodecagonal hole and the limit head 4-1 is a regular dodecagonal structure, each rotation of the adjusting head 4 through a span can cause the lifting screw 6 on the final lifting block 5 to rotate 30 degrees; after adjusting the angle of the adjusting head 4, tighten the lifting block 5, and finally install the lifting screw 6 so that the lifting screw 6 can rest against the surface of the front cylinder 8.
[0034] In order to provide more angles of adjustment, the second mounting hole 1-2 and the limiting head 4-1 may be other polygons, such as a regular octagon or a icosagon.
[0035] As a preferred embodiment, the fixed body support rods 1 - 4 are arranged perpendicular to the fixed body 1 ; the fixed body support rods 1 - 4 are arranged parallel to the adjustment arm 3 .
[0036] The above are only preferred embodiments of the present invention. The scope of protection of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the scope of protection of the present invention.
Claims
1. A steam turbine cylinder connection adjustment assembly, characterized in that: include: A fixed body (1) has a first mounting hole (1-1) and a second mounting hole (1-2) on its upper surface, and a third mounting hole (1-3) on its side surface, wherein the second mounting hole (1-2) is a regular polygonal hole; A fixed arm (2) is detachably mounted on the first mounting hole (1-1) at one end and is disposed perpendicularly to the fixed body (1); an adjusting arm (3) is detachably mounted on the third mounting hole (1-3) at one end and is disposed perpendicularly to the fixed body (1); an adjusting head (4) is located in the second mounting hole (1-2) and has a regular polygonal limiting head (4-1) that matches the second mounting hole (1-2); A lifting block (5) is connected to the lower surface of the regulating head (4) and has a fourth mounting hole (5-1); The jacking bolt (6) is threadably engaged with the fourth mounting hole (5-1).
2. The steam turbine cylinder connection adjustment assembly according to claim 1, characterized in that: The second mounting hole (1-2) is a regular dodecagonal hole, and the limiting head (4-1) is a regular dodecagonal structure.
3. The steam turbine cylinder connection adjustment assembly according to claim 1, characterized in that: A fixed body support rod (1-4) is provided on one side of the fixed body (1).
4. The steam turbine cylinder connection adjustment assembly according to claim 3, characterized in that: The fixed body support rods (1-4) are arranged perpendicularly to the fixed body (1); the fixed body support rods (1-4) are arranged parallel to the adjustment arm (3).
5. The steam turbine cylinder connection adjustment assembly according to claim 1, characterized in that: The lower end of the regulating head (4) is provided with a threaded mounting hole (4-2), and the upper end of the lifting block (5) is provided with a matching threaded head (5-2).
6. The steam turbine cylinder connection adjustment assembly according to claim 5, characterized in that: Rotating the lifting block (5) can cause the adjusting head (4) to move vertically along the second mounting hole (1-2).
7. The steam turbine cylinder connection adjustment assembly according to claim 1, characterized in that: A spring (7) is provided between the regulating head (4) and the lifting block (5).