Supporting and adjusting device for turbine equipment
By setting an axially symmetrical guide rod and guide plate gap structure in the turbine equipment, the problem of motion obstruction caused by thermal expansion and deformation of the middle cylinder was solved, and the stable operation and performance improvement of the equipment were achieved.
Patent Information
- Application Number
- CN202520127924.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Thermal expansion and deformation of the cylinder in existing turbine equipment can obstruct movement, affecting the adjustment of the stator blade angle, which in turn leads to problems such as reduced unit performance, vibration, noise, and abnormal temperature.
Cylindrical and flat-round guide rods are symmetrically distributed in the turbine equipment. The gap between the guide rods and the guide plate absorbs the thermal expansion and deformation of the middle cylinder, limits the vibration of the middle cylinder, and ensures the smooth movement of the middle cylinder.
It effectively absorbs thermal expansion and deformation of the cylinder, avoids obstruction of movement, improves unit performance, reduces vibration and noise, and ensures stable operation of the equipment.
Smart Images
Figure CN223621651U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of turbine equipment, and in particular relates to a support adjustment device for turbine equipment. Background Technology
[0002] With the increasing demand for energy and the pursuit of environmentally friendly energy, turbine equipment, as a common energy-saving device, occupies an important position in the field of energy conversion. Existing turbine equipment consists of three cylinders: an outer cylinder, a middle cylinder, and an inner cylinder. The middle cylinder, located between the outer and inner cylinders, helps reduce noise and protects the internal regulating mechanism. By adjusting the stator blade angle, it meets the requirements of varying operating conditions. During turbine operation, the control system on the outer cylinder drives the middle cylinder to reciprocate axially. The middle cylinder, in turn, drives the blades of the inner cylinder to adjust their angle, thereby achieving operating condition regulation to meet the turbine's power requirements. Therefore, during turbine operation, controlling the thermal expansion and deformation of the middle cylinder is crucial. Otherwise, the movement of the middle cylinder may be obstructed, affecting the adjustment of the stator blade angle, leading to problems such as decreased unit performance, unit vibration, noise, unit stability, and service life, ultimately impacting the normal operation of the equipment and the user experience. Summary of the Invention
[0003] To overcome the shortcomings of the prior art, the present invention aims to provide a support and adjustment device for turbine equipment. This device utilizes a cylindrical first guide rod and a flattened oval second guide rod, symmetrically distributed along the axial direction of the turbine equipment, to slide axially back and forth along the central cylinder. This satisfies the axial movement requirement while limiting the vibration amplitude of the central cylinder during unit operation. Furthermore, by creating a gap between the second guide rod and the upper and / or lower guide plates, thermal expansion is accommodated, allowing some of the thermal expansion generated by the central cylinder during operation to be absorbed, reducing the stress caused by thermal expansion. This avoids problems caused by thermal expansion of the central cylinder, solving the technical problem that thermal expansion deformation of the central cylinder hinders its movement, preventing adjustment of the stator blade angle, and consequently leading to decreased unit performance, unit vibration, noise, and abnormal internal temperature.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A support adjustment device for a turbine is located between the outer cylinder and the middle cylinder of the turbine. It includes a first adjustment mechanism and a second adjustment mechanism arranged symmetrically along the axial direction of the turbine. The first adjustment mechanism and the second adjustment mechanism are both installed on the working fluid inlet side and the working fluid outlet side of the turbine and are fixedly connected to the fixed seat 1 on the outer cylinder of the turbine. The first adjustment mechanism passes through the space between the first support plate 9 and the second support plate 10, and the second adjustment mechanism passes through the space between the third support plate 17 and the fourth support plate 18. The first support plate 9, the second support plate 10, the third support plate 17 and the fourth support plate 18 are all fixedly connected to the middle cylinder.
[0006] The first adjustment mechanism includes a cylindrical first guide rod 2 passing through the first support plate 9 and the second support plate 10, the first guide rod 2 being limited between the first support plate 9 and the second support plate 10; a guide block 3 is sleeved on the middle surface of the first guide rod 2; stop flanges 6 located at both ends of the guide block 3 are sleeved on the surface of the first guide rod 2, the two stop flanges 6 being fixedly connected to the two sides of the guide block 3 respectively; the part of the guide block 3 away from the first guide rod 2 is fixedly connected to the fixed seat 1 on the outer cylinder of the turbine equipment;
[0007] The second adjustment mechanism includes a flat, round second guide rod 11 that passes through the third support plate 17 and the fourth support plate 18. The second guide rod 11 is limited between the third support plate 17 and the fourth support plate 18. The upper and lower sides of the second guide rod 11 are respectively provided with an upper tangent and a lower tangent, which are parallel to each other. An L-shaped upper guide plate 4 and a rectangular lower guide plate 5 are respectively provided on the upper and lower tangent surfaces of the second guide rod 11. The parts of the upper guide plate 4 and the lower guide plate 5 that are away from the part that is movably connected to the second guide rod 11 are fixedly connected to the fixed seat 1 on the turbine housing.
[0008] The central axes of the first guide rod 2 and the second guide rod 11 are equidistant from the horizontal center line of the outer cylinder of the turbine equipment.
[0009] A self-lubricating bushing 8 is provided between the inner wall of the guide block 3 and the first guide rod 2, and is sleeved on the first guide rod 2.
[0010] The upper and lower cut surfaces of the second guide rod 11 are each provided with a self-lubricating plate 7, and the two self-lubricating plates 7 are fixedly connected to the upper guide plate 4 and the lower guide plate 5 respectively.
[0011] A first gap x1 is left between the upper cut surface of the second guide rod 11 and the upper guide plate 4, or a second gap x2 is left between the lower cut surface of the second guide rod 11 and the lower guide plate 5, or a first gap x1 is left between the upper cut surface of the second guide rod 11 and the upper guide plate 4, while a second gap x2 is left between the lower cut surface of the second guide rod 11 and the lower guide plate 5.
[0012] Both ends of the first guide rod 2 and the second guide rod 11 are provided with locking nuts 12, which respectively limit the first guide rod 2 between the first support plate 9 and the second support plate 10, and limit the second guide rod 11 between the third support plate 17 and the fourth support plate 18;
[0013] Alternatively, one end of the first guide rod 2 and the second guide rod 11 are both machined with an integrally formed disc, and the other end is provided with a locking nut 12, which respectively limits the first guide rod 2 between the first support plate 9 and the second support plate 10, and limits the second guide rod 11 between the third support plate 17 and the fourth support plate 18.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This invention utilizes cylindrical first guide rods and flattened oval second guide rods symmetrically distributed along the axial direction of the turbine's central cylinder to provide limiting and guiding sliding. This satisfies the axial movement requirements while limiting the vibration amplitude of the central cylinder during unit operation. Furthermore, when the thermal expansion deformation of the central cylinder increases, the gap between the cylindrical first guide rod and the support plate decreases. Simultaneously, the thermal expansion deformation stroke along both sides of the central cylinder is constrained to the axial movement direction of the flattened oval second guide rod. The gaps formed by the second guide rod and the upper and lower guide plates meet the thermal expansion requirements, absorbing some of the thermal expansion generated during the operation of the central cylinder, reducing the stress caused by thermal expansion, and thus preventing the central cylinder's thermal expansion movement from being obstructed. This solves the technical problem of the central cylinder's thermal expansion deformation causing obstructed movement, affecting the inability to adjust the stator blade angle, leading to decreased unit performance, unit vibration, and abnormal temperature. Attached Figure Description
[0016] Figure 1 A front view of the first adjusting mechanism of the support adjusting device for turbine equipment provided by this utility model.
[0017] Figure 2 A top view of the first adjusting mechanism of the support adjusting device for turbine equipment provided by this utility model.
[0018] Figure 3 The front view of the second adjustment mechanism of the support adjustment device for turbine equipment provided by this utility model.
[0019] Figure 4 A top view of the second adjustment mechanism of the support adjustment device for turbine equipment provided by this utility model.
[0020] In the figure: fixed seat 1, first guide rod 2, guide block 3, upper guide plate 4, lower guide plate 5, stop flange 6, self-lubricating plate 7, bushing 8, first support plate 9, second support plate 10, second guide rod 11, locking nut 12, tapered pin 13, first bolt 14, second bolt 15, screw 16, first support plate 17, second support plate 18. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings.
[0022] like Figures 1-4 As shown, a support adjustment device for a turbine is located between the outer cylinder and the middle cylinder of the turbine. It is used to support the middle cylinder and perform axial guidance control on the middle cylinder during operation, reducing the vibration of the middle cylinder in all directions to protect the safe operation of the turbine. It includes a first adjustment mechanism and a second adjustment mechanism arranged symmetrically along the axial direction of the turbine. The first adjustment mechanism and the second adjustment mechanism are both installed on the working fluid inlet side and the working fluid outlet side of the turbine and are fixedly connected to the fixed seat 1 on the outer cylinder of the turbine. The first adjustment mechanism passes through the space between the first support plate 9 and the second support plate 10, and the second adjustment mechanism passes through the space between the third support plate 17 and the fourth support plate 18. The first support plate 9, the second support plate 10, the third support plate 17 and the fourth support plate 18 are all fixedly connected to the middle cylinder.
[0023] like Figure 1 and Figure 2 As shown, the first adjusting mechanism includes a cylindrical first guide rod 2 passing through the first support plate 9 and the second support plate 10. Both ends of the first guide rod 2 are provided with locking nuts 12, which limit the first guide rod 2 between the first support plate 9 and the second support plate 10. The first guide rod 2 is clearance-fitted with the first support plate 9 and the second support plate 10 respectively. A guide block 3 is sleeved on the middle surface of the first guide rod 2. A self-lubricating bushing 8 is sleeved on the first guide rod 2 between the inner wall of the guide block 3 and the first guide rod 2. When the cylinder moves axially... The first guide rod 2 slides in the guide block 3. The self-lubricating bushing 8, preferably made of Du material, reduces the frictional resistance between the first guide rod 2 and the inner wall of the guide block 3. The surface of the first guide rod 2 is fitted with stop flanges 6 at both ends of the guide block 3. The two stop flanges 6 are fixedly connected to the two sides of the guide block 3 by the second bolts 15. The part of the guide block 3 away from the first guide rod 2 is fixedly connected to the fixed seat 1 on the outer cylinder of the turbine equipment by two tapered pins 13 and three first bolts 14. The tapered pins 13 are pressed and locked by the screw plugs.
[0024] like Figure 3 and Figure 4As shown, the second adjustment mechanism includes a flat, round second guide rod 11 that passes through the third support plate 17 and the fourth support plate 18. The upper and lower sides of the second guide rod 11 are respectively provided with an upper tangent and a lower tangent, which are parallel. An L-shaped upper guide plate 4 and a rectangular lower guide plate 5 are respectively provided on the upper and lower tangent surfaces of the second guide rod 11. Self-lubricating plates 7, preferably Du plates, are provided on the surfaces of both the upper and lower tangent surfaces of the second guide rod 11. The two self-lubricating plates 7 are fixedly connected to the upper guide plate 4 and the lower guide plate 5 respectively by screws 16. When the cylinder moves axially, it drives the second guide rod 11 between the upper guide plate 4 and the lower guide plate 5. The sliding mechanism, through the two self-lubricating plates 7, reduces the frictional resistance between the second guide rod 11 and the upper guide plate 4 and the lower guide plate 5; both ends of the second guide rod 11 are provided with locking nuts 12, which limit the second guide rod 11 between the third support plate 17 and the fourth support plate 18, and the second guide rod 11 is clearance-fitted with the third support plate 17 and the fourth support plate 18 respectively; the parts of the upper guide plate 4 and the lower guide plate 5 that are away from the parts that are movably connected to the second guide rod 11 are fixedly connected to the fixed seat 1 on the turbine equipment shell by providing two tapered pins 13 and three first bolts 14, and the tapered pins 13 are pressed and locked by screw plugs.
[0025] A first gap x1 is left between the upper tangent surface of the second guide rod 11 and the upper guide plate 4, and a second gap x2 is left between the lower tangent surface of the second guide rod 11 and the lower guide plate 5, and the following conditions are met:
[0026] If the first gap x1 is 0.25-0.75mm, then the second gap x2 is 0.
[0027] If the second gap x2 is 0.25-0.75mm, then the first gap x1 is 0.
[0028] If neither the first gap x1 nor the first gap x1 is 0, then the sum of the first gap x1 and the first gap x1 is 0.25-0.75mm.
[0029] The distance between the central axis of the first guide rod 2 and the second guide rod 11 and the horizontal center line of the outer cylinder of the turbine is equal. This ensures that when the middle cylinder moves axially, the magnitude and direction of the force and torque on the first guide rod 2 and the second guide rod 11 are the same. This further ensures that the first guide rod 2 and the second guide rod 11 will not flip over randomly during the sliding process along the axial direction of the middle cylinder. This can better limit the vibration amplitude of the middle cylinder during the operation of the unit and make it move axially.
[0030] In another embodiment of the present invention, one end of the first guide rod 2 and the second guide rod 11 are both machined with an integrally formed disc, and the other end is provided with a locking nut 12. The first guide rod 2 is limited between the first support plate 9 and the second support plate 10 by a single locking nut 12, and the second guide rod 11 is limited between the third support plate 17 and the fourth support plate 18.
[0031] To ensure the normal and safe operation of the turbine unit, during turbine operation, the central cylinder undergoes thermal expansion and deforms outwards, moving away from the unit's center. The central cylinder moves axially via control equipment and systems on the outer side of the outer cylinder, thereby driving the first guide rod 2 and the second guide rod 11 located on both sides of the central cylinder to move axially. At this time, the outward thermal expansion deformation of the central cylinder is constrained by the axial movement direction of the first guide rod 2 and the second guide rod 11. As the amount of thermal expansion deformation of the central cylinder increases, the gap between the first guide rod 2 and the first support plate 9 and the second support plate 10 decreases. Simultaneously, the axial thermal expansion deformation along both sides of the central cylinder is constrained by the axial movement direction of the second guide rod 11 located on the other side of the central cylinder. The gap formed by the second guide rod 11 and the upper guide plate 4 and / or the lower guide plate 5 satisfies the thermal expansion requirements, absorbing some of the thermal expansion generated during turbine operation, reducing the stress caused by thermal expansion, and thus limiting the direction of thermal expansion deformation of the central cylinder during unit operation. This prevents the central cylinder from moving due to thermal expansion, thus hindering the adjustment of the unit's stator blade angle, leading to problems such as decreased unit performance, increased unit temperature, and unit vibration and noise.
Claims
1. A support adjustment device for a turbine, located between the outer cylinder and the middle cylinder of the turbine, characterized in that: The device includes a first adjustment mechanism and a second adjustment mechanism arranged symmetrically along the axis of the central cylinder of the turbine. The first adjustment mechanism and the second adjustment mechanism are both installed on the working fluid inlet side and the working fluid outlet side of the turbine and are fixedly connected to the fixed seat (1) on the outer cylinder of the turbine. The first adjustment mechanism passes through the first support plate (9) and the second support plate (10), and the second adjustment mechanism passes through the third support plate (17) and the fourth support plate (18). The first support plate (9), the second support plate (10), the third support plate (17) and the fourth support plate (18) are all fixedly connected to the central cylinder.
2. The support adjustment device for a turbine according to claim 1, characterized in that: The first adjustment mechanism includes a cylindrical first guide rod (2) that passes through the first support plate (9) and the second support plate (10), and the first guide rod (2) is limited between the first support plate (9) and the second support plate (10); a guide block (3) is sleeved on the middle surface of the first guide rod (2); a stop flange (6) located at both ends of the guide block (3) is sleeved on the surface of the first guide rod (2), and the two stop flanges (6) are fixedly connected to the two sides of the guide block (3) respectively; the part of the guide block (3) that is movably connected to the first guide rod (2) is fixedly connected to the fixed seat (1) on the outer cylinder of the turbine equipment; The second adjustment mechanism includes a flat, round second guide rod (11) that passes through the third support plate (17) and the fourth support plate (18). The second guide rod (11) is limited between the third support plate (17) and the fourth support plate (18). The upper and lower sides of the second guide rod (11) are respectively provided with an upper tangent and a lower tangent, which are parallel. An L-shaped upper guide plate (4) and a rectangular lower guide plate (5) are respectively provided on the upper and lower tangent of the second guide rod (11). The upper guide plate (4) and the lower guide plate (5) are fixedly connected to the fixed seat (1) on the turbine housing, away from the part of the block that is movably connected to the second guide rod (11).
3. The support adjustment device for a turbine according to claim 2, characterized in that: The central axes of the first guide rod (2) and the second guide rod (11) are equidistant from the horizontal center line of the outer cylinder of the turbine equipment.
4. The support adjustment device for a turbine according to claim 2, characterized in that: A self-lubricating bushing (8) is provided between the inner wall of the guide block (3) and the first guide rod (2) and is sleeved on the first guide rod (2).
5. A support adjustment device for a turbine according to claim 2, characterized in that: The upper and lower cut surfaces of the second guide rod (11) are provided with self-lubricating plates (7), and the two self-lubricating plates (7) are fixedly connected to the upper guide plate (4) and the lower guide plate (5) respectively.
6. A support adjustment device for a turbine according to claim 2 or 5, characterized in that: A first gap x1 is left between the upper cut surface of the second guide rod (11) and the upper guide plate (4), or a second gap x2 is left between the lower cut surface of the second guide rod (11) and the lower guide plate (5), or a first gap x1 is left between the upper cut surface of the second guide rod (11) and the upper guide plate (4), while a second gap x2 is left between the lower cut surface of the second guide rod (11) and the lower guide plate (5).
7. A support adjustment device for a turbine according to claim 2, characterized in that: Both ends of the first guide rod (2) and the second guide rod (11) are provided with locking nuts (12), which respectively limit the first guide rod (2) between the first support plate (9) and the second support plate (10), and limit the second guide rod (11) between the third support plate (17) and the fourth support plate (18); Alternatively, one end of the first guide rod (2) and the second guide rod (11) is machined with an integrally formed disc, and the other end is provided with a locking nut (12), which respectively limits the first guide rod (2) between the first support plate (9) and the second support plate (10), and limits the second guide rod (11) between the third support plate (17) and the fourth support plate (18).