Bearing block welded structure

Abstract

The utility model relates to bearing seat welding structure, including seat body, inner casing, outer casing, baffle and setting first support beam, second support beam, third support beam, fourth support beam in proper order, first stirrup is provided between first support beam and second support beam, second stirrup is provided between second support beam and third support beam, third stirrup is provided between third support beam and fourth support beam, fourth stirrup is provided between second stirrup and baffle, the utility model discloses through setting first stirrup, second stirrup, third stirrup and fourth stirrup, make the rigidity of first support beam, second support beam, third support beam, fourth support beam and baffle greatly promote, and the stability is higher, in addition, first stirrup, second stirrup, third stirrup and fourth stirrup can limit the deformation of first support beam, second support beam, third support beam, fourth support beam and baffle, reduce deformation amount.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, and in particular to a bearing housing welding structure. Background Technology

[0002] The low-pressure exhaust cylinder of a steam turbine is the exhaust section of the low-pressure cylinder and is one of the largest and most complex components in the turbine. Its main task is to effectively guide the steam (exhaust steam) after it has completed its work into the condenser and create a highly efficient vacuum environment. During production, the upper and lower halves of the low-pressure exhaust cylinder are machined separately and then joined together by a flange on the split face.

[0003] The bearing housing is a crucial component of the lower half of the low-pressure afterburner cylinder in a steam turbine, used to support the rotor. The bearing housing, for example... Figure 1 and Figure 2 As shown, the structure includes a base 1, an inner shell 2, an outer shell 3, a partition 4, a first support beam 5, a second support beam 6, a third support beam 7, and a fourth support beam 8. The first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8 are arranged sequentially, with a gap between adjacent support beams. The base 1 is simultaneously welded to the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8. The partition 4 is welded to the base 1. The inner shell 2 and the outer shell 3 are located on both sides of the partition 4 and are symmetrical with respect to the partition 4. One end of the inner shell 2 is welded to the base 1, one side is welded to the partition 4, and the other side is welded to the second support beam 6 or the third support beam 7. One end of the outer shell 3 is welded to the base 1, one side is welded to the partition 4, and the other side is welded to the first support beam 5 or the fourth support beam 8.

[0004] Since the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8 are not connected to each other and have poor rigidity, they are prone to deformation during welding, which leads to a decrease in positional accuracy and affects the overall dimensional accuracy of the bearing housing. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a bearing housing welding structure that reduces welding deformation and improves the dimensional accuracy of the bearing housing after welding.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: a bearing seat welding structure, including a seat body, an inner shell, an outer shell, a partition plate, and a first support beam, a second support beam, a third support beam, and a fourth support beam arranged in sequence. The seat body is simultaneously welded to the first support beam, the second support beam, the third support beam, and the fourth support beam. One end of the partition plate is welded to the seat body. The inner shell and the outer shell are welded to both sides of the partition plate, and the two sides of the inner shell are respectively welded to the second support beam and the third support beam. The two sides of the outer shell are respectively welded to the first support beam and the fourth support beam.

[0007] A first tie rod is provided between the first support beam and the second support beam, a second tie rod is provided between the second support beam and the third support beam, a third tie rod is provided between the third support beam and the fourth support beam, and a fourth tie rod is provided between the second tie rod and the partition plate.

[0008] Furthermore, deformation monitoring elements are provided on the first, second, third, or fourth tie rods.

[0009] Furthermore, the deformation monitoring element is a laser displacement sensor.

[0010] Furthermore, the first, second, third, or fourth tie rod is provided with a mounting base, and the laser displacement sensor can be detachably installed on the mounting base.

[0011] Furthermore, the mounting base includes a fixed base body, on which a rotating base is provided, and the rotating base is connected to a locking component; the laser displacement sensor is mounted to the rotating base by bolts.

[0012] Furthermore, the first tie rod, the second tie rod, the third tie rod, and the fourth tie rod are all channel steel.

[0013] The beneficial effects of this utility model are as follows: By setting the first tie rod, the second tie rod, the third tie rod, and the fourth tie rod, the rigidity of the first support beam, the second support beam, the third support beam, the fourth support beam, and the partition plate is greatly improved, and the stability is higher. In addition, the first tie rod, the second tie rod, the third tie rod, and the fourth tie rod can limit the deformation of the first support beam, the second support beam, the third support beam, the fourth support beam, and the partition plate, and reduce the amount of deformation. Attached Figure Description

[0014] Figure 1 and Figure 2 This is a schematic diagram of the bearing housing;

[0015] Figure 3 This is a schematic diagram of the welding process for the base and partition.

[0016] Figure 4 This is a schematic diagram of the installation of the deformation monitoring element;

[0017] Figure 5 This is a schematic diagram after the inner shell has been welded;

[0018] Reference numerals: 1—Seat body; 2—Inner shell; 3—Outer shell; 4—Baffle; 5—First support beam; 6—Second support beam; 7—Third support beam; 8—Fourth support beam; 10—First tie rod; 11—Deformation monitoring element; 12—Mounting seat; 121—Fixed seat body; 122—Rotating seat; 123—Locking element; 20—Second tie rod; 30—Third tie rod; 40—Fourth tie rod. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] The bearing housing welding structure of this utility model, such as Figures 3 to 5 As shown, the structure includes a base 1, an inner shell 2, an outer shell 3, a partition 4, and a first support beam 5, a second support beam 6, a third support beam 7, and a fourth support beam 8 arranged sequentially. The base 1 is simultaneously welded to the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8. One end of the partition 4 is welded to the base 1. The inner shell 2 and the outer shell 3 are welded to both sides of the partition 4, and the two sides of the inner shell 2 are respectively welded to the second support beam 6 and the third support beam 7. The two sides of the outer shell 3 are respectively welded to the first support beam 5 and the fourth support beam 8.

[0021] A first tie rod 10 is provided between the first support beam 5 and the second support beam 6; a second tie rod 20 is provided between the second support beam 6 and the third support beam 7; a third tie rod 30 is provided between the third support beam 7 and the fourth support beam 8; and a fourth tie rod 40 is provided between the second tie rod 20 and the partition plate 4. Both ends of the first tie rod 10, the second tie rod 20, the third tie rod 30, and the fourth tie rod 40 are welded together. After the bearing housing is welded as a whole, the first tie rod 10, the second tie rod 20, the third tie rod 30, and the fourth tie rod 40 are then removed.

[0022] The first tie rod 10, the second tie rod 20, and the third tie rod 30 connect the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8 into a whole, improving the rigidity of the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8, and preventing random deformation of the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8 during welding. Furthermore, the first tie rod 10, the second tie rod 20, and the third tie rod 30 support and limit the deformation of the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8, which helps to reduce deformation and ensure dimensional accuracy. Similarly, the fourth tie rod 40 improves the stability of the partition 4 and limits its deformation.

[0023] During welding, first, layout lines are drawn on a horizontal, rigid platform. This platform can be a thick and heavy steel plate, fixed to the ground. The platform is then leveled to ensure its upper surface has a high degree of horizontality. After drawing the lines, the first support beam 5, second support beam 6, third support beam 7, and fourth support beam 8 are placed on the rigid platform according to the layout lines. Auxiliary tools are used to press these beams together to prevent movement. Next, the first tie rod 10 is welded between the first and second support beams 5 and 6, the second tie rod 20 is welded between the second and third support beams 6 and 7, and the third tie rod 30 is welded between the third and fourth support beams 7 and 8.

[0024] Next, assemble the base 1 onto the first support beam 5, the second support beam 6, the third support beam 7, and the fourth support beam 8. Assemble the partition plate 4 onto the base 1 and perform tack welding. Then, weld the fourth tie rod 40 to the end of the partition plate 4 furthest from the base 1. Finally, perform the formal welding, as follows: Figure 3 As shown.

[0025] After the base 1 and partition 4 are welded, the inner shell 2 is assembled onto both sides of the partition 4. First, tack welding is performed, followed by the final welding. Figure 5 As shown. After the inner shell 2 is welded, the outer shell 3 is assembled onto both sides of the partition 4. First, tack welding is performed, followed by the final welding, as shown. Figure 1 As shown.

[0026] After all welding is completed, cut off the first tie rod 10, the second tie rod 20, the third tie rod 30 and the fourth tie rod 40, and grind the welded tie rod positions smooth.

[0027] To accurately monitor welding deformation, deformation monitoring elements 11 are installed on the first tie rod 10, the second tie rod 20, the third tie rod 30, or the fourth tie rod 40. The deformation monitoring elements 11 can be flexibly positioned. First, easily deformable areas are determined based on experience or experiments, and then the deformation monitoring elements 11 are installed at appropriate locations. One or more deformation monitoring elements 11 can be installed as needed. The monitoring elements 11 can be installed on one tie rod or multiple tie rods to ensure that the deformation monitoring elements 11 can monitor the deformation of one or more easily deformable areas.

[0028] In this invention, the deformation monitoring element 11 is a laser displacement sensor. The laser displacement sensor can detect the distance from itself to the easily deformable area, and judge the amount of deformation of the easily deformable area based on the change in distance. When the amount of deformation is large, the welding process can be adjusted in time, or the welded seam can be stress-relieved.

[0029] To facilitate the installation of laser displacement sensors, such as Figure 4 As shown, mounting bases 12 are provided on the first tie rod 10, the second tie rod 20, the third tie rod 30, and the fourth tie rod 40. The laser displacement sensor is detachably mounted on the mounting base 12. To facilitate adjustment of the detection direction of the laser displacement sensor, ensuring that the detection direction is towards the easily deformable area, the mounting base 12 includes a fixed base body 121, on which a rotating base 122 is provided, and the rotating base 122 is connected to a locking member 123. The laser displacement sensor is mounted to the rotating base 122 by bolts. The locking member 123 can be a screw, which locks the rotating base 122 in place to prevent it from rotating automatically. When it is necessary to adjust the detection orientation of the laser displacement sensor, the locking member 123 can be loosened, and the rotating base 122 can be rotated to rotate the laser displacement sensor. When the laser displacement sensor is aligned with the easily deformable area, the rotation of the rotating base 122 is stopped, and the locking member 123 is used to lock the rotating base 122 again to prevent it from rotating automatically and to ensure the stability of adjusting the laser displacement sensor.

[0030] In this utility model, the first tie rod 10, the second tie rod 20, the third tie rod 30 and the fourth tie rod 40 are all channel steel.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bearing housing welded structure, comprising a housing body (1), an inner housing (2), an outer housing (3), a partition plate (4), and a first support beam (5), a second support beam (6), a third support beam (7), and a fourth support beam (8) arranged sequentially, wherein the housing body (1) is simultaneously welded to the first support beam (5), the second support beam (6), the third support beam (7), and the fourth support beam (8), one end of the partition plate (4) is welded to the housing body (1), the inner housing (2) and the outer housing (3) are welded to both sides of the partition plate (4), and the two sides of the inner housing (2) are respectively welded to the second support beam (6) and the third support beam (7), and the two sides of the outer housing (3) are respectively welded to the first support beam (5) and the fourth support beam (8); characterized in that: A first tie rod (10) is provided between the first support beam (5) and the second support beam (6), a second tie rod (20) is provided between the second support beam (6) and the third support beam (7), a third tie rod (30) is provided between the third support beam (7) and the fourth support beam (8), and a fourth tie rod (40) is provided between the second tie rod (20) and the partition plate (4).

2. The bearing housing welding structure as described in claim 1, characterized in that: Deformation monitoring elements (11) are provided on the first tie rod (10), the second tie rod (20), the third tie rod (30) or the fourth tie rod (40).

3. The bearing housing welding structure as described in claim 2, characterized in that: The deformation monitoring element (11) is a laser displacement sensor.

4. The bearing housing welding structure as described in claim 3, characterized in that: The first tie rod (10), the second tie rod (20), the third tie rod (30) or the fourth tie rod (40) are provided with mounting bases (12), and the laser displacement sensor is detachably installed on the mounting bases (12).

5. The chock weldment of claim 4, wherein: The mounting base (12) includes a fixed base (121), on which a rotating base (122) is provided, and the rotating base (122) is connected to a locking member (123); the laser displacement sensor is mounted on the rotating base (122) by bolts.

6. The carrier weldment of claim 1, wherein: The first tie rod (10), the second tie rod (20), the third tie rod (30) and the fourth tie rod (40) are all channel steel.

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