Sealing baffle structure for steam turbine

Abstract

The utility model discloses a sealing baffle plate structure for a steam turbine, which comprises two groups of baffle plate mechanisms, the side surfaces of the two groups of baffle plate mechanisms are butted and spliced, and the baffle plate mechanisms are provided with connecting holes which are used for installing a device on the end surface of the steam turbine. A first connecting block and a second connecting block are installed on the two sides of the baffle mechanism respectively, a first connecting shaft is installed on the side face of the first connecting block, a second connecting shaft is installed on the second connecting block, and a pressure relief pipe is installed on the baffle mechanism. Compared with the prior art, the baffle plate mechanisms are arranged, the two baffle plate bodies are positioned and installed through the positioning pins and the slots, then the first connecting blocks on the two sides are installed through the first connecting shafts, the second connecting blocks are installed through the second connecting shafts, and splicing of the baffle plate mechanisms on the two sides is completed; the pressure relief pipe is used for relieving pressure of the steam turbine, and the baffle mechanism is very flexible to use.

Description

Technical Field

[0001] This utility model relates to the field of sealing baffle technology, and in particular to a sealing baffle structure for steam turbines. Background Technology

[0002] Steam turbine sealing baffles generally refer to components in a steam turbine used to seal and isolate steam in different pressure zones. They mainly include sealing structures such as diaphragm seals. These sealing baffles effectively prevent steam leakage, ensuring the normal operation and high efficiency of the steam turbine.

[0003] Existing turbine sealing baffles are composed of two separate baffles spliced ​​together, with bearing bushes used to improve the sealing performance of the connection. However, after the existing turbine sealing baffles are installed, their sealing performance cannot be adjusted as needed, which has certain shortcomings. Therefore, we propose a sealing baffle structure for turbines. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealing baffle structure for steam turbines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sealing baffle structure for a steam turbine includes two sets of baffle mechanisms joined together side-to-side. Each baffle mechanism has a connecting hole for mounting on the end face of the steam turbine. A first connecting block and a second connecting block are respectively installed on both sides of each baffle mechanism. A first connecting shaft is installed on the side of the first connecting block, and a second connecting shaft is installed on the second connecting block. A pressure relief pipe is installed on each baffle mechanism, and a bearing mechanism is installed between the two baffle mechanisms.

[0007] Preferably, the first connecting shaft fixes the first connecting blocks on both sides with threads, and the second connecting shaft fixes the second connecting blocks on both sides with threads.

[0008] Preferably, the number of pressure relief pipes is several groups, the pressure relief pipes pass through the baffle mechanism, and a solenoid valve is installed inside the pressure relief pipes.

[0009] Preferably, the baffle mechanism includes a baffle body, and a positioning pin and a slot are installed on the side of the baffle body. The positioning pin and slot are used for positioning and installation between two baffle bodies, and the bearing mechanism is installed between the two baffle bodies.

[0010] Preferably, the slot has a through hole on its side, a hydraulic damper is installed on the back of the slot, the output shaft of the hydraulic damper is inserted into the slot and connected to a movable plate, a support spring is installed between the movable plate and the slot, and the support spring is sleeved on the output shaft of the hydraulic damper.

[0011] Preferably, the bearing mechanism includes a bearing located between two baffle bodies. The bearing is a hollow cylindrical structure. A groove is provided on the outer wall of the bearing for engaging with the baffle body. A sealing ring is installed inside the bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model sets up a baffle mechanism, uses positioning pins and slots to complete the positioning and installation between two baffle bodies, then uses a first connecting shaft to install the first connecting blocks on both sides, and uses a second connecting shaft to install the second connecting blocks, thus completing the splicing of the baffle mechanism on both sides. In actual use, the pressure relief pipe is used to relieve pressure on the steam turbine, and the baffle mechanism is very flexible in use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a sealing baffle structure for a steam turbine proposed in this utility model;

[0015] Figure 2 for Figure 1 Cross-sectional view of the central bearing bush;

[0016] Figure 3 for Figure 1 A sectional view of the middle baffle mechanism.

[0017] In the figure: 1. Baffle mechanism, 11. Baffle body, 12. Positioning pin, 13. Slot, 14. Through hole, 15. Hydraulic damper, 16. Movable plate, 17. Support spring, 2. Connecting hole, 3. First connecting block, 4. First connecting shaft, 5. Second connecting block, 6. Second connecting shaft, 7. Pressure relief pipe, 8. Bearing mechanism, 81. Bearing, 82. Slot, 83. Sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-3A sealing baffle structure for a steam turbine includes two sets of baffle mechanisms 1, which are joined together side-by-side. Each baffle mechanism 1 has a connecting hole 2 for mounting on the end face of the steam turbine. A first connecting block 3 and a second connecting block 5 are respectively installed on both sides of each baffle mechanism 1. A first connecting shaft 4 is installed on the side of each first connecting block 3, and a second connecting shaft 6 is installed on each second connecting block 5. The first connecting shaft 4 secures the first connecting blocks 3 on both sides with threads, and the second connecting shaft 6 secures the second connecting blocks 5 on both sides with threads. Several sets of pressure relief pipes 7 are installed on each baffle mechanism 1, penetrating the baffle mechanism 1. A solenoid valve is installed inside each pressure relief pipe 7. A bearing mechanism 8 is installed between the two baffle mechanisms 1.

[0020] In one embodiment, the baffle mechanism 1 includes a baffle body 11. A positioning pin 12 and a slot 13 are mounted on the side of the baffle body 11. The positioning pin 12 and slot 13 are used for positioning and mounting between two baffle bodies 11. A bearing mechanism 8 is installed between the two baffle bodies 11. A through hole 14 is opened on the side of the slot 13. A hydraulic damper 15 is mounted on the back of the slot 13. The output shaft of the hydraulic damper 15 is inserted into the interior of the slot 13 and connected to a movable plate 16. A support spring 17 is installed between the movable plate 16 and the slot 13. The support spring 17 is sleeved on the output shaft of the hydraulic damper 15. The bearing mechanism 8 includes a bearing 81 located between two baffle bodies 11. The bearing 81 is a hollow cylindrical structure. A slot 82 is provided on the outer wall of the bearing 81 for engaging with the baffle body 11. A sealing ring 83 is installed inside the bearing 81. By setting up the baffle mechanism, the positioning and installation between the two baffle bodies are completed using positioning pins and slots. Then, the first connecting blocks on both sides are installed using the first connecting shaft, and the second connecting blocks are installed using the second connecting shaft, thus completing the splicing of the two baffle mechanisms. In actual use, the pressure relief pipe is used to relieve pressure on the steam turbine, and the baffle mechanism is very flexible in use.

[0021] In use, the two baffle mechanisms 1 are joined on the sides, specifically by inserting the positioning pins 12 in the baffle bodies 11 on both sides into the slots 13. Then, the two first connecting blocks 3 are locked by the first connecting shaft 4, and the second connecting shaft 6 locks the second connecting block 5. The bearing mechanism 8 is located in the two baffle bodies 11, so that the slots on the side of the bearing mechanism 8 are engaged with the baffle bodies 11. During installation, the baffle mechanism 1 is connected to the turbine through the connecting hole 2. The sealing ring 83 in the bearing mechanism 8 improves the sealing performance of the device during installation. During use, the pressure in the turbine is controlled by the pressure relief valve in the pressure relief pipe 7, which improves the ease of use.

[0022] In summary, compared with the prior art, this utility model sets up a baffle mechanism, uses positioning pins and slots to complete the positioning and installation between the two baffle bodies, and then uses the first connecting shaft to install the first connecting blocks on both sides, and the second connecting shaft to install the second connecting blocks, thus completing the splicing of the baffle mechanism on both sides. In actual use, the pressure relief pipe is used to relieve pressure on the steam turbine, and the baffle mechanism is very flexible in use.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seal baffle structure for a steam turbine comprising a baffle mechanism (1), characterized in that, The number of the baffle mechanism (1) is two groups, two groups of the baffle mechanism (1) side butt joint, the baffle mechanism (1) is provided with connecting hole (2), the connecting hole (2) is used for device installation in the end surface of steam turbine, both sides of the baffle mechanism (1) are provided with first connecting block (3) and second connecting block (5) respectively, the side of the first connecting block (3) is provided with first connecting shaft (4), the second connecting block (5) is provided with second connecting shaft (6), the baffle mechanism (1) is provided with pressure relief pipe (7), two baffle mechanism (1) is provided with bearing bush mechanism (8).

2. A seal bucket structure for a steam turbine as defined in claim 1, wherein The first connecting shaft (4) is fixed by thread on both sides of the first connecting block (3), and the second connecting shaft (6) is fixed by thread on both sides of the second connecting block (5).

3. A seal bucket structure for a steam turbine as defined in claim 1, wherein The number of the pressure relief pipe (7) is several groups, the pressure relief pipe (7) penetrates the baffle mechanism (1), and the electromagnetic valve is installed in the pressure relief pipe (7).

4. A seal bucket structure for a steam turbine as set forth in claim 1, characterized by The baffle mechanism (1) comprises a baffle body (11), the side of the baffle body (11) is provided with positioning pin (12) and slot (13), the positioning pin (12) and slot (13) are used for positioning installation between two baffle bodies (11), and the bearing bush mechanism (8) is installed between the two baffle bodies (11).

5. A seal bucket structure for a steam turbine as claimed in claim 4, wherein The side of the slot (13) is provided with through hole (14), the back of the slot (13) is provided with hydraulic damper (15), the output shaft of the hydraulic damper (15) is inserted into the inside of the slot (13) and is connected with movable plate (16), the support spring (17) is installed between the movable plate (16) and the slot (13), and the support spring (17) is sleeved on the output shaft of the hydraulic damper (15).

6. A seal bucket structure for a steam turbine as defined in claim 4 wherein, The bearing bush mechanism (8) comprises a bearing bush (81) between the two baffle bodies (11), the bearing bush (81) is a hollow cylindrical structure, the outer wall of the bearing bush (81) is provided with clamping groove (82), the clamping groove (82) is used for clamping on the baffle body (11), and the bearing bush (81) is provided with sealing ring (83) in the inside.

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