Steam turbine valve grinding device

Abstract

The utility model discloses a steam turbine valve grinding device which relates to the technical field of grinding and comprises a main shaft body, a limiting guide groove is formed in the surface of the main shaft body, an inner supporting column body is installed on the inner wall of the limiting guide groove in a sliding mode, a limiting guide ring is rotatably installed on the surface of the inner supporting column body, and a power supporting plate is fixedly installed on the surface of the limiting guide ring. According to the steam turbine valve grinding device, an operator can control a power thread sleeve to conduct thread adjusting movement on the surface of the main shaft body, so that the power thread sleeve drives an auxiliary supporting ring to synchronously descend, then the auxiliary supporting ring drives a power supporting plate to push a grinding supporting plate to conduct adjustment, and at the moment, the angle between the grinding supporting plate and the auxiliary supporting ring is adjusted; therefore, the grinding supporting plate can drive the grinding sand body to be attached to the steam turbine valve of the matched model, the device can conduct attaching and grinding operation on the steam turbine valve, and it is guaranteed that the steam turbine valves of different models have the flexibility of matched use when being ground through the mode.

Description

Technical Field

[0001] This utility model relates to the field of grinding technology, and in particular to a steam turbine valve grinding device. Background Technology

[0002] The sealing of the main steam valve seat plays a crucial role in the operation of the steam turbine. When the main steam valve seat seal fails, it needs to be ground to enable it to reseal.

[0003] Most existing turbine valve grinding devices offer convenient grinding capabilities through their rapid grinding operation. However, some devices can only be used for grinding a single model and cannot be adjusted to fit different models. This results in limitations in the application of some turbine valve grinding devices, such as limited applicability. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to solve the problems raised in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steam turbine valve grinding device, comprising a main shaft, a limiting guide groove formed on the surface of the main shaft, an inner support column slidably mounted on the inner wall of the limiting guide groove, a limiting guide ring rotatably mounted on the surface of the inner support column, a power support plate fixedly mounted on the surface of the limiting guide ring, a power support column fixedly mounted on the end of the power support plate away from the limiting guide ring, a grinding support plate rotatably mounted on the surface of the power support column, and grinding sand provided on the surface of the grinding support plate.

[0006] Preferably, a positioning guide ring is fixedly installed on the surface of the main shaft, a positioning support is rotatably installed on the inner side of the positioning guide ring, and the surface of the positioning support is fixedly installed on the surface of the power support.

[0007] Preferably, a power threaded sleeve is threaded onto the surface of the main shaft, an auxiliary support ring is rotatably mounted on the inner side of the power threaded sleeve, and an auxiliary ball is fixedly mounted on the surface of the power threaded sleeve.

[0008] Preferably, an auxiliary support plate is fixedly installed on the surface of the auxiliary support ring, and the side of the auxiliary support plate away from the auxiliary support ring is fixedly installed on the surface of the inner support body.

[0009] Preferably, an adhesive is bonded to the surface of the grinding support plate, and the surface of the grinding sand is bonded to the surface of the grinding support plate by the adhesive.

[0010] Preferably, the number of grinding support plates is two sets, and the structures of the two sets of grinding support plates are the same.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The turbine valve grinding device allows the operator to control the power screw sleeve to move and adjust the thread on the surface of the main shaft. The power screw sleeve drives the auxiliary support ring to descend synchronously, and the auxiliary support ring drives the power support plate to push the grinding support plate for adjustment. At this time, the angle between the grinding support plate and the auxiliary support ring is adjusted, so the grinding support plate will drive the grinding sand to fit with the turbine valve of the appropriate model. Thus, the device can perform fitting grinding operation on the turbine valve. This method ensures the flexibility of using different models of turbine valves for grinding, improves the limitation of traditional grinding support plates that can only grind pre-formed turbine valves, and improves the ease of use of the device for adapting and adjusting turbine valves. At the same time, it improves the practicality of the device. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 This is a schematic diagram of the structure of a steam turbine valve grinding device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the planar structure of a steam turbine valve grinding device according to the present invention;

[0016] Figure 3 This is a schematic diagram of the main shaft of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the grinding support plate of this utility model.

[0018] Reference numerals in the attached drawings: 1. Main shaft; 2. Limiting guide groove; 3. Limiting guide ring; 4. Inner support column; 5. Power support plate; 6. Power support column; 7. Grinding support plate; 8. Positioning guide ring; 9. Positioning support column; 10. Power screw sleeve; 11. Auxiliary support ring; 12. Auxiliary support plate; 13. Auxiliary ball; 14. Grinding sand; 15. Adhesive. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a steam turbine valve grinding device, including a main shaft 1, a limiting guide groove 2 is formed on the surface of the main shaft 1, an inner support 4 is slidably installed on the inner wall of the limiting guide groove 2, a limiting guide ring 3 is rotatably installed on the surface of the inner support 4, and a power support plate 5 is fixedly installed on the surface of the limiting guide ring 3. The function of the limiting guide ring 3 is to assist the power support plate 5 and the inner support 4 in adjusting and adapting to each other when the power support plate 5 is rotated and adjusted.

[0024] Furthermore, a power support 6 is fixedly installed at the end of the power support plate 5 away from the limiting guide ring 3. A grinding support plate 7 is rotatably installed on the surface of the power support 6. A positioning guide ring 8 is fixedly installed on the surface of the main shaft 1. A positioning support 9 is rotatably installed on the inner side of the positioning guide ring 8. The surface of the positioning support 9 is fixedly installed on the surface of the power support 6. When the power support plate 5 descends at the main shaft 1, the rotation adjustment between the power support plate 5 and the grinding support plate 7 through the power support 6, and the rotation between the grinding support plate 7 and the positioning guide ring 8 through the positioning support 9, can realize the adjustment of the tilt angle between the grinding support plate 7 and the main shaft 1, so that the device can fit the steam valves of different models for grinding.

[0025] Furthermore, a power threaded sleeve 10 is threaded onto the surface of the main shaft 1, and an auxiliary support ring 11 is rotatably mounted on the inner side of the power threaded sleeve 10. An auxiliary support plate 12 is fixedly mounted on the surface of the auxiliary support ring 11, and the side of the auxiliary support plate 12 away from the auxiliary support ring 11 is fixedly mounted on the surface of the inner support body 4. An auxiliary ball 13 is fixedly mounted on the surface of the power threaded sleeve 10, and an adhesive body 15 is bonded to the surface of the grinding support plate 7. A grinding sand 14 is bonded to the surface of the adhesive body 15. When grinding of the turbine valve is required, the operator can control the power threaded sleeve 10 to move threadedly on the surface of the main shaft 1, thus the power threaded sleeve 10 drives the auxiliary support ring 1... Simultaneous descent of the auxiliary support ring 11 drives the power support plate 5 to adjust the grinding support plate 7. At this time, the angle between the grinding support plate 7 and the auxiliary support ring 11 is adjusted, so the grinding support plate 7 will drive the grinding sand 14 to fit against the turbine valve of the appropriate model. Thus, the device can perform fitting grinding operation on the turbine valve. This method ensures the flexibility of using different models of turbine valves for grinding, improves the limitation of the traditional grinding support plate 7 which can only grind pre-formed turbine valves, and improves the ease of use of the device for adapting and adjusting turbine valves, while also improving the practicality of the device.

[0026] Working principle: A steam turbine valve grinding device, when it is necessary to grind the steam turbine valve, the operator can control the power screw sleeve 10 to move and adjust the thread on the surface of the main shaft 1. Therefore, the power screw sleeve 10 drives the auxiliary support ring 11 to descend synchronously. Then, the auxiliary support ring 11 drives the power support plate 5 to push the grinding support plate 7 for adjustment. At this time, the angle between the grinding support plate 7 and the auxiliary support ring 11 is adjusted. Therefore, the grinding support plate 7 will drive the grinding sand 14 to fit with the steam turbine valve of the appropriate model, thus realizing the fitting grinding operation of the steam turbine valve by the device.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A steam turbine valve grinding device, comprising a main shaft (1), characterized in that: The main shaft (1) has a limiting guide groove (2) on its surface. An inner support body (4) is slidably installed on the inner wall of the limiting guide groove (2). A limiting guide ring (3) is rotatably installed on the surface of the inner support body (4). A power support plate (5) is fixedly installed on the surface of the limiting guide ring (3). A power support column (6) is fixedly installed at the end of the power support plate (5) away from the limiting guide ring (3). A grinding support plate (7) is rotatably installed on the surface of the power support column (6). A grinding sand (14) is provided on the surface of the grinding support plate (7).

2. The turbine valve grinding device according to claim 1, characterized in that: A positioning guide ring (8) is fixedly installed on the surface of the main shaft (1), and a positioning support (9) is rotatably installed on the inner side of the positioning guide ring (8). The surface of the positioning support (9) is fixedly installed on the surface of the power support (6).

3. The turbine valve grinding device according to claim 1, characterized in that: The main shaft (1) is threaded with a power sleeve (10), an auxiliary support ring (11) is rotatably installed on the inner side of the power sleeve (10), and an auxiliary ball (13) is fixedly installed on the surface of the power sleeve (10).

4. The turbine valve grinding device according to claim 3, characterized in that: An auxiliary support plate (12) is fixedly installed on the surface of the auxiliary support ring (11), and the side of the auxiliary support plate (12) away from the auxiliary support ring (11) is fixedly installed on the surface of the inner support body (4).

5. The turbine valve grinding device according to claim 1, characterized in that: An adhesive (15) is bonded to the surface of the grinding support plate (7), and the surface of the grinding sand (14) is bonded to the surface of the grinding support plate (7) by the adhesive (15).

6. The steam turbine valve grinding device according to claim 1, characterized in that: The number of grinding support plates (7) is two sets, and the structures on the two sets of grinding support plates (7) are the same.

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