Steam turbine pit center measuring and adjusting device

Abstract

The utility model discloses a steam turbine pit center measuring and adjusting device which comprises a photoelectric sensor and a micrometer piece connected with the photoelectric sensor, a hollow top cylinder is arranged at one end of the micrometer piece far away from the photoelectric sensor, and a top cover is arranged at one end of the top cylinder far away from the micrometer piece in a sliding mode in the length direction of the top cylinder. A top cylinder is arranged on the top cover, a moving area for a steel wire to penetrate through is formed between the top cylinder and the top cover, a positioning groove is formed in the side, facing the top cylinder, of the top cover, and an irradiation assembly capable of irradiating the positioning groove is arranged in the top cylinder. Different persons or different contact forces are easy to drive the measuring head of the micrometer to contact the steel wire in the measuring process, so that the steel wire shakes and deviates to a certain extent, and in the measuring process, the persons are not easy to check whether the measuring head of the micrometer drives the steel wire too much or not, so that the measuring size error is caused. According to the utility model, the measuring head of the micrometer does not need to be in direct contact with the steel wire, so that personnel can conveniently observe whether offset is caused during measurement.

Description

Technical Field

[0001] This utility model relates to the technical field of steam turbine maintenance equipment, and in particular to a steam turbine recess center measurement and adjustment device. Background Technology

[0002] The turbine recess center is a crucial data point that must be measured during turbine installation and maintenance. It allows for monitoring and analysis of cylinder deformation and displacement, and adjustment of diaphragm positions. In actual measurement, a steel wire is used as a simulated axis of the turbine rotor. The steel wire is positioned with the bearing centers at both ends of the turbine rotor as the reference point. The circumferential surfaces of the turbine's shaft seal and diaphragm components are measured using the steel wire. Based on the measurement data, adjustments are made to these components to ensure that the circumferential centers of each component are within the required range, thus preventing friction between the moving and stationary parts of the turbine.

[0003] Traditionally, when measuring the recess size between the steel wire and the cylinder diaphragm, a person manually holds a photoelectric edge finder equipped with an inside micrometer. The photoelectric edge finder contacts the recess, and the person uses the inside micrometer to adjust the position of the photoelectric edge finder relative to the recess. The measuring head of the inside micrometer makes direct contact with the steel wire.

[0004] However, due to the flexibility of the steel wire and the varying stability of human hands, when the micrometer measuring head comes into contact with the steel wire, different people or different contact forces can easily cause the steel wire to wobble and deviate when the micrometer measuring head comes into contact with the steel wire during the measurement process. Furthermore, during the measurement process, it is not easy for personnel to check whether the micrometer measuring head is excessively moving the steel wire, resulting in measurement errors. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a turbine recess center measurement and adjustment device.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a turbine recess center measurement and adjustment device, including a photoelectric sensor and a micrometer connected thereto, wherein a hollow top cylinder is provided at the end of the micrometer away from the photoelectric sensor, and a top cover is slidably provided at the end of the top cylinder away from the micrometer along its length direction, and an active area for steel wire to pass through is formed between the top cylinder and the top cover, a positioning groove is provided on the side of the top cover facing the top cylinder, and an illumination component that can illuminate the positioning groove is provided inside the top cylinder.

[0007] Preferably, the irradiation assembly includes a positioning plate disposed inside the top cylinder, an irradiation lamp disposed at its center, and a power supply unit electrically connected to the irradiation lamp. The input terminal and output terminal of the power supply unit are electrically connected to the positive and negative terminals of the irradiation lamp, respectively.

[0008] Preferably, the positive electrode of the illumination lamp is connected to the input terminal of the power supply unit via a conductive copper sheet. A through groove is provided on the top cylinder, and a driving block is slidably disposed inside the through groove and connected to the conductive copper sheet. One end of the driving block is located outside the top cylinder through the through groove, and a pushing block is provided at the other end of the driving block located outside the top cylinder. When driven, the driving block can move the conductive copper sheet away from the input terminal of the power supply unit.

[0009] Preferably, a reflector is provided on the side of the positioning plate facing the top cover, and a focusing lens is provided on the side of the reflector away from the positioning plate.

[0010] Preferably, a background plate is provided on the side of the top cover facing the top cylinder, and the background plate is white.

[0011] Preferably, the top cover is provided with a sliding plate at one end facing the top cylinder, and one end of the sliding plate is located inside the top cylinder and slidably connected thereto. A positioning fastener is screwed onto the top cylinder.

[0012] The beneficial effects of this utility model are as follows: By setting a hollow top cylinder on the micrometer piece and setting an irradiation component inside the top cylinder, a top cover is slidably set at one end of the top cylinder, and a positioning groove is opened on the top cover. A buffer zone for the steel wire to pass through is formed between the top cover and the top cylinder. Compared with the prior art, it is possible to measure the position of the recess of the turbine component without direct contact between the micrometer piece and the steel wire. This reduces the swaying and displacement of the steel wire caused by the operator when handling it, and avoids excessive measurement dimensional errors between the turbine component and the steel wire. The irradiation component projects the shadow of the steel wire in the buffer zone into the positioning groove, which makes it convenient for personnel to understand the position of the steel wire in the buffer zone for inspection and adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram illustrating the external structure of a photoelectric sensor when connected to a micrometer component in one embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram illustrating the external structure of the top cylinder in one embodiment of the present invention;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure viewed in cross section along its AA direction;

[0016] Figure 4 for Figure 3 Enlarged view of section B;

[0017] Figure 5 This is a schematic diagram illustrating the passage of a steel wire through a buffer zone in one embodiment of the present invention.

[0018] Reference numerals: 1. Photoelectric sensor; 2. Micrometer component; 3. Top cylinder; 4. Top cover; 5. Buffer zone; 6. Positioning groove; 7. Positioning plate; 8. Illumination lamp; 9. Power supply component; 10. Conductive copper sheet; 11. Through groove; 12. Moving block; 13. Pushing block; 14. Power supply component input end; 15. Positive electrode; 16. Negative electrode; 17. Power supply component output end; 18. Reflector; 19. Condensing lens; 20. Background plate; 21. Slide plate; 22. Positioning pin. Detailed Implementation

[0019] The following description is only a preferred embodiment of the present utility model. The scope of protection is not limited to this embodiment. All technical solutions that fall within the scope of the present utility model should be protected by the present utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present utility model should also be considered within the scope of protection of the present utility model.

[0020] It should be noted that in this document, relational terms such as first and second, or "connecting plate one, connecting plate two," are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0021] The directional terms mentioned in this embodiment, such as "up," "down," "left," and "right," are merely used to help those skilled in the art understand the relationships between various features or parts in conjunction with the accompanying drawings.

[0022] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 5As shown, a turbine recess center measurement and adjustment device includes a photoelectric sensor 1 and a micrometer 2 connected thereto. A hollow top cylinder 3 is provided at the end of the micrometer 2 furthest from the photoelectric sensor 1. A top cover 4 is slidably mounted on the upper end of the top cylinder 3 along its length. A sliding plate 21 is provided at the lower end of the top cover 4, extending into the interior of the top cylinder 3 and slidably connected to the inner wall of the top cylinder 3. A positioning screw is screwed onto the outer wall of the top cylinder 3 to secure the sliding plate 21, facilitating personnel to adjust and fix the position of the top cover 4. A rectangular positioning groove 6 is provided on the side of the top cover 4 facing the top cylinder 3, forming an active area between the top cover 4 and the top cylinder 3 for a steel wire to pass through. Furthermore, a positioning plate 7 is fixed inside the top cylinder 3, and an illumination lamp 8 is provided on the positioning plate 7. In this embodiment, the illumination lamp 8 is an LED lamp, which is energy-saving, long-lasting, environmentally friendly, flexible in design, and generates less heat than an incandescent lamp during the light emission process, thus reducing the requirements for the heat dissipation system. A power supply component 9 is provided inside the top cylinder 3 on the side of the positioning plate 7 away from the top cover 4. The positive electrode 15 and the negative electrode 16 of the illumination lamp 8 are electrically connected to the power supply component input terminal 14 and the power supply component output terminal 17, respectively. In this embodiment, the power supply component 9 adopts a technical component well known to those skilled in the art, which consists of a power socket and a battery installed inside it.

[0024] A through groove 11 is provided on the outer wall of the top cylinder 3. A driving block 12 is slidably arranged inside the through groove 11. A conductive copper sheet 10 is provided at one end of the driving block 12 located inside the top cylinder 3. The positive electrode 15 of the illumination lamp 8 is connected to the power input terminal 14 through the conductive copper sheet 10. A push block 13 is provided at one end of the driving block 12 located outside the top cylinder 3. The purpose of this is to facilitate personnel to indirectly push the driving block 12.

[0025] A horn-shaped reflector 18 is provided on the side of the positioning plate 7 facing the top cover 4, and a focusing lens 19 is provided on the side of the reflector 18 away from the positioning plate 7. The purpose is to concentrate the light so that it shines on the steel wire and forms a stable shadow at the positioning groove 6 of the top cover 4. A background plate 20 is provided on the side of the top cover 4 facing the top cylinder 3. The background plate 20 is attached to the outer wall of the top cover 4 and is also attached to the positioning groove 6. The background plate 20 is white in color so that the projected shadow is clearer and easier for personnel to see and understand.

[0026] When not in use, the lower side of the top cover 4 is attached to the upper side of the top cylinder 3, and the bottom end of the positioning screw is attached to the outer wall of the slide plate 21, so that the top cover 4 is in a limited state, the conductive copper sheet 10 faces the positive electrode 15 of the illumination lamp 8 and is not electrically connected to the power input terminal 14, so the illumination lamp 8 is in a non-illuminating state.

[0027] When personnel need to measure the size of the depression, first loosen the positioning screws and adjust the range of motion between the top cover 4 and the top cylinder 3 to allow the steel wire to pass through. Then tighten the positioning screws to position the top cover 4. Then slide the push block 13, which indirectly drives the conductive copper sheet 10 to move through the drive block 12. This allows the positive electrode 15 of the illumination lamp 8 to be electrically connected to the power input terminal 14 through the conductive copper sheet 10. The illumination lamp 8 is powered and emits light. The light is further concentrated by the condenser lens 19 onto the steel wire in the range of motion and leaves a shadow at the positioning groove 6 on the top cover 4. The positioning groove 6 serves as a reference. When personnel move the micrometer part 2, the shadow is kept within the positioning groove 6. Personnel can observe whether the shadow part is off the positioning groove 6 to determine the offset of the micrometer part 2. The top cover 4 does not need to directly contact the steel wire, avoiding the lack of a reference for personnel to determine whether the movement is off-center.

[0028] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A device for measuring and adjusting the center of a turbine recess, comprising a photoelectric sensor (1) and a micrometer connected thereto, Its features are, The micrometer component (2) has a hollow top cylinder (3) at the end away from the photoelectric sensor (1); The top cylinder (3) is slidably provided with a top cover (4) at the end away from the micrometer part (2) along its length direction, and an active area for steel wire to pass through is formed between the top cylinder (3) and the top cover (4); The top cover (4) is provided with a positioning groove (6) on the side facing the top cylinder (3), and the top cylinder (3) is provided with an irradiation component that can irradiate the positioning groove (6).

2. The turbine recess center measurement and adjustment device according to claim 1, characterized in that, The irradiation assembly includes a positioning plate (7) disposed inside the top cylinder (3), an irradiation lamp (8) disposed at its center, and a power supply unit (9) electrically connected to the irradiation lamp (8). The input end (14) and output end (17) of the power supply unit are electrically connected to the positive electrode (15) and negative electrode (16) of the irradiation lamp (8), respectively.

3. The turbine recess center measurement and adjustment device according to claim 2, characterized in that, The positive electrode (15) of the illumination lamp (8) is connected to the input terminal (14) of the power supply unit through a conductive copper sheet (10). A through groove (11) is provided on the top cylinder (3). A driving block (12) is slidably arranged inside the through groove (11) and connected to the conductive copper sheet (10). One end of the driving block (12) is located outside the top cylinder (3) through the through groove (11), and a pushing block (13) is provided at the end of the driving block (12) located outside the top cylinder (3). When the driving block (12) is driven, it can drive the conductive copper sheet (10) away from the input terminal of the power supply unit (9).

4. The turbine recess center measurement and adjustment device according to claim 3, characterized in that, A reflector (18) is provided on the side of the positioning plate (7) facing the top cover (4), and a focusing lens (19) is provided on the side of the reflector (18) away from the positioning plate (7).

5. The turbine recess center measurement and adjustment device according to claim 1, characterized in that, The top cover (4) is provided with a background plate (20) on the side facing the top cylinder (3), and the background plate (20) is white.

6. The turbine recess center measurement and adjustment device according to claim 1, characterized in that, The top cover (4) is provided with a sliding plate (21) at one end facing the top cylinder (3). One end of the sliding plate (21) is located inside the top cylinder (3) and is slidably connected thereto. A positioning fastener (22) is screwed onto the top cylinder (3).

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