A scraper for steam turbine maintenance

Abstract

The present application relates to a steam turbine maintenance tool technical field, especially for a kind of steam turbine maintenance scraper, including scraper shell, the inside of scraper shell is provided with blade adjusting mechanism, the front of scraper shell is connected with scraper handle;Blade adjusting mechanism includes gear rotationally connected at the inside center of scraper shell, the inside of scraper shell and located at the front and back of gear both sides are meshed and connected with rack, rack outside is equipped with scraper blade, gear top is provided with limit hole, gear top is connected with rotating rod, one end of rotating rod is connected with knob and penetrates the top of scraper shell, the outside of rotating rod and located at the top of scraper shell is slidably connected with limit cover, the bottom of limit cover is symmetrically provided with fixed insertion rod and is used in cooperation with limit hole;Light socket is connected on scraper handle.The blade of both sides scraper is adjusted easily, satisfies the operation to the steam seal tooth slot of different width, and high accuracy of operation.

Description

Technical Field

[0001] This invention relates to the field of steam turbine maintenance tools, and more particularly to a scraper for steam turbine maintenance. Background Technology

[0002] The steam seal teeth on the diaphragms and steam seal body of the steam turbine need to be precision machined to meet the radial flow clearance of the steam turbine. In actual operation, scraper tools are required to grind the grooves and teeth of the steam seal teeth.

[0003] However, the existing steam seal tooth scrapers used in steam turbine maintenance operations usually have a fixed structure, and the blade distance between the two sides of the scraper is not easy to adjust. This cannot meet the purpose of operating on steam seal tooth grooves of different widths. At the same time, insufficient lighting during in-depth maintenance affects the observation of maintenance workers and reduces the accuracy of operation.

[0004] Therefore, it is particularly important to design a turbine overhaul scraper to overcome the above-mentioned technical defects and improve its overall practicality. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a scraper for steam turbine maintenance, wherein the blades of the scrapers on both sides are easy to adjust, so as to meet the requirements of operating on steam seal tooth grooves of different widths, and the operation accuracy is high.

[0006] The present invention provides a scraper for turbine maintenance, including a scraper housing, a blade adjustment mechanism is provided inside the scraper housing, and a scraper handle is connected to the front of the scraper housing;

[0007] The blade adjustment mechanism includes a gear rotatably connected to the center of the inside of the scraper housing. Racks are meshed with the gear inside the scraper housing and on both the front and rear sides. Scraper blades are installed on the outer side of the racks. A limit hole is opened on the top of the gear. A rotating rod is connected to the top of the gear. A knob is connected to one end of the rotating rod that passes through the top of the scraper housing. A limit cover is slidably connected to the outer side of the rotating rod and on the top of the scraper housing. Fixed inserts that cooperate with the limit holes are symmetrically arranged on the bottom of the limit cover.

[0008] A lamp holder is connected to the scraper handle.

[0009] As a preferred embodiment of this invention, the left and right sides of the scraper housing are provided with rectangular grooves along the length of the scraper housing for the scraper blade to extend out.

[0010] As a preferred embodiment of this invention, a through hole is provided on the top of the scraper housing, corresponding to the positions of the rotating rod and the fixed insertion rod.

[0011] As a preferred embodiment of this invention, the limiting hole and the fixing rod are designed as a plug-in structure.

[0012] As a preferred embodiment of this invention, a connecting rod is connected to the middle section of the scraper handle, a connecting rod sleeve is rotatably sleeved on the outer side of the connecting rod, a finger ring buckle is installed on the outer side of the connecting rod sleeve, and a lighting lamp holder is connected to the outer side of the finger ring buckle.

[0013] As a preferred embodiment of this invention, the outer side of the scraper handle is wrapped with a rubber sleeve, wherein the outer surface of the rubber sleeve is uniformly provided with anti-slip grooves.

[0014] As a preferred embodiment of this invention, the scraper handle is equipped with a battery, and the outer surface of the lighting fixture is provided with a control switch. The control switch is connected to the lighting fixture and the battery via wires, and the connection is electrical.

[0015] As a preferred embodiment of this invention, the top of the gear is provided with four sets of limiting holes arranged in a matrix.

[0016] As a preferred embodiment of this invention, a rotating rod is connected to the center of the top of the gear.

[0017] Compared with existing technologies, the turbine overhaul scraper of this invention allows for gear rotation controlled by turning a knob. This gear drives two sets of racks to move laterally in the same or opposite directions, thereby adjusting the outward extension distance of the scraper blades on both sides. After adjustment, the limiting cover is fastened, and the fixing rod is inserted into the corresponding limiting hole for fixation. Ultimately, the distance between the scraper blades on both sides can be easily adjusted to accommodate operation on steam seal tooth grooves of different widths. Furthermore, during in-depth overhauls when lighting is insufficient, a lighting fixture can be turned on to provide illumination, facilitating observation by maintenance workers and improving operational accuracy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the overall structure of the present invention patent;

[0019] Figure 2 This is a structural diagram of the blade adjustment mechanism of this invention patent;

[0020] Figure 3 This is a structural diagram of the scraper handle of this invention patent.

[0021] In the diagram: 1. Scraper housing; 2. Blade adjustment mechanism; 201. Gear; 202. Rack; 203. Scraper blade; 204. Limiting hole; 205. Rotating rod; 206. Knob; 207. Limiting cover; 208. Fixing rod; 3. Scraper handle; 301. Connecting rod; 302. Connecting rod sleeve; 303. Finger ring fastener; 304. Lighting lamp holder. Detailed Implementation

[0022] To further understand the present invention, embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the present invention.

[0023] An embodiment of the present invention discloses a scraper for turbine maintenance, such as... Figures 1-3 As shown, it includes a scraper housing 1, a blade adjustment mechanism 2 is provided inside the scraper housing 1, and a scraper handle 3 is connected to the front of the scraper housing 1;

[0024] In this embodiment, please refer to Figure 1 and Figure 2 The blade adjustment mechanism 2 includes a gear 201 rotatably connected to the center of the inside of the scraper housing 1. A rack 202 is meshed with the inside of the scraper housing 1 and on both the front and rear sides of the gear 201. A scraper blade 203 is installed on the outside of the rack 202. The top of the gear 201 has four sets of limiting holes 204 arranged in a matrix. A rotating rod 205 is connected to the center of the top of the gear 201. A knob 206 is connected to one end of the rotating rod 205 that passes through the top of the scraper housing 1. A limiting cover 207 is slidably connected to the outside of the rotating rod 205 and the top of the scraper housing 1. A fixing rod 208 that cooperates with the limiting hole 204 is symmetrically arranged on the bottom of the limiting cover 207.

[0025] The scraper housing 1 has rectangular slots on both the left and right sides along its length for the scraper blade 203 to extend out, facilitating the smooth movement of the scraper blade 203. The top of the scraper housing 1 has through holes at the positions corresponding to the rotating rod 205 and the fixed insertion rod 208. The limiting hole 204 and the fixed insertion rod 208 are designed with a plug-in structure. Inserting the fixed insertion rod 208 into the limiting hole 204 at the corresponding position can fix the gear 201.

[0026] In this embodiment, please refer to Figure 1 and Figure 2The middle section of the scraper handle 3 is connected to a connecting rod 301. A connecting rod sleeve 302 is rotatably sleeved on the outside of the connecting rod 301. A finger ring fastener 303 is installed on the outside of the connecting rod sleeve 302. A lighting lamp holder 304 is connected to the outside of the finger ring fastener 303. When the lighting is insufficient during in-depth maintenance, the lighting lamp holder 304 can be turned on by controlling the switch. The lighting position can be adjusted by rotating the connecting rod 301 and the connecting rod sleeve 302, which facilitates the observation of maintenance workers and improves the accuracy of operation.

[0027] The scraper handle 3 is wrapped with a rubber sleeve to protect the palm. The outer surface of the rubber sleeve is evenly provided with anti-slip grooves to improve anti-slip performance and prevent slippage. The scraper handle 3 is equipped with a battery. The outer surface of the lighting fixture 304 is provided with a control switch. The control switch is connected to the lighting fixture 304 and the battery by wires, and the connection is electrical.

[0028] The workflow of this invention patent is as follows: When maintenance workers operate a scraper to scrape the tooth grooves of the turbine seal teeth, they can control the rotation of gear 201 by turning knob 206. This causes gear 201 to drive two sets of racks 202 to move laterally in the same or opposite directions, thereby adjusting the outward extension distance of the scraper blades 203 on both sides. After adjustment, the limiting cover 207 is fastened and the fixing rod 208 is inserted into the corresponding limiting hole 204 for fixation. Ultimately, the distance between the scraper blades 203 on both sides can be easily adjusted to meet the purpose of operating on the tooth grooves of the seal teeth with different widths. When the maintenance worker holds the scraper handle 3, they can insert their thumb into the finger ring buckle 303, which not only prevents the scraper from slipping out of their hand, but also allows the lighting fixture 304 to be turned on by controlling the switch when the lighting is insufficient during in-depth maintenance. The lighting position can be adjusted by rotating the connecting rod 301 and the connecting rod sleeve 302, which facilitates the observation of the maintenance worker and improves the accuracy of operation.

[0029] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A scraper for turbine maintenance, comprising a scraper housing (1), characterized in that: The scraper housing (1) is provided with a blade adjustment mechanism (2) inside, and the scraper handle (3) is connected to the front of the scraper housing (1). The blade adjustment mechanism (2) includes a gear (201) rotatably connected to the center of the inside of the scraper housing (1). A rack (202) is meshed with the inside of the scraper housing (1) and on both the front and rear sides of the gear (201). A scraper blade (203) is installed on the outside of the rack (202). A limiting hole (204) is opened on the top of the gear (201). A rotating rod (205) is connected to the top of the gear (201). A knob (206) is connected to one end of the rotating rod (205) that passes through the top of the scraper housing (1). A limiting cover (207) is slidably connected to the outside of the rotating rod (205) and on the top of the scraper housing (1). A fixing rod (208) that cooperates with the limiting hole (204) is symmetrically arranged on the bottom of the limiting cover (207). A lamp holder (304) is connected to the scraper handle (3); A through hole is provided on the top of the scraper housing (1) and at the position corresponding to the rotating rod (205) and the fixed insertion rod (208).

2. The turbine overhaul scraper according to claim 1, characterized in that, The scraper housing (1) has rectangular grooves on both the left and right sides along the length of the scraper housing (1) for the scraper blade (203) to extend out.

3. The turbine overhaul scraper according to claim 1, characterized in that, The limiting hole (204) and the fixed plug rod (208) are designed as a plug-in structure.

4. The turbine overhaul scraper according to claim 1, characterized in that, The middle section of the scraper handle (3) is connected to a connecting rod (301), and a connecting rod sleeve (302) is rotatably sleeved on the outside of the connecting rod (301). A finger ring fastener (303) is installed on the outside of the connecting rod sleeve (302), and a lighting lamp holder (304) is connected to the outside of the finger ring fastener (303).

5. The turbine overhaul scraper according to claim 1, characterized in that, The outer side of the scraper handle (3) is covered with a rubber sleeve, wherein the outer surface of the rubber sleeve is uniformly provided with anti-slip grooves.

6. The turbine overhaul scraper according to claim 4, characterized in that, The scraper handle (3) is equipped with a battery inside, and the outer surface of the lighting fixture (304) is provided with a control switch. The control switch is connected to the lighting fixture (304) and the battery by wires, and the connection is electrical.

7. The turbine overhaul scraper according to claim 1, characterized in that, The top of the gear (201) has four sets of limiting holes (204) arranged in a matrix.

8. The turbine overhaul scraper according to claim 1, characterized in that, A rotating rod (205) is connected to the center of the top of the gear (201).

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