Portable scraping and grinding device for steam seal of steam turbine

Abstract

The utility model discloses a portable scraping and grinding device for a steam seal of a steam turbine, which relates to the technical field of steam seal of steam turbines, and comprises a heat dissipation chamber and a tip scraping and grinding mechanism arranged on the heat dissipation chamber, and the tip scraping and grinding mechanism is assembled to scrape and grind a gap of the steam seal of the steam turbine. According to the utility model, through the tip scraping and grinding mechanism arranged on the heat dissipation chamber and the surface scraping and grinding mechanism arranged at one end of the heat dissipation chamber, the tip scraping and grinding mechanism extends into the steam seal gap and the surface of the steam turbine to scrape and grind the steam seal gap of the steam turbine, and a user holds the handheld handle and only holds the auxiliary holding mechanism; when the gap of the steam seal of the steam turbine is polished, the tip scraping and grinding mechanism is started, and when the surface of the steam seal is polished, the surface scraping and grinding mechanism is started, so that the scraping and grinding device is held by two hands to scrape and grind the steam seal, labor is saved, flexibility and efficiency are higher, meanwhile, the steam seal can be polished in all directions, and the scraping and grinding device is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine seals, in particular to a portable scraping and grinding device for steam turbine seals. Background Art

[0002] The steam turbine seal scraping device is a device used to maintain the steam turbine seal. It is used during turbine shutdown or specific maintenance operations to ensure the effectiveness and long-term operation of the seal. The purpose of using the scraping device is to remove dirt on the sealing surface and restore its original flat surface, thereby ensuring that the seal can effectively seal during operation.

[0003] Utility model patent publication number CN209520723U discloses a device that overcomes the shortcomings of existing technologies, featuring a simple structure and easy installation and use. Maintenance can be performed on-site without returning the turbine's inner cylinder to the factory, reducing maintenance costs. The device's adaptability to local conditions saves maintenance time. Its portable design eliminates on-site maintenance space and facilitates operator access. Its rapid on-site processing allows for the determination of the ideal clearance between each baffle, improving turbine efficiency and minimizing steam leakage and coal consumption while ensuring safe unit operation.

[0004] However, during the maintenance of existing steam turbine seals, it is inconvenient to use a handheld scraping device to perform multi-angle scraping on the seal surface, gaps, and tip gaps. Utility Model Content

[0005] The utility model provides a portable scraping and grinding device for a steam turbine steam seal, which has the advantage of being easy to carry and perform all-round scraping and grinding of the steam turbine steam seal, thereby solving the problems that the existing steam turbine steam seal scraping and grinding device is not easy to carry and the surface of the steam seal structure cannot be scraped in place.

[0006] In order to achieve the purpose of facilitating the hand-held scraping device to perform all-round scraping of the turbine steam seal, the utility model provides the following technical solutions: it includes a heat dissipation chamber and a tip scraping mechanism arranged on the heat dissipation chamber, the tip scraping mechanism is assembled so that when the turbine steam seal gap is scraped, the tip scraping mechanism extends into the turbine steam seal gap, and also includes: the tip scraping mechanism includes a tip scraping chamber, a tip scraping servo motor, a tip scraping transmission shaft, a tip scraping connecting tube and a tip scraping wheel; a surface scraping mechanism arranged at one end of the heat dissipation chamber, the surface scraping mechanism includes a surface scraping chamber, a surface scraping servo motor, a surface scraping transmission shaft, a surface scraping connecting tube and a surface scraping wheel; a ventilation cover arranged at the top of the heat dissipation chamber, the interior of the ventilation cover is provided with a ventilation bar; an auxiliary holding mechanism arranged on one side of the heat dissipation chamber, the auxiliary holding mechanism includes a support handle and an anti-slip sleeve.

[0007] As an optimal technical solution of the present invention, one end of the tip scraping chamber is connected to the interior of the heat dissipation chamber, and a tip scraping servo motor is provided inside the tip scraping chamber. The output end of the tip scraping servo motor is fixedly installed with a tip scraping transmission shaft, and the surface of the tip scraping transmission shaft is sleeved with a tip scraping connecting tube, and one end of the tip scraping connecting tube is fixedly connected to a tip scraping wheel.

[0008] As a preferred technical solution of the present invention, the surfaces of the tip scraper transmission shaft and the tip scraper connecting cylinder are symmetrically provided with A anchoring holes, and the interiors of the A anchoring holes are threaded with A bolts.

[0009] As an optimal technical solution of the present invention, one end of the surface scraping chamber is connected to the interior of the heat dissipation chamber, a surface scraping servo motor is provided inside the surface scraping chamber, the output end of the surface scraping servo motor is fixedly installed with a surface scraping transmission shaft, the surface of the surface scraping transmission shaft is sleeved with a surface scraping connecting cylinder, and one end of the surface scraping connecting cylinder is fixedly connected to a surface scraping wheel.

[0010] As a preferred technical solution of the present invention, the surfaces of the surface scraping transmission shaft and the surface scraping connecting cylinder are symmetrically provided with B anchoring holes, and the interiors of the B anchoring holes are threaded with B bolts.

[0011] As a preferred technical solution of the present invention, one end of the support handle is fixedly connected to one side of the heat dissipation chamber, and a non-slip sleeve is sleeved on the surface of the support handle.

[0012] As an optimal technical solution of the present invention, one end of the heat dissipation chamber is fixedly connected to a switch chamber, and a tip scraping start switch and a surface scraping start switch are provided on the surface of the switch chamber; the tip scraping start switch is electrically connected to the tip scraping servo motor through a power line, and the surface scraping start switch is electrically connected to the surface scraping servo motor through a power line.

[0013] As an optimal technical solution of the present invention, one end of the switch chamber is fixedly connected to a hand-held handle, one end of the hand-held handle is provided with a battery box, a lithium battery is provided inside the battery box, and the lithium battery is electrically connected to the tip scraping start switch and the surface scraping start switch through a power cord.

[0014] Compared with the prior art, the present invention provides a portable scraping and grinding device for steam turbine seals, which has the following beneficial effects:

[0015] The portable scraping and grinding device for a steam turbine steam seal utilizes a tip scraping mechanism provided on a heat dissipation chamber and a surface scraping mechanism provided at one end of the heat dissipation chamber, thereby enabling the tip scraping mechanism to extend into the steam turbine steam seal gap and scrape the surface of the steam turbine steam seal gap. A user holds a handle in one hand and an auxiliary holding mechanism in the other hand, and starts the tip scraping mechanism when grinding the steam turbine steam seal gap, and starts the surface scraping mechanism when grinding the steam seal surface, thereby enabling the scraping device to be held by both hands to scrape the steam seal, which is more labor-saving, more flexible and efficient, and can grind the steam seal in all directions at the same time, and is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the split structure of the tip scraping mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the surface scraping mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the heat dissipation chamber structure of the utility model.

[0020] In the figure: 1. Heat dissipation chamber; 2. Tip scraping mechanism; 201. Tip scraping chamber; 202. Tip scraping servo motor; 203. Tip scraping drive shaft; 204. Tip scraping connecting cylinder; 205. Tip scraping wheel; 3. Surface scraping mechanism; 301. Surface scraping chamber; 302. Surface scraping servo motor; 303. Surface scraping drive shaft; 304. Surface scraping connecting cylinder; 305. Surface scraping wheel; 4. Ventilation cover; 5. Ventilation bar; 6. Auxiliary holding mechanism; 601. Support handle; 602. Anti-slip sleeve; 7. Bolt A; 8. Bolt B; 9. Switch chamber; 10. Tip scraping start switch; 11. Surface scraping start switch; 12. Handle; 13. Battery box. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 4The utility model discloses a portable scraping device for a steam turbine steam seal, comprising a heat dissipation chamber 1 and a tip scraping mechanism 2 arranged on the heat dissipation chamber 1, wherein the tip scraping mechanism 2 is assembled so that when the steam turbine steam seal gap is scraped, the tip scraping mechanism 2 extends into the steam turbine steam seal gap, and further comprises: the tip scraping mechanism 2 comprises a tip scraping chamber 201, a tip scraping servo motor 202, a tip scraping transmission shaft 203, a tip scraping connecting tube 204 and a tip scraping wheel 205; a surface scraping mechanism 3 arranged at one end of the heat dissipation chamber 1, the surface scraping mechanism 3 comprises a surface scraping chamber 301, a surface scraping servo motor 302, a surface scraping transmission shaft 303, a surface scraping connecting tube 304 and a surface scraping wheel 305; a ventilation cover 4 arranged at the top of the heat dissipation chamber 1, wherein a ventilation bar 5 is arranged inside the ventilation cover 4; an auxiliary holding mechanism 6 arranged at one side of the heat dissipation chamber 1, wherein the auxiliary holding mechanism 6 comprises a support handle 601 and an anti-slip sleeve 602.

[0023] Specifically, one end of the tip scraping chamber 201 is connected to the interior of the heat dissipation chamber 1, and a tip scraping servo motor 202 is provided inside the tip scraping chamber 201. A tip scraping transmission shaft 203 is fixedly installed at the output end of the tip scraping servo motor 202. A tip scraping connecting cylinder 204 is sleeved on the surface of the tip scraping transmission shaft 203. One end of the tip scraping connecting cylinder 204 is fixedly connected to a tip scraping wheel 205.

[0024] The surfaces of the tip scraping transmission shaft 203 and the tip scraping connecting cylinder 204 are symmetrically provided with A anchoring holes, and the interiors of the A anchoring holes are threaded with A bolts 7 .

[0025] In this embodiment, before use, when it is necessary to scrape the tip gap, screw the A bolt 7 to fix the tip scraping wheel 205 on the tip scraping drive shaft 203, and when the tip scraping wheel 205 is damaged, it can be easily replaced. During use, the heat generated by the tip scraping servo motor 202 is conducted from the tip scraping chamber 201 to the heat dissipation chamber 1 for dissipation, thereby avoiding overheating of the machine during operation and reducing the service life of the machine.

[0026] Specifically, one end of the surface scraping chamber 301 is connected to the interior of the heat dissipation chamber 1, and a surface scraping servo motor 302 is provided inside the surface scraping chamber 301. A surface scraping transmission shaft 303 is fixedly installed at the output end of the surface scraping servo motor 302. A surface scraping connecting cylinder 304 is sleeved on the surface of the surface scraping transmission shaft 303, and one end of the surface scraping connecting cylinder 304 is fixedly connected to a surface scraping wheel 305.

[0027] The surfaces of the surface scraping transmission shaft 303 and the surface scraping connecting cylinder 304 are symmetrically provided with B anchoring holes, and the interiors of the B anchoring holes are threaded with B bolts 8 .

[0028] In this embodiment, before use, when the surface needs to be scraped, screw the B bolt 8 to fix the surface scraping wheel 305 on the surface scraping drive shaft 303. When the surface scraping wheel 305 is damaged, it is also easy to replace. During use, the heat generated by the surface scraping servo motor 302 is transferred from the surface scraping chamber 301 to the heat dissipation chamber 1 for dissipation.

[0029] Specifically, one end of the support handle 601 is fixedly connected to one side of the heat dissipation chamber 1 , and a non-slip cover 602 is sleeved on the surface of the support handle 601 .

[0030] In this embodiment, the support handle 601 and the anti-slip cover 602 are arranged so that when in use, the user holds the support handle 601 and the anti-slip cover 602 in the left hand and the hand-held handle 12 in the right hand, making the scraping more stable.

[0031] Specifically, one end of the heat dissipation chamber 1 is fixedly connected to a switch chamber 9, and a tip scraping start switch 10 and a surface scraping start switch 11 are provided on the surface of the switch chamber 9; the tip scraping start switch 10 is electrically connected to the tip scraping servo motor 202 via a power line, and the surface scraping start switch 11 is electrically connected to the surface scraping servo motor 302 via a power line;

[0032] One end of the switch chamber 9 is fixedly connected to a hand-held handle 12, and one end of the hand-held handle 12 is provided with a battery box 13. A lithium battery is provided inside the battery box 13, and the lithium battery is electrically connected to the tip scraping start switch 10 and the surface scraping start switch 11 through a power line.

[0033] In this embodiment, when in use, according to the use environment, when it is necessary to scrape the tip gap, the tip scraping start switch 10 is started, so that the tip scraping servo motor 202 is energized, driving the tip scraping transmission shaft 203, the tip scraping connecting cylinder 204 and the tip scraping wheel 205 to rotate synchronously, thereby scraping the tip gap; when it is necessary to grind the surface, the surface scraping start switch 11 is started, so that the surface scraping servo motor 302 is energized, driving the surface scraping transmission shaft 303, the surface scraping connecting cylinder 304 and the surface scraping wheel 305 to rotate synchronously, thereby scraping the steam seal surface.

[0034] The working principle and use process of the utility model: before use, after fully charging the lithium battery, screw the A bolt 7 and the B bolt 8 to fix the tip scraping wheel 205 and the surface scraping wheel 305 on the scraping device respectively;

[0035] During use, according to the use requirements of the steam seal, when scraping the tip gap of the steam seal, press the tip scraping start switch 10 to energize the lithium battery and the tip scraping servo motor 202, and then the output end of the tip scraping servo motor 202 rotates to drive the tip scraping transmission shaft 203, the tip scraping connecting tube 204 and the tip scraping wheel 205 to rotate synchronously. When it is necessary to scrape the surface of the steam seal, press the surface scraping start switch 11 to energize the lithium battery and the surface scraping servo motor 302, and the output end of the surface scraping servo motor 302 rotates to drive the surface scraping transmission shaft 303, the surface scraping connecting tube 304 and the surface scraping wheel 305 to rotate synchronously.

[0036] Afterwards, the operator holds the handle 12 with one hand and the auxiliary holding mechanism with the other hand to perform all-round and multi-angle scraping on the steam seal surface and gap, and the operation method is more stable and flexible.

[0037] To sum up, by means of the tip scraping mechanism 2 provided on the heat dissipation chamber 1 and the surface scraping mechanism 3 provided at one end of the heat dissipation chamber 1, the tip scraping mechanism 2 is extended into the turbine steam seal gap and the surface of the turbine steam seal gap is scraped. The user holds the hand-held handle 12 in one hand and the auxiliary holding mechanism 6 in the other hand. When grinding the turbine steam seal gap, the tip scraping mechanism 2 is started, and when grinding the steam seal surface, the surface scraping mechanism 3 is started, thereby achieving scraping the steam seal by holding the scraping device with both hands, which is more labor-saving, more flexible and efficient, can grind the steam seal in all directions at the same time, and is easy to carry.

[0038] It should be noted that, in this document, terms such as "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable scraping device for a steam turbine steam seal, comprising a heat dissipation chamber (1) and a tip scraping mechanism (2) arranged on the heat dissipation chamber (1), wherein the tip scraping mechanism (2) is arranged so that when scraping the steam turbine steam seal gap, the tip scraping mechanism (2) extends into the steam turbine steam seal gap, and is characterized in that: Also includes: The tip scraping mechanism (2) comprises a tip scraping chamber (201), a tip scraping servo motor (202), a tip scraping transmission shaft (203), a tip scraping connecting cylinder (204), and a tip scraping wheel (205); A surface scraping mechanism (3) is provided at one end of the heat dissipation chamber (1), the surface scraping mechanism (3) comprising a surface scraping chamber (301), a surface scraping servo motor (302), a surface scraping transmission shaft (303), a surface scraping connecting cylinder (304), and a surface scraping wheel (305); A ventilation cover (4) is provided on the top of the heat dissipation chamber (1), wherein a ventilation fence (5) is provided inside the ventilation cover (4); An auxiliary holding mechanism (6) is provided on one side of the heat dissipation chamber (1), wherein the auxiliary holding mechanism (6) comprises a support handle (601) and an anti-slip sleeve (602).

2. A portable scraping and grinding device for a steam turbine seal according to claim 1, characterized in that: One end of the tip scraping chamber (201) is connected to the interior of the heat dissipation chamber (1); a tip scraping servo motor (202) is provided inside the tip scraping chamber (201); a tip scraping transmission shaft (203) is fixedly mounted on the output end of the tip scraping servo motor (202); a tip scraping connecting cylinder (204) is sleeved on the surface of the tip scraping transmission shaft (203); and one end of the tip scraping connecting cylinder (204) is fixedly connected to a tip scraping wheel (205).

3. The portable scraping and grinding device for a steam turbine seal according to claim 2, characterized in that: The surfaces of the tip scraping transmission shaft (203) and the tip scraping connecting cylinder (204) are both symmetrically provided with A anchoring holes, and the interiors of the A anchoring holes are both threadedly penetrated by A bolts (7).

4. The portable scraping and grinding device for a steam turbine seal according to claim 1, characterized in that: One end of the surface scraping chamber (301) is connected to the interior of the heat dissipation chamber (1); a surface scraping servo motor (302) is provided inside the surface scraping chamber (301); a surface scraping transmission shaft (303) is fixedly mounted on the output end of the surface scraping servo motor (302); a surface scraping connecting cylinder (304) is sleeved on the surface of the surface scraping transmission shaft (303); and one end of the surface scraping connecting cylinder (304) is fixedly connected to a surface scraping wheel (305).

5. The portable scraping and grinding device for a steam turbine seal according to claim 4, characterized in that: The surfaces of the surface scraping transmission shaft (303) and the surface scraping connecting cylinder (304) are both symmetrically provided with B anchoring holes, and the interiors of the B anchoring holes are both threadedly penetrated by B bolts (8).

6. The portable scraping and grinding device for a steam turbine seal according to claim 4, characterized in that: One end of the support handle (601) is fixedly connected to one side of the heat dissipation chamber (1), and a non-slip sleeve (602) is sleeved on the surface of the support handle (601).

7. The portable scraping and grinding device for a steam turbine seal according to claim 1, characterized in that: One end of the heat dissipation chamber (1) is fixedly connected to a switch chamber (9), and a tip scraping start switch (10) and a surface scraping start switch (11) are provided on the surface of the switch chamber (9); The tip scraping start switch (10) is electrically connected to the tip scraping servo motor (202) via a power line, and the surface scraping start switch (11) is electrically connected to the surface scraping servo motor (302) via a power line.

8. The portable scraping and grinding device for a steam turbine seal according to claim 7, characterized in that: One end of the switch chamber (9) is fixedly connected to a hand-held handle (12), one end of the hand-held handle (12) is provided with a battery box (13), a lithium battery is provided inside the battery box (13), and the lithium battery is electrically connected to the tip scraping start switch (10) and the surface scraping start switch (11) through a power line.

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