Annular carbon powder suction hood structure of giant hydro-generator

Abstract

The utility model discloses an annular carbon powder suction hood structure of a giant hydro-generator. The annular carbon powder suction hood structure is composed of a lower dust hood, a middle dust hood, a first dust collection pipe, a second dust collection pipe and a dust suction device. The lower dust collecting cover, the middle dust collecting cover and the upper dust collecting cover are connected into a closed outer cover through bolts and screws, and the closed outer cover is in clearance fit with the collecting ring to form a closed annular cavity. The closed cavity is connected with the dust suction device into a whole through the second dust collection pipe, so that dust generated by the collector ring and the carbon brush is absorbed. According to the structure, carbon powder at the collector ring is effectively collected, and the segmented dust collection cover is adopted to facilitate disassembly and cleaning; the dust collection holes are formed in the upper dust collection cover and the lower dust collection cover correspondingly, the dust collection area is increased, efficient dust collection of all parts in the dust collection covers is achieved, the problems that a traditional structure is poor in dust collection effect, and dust at the lower ends of the dust collection covers cannot be effectively collected are solved, and short-circuit discharge accidents caused by the dust are effectively avoided. And the installation convenience, the operation stability and the operation reliability of the unit are improved.

Description

Technical Field

[0001] The utility model relates to the field of hydro-generators, in particular to an annular carbon powder dust collecting cover structure of a giant hydro-generator. Background Art

[0002] When a hydro-turbine generator is operating, the excitation system supplies power to the rotor via the slip rings. When the rotating slip rings come into contact with the fixed carbon brushes, carbon blocks wear and tear, generating carbon dust. If not collected and cleaned promptly, carbon dust will accumulate on the slip rings and the upper surface of the rotor. Long-term operation in this environment can cause short circuits and discharges in the unit, posing a safety hazard and easily leading to accidents. Therefore, poor carbon dust collection at the slip rings has become an industry-wide problem that hinders the safe and stable operation of hydro-turbine generators. Utility Model Content

[0003] In light of this, the purpose of this utility model is to disclose an annular carbon dust collection hood structure for giant hydroelectric generators. This structure features a stable and simple structure, allows for efficient dust collection from all parts of the hood, and facilitates on-site installation and maintenance. This utility model effectively addresses the issues of poor dust collection effectiveness and ineffective dust collection at the bottom of the hood during unit operation, as seen with conventional structures. This effectively prevents short-circuit discharge accidents caused by dust.

[0004] The technical solution of the utility model is that it consists of a lower dust collecting hood, a middle dust collecting hood, an upper dust collecting hood, a first dust collecting pipe, a second dust collecting pipe, and a dust collecting device; the annular carbon powder dust collecting hood structure of the giant hydro-generator connects the lower dust collecting hood, the middle dust collecting hood and the upper dust collecting hood into a closed outer cover through bolts and screws, and cooperates with the collector ring gap to form a closed annular cavity; the closed cavity is connected to the dust collecting device as a whole through the second dust collecting pipe, so as to absorb the dust generated by the collector ring and the carbon brush.

[0005] The lower dust collecting hood and the middle dust collecting hood are in a split form, and the gap between them and the lower ring plate of the collector ring is matched to realize the lower end closure.

[0006] The middle dust collecting cover is circumferentially provided with dust collecting holes connected with the second dust collecting pipe.

[0007] The upper dust collecting cover is circumferentially provided with dust suction holes connected to the first dust collecting pipe; the upper end is matched with the upper ring gap of the collector ring to realize the upper end closure.

[0008] The dust collecting device is connected to the second dust collecting pipe to form a whole.

[0009] The beneficial effects of the utility model are:

[0010] 1. The annular carbon powder dust collection hood structure of this giant hydro-turbine generator has dust collection holes set on the upper and lower dust collection hoods respectively, which increases the dust collection area and realizes efficient dust collection in all parts of the dust collection hood, avoiding the occurrence of short-circuit discharge accidents at the collector ring caused by poor dust collection effect of traditional structures.

[0011] 2. The utility model provides a dust suction hole at the lower dust collecting hood, which solves the problem that dust at the lower end of the dust collecting hood cannot be collected.

[0012] 3. The annular carbon powder dust collection cover structure of this giant hydro-turbine generator adopts a multi-section dust collection cover, which reduces the weight of each part and facilitates the disassembly and cleaning of the dust collection cover.

[0013] 4. The utility model has a stable and simple structure, which improves the efficiency of the installation of the unit and the safety and stability of the unit operation. At the same time, it greatly facilitates on-site installation and maintenance.

[0014] 5. The utility model has strong applicability to hydro-generator sets of different structures and sizes, has a flexible structure, and has low requirements on the structure of the generator set rotor, etc., and has wide engineering application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Explanation of the markings in the figure: 1-lower dust hood; 2-middle dust hood; 3-upper dust hood; 4-first dust collecting pipe; 5-second dust collecting pipe; 6-dust suction device; 7-collector ring. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "middle", "first", "second", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figure 1As shown, an annular carbon powder dust collection cover structure of a giant hydro-turbine generator comprises a lower dust collection cover 1, a middle dust collection cover 2, an upper dust collection cover 3, a first dust collection pipe 4, a second dust collection pipe 5, and a dust collection device 6. The annular carbon powder dust collection cover structure of the giant hydro-turbine generator connects the lower dust collection cover 1, the middle dust collection cover 2, and the upper dust collection cover 3 into a closed outer cover by bolts and screws, and forms a closed annular cavity with a gap fit with the collector ring 7. The closed cavity is connected to the dust collection device 6 as a whole through the second dust collection pipe 5 to absorb dust generated by the collector ring 7 and the carbon brush.

[0020] like Figure 1 As shown, the lower dust collecting hood 1 and the middle dust collecting hood 2 are in a split form, and the gap between them and the lower ring plate of the collector ring 7 is matched to achieve the lower end closure.

[0021] like Figure 1 As shown, the middle dust collecting hood 2 is circumferentially provided with dust suction holes connected to the second dust collecting pipe 5 .

[0022] like Figure 1 As shown, the upper dust collecting cover 3 is circumferentially provided with dust suction holes connected to the first dust collecting pipe 4; the upper end is fitted with the upper ring gap of the collector ring 7 to achieve the upper end closure.

[0023] like Figure 1 As shown, the dust collecting device 6 is connected to the second dust collecting pipe 5 to form a whole.

[0024] Finally, the scope of protection of the present invention is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. To the extent such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to encompass such modifications and variations.

Claims

1. A ring-shaped carbon dust collecting cover structure for a giant hydro-generator, characterized by: The invention comprises a lower dust collecting cover (1), a middle dust collecting cover (2), an upper dust collecting cover (3), a first dust collecting pipe (4), a second dust collecting pipe (5), and a dust collecting device (6); the annular carbon powder dust collecting cover structure of the giant hydro-turbine generator connects the lower dust collecting cover (1), the middle dust collecting cover (2), and the upper dust collecting cover (3) to form a closed outer cover by means of bolts and screws, and is gap-matched with a collector ring (7) to form a closed annular cavity; the closed cavity is connected to the dust collecting device (6) as a whole by means of the second dust collecting pipe (5), and absorbs dust generated by the collector ring (7) and the carbon brush.

2. The annular carbon dust collecting cover structure of a giant hydro-turbine generator according to claim 1 is characterized by: The lower dust collecting hood (1) and the middle dust collecting hood (2) are in a split form and are gap-matched with the lower ring plate of the collector ring (7) to achieve lower end closure.

3. The annular carbon dust collecting cover structure of a giant hydro-turbine generator according to claim 1 is characterized by: The middle dust collecting cover (2) is circumferentially provided with dust collecting holes connected to the second dust collecting pipe (5).

4. The annular carbon dust collecting cover structure for a giant hydro-turbine generator according to claim 1 is characterized by: The upper dust collecting cover (3) is provided with dust suction holes in the circumference thereof and is connected to the first dust collecting pipe (4); the upper end is fitted with the upper ring gap of the collector ring (7) to achieve upper end closure.

5. The annular carbon dust collecting cover structure of a giant hydro-turbine generator according to claim 1 is characterized by: The dust collecting device (6) is connected to the second dust collecting pipe (5) to form a whole.

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