Multifunctional large steam turbine generator wiring cover

Abstract

The utility model discloses a multifunctional large steam turbine generator wiring cover, which comprises a wiring cover shell, one side of the wiring cover shell is provided with an air blowing mechanism for supplying air into the wiring cover shell, and the upper part of the side wall of the wiring cover shell is provided with at least one exhaust pipe; a sleeve communicated with the interior of the wiring cover shell is arranged at the upper part of the wiring cover shell, a porcelain sleeve of the generator penetrates through the sleeve and enters the interior of the wiring cover shell, and the porcelain sleeve and the sleeve are coated with a heat-shrinkable insulating sleeve; and a copper bar is fixed in the wiring cover shell through an insulating plate. The utility model has waterproof, dustproof, moistureproof and hydrogen-discharging functions, has a remarkable use effect, and ensures the use safety.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine generators, in particular to a multifunctional large-scale steam turbine generator wiring cover. Background Art

[0002] The wiring cover of the steam turbine generator is an electrical connection device between the generator output line and the closed busbar. There are hydrogen cooler water pipes and fixed cooling water pipes on it. When the hydrogen cooler water pipes and fixed cooling water pipes leak, water will flow into the wiring cover, causing high-voltage grounding faults and even safety accidents. At the same time, there is a possibility of hydrogen leakage from the porcelain bushing of the generator in the wiring cover. The hydrogen is in the wiring cover. Due to the internal high voltage, there may be a possibility of explosion. In addition, the setting of the hydrogen exhaust port is too simple, which makes it easy for water, dust and moisture to enter the wiring cover, pollute the porcelain bushing, and cause discharge failure on the surface of the porcelain bushing. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a multifunctional large steam turbine generator wiring cover with waterproof, dustproof, moisture-proof and hydrogen-discharging functions, with significant use effect, ensuring safe use, and effectively solving the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multifunctional large-scale steam turbine generator wiring cover, including a wiring cover shell, one side of the wiring cover shell is provided with a blower mechanism for supplying air to the interior thereof, and at least one exhaust duct is provided on the upper part of the side wall of the wiring cover shell; the upper part of the wiring cover shell is provided with a sleeve connected to the interior thereof, the porcelain sleeve of the generator passes through the sleeve and enters the interior of the wiring cover shell, and the porcelain sleeve and the sleeve are covered with a heat-shrinkable insulating sleeve; a copper bus is fixed to the interior of the wiring cover shell through an insulating plate.

[0005] Preferably, the blowing mechanism comprises a box body, one end of which is open, and the interior of the box body is provided with a plate filter element, a heater and a blower in sequence from the opening to the wiring cover shell.

[0006] Preferably, a closed busbar penetrates the side wall of the wiring cover shell opposite to the hair dryer structure, and the porcelain bushing is electrically connected to the closed busbar through a copper busbar, and the copper busbar is softly connected to the porcelain bushing and the closed busbar through copper braided wire.

[0007] Preferably, six of the porcelain bushings, six of the bushings and six of the heat-shrinkable insulating bushings are provided, and the upper and lower ends of the heat-shrinkable insulating bushings are respectively fitted with the outer wall of the porcelain bushing and the outer wall of the bushing.

[0008] Preferably, four exhaust ducts are provided, and the four exhaust ducts are distributed in pairs on two opposite side walls of the wiring cover shell, and the exhaust ducts have downward elbows.

[0009] Preferably, the insulating plate is fixed to the inner bottom surface of the wiring cover shell, and the insulating plate is fixed to the copper busbar by bolts and nuts.

[0010] Compared with the prior art, the utility model has the following beneficial effects: a heat-shrinkable insulating sleeve is used to seal the porcelain sleeve of the generator and the wiring cover shell, which has the functions of insulation, waterproofing and dustproofing; an exhaust pipe is arranged in the wiring cover shell to discharge hydrogen and exhaust gas; a blower mechanism is arranged in the wiring cover shell, and after the air is filtered and heated, it is sent into the wiring cover shell through the blower to form a slight positive pressure, which can force moisture and hydrogen to be discharged from the exhaust pipe, and at the same time, the clean and dry air can protect the porcelain sleeve to a certain extent, and has the functions of waterproofing, dustproofing, moisture-proofing and hydrogen discharge, and has a significant use effect, ensuring safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 It is an enlarged schematic diagram of the local structure of the utility model.

[0014] In the figure: 1 blower mechanism, 1.1 box body, 1.2 plate filter element, 1.3 heater, 1.4 fan, 2 wiring cover shell, 2.1 exhaust duct, 2.2 bushing, 3 closed busbar, 4 porcelain bushing, 5 heat shrinkable insulating bushing, 6 copper busbar, 7 insulating board, 8 copper braided wire. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0016] See also Figure 1-3 The utility model provides a technical solution: a multifunctional large steam turbine generator wiring cover, including a wiring cover shell 2, a side of the wiring cover shell 2 is provided with a blower mechanism 1 for supplying air to the inside thereof, and the upper part of the side wall of the wiring cover shell 2 is provided with at least one exhaust pipe 2.1; the upper part of the wiring cover shell 2 is provided with a sleeve 2.2 connected with the inside thereof, the porcelain sleeve 4 of the generator passes through the sleeve 2.2 and enters the inside of the wiring cover shell 2, and the porcelain sleeve 4 and the sleeve 2.2 are covered with a heat shrinkable insulating sleeve 5; the inside of the wiring cover shell 2 is fixed with a copper bus 6 through an insulating plate 7;

[0017] By blowing air into the wiring cover housing 2 through the air supply mechanism 1, moisture and hydrogen in the wiring cover housing 2 can be forcibly discharged from the exhaust pipe 2.1. At the same time, the clean and dry air plays a certain protective role on the porcelain bushing. In addition, a heat shrinkable insulating sleeve 5 is sleeved between the porcelain bushing 4 and the sleeve 2.2 to block the gap between the porcelain bushing 4 and the sleeve 2.2, thereby preventing dust and water from entering the wiring cover housing 2 and ensuring safety in use.

[0018] Specifically, the air blowing mechanism 1 comprises a box body 1.1, one end of which is open, and the inside of the box body 1.1 is provided with a plate filter element 1.2, a heater 1.3 and a fan 1.4 in sequence from the opening to the wiring cover housing 2. The plate filter element 1.2 is used to filter air and reduce the entry of dust. The filtered air is then heated by the heater 1.3 and finally sent into the wiring cover housing 2 by the fan 1.4, that is, hot air can be blown into the wiring cover housing 2 to make the wiring cover housing 2 in a dry state.

[0019] Furthermore, the side wall of the wiring cover housing 2 opposite to the blower mechanism 1 is penetrated by a closed busbar 3, the porcelain bushing 4 is electrically connected to the closed busbar 3 through a copper busbar 6, and the copper busbar 6 is softly connected to the porcelain bushing 4 and the closed busbar 3 through a copper braided wire 8, and the copper braided wire 8 is used for soft connection, leaving wiring space;

[0020] Further, the porcelain bushing 4, the bushing 2.2 and the heat shrinkable insulating bushing 5 are each provided with six, and the upper and lower ends of the heat shrinkable insulating bushing 5 are respectively fitted with the outer wall of the porcelain bushing 4 and the outer wall of the bushing 2.2, that is, one end of the heat shrinkable insulating bushing 5 is sleeved on the outer wall of the porcelain bushing 4, and the other end of the heat shrinkable insulating bushing 5 is sleeved on the outer wall of the bushing 2.2, and then hot air is used to blow the heat shrinkable insulating bushing 5 to the outer wall of the porcelain bushing 4 and the bushing 2.2 to form a seal;

[0021] Furthermore, four exhaust pipes 2.1 are provided, and the four exhaust pipes 2.1 are distributed in pairs on two opposite side walls of the wiring cover housing 2, and the exhaust pipes 2.1 have downward elbows to prevent water from flowing in;

[0022] In addition, the insulating plate 7 is fixed to the inner bottom surface of the wiring cover housing 2, and the insulating plate 7 is fixed to the copper busbar 6 by bolts and nuts.

[0023] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended to include all changes that fall within the meaning and scope of equivalent elements in the content of the present invention.

Claims

1. A multifunctional large steam turbine generator wiring cover, comprising a wiring cover housing (2), characterized in that: A blower mechanism (1) for supplying air to the interior of the wiring cover housing (2) is provided on one side of the wiring cover housing (2), and at least one exhaust pipe (2.1) is provided on the upper portion of the side wall of the wiring cover housing (2); a sleeve (2.2) communicating with the interior of the wiring cover housing (2) is provided on the upper portion of the wiring cover housing (2); a porcelain sleeve (4) of the generator passes through the sleeve (2.2) and enters the interior of the wiring cover housing (2), and the porcelain sleeve (4) and the sleeve (2.2) are covered with a heat shrinkable insulating sleeve (5); a copper busbar (6) is fixed to the interior of the wiring cover housing (2) via an insulating plate (7).

2. A multifunctional large steam turbine generator wiring cover according to claim 1, characterized in that: The air blowing mechanism (1) comprises a box body (1.1), one end of the box body (1.1) is open, and the interior of the box body (1.1) is provided with a plate-type filter element (1.2), a heater (1.3) and a fan (1.4) in sequence from the opening to the wiring cover housing (2).

3. The multifunctional large steam turbine generator wiring cover according to claim 1 is characterized in that: A closed busbar (3) is passed through the side wall of the wiring cover housing (2) opposite to the blower mechanism (1); the porcelain bushing (4) is electrically connected to the closed busbar (3) via a copper busbar (6); and the copper busbar (6) is softly connected to the porcelain bushing (4) and the closed busbar (3) via a copper braided wire (8).

4. The multifunctional large steam turbine generator wiring cover according to claim 1 is characterized in that: The porcelain bushing (4), bushing (2.2) and heat shrinkable insulating bushing (5) are each provided with six corresponding ones, and the upper and lower ends of the heat shrinkable insulating bushing (5) are respectively fitted with the outer wall of the porcelain bushing (4) and the outer wall of the bushing (2.2).

5. The multifunctional large steam turbine generator wiring cover according to claim 1 is characterized in that: Four exhaust pipes (2.1) are provided, and the four exhaust pipes (2.1) are distributed in pairs on two opposite side walls of the wiring cover housing (2), and the exhaust pipes (2.1) have downwardly facing elbows.

6. The multifunctional large steam turbine generator wiring cover according to claim 1, characterized in that: The insulating plate (7) is fixed to the inner bottom surface of the wiring cover housing (2), and the insulating plate (7) is fixed to the copper busbar (6) by means of bolts and nuts.

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