CN214480179U - Generator rotor maintenance device for nuclear power plant - Google Patents
Generator rotor maintenance device for nuclear power plant Download PDFInfo
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- CN214480179U CN214480179U CN202022655229.2U CN202022655229U CN214480179U CN 214480179 U CN214480179 U CN 214480179U CN 202022655229 U CN202022655229 U CN 202022655229U CN 214480179 U CN214480179 U CN 214480179U
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Abstract
The utility model provides a generator rotor maintenance device for nuclear power plants, which comprises a metal bellows air inlet, a pipeline pressure regulator, a first branch and a second branch; two corrugated metal pipe gas outlets, two SMC hollow flange corrugated metal pipe gas inlets and two SMC hollow flanges. The gas passes through a pipeline pressure regulator from a gas leading pipeline through a gas inlet of the metal corrugated pipe and then respectively enters a first branch and a second branch which are arranged on the left side and the right side; the air outlets of the two metal corrugated pipes are respectively arranged at one side of the outlets of the first branch and the second branch; and one end of each metal corrugated pipe gas outlet, which is far away from the pipeline pressure regulator, is connected with an SMC hollow flange after being connected with an SMC hollow flange metal corrugated pipe gas inlet through a gas-guiding hose. The utility model can monitor and adjust the maintenance gas pressure in real time; the purpose of continuously dehumidifying the rotor of the generator is achieved.
Description
Technical Field
The utility model belongs to the technical field of it is electric and ventilation, concretely relates to generator rotor maintenance device for nuclear power plant.
Background
At present nuclear power station generator carries out the in-process of maintaining to the rotor after taking out the rotor, need set up a large amount of scaffolds, covers the fire prevention cloth again, satisfies the drying to the generator rotor through blowing hot-blast. This work does not provide the best maintenance effect, and also consumes a lot of man-hours, manpower, and maintenance costs. And usually, the nuclear power plant is located at sea, the humidity of air is relatively high, and the closed gas maintenance is particularly important for the rotor of the generator.
In view of the above, there is a need for an improved generator rotor maintenance device.
Disclosure of Invention
The utility model mainly aims at providing a nuclear power plant is with generator rotor maintenance device realizes the totally closed gaseous maintenance of generator rotor.
The utility model adopts the technical proposal that:
a generator rotor maintenance device for a nuclear power plant comprises a metal corrugated pipe air inlet, a pipeline pressure regulator, a first branch and a second branch; two corrugated metal pipe gas outlets, two SMC hollow flange corrugated metal pipe gas inlets and two SMC hollow flanges.
The gas passes through a pipeline pressure regulator from a gas leading pipeline through a gas inlet of the metal corrugated pipe and then respectively enters a first branch and a second branch which are arranged on the left side and the right side; the air outlets of the two metal corrugated pipes are respectively arranged at one side of the outlets of the first branch and the second branch; and one end of each metal corrugated pipe gas outlet, which is far away from the pipeline pressure regulator, is connected with an SMC hollow flange after being connected with an SMC hollow flange metal corrugated pipe gas inlet through a gas-guiding hose.
A manual regulating valve A and a manual regulating valve with a pressure gauge are sequentially arranged between the air inlet of the metal corrugated pipe and the pipeline pressure regulator.
A safety valve is connected between the air inlet of the metal corrugated pipe and the manual regulating valve A through a metal three-way pipe.
The pipeline pressure regulator is respectively connected with the first branch and the second branch through a metal three-way pipe.
One side of the first branch and one side of the second branch close to the pipeline pressure regulator are respectively and sequentially provided with a manual regulating valve C, a check valve and a flowmeter. The check valve is used for preventing gas from flowing backwards.
The back of each SMC hollow flange is provided with four bolt holes and is connected with a fan seat ring bolt hole of the generator rotor.
The generator rotor maintenance device for the nuclear power plant is further provided with sealed flexible expansion joints at SMC hollow flanges on two sides respectively, and the sealing of an air inlet channel of the generator rotor is realized through the fastening of the sealed flexible expansion joints.
The SMC hollow flange on one side of the first branch is connected with a fan seat ring bolt hole on the excitation side of the generator rotor through a sealed flexible expansion joint on the same side, so that compressed air is blown into the excitation side of the generator rotor through the first branch;
and the SMC hollow flange on one side of the branch circuit II is connected with a steam side fan seat ring bolt hole of the generator rotor through the sealed flexible expansion joint on the same side, so that compressed air is blown into the steam side of the generator rotor through the branch circuit II.
The head end and the tail end of each sealed flexible expansion joint are respectively provided with two semicircular metal clamps, the semicircular metal clamps and the sealed flexible expansion joints on the same side are integrally arranged through compression joint, and the sealed flexible expansion joints are fastened by using long rod screws.
The maintenance method of the generator rotor maintenance device for the nuclear power plant comprises the following steps:
s1: opening a manual regulating valve C of the first branch and the second branch;
s2: slowly opening a manual regulating ball valve A, and slowly opening a manual regulating valve with a pressure gauge;
s3: observing that the pressure of a manual regulating valve with a pressure gauge does not exceed 5 kPa; observing that the flow meters of the first branch and the second branch are consistent, and reducing the opening degree of the manual regulating valve C in the first branch when the flow rate of the flow meter in the first branch is greater than that of the flow meter in the second branch; the branch circuit is the same;
and S4, checking the wind speed of a winding radial ventilation hole of the generator rotor through an anemometer to ensure that the excitation side and the steam side are consistent.
The utility model discloses the beneficial effect who gains does:
1. easy to implement, convenient to operate and maintain;
2. the purpose of continuously dehumidifying the generator rotor is achieved;
3. the maintenance gas pressure can be monitored in real time and adjusted in real time;
4. the maintenance effect of isolating air by adopting the flexible expansion joint is more excellent;
5. the labor cost is saved, and the working period is shortened.
Drawings
FIG. 1 is a schematic structural view of a generator rotor maintenance device for a nuclear power plant;
FIG. 2 is a top view of an SMC hollow flange;
fig. 3 is a front view of a sealed flexible expansion joint.
Wherein: 1 is a metal corrugated pipe air inlet; 2 is a manual regulating valve A; 3 is a manual regulating valve with a pressure gauge; 4 is a pipeline pressure regulator; 7 is a manual regulating valve C; 8 is a check valve B; 10 is a flowmeter; 11 is a safety valve; 12 is a metal corrugated pipe air outlet; 14 is an SMC hollow flange metal corrugated pipe air inlet; 16 is an SMC hollow flange; 18 is a sealed flexible expansion joint; 20 is a generator rotor; 21 is a metal three-way pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the utility model provides a generator rotor maintenance device for nuclear power plant, which comprises a metal bellows air inlet 1, a pipeline pressure regulator 4, a first branch and a second branch; two metal bellows gas outlets 12, two SMC hollow flange metal bellows gas inlets 14, and two SMC hollow flanges 16.
Gas passes through a pipeline pressure regulator 4 from a gas introducing pipeline through a metal corrugated pipe gas inlet 1 and then respectively enters a first branch and a second branch which are arranged on the left side and the right side; the two metal corrugated pipe air outlets 12 are respectively arranged on one side of the outlets of the first branch and the second branch; one end of each metal corrugated pipe air outlet 12, which is far away from the pipeline pressure regulator 4, is connected with an SMC hollow flange 16 after being connected with an SMC hollow flange metal corrugated pipe air inlet 14 through an air-entraining hose.
A manual regulating valve A2 and a manual regulating valve 3 with a pressure gauge are sequentially arranged between the metal corrugated pipe air inlet 1 and the pipeline pressure regulator 4.
A safety valve 11 is connected between the metal bellows gas inlet 1 and the manual regulating valve A2 through a metal three-way pipe 21.
The pipeline pressure regulator 4 is respectively connected with the first branch and the second branch through a metal three-way pipe 21.
One side of the first branch and one side of the second branch close to the pipeline pressure regulator 4 are respectively provided with a manual regulating valve C7, a check valve 8 and a flowmeter 10 in sequence. The check valve is used for preventing gas from flowing backwards.
The back of each SMC hollow flange 16 is provided with four bolt holes and is connected to the fan seat ring bolt holes of the generator rotor 20.
The generator rotor maintenance device for the nuclear power plant is further provided with sealed flexible expansion joints 18 at SMC hollow flanges 16 on two sides respectively, and the sealing of an air inlet channel of the generator rotor is realized through the fastening of the sealed flexible expansion joints 18.
The SMC hollow flange 16 on one side of the branch is connected with a fan seat ring bolt hole on the excitation side of the generator rotor 20 through a sealed flexible expansion joint 18 on the same side, so that compressed air is blown into the excitation side of the generator rotor through the branch;
the SMC hollow flange 16 on one side of the second branch is connected with a fan seat ring bolt hole on the steam side of the generator rotor 20 through a sealed flexible expansion joint 18 on the same side, so that compressed air is blown into the steam side of the generator rotor through the second branch.
Two semicircular metal hoops are respectively arranged at the head end and the tail end of each sealed flexible expansion joint 18, the semicircular metal hoops and the sealed flexible expansion joints 18 at the same side are integrally arranged through compression joint, and the sealed flexible expansion joints 18 are fastened by using long rod screws.
The method for maintaining the generator rotor for the nuclear power plant by using the generator rotor maintenance device for the nuclear power plant comprises the following steps:
s1: opening the manual regulating valve C7 of the branch I and the branch II;
s2: slowly opening a manual regulating ball valve A2, and slowly opening a manual regulating valve 3 with a pressure gauge;
s3: observing that the pressure of a manual regulating valve 3 with a pressure gauge does not exceed 5 kPa; observing that the flow meters 10 of the first branch and the second branch are consistent, and when the flow rate of the flow meter 10 in the first branch is greater than that of the flow meter 10 in the second branch, reducing the opening degree of the manual regulating valve C7 in the first branch; the branch circuit is the same;
and S4, checking the wind speed of the winding radial vent holes of the generator rotor 20 through an anemometer to ensure that the excitation side and the steam side are consistent.
The utility model discloses the beneficial effect who gains does:
1. easy to implement, convenient to operate and maintain;
2. the purpose of continuously dehumidifying the generator rotor is achieved;
3. the maintenance gas pressure can be monitored in real time and adjusted in real time;
4. the maintenance effect of isolating air by adopting the flexible expansion joint is more excellent; 5. the labor cost is saved, and the working period is shortened.
Claims (10)
1. The utility model provides a nuclear power plant is with generator rotor maintenance device which characterized in that: the device comprises a metal corrugated pipe air inlet (1), a pipeline pressure regulator (4), a branch I, a branch II, two metal corrugated pipe air outlets (12), two SMC hollow flange metal corrugated pipe air inlets (14) and two SMC hollow flanges (16); gas passes through a pipeline pressure regulator (4) from a gas-leading pipeline through a metal corrugated pipe gas inlet (1) and then respectively enters a first branch and a second branch which are arranged on the left side and the right side; the air outlets (12) of the two metal corrugated pipes are respectively arranged at one side of the outlets of the first branch and the second branch; one end of each metal corrugated pipe air outlet (12), which is far away from the pipeline pressure regulator (4), is connected with an SMC hollow flange (16) after being connected with an SMC hollow flange metal corrugated pipe air inlet (14) through an air-bleed hose.
2. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 1, wherein: a manual regulating valve A (2) and a manual regulating valve (3) with a pressure gauge are sequentially arranged between the metal corrugated pipe air inlet (1) and the pipeline pressure regulator (4).
3. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 2, wherein: a safety valve (11) is connected between the metal corrugated pipe air inlet (1) and the manual regulating valve A (2) through a metal three-way pipe (21).
4. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 3, wherein: the pipeline pressure regulator (4) is respectively connected with the first branch and the second branch through a metal three-way pipe (21).
5. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 4, wherein: one side of the first branch and one side of the second branch close to the pipeline pressure regulator (4) are respectively and sequentially provided with a manual regulating valve C (7), a check valve (8) and a flowmeter (10).
6. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 5, wherein: the back of each SMC hollow flange (16) is provided with four bolt holes and is connected with a fan seat ring bolt hole of a generator rotor (20).
7. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 6, wherein: the generator rotor maintenance device for the nuclear power plant is characterized in that sealing flexible expansion joints (18) are respectively arranged at SMC hollow flanges (16) on two sides, and the sealing of an air inlet channel of the generator rotor is realized through the fastening of the sealing flexible expansion joints (18).
8. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 7, wherein: the SMC hollow flange (16) on one side of the branch is connected with a ring bolt hole of a fan seat on the excitation side of a generator rotor (20) through a sealed flexible expansion joint (18) on the same side; the SMC hollow flange (16) on one side of the branch circuit II is connected with a steam side fan seat ring bolt hole of a generator rotor (20) through a sealed flexible expansion joint (18) on the same side.
9. The apparatus for servicing a rotor of a generator for a nuclear power plant of claim 8, wherein: two semicircular metal hoops are respectively arranged at the head end and the tail end of each sealed flexible expansion joint (18).
10. The apparatus for servicing a generator rotor for a nuclear power plant of claim 9, wherein: the semicircular metal hoop and the sealed flexible expansion joint (18) at the same side are arranged in an integrated manner by compression joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022655229.2U CN214480179U (en) | 2020-11-17 | 2020-11-17 | Generator rotor maintenance device for nuclear power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022655229.2U CN214480179U (en) | 2020-11-17 | 2020-11-17 | Generator rotor maintenance device for nuclear power plant |
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| CN214480179U true CN214480179U (en) | 2021-10-22 |
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| CN202022655229.2U Active CN214480179U (en) | 2020-11-17 | 2020-11-17 | Generator rotor maintenance device for nuclear power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332617A (en) * | 2020-11-17 | 2021-02-05 | 福建福清核电有限公司 | Generator rotor maintenance device and method for nuclear power plant |
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2020
- 2020-11-17 CN CN202022655229.2U patent/CN214480179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332617A (en) * | 2020-11-17 | 2021-02-05 | 福建福清核电有限公司 | Generator rotor maintenance device and method for nuclear power plant |
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