CN113394930A - Glue injection sealing device and method for end cover of generator of nuclear power station - Google Patents
Glue injection sealing device and method for end cover of generator of nuclear power station Download PDFInfo
- Publication number
- CN113394930A CN113394930A CN202110570442.XA CN202110570442A CN113394930A CN 113394930 A CN113394930 A CN 113394930A CN 202110570442 A CN202110570442 A CN 202110570442A CN 113394930 A CN113394930 A CN 113394930A
- Authority
- CN
- China
- Prior art keywords
- end cover
- glue injection
- injection port
- glue
- middle section
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003292 glue Substances 0.000 claims abstract description 256
- 238000002347 injection Methods 0.000 claims abstract description 215
- 239000007924 injection Substances 0.000 claims abstract description 215
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 7
- 239000000565 sealant Substances 0.000 claims description 44
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
- B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention provides a glue injection sealing device for a nuclear power station generator end cover, which comprises a glue injection nozzle, a transition joint and a glue injection gun which are sequentially connected, wherein the glue injection position of the generator end cover comprises an upper glue injection port on the outer circumference of the end cover, a left glue injection port on the middle section of an end cover flange, a right glue injection port on the middle section of the end cover flange and a lower glue injection port on the outer circumference of the end cover. The invention also provides a glue injection sealing method using the glue injection sealing device for the end cover of the nuclear power station generator. The invention can realize reliable sealing function of the generator sealing O-shaped ring and has good pressure maintaining effect. The glue injection quantity is guaranteed to meet the operation requirement, and the safe and stable operation of the generator is guaranteed.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a glue injection sealing device and method for an end cover of a generator of a nuclear power station.
Background
The end covers are arranged on two sides of the nuclear power generator and are used for supporting a generator rotor and sealing two ends of the generator to form a closed circulating ventilation system so as to prevent dust and foreign matters from entering the generator. The generator end cover is a hydrogen gas tight seal boundary. The hydrogen is used as the coolant of the generator, if hydrogen leaks, the hydrogen pressure in the generator is reduced, the cooling effect is poor, the temperature rise of each part of the generator is increased, the operation of the generator is influenced, the maintenance is enhanced, the hydrogen leakage amount is controlled, and the hydrogen needs to be charged in time. The end cover and the generator stator are sealed mainly by injecting the sealant, so that the sealant forms an annular loop, and the effect of sealing the O-shaped ring is achieved. If the glue injection pressure is insufficient or too large, the sealing effect is poor, and the sealing performance of the generator to hydrogen is affected.
Based on the problems in the prior art, an injection sealing device and method for an end cover of a generator of a nuclear power station are needed to be designed, so that the problem of hydrogen leakage of the end cover is effectively avoided or reduced.
Disclosure of Invention
The invention aims to design a glue injection sealing device and method for a generator end cover of a nuclear power station, which meet the glue injection operation requirement of a generator and increase the influence on the sealing effect of the generator end cover and a stator.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a nuclear power station generator end cover injecting glue sealing device, is including the injecting glue mouth, crossover sub and the injecting glue rifle that connect gradually, and the injecting glue position of generator end cover includes that the outer circumference of end cover goes up injecting glue mouth, end cover flange mid-section left injecting glue mouth, end cover flange mid-section right injecting glue mouth and the outer circumference of end cover pours glue mouth into.
The nuclear power station generator end cover glue injection sealing device is further provided with a plug for plugging the glue injection port on the outer circumference of the end cover, the left glue injection port on the middle section of the end cover flange, the right glue injection port on the middle section of the end cover flange and the glue injection port on the outer circumference of the end cover after glue injection is finished.
A glue injection sealing method using the glue injection sealing device for the end cover of the generator of the nuclear power station comprises the following steps:
the method comprises the following steps: assembling a glue injection nozzle, a transition joint and a glue injection gun;
step two: opening a glue injection port on the outer circumference of the end cover, a left glue injection port on the middle section of the flange of the end cover and a right glue injection port on the middle section of the flange of the end cover;
step three: connecting a glue pouring port on the outer circumference of the end cover with a glue pouring nozzle, and pouring sealant from the glue pouring port on the outer circumference of the end cover;
step four: when the sealant appears at the left glue injection port of the middle section of the end cover flange or at the right glue injection port of the middle section of the end cover flange and no bubble exists in the sealant, stopping injecting the glue;
step five: removing the glue injection nozzle from the glue injection port on the outer circumference of the end cover, closing the glue injection port on the outer circumference of the end cover, and plugging the glue injection port on the outer circumference of the end cover by using a plug;
step six: connecting the glue injection nozzle with the left glue injection port on the middle section of the end cover flange, injecting sealant, and opening the glue injection port on the outer circumference of the end cover;
step seven: when the sealant appears at the sealant injection port on the outer circumference of the end cover and no air bubble exists in the sealant, stopping injecting the sealant; closing the left glue injection port on the middle section of the end cover flange, and removing the glue injection nozzle from the left glue injection port on the middle section of the end cover flange;
step eight: connecting the glue injection nozzle with the right glue injection port of the middle section of the end cover flange, and injecting sealant;
step nine: when sealant appears at the glue injection port on the outer circumference of the end cover and no air bubbles exist in the glue, stopping injecting the glue, closing the glue injection port on the outer circumference of the end cover, and plugging the glue injection port on the outer circumference of the end cover by using a plug;
step ten: pressurizing and injecting glue from the left glue injection port of the middle section of the end cover flange or the right glue injection port of the middle section of the end cover flange until the sealant cannot be injected, starting pressure maintaining, and closing the left glue injection port of the middle section of the end cover flange or the right glue injection port of the middle section of the end cover flange after the pressure maintaining is finished;
step eleven: after the glue injection sealing work of the end cover of the generator is finished, the sealant forms a sealing loop, and the effect of sealing the O-shaped ring is achieved.
Further, in the fourth step, if the glue is discharged from the left glue injection port of the middle section of the end cover flange, the left glue injection port of the middle section of the end cover flange is closed; if the glue is discharged from the right glue injection port of the middle section of the end cover flange, closing the right glue injection port of the middle section of the end cover flange; when glue is injected from the glue injection port on the outer circumference of the end cover, the left glue injection port on the middle section of the end cover flange and the right glue injection port on the middle section of the end cover flange can discharge glue.
The seventh, eighth and ninth steps: glue injection can be respectively carried out from the left glue injection port on the middle section of the end cover flange and the right glue injection port on the middle section of the end cover flange, so that glue can be discharged from the glue injection ports on the outer circumference of the end cover, and the glue injection ports can be closed.
In the step ten, the pressure maintaining pressure is 5MPa, the pressure maintaining time is 30 minutes, and the pressure is unchanged.
In the step ten, if the glue is injected from the left glue injection port on the middle section of the end cover flange in a pressurizing manner, the right glue injection port on the middle section of the end cover flange is closed, and the left glue injection port on the middle section of the end cover flange is closed after pressure maintaining is finished.
In the step ten, if the glue is injected from the right glue injection port of the middle section of the end cover flange in a pressurizing manner, the left glue injection port of the middle section of the end cover flange is closed, and the right glue injection port of the middle section of the end cover flange is closed after pressure maintaining is finished.
The beneficial effects obtained by the invention are as follows:
1) the generator sealing O-shaped ring can realize reliable sealing effect of the generator sealing O-shaped ring, and has good pressure maintaining effect.
2) The glue injection method increases the practicability, and the glue injection process is convenient to operate. The glue injection operation can be completed only by 2 mechanical professionals and two workers in cooperation.
3) The glue injection quantity can be guaranteed to meet the operation requirement, and the safe and stable operation of the generator is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of a glue injection sealing device for an end cover of a generator of a nuclear power station;
FIG. 2 is a schematic diagram of a glue injection position of a generator end cover;
fig. 3 is a schematic view of a sealing loop after glue injection.
In the figure: 1 is a transition joint, and 2 is a glue injection gun; 3, a glue injection nozzle, A, B, C and C, wherein A is a glue injection opening on the outer circumference of the end cover, B is a left glue injection opening on the middle section of the flange of the end cover, and C is a right glue injection opening on the middle section of the flange of the end cover; d is a glue pouring opening at the outer circumference of the end cover.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1, the invention provides a glue injection sealing device for an end cover of a generator of a nuclear power station, which comprises a glue injection nozzle 3, a transition joint 1 and a glue injection gun 2 which are connected in sequence, wherein the glue injection position of the end cover of the generator comprises an upper glue injection port A on the outer circumference of the end cover, a left glue injection port B on the middle section of an end cover flange, a right glue injection port C on the middle section of the end cover flange and a lower glue injection port D on the outer circumference of the end cover.
The end cover glue injection sealing device of the nuclear power station generator is also provided with a plug for plugging a glue injection port A on the outer circumference of the end cover, a left glue injection port B on the middle section of the end cover flange, a right glue injection port C on the middle section of the end cover flange and a glue injection port D on the outer circumference of the end cover after glue injection is finished.
A glue injection sealing method using the glue injection sealing device for the end cover of the generator of the nuclear power station comprises the following steps:
the method comprises the following steps: assembling a glue injection nozzle 3, a transition joint 1 and a glue injection gun 2;
step two: opening a glue injection port D on the outer circumference of the end cover, a left glue injection port B on the middle section of the flange of the end cover and a right glue injection port C on the middle section of the flange of the end cover;
step three: connecting a glue pouring port D on the outer circumference of the end cover with the glue pouring nozzle 3, and pouring sealant from the glue pouring port D on the outer circumference of the end cover;
step four: when the sealant appears in the middle split left sealant injection port B or the middle split right sealant injection port C of the end cover flange and no bubble exists in the sealant, stopping injecting the sealant;
step five: the glue injection nozzle 3 is detached from the glue injection port D on the outer circumference of the end cover, the glue injection port D on the outer circumference of the end cover is closed, and the glue injection port D on the outer circumference of the end cover is plugged by a plug;
step six: connecting the glue injection nozzle 3 with a left glue injection port B on the middle section of the end cover flange, injecting sealant, and opening a glue injection port A on the outer circumference of the end cover;
step seven: when the sealant appears at the sealant injection port A on the outer circumference of the end cover and no air bubble exists in the sealant, stopping injecting the sealant; closing the end cover flange bisection left glue injection port B, and removing the glue injection nozzle 3 from the end cover flange bisection left glue injection port B;
step eight: connecting the glue injection nozzle 3 with the end cover flange middle split right glue injection port C, and injecting sealant;
step nine: when sealant appears at the glue injection port A on the outer circumference of the end cover and no air bubbles exist in the glue, stopping injecting the glue, closing the glue injection port A on the outer circumference of the end cover, and plugging the glue injection port A on the outer circumference of the end cover by using a plug;
step ten: pressurizing and injecting glue from the left glue injection port B of the middle section of the end cover flange or the right glue injection port C of the middle section of the end cover flange until sealant cannot be injected, starting pressure maintaining, and closing the left glue injection port B of the middle section of the end cover flange or the right glue injection port C of the middle section of the end cover flange after pressure maintaining is finished;
step eleven: after the glue injection sealing work of the end cover of the generator is finished, the sealant forms a sealing loop, and the effect of sealing the O-shaped ring is achieved.
Further, in the fourth step, if the left glue injection port B of the middle section of the end cover flange is subjected to glue discharge, the left glue injection port B of the middle section of the end cover flange is closed; if the right glue injection port C of the middle section of the end cover flange is out of glue, closing the right glue injection port C of the middle section of the end cover flange; when glue is injected from the glue injection port D on the outer circumference of the end cover, the left glue injection port B of the middle section of the end cover flange and the right glue injection port C of the middle section of the end cover flange can discharge glue.
The seventh, eighth and ninth steps: glue is injected from the end cover flange split left glue injection port B and the end cover flange split right glue injection port C respectively, so that glue can be discharged from the glue injection port A on the outer circumference of the end cover, and the glue injection port A is closed.
In the step ten, the pressure maintaining pressure is 5MPa, the pressure maintaining time is 30 minutes, and the pressure is unchanged.
In the step ten, if the left glue injection port B is injected by pressurizing from the middle section of the end cover flange, the right glue injection port C is closed, and the left glue injection port B is closed after pressure maintaining.
In the step ten, if the right glue injection port C is injected by pressurizing from the middle section of the end cover flange, the left glue injection port B is closed, and the right glue injection port C is closed after pressure maintaining.
The beneficial effects obtained by the invention are as follows:
1) the generator sealing O-shaped ring can realize reliable sealing effect of the generator sealing O-shaped ring, and has good pressure maintaining effect.
2) The glue injection method increases the practicability, and the glue injection process is convenient to operate. The glue injection operation can be completed only by 2 mechanical professionals and two workers in cooperation.
3) The glue injection quantity can be guaranteed to meet the operation requirement, and the safe and stable operation of the generator is guaranteed.
Claims (8)
1. The utility model provides a nuclear power station generator end cover injecting glue sealing device which characterized in that: comprises a glue injection nozzle (3), a transition joint (1) and a glue injection gun (2) which are connected in sequence; the glue injection position of the generator end cover comprises an upper glue injection port (A) on the outer circumference of the end cover, a left glue injection port (B) on the middle section of the end cover flange, a right glue injection port (C) on the middle section of the end cover flange and a lower glue injection port (D) on the outer circumference of the end cover.
2. The glue injection sealing device for the end cover of the generator of the nuclear power station as claimed in claim 1, wherein: the nuclear power station generator end cover glue injection sealing device is further provided with a plug for plugging a glue injection port (A) in the outer circumference of the end cover, a left glue injection port (B) in the middle section of the end cover flange, a right glue injection port (C) in the middle section of the end cover flange and a glue injection port (D) in the outer circumference of the end cover after glue injection is finished.
3. The glue injection sealing method for the end cover of the generator of the nuclear power plant by using the glue injection sealing device for the end cover of the generator of the nuclear power plant as claimed in claim 2, is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: assembling a glue injection nozzle (3), a transition joint (1) and a glue injection gun (2);
step two: opening a glue injection port (D) on the outer circumference of the end cover, a left glue injection port (B) on the middle section of the flange of the end cover and a right glue injection port (C) on the middle section of the flange of the end cover;
step three: connecting a glue pouring port (D) at the outer circumference of the end cover with the glue injection nozzle (3), and injecting sealant from the glue pouring port (D) at the outer circumference of the end cover;
step four: when the sealant appears in the middle split left sealant injection port (B) of the end cover flange or the middle split right sealant injection port (C) of the end cover flange and no bubble exists in the sealant, stopping injecting the sealant;
step five: removing the glue injection nozzle (3) from the glue injection port (D) on the outer circumference of the end cover, closing the glue injection port (D) on the outer circumference of the end cover, and plugging the glue injection port (D) on the outer circumference of the end cover by using a plug;
step six: connecting the glue injection nozzle (3) with a left glue injection port (B) on the middle section of the end cover flange, injecting sealant, and opening the glue injection port (A) on the outer circumference of the end cover;
step seven: when the sealant appears at the sealant injection port (A) on the outer circumference of the end cover and no air bubble exists in the sealant, stopping injecting the sealant; closing the end cover flange bisection left glue injection port (B), and removing the glue injection nozzle (3) from the end cover flange bisection left glue injection port (B);
step eight: connecting the glue injection nozzle (3) with the right glue injection port (C) of the middle section of the end cover flange, and injecting sealant;
step nine: when sealant appears in the glue injection port (A) on the outer circumference of the end cover and no air bubble exists in the glue, stopping injecting the glue, closing the glue injection port (A) on the outer circumference of the end cover, and plugging the glue injection port (A) on the outer circumference of the end cover by using a plug;
step ten: pressurizing and injecting glue from the left glue injection port (B) of the middle section of the end cover flange or the right glue injection port (C) of the middle section of the end cover flange until the sealant cannot be injected, starting pressure maintaining, and closing the left glue injection port (B) of the middle section of the end cover flange or the right glue injection port (C) of the middle section of the end cover flange after the pressure maintaining is finished;
step eleven: after the glue injection sealing work of the end cover of the generator is finished, the sealant forms a sealing loop, and the effect of sealing the O-shaped ring is achieved.
4. The glue injection sealing method for the end cover of the generator of the nuclear power station as claimed in claim 3, wherein: in the fourth step, if the left glue injection port (B) of the end cover flange middle section is subjected to glue discharge, the left glue injection port (B) of the end cover flange middle section is closed; if the end cover flange middle section right glue injection port (C) is out of glue, closing the end cover flange middle section right glue injection port (C); when glue is injected from the glue injection port D on the outer circumference of the end cover, the left glue injection port (B) on the middle section of the end cover flange and the right glue injection port (C) on the middle section of the end cover flange can discharge glue.
5. The glue injection sealing method for the end cover of the generator of the nuclear power station as claimed in claim 4, wherein: and seventhly, eighthly and nineteenth, respectively injecting glue from the left glue injection port (B) of the middle section of the end cover flange and the right glue injection port (C) of the middle section of the end cover flange to enable the glue injection port (A) on the outer circumference of the end cover to discharge glue as a condition for closing the glue injection port (A).
6. The glue injection sealing method for the end cover of the generator of the nuclear power plant as claimed in claim 3 or 5, wherein: and step ten, keeping the pressure at 5MPa for 30 minutes, and keeping the pressure unchanged.
7. The glue injection sealing method for the end cover of the generator of the nuclear power station as claimed in claim 6, wherein: and step ten, if the left glue injection port (B) is split from the end cover flange, pressurizing and injecting glue, sealing the right glue injection port (C) of the end cover flange, and sealing the left glue injection port (B) of the end cover flange after pressure maintaining is finished.
8. The glue injection sealing method for the end cover of the generator of the nuclear power station as claimed in claim 7, wherein: and step ten, if the right glue injection port (C) is split from the end cover flange, pressurizing and injecting glue, sealing the left glue injection port (B) of the split of the end cover flange, and sealing the right glue injection port (C) of the split of the end cover flange after pressure maintaining is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570442.XA CN113394930A (en) | 2021-05-25 | 2021-05-25 | Glue injection sealing device and method for end cover of generator of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570442.XA CN113394930A (en) | 2021-05-25 | 2021-05-25 | Glue injection sealing device and method for end cover of generator of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113394930A true CN113394930A (en) | 2021-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110570442.XA Pending CN113394930A (en) | 2021-05-25 | 2021-05-25 | Glue injection sealing device and method for end cover of generator of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113394930A (en) |
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Application publication date: 20210914 |
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| RJ01 | Rejection of invention patent application after publication |