CN113624406B - Generator airtight test device and method for reducing overhaul period of turbine unit - Google Patents
Generator airtight test device and method for reducing overhaul period of turbine unit Download PDFInfo
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- CN113624406B CN113624406B CN202110919479.9A CN202110919479A CN113624406B CN 113624406 B CN113624406 B CN 113624406B CN 202110919479 A CN202110919479 A CN 202110919479A CN 113624406 B CN113624406 B CN 113624406B
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 72
- 239000001257 hydrogen Substances 0.000 claims abstract description 72
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000012423 maintenance Methods 0.000 claims abstract description 33
- 239000003921 oil Substances 0.000 claims description 475
- 238000007789 sealing Methods 0.000 claims description 94
- 239000010687 lubricating oil Substances 0.000 claims description 44
- 238000005086 pumping Methods 0.000 claims description 19
- 238000005461 lubrication Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- General Physics & Mathematics (AREA)
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Abstract
The invention provides a generator airtight test device and a method for reducing the maintenance period of a turbine unit, and belongs to the technical field of turbine generator unit maintenance. The generator airtight test device and the method for reducing the maintenance period of the turbine unit have the technical effects that the inside of the hydrogen oil separator can be supplied with oil, the sealed oil pump can normally operate, the normal operation of the generator airtight test is not influenced, and the maintenance period of the turbine unit is reduced.
Description
Technical Field
The invention belongs to the technical field of maintenance of steam turbine generator units, and particularly relates to a generator airtight test device and method for reducing maintenance period of a steam turbine unit.
Background
Before the hydrogen filling replacement of the generator, the complete machine airtight test of the generator must be performed, before the test, the hydrogen and carbon dioxide pipelines of the generator should be thoroughly cleaned, and the external water pipelines of the stator of the generator, the sealing oil system and the oil pipelines between the generator and the oil system assembly should be installed and cleaned. When the airtight test of the whole generator is carried out, the sealing oil system must be put into use in advance to prevent hydrogen leakage, and the sealing oil system and the water system are further debugged under the rated pressure.
The generator airtight test is a test which needs to be carried out after the maintenance of the steam turbine generator unit, and the test condition is that the test can be carried out after the complete maintenance and operation of a lubricating oil system and a sealing oil system of the steam turbine, and the sequence of the two working procedures cannot be changed; and the method also requires that the reinstallation of each sealed bearing bush of the generator is completed and the maintenance and reinstallation of all bearing bushes of the steam turbine are completed, so that the lubricating oil system works normally and supplies oil to each sealed bearing bush. However, the return oil of each sealing bush enters the hydrogen oil separator, the hydrogen oil separator is a hydrogen oil separating device for collecting the return oil of each bush, the hydrogen oil separator is an oil source of the sealing oil pump, when the hydrogen oil separator is not filled with oil, the sealing oil pump cannot operate, and the airtight test of the generator cannot operate. When oil exists in the hydrogen oil separator, the sealed oil pump can normally operate, and the sealed oil can be normally supplied, so that the airtight test of the generator can be performed, and in the maintenance technology of the turbo generator set in the 300MW prior art, the operation procedure and the flow of the airtight test of the generator are carried out, and the maintenance period is as long as 50 days.
Disclosure of Invention
The invention aims to provide a generator airtight test device and method for reducing the maintenance period of a turbine unit, and aims to solve the technical problems that a sealed oil pump cannot be operated when the inside of a hydrogen oil separator is short of oil before the generator airtight test, and the generator airtight test cannot be performed.
In order to achieve the above purpose, the invention adopts the following technical scheme: the generator airtight test device for reducing the maintenance period of the turbine unit comprises a test device body, a lubricating oil system, a sealing oil system, an oil inlet pipe, an oil inlet pump and a valve; the test device body is suitable for testing the air tightness of the generator; the lubrication system is adapted to provide lubrication to the generator; the sealing oil system is suitable for providing sealing oil for the generator sealing bearing bush; one end of the oil inlet pipe is communicated with the hydrogen oil separator, and the other end of the oil inlet pipe is communicated with the oil purifying box of the lubricating oil system; the oil inlet pump is arranged on the oil inlet pipe and is used for extracting oil in the oil purifying box and pumping the oil into the hydrogen oil separator, so that the oil and the sealed oil pump in the hydrogen oil separator normally operate so as to be suitable for performing an airtight test of the generator; the valve is arranged on the oil inlet pipe and positioned at the oil outlet end of the oil inlet pump, and is suitable for controlling the oil inlet amount in the oil inlet pipe.
In one possible implementation, the generator airtight test apparatus further comprises a controller electrically connected to the oil feed pump and the valve, respectively, the controller being adapted to control operation of the oil feed pump and the valve to control the amount of purified oil delivered into the hydrogen oil separator.
In one possible implementation manner, a liquid level sensor is arranged in the hydrogen oil separator, the liquid level sensor is electrically connected with the controller, the controller is further suitable for receiving oil level information monitored by the liquid level sensor, and is further electrically connected with a display screen, and the oil level information in the hydrogen oil separator can be observed on the display screen.
In one possible implementation manner, the sealing oil system comprises a sealing oil inlet pipe, a sealing oil outlet pipe and a sealing valve, wherein one end of the sealing oil inlet pipe is communicated with the hydrogen oil separator, the other end of the sealing oil inlet pipe is communicated with the sealing oil pump, one end of the sealing oil outlet pipe is communicated with the sealing oil pump, the other end of the sealing oil outlet pipe is communicated with each sealing bearing bush of the generator, the sealing valve is arranged on the sealing oil inlet pipe and is suitable for controlling the conveying amount of sealing oil, and the sealing oil pump is suitable for pumping the sealing oil to each sealing bearing bush of the generator.
In one possible implementation manner, each sealing bush of the generator is provided with an oil receiving pipe, the oil outlet end of the sealing oil inlet pipe is provided with a plurality of branch pipes, and the plurality of branch pipes are respectively communicated with the plurality of oil receiving pipes so as to convey sealing oil to each sealing bush of the generator.
In one possible implementation, the lubrication oil system includes a main oil tank having one end in communication with the hydrogen oil separator, a dirty oil tank in communication with the main oil tank, the clean oil tank in communication with the main oil tank, the main oil tank adapted to communicate with an electric generator and provide lubrication oil.
In one possible implementation, a filter is provided between the main tank and the dirty tank, the filter being adapted to filter impurities in the lubricating oil output from the main tank, preventing the impurities from entering the dirty tank.
In one possible implementation, an oil pumping assembly is provided between the clean oil tank and the main oil tank, and the oil pumping assembly is used for pumping clean oil in the clean oil tank into the main oil tank.
In one possible implementation manner, the main oil tank, the dirty oil tank and the clean oil tank are inserted with oil level alarms, the oil level alarms are electrically connected with the controller, a plurality of oil level height thresholds are preset on the controller, and when the oil level alarms detect that the oil levels of the main oil tank, the dirty oil tank and the clean oil tank are higher than the oil level height thresholds, the controller commands the oil level alarms to send alarm signals.
The generator airtight test device for reducing the maintenance period of the turbine unit has the beneficial effects that: compared with the prior art, the generator airtight test device for reducing the maintenance period of the steam turbine unit comprises a test device body, a lubricating oil system, a sealing oil system, an oil inlet pipe, an oil inlet pump and a valve; the test device body is suitable for testing the air tightness of the generator; the lubricating oil system is suitable for providing lubricating oil for the generator, the sealing oil system is suitable for providing sealing oil for a sealing bearing bush of the generator, one end of the oil inlet pipe is communicated with the hydrogen oil separator, and the other end of the oil inlet pipe is communicated with a clean oil tank of the lubricating oil system; the oil inlet pump is arranged on the oil inlet pipe and used for extracting oil in the oil purifying tank and pumping the oil into the hydrogen oil separator, so that the hydrogen oil separator is provided with oil and a sealed oil pump to normally operate so as to be suitable for performing an airtight test of the generator, the valve is arranged on the oil inlet pipe and is positioned at the oil outlet end of the oil inlet pump and is suitable for controlling the oil inlet amount in the oil inlet pipe, the technical problems that the airtight test of the generator cannot be performed when the inside of the hydrogen oil separator is short of oil before the airtight test of the generator and the sealed oil pump cannot operate are solved, the airtight test of the generator can supply oil for the inside of the hydrogen oil separator, the sealed oil pump can normally operate, the airtight test of the generator is not influenced, and the maintenance period of the turbine set is shortened.
The invention also provides a generator airtight test method for reducing the maintenance period of the turbine unit, which comprises the following steps:
the air tightness of the generator is tested through the test device body, the lubricating oil system provides lubricating oil for the generator, and the sealing oil system provides sealing oil for the sealing bearing bush of the generator;
an oil inlet pipe is arranged between an oil purifying tank and a hydrogen oil separator of the lubricating oil system, and two ends of the oil inlet pipe are respectively communicated with the oil purifying tank and the hydrogen oil separator;
an oil inlet pump is arranged on the oil inlet pipe, so that lubricating oil in the oil purifying box is conveyed into the hydrogen oil separator after the oil inlet pump runs, and when oil exists in the hydrogen oil separator, the sealed oil pump can normally run and is suitable for performing a generator airtight test;
and a valve is arranged on the oil inlet pipe, so that the valve is positioned at the oil outlet end of the oil inlet pump, and the valve controls the oil inlet amount in the oil inlet pipe.
The generator airtight test method for reducing the maintenance period of the turbine unit has the beneficial effects that: the oil inlet pipe is communicated with the oil purifying tank and the hydrogen oil separator, lubricating oil is pumped through the oil inlet pump and supplied to the hydrogen oil separator, and the flow of the lubricating oil is controlled through the valve, so that the oil can be supplied to the inside of the hydrogen oil separator, the sealed oil pump can normally operate, the normal operation of the airtight test of the generator is not influenced, and the technical effect of the overhaul period of the turbine set is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a generator airtight test apparatus (including a lubricating oil system and a sealing oil system) for reducing a maintenance period of a turbine set according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sealing oil system of a generator airtight test device for reducing a maintenance period of a turbine unit according to an embodiment of the present invention.
Reference numerals illustrate:
1. an oil inlet pipe; 2. an oil feed pump; 3. a valve; 4. sealing the bearing bush; 5. a hydrogen oil separator; 6. a clean oil tank; 7. sealing an oil pump; 8. other bearing bushes of the steam turbine; 9. sealing the oil inlet pipe; 10. sealing the oil outlet pipe; 11. sealing the valve; 12. a main oil tank; 13. dirty oil tanks.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 2, an airtight test apparatus for a generator for reducing a maintenance period of a turbine unit according to the present invention will now be described. The generator airtight test device for reducing the maintenance period of the turbine unit comprises a test device body, a lubricating oil system, a sealing oil system, an oil inlet pipe 1, an oil inlet pump 2 and a valve 3; the test device body is suitable for testing the air tightness of the generator; the lubrication system is adapted to provide lubrication to the generator; the sealing oil system is adapted to provide sealing oil to the generator sealing bush 4; one end of the oil inlet pipe 1 is communicated with the hydrogen oil separator 5, and the other end is communicated with the oil purifying box 6 of the lubricating oil system; the oil inlet pump 2 is arranged on the oil inlet pipe 1 and is used for pumping oil in the clean oil tank 6 and pumping the oil into the hydrogen oil separator 5, so that the oil in the hydrogen oil separator 5 and the sealed oil pump 7 normally operate to be suitable for performing an airtight test of the generator; the valve 3 is arranged on the oil inlet pipe 1 and positioned at the oil outlet end of the oil inlet pump 2, and is suitable for controlling the oil inlet amount in the oil inlet pipe 1.
Compared with the prior art, the generator airtight test device for reducing the maintenance period of the turbine unit comprises a test device body, a lubricating oil system, a sealing oil system, an oil inlet pipe 1, an oil inlet pump 2 and a valve 3; the test device body is suitable for testing the air tightness of the generator; the lubricating oil system is suitable for providing lubricating oil for the generator, the sealing oil system is suitable for providing sealing oil for the generator sealing bearing bush 4, one end of the oil inlet pipe 1 is communicated with the hydrogen oil separator 5, and the other end is communicated with the oil purifying box 6 of the lubricating oil system; the oil inlet pump 2 is arranged on the oil inlet pipe 1 and is used for extracting oil in the clean oil tank 6 and pumping the oil into the hydrogen oil separator 5, so that the oil in the hydrogen oil separator 5 and the sealed oil pump 7 can normally operate to be suitable for performing an airtight test of a generator, the valve 3 is arranged on the oil inlet pipe 1 and is positioned at the oil outlet end of the oil inlet pump 2 and is suitable for controlling the oil inlet amount in the oil inlet pipe 1, the technical problems that the internal oil shortage of the hydrogen oil separator 5 before the airtight test of the generator cannot be performed when the sealed oil pump 7 is not operated and the airtight test of the generator cannot be performed are solved, the technical effects that the internal oil supply of the hydrogen oil separator 5 can be performed, the sealed oil pump 7 can normally operate, the normal operation of the airtight test of the generator is not influenced, and the maintenance period of a turbine set is reduced are achieved.
The test device body, the lubricating oil system, the product structure, the arrangement mode, the operation principle and the like of the sealing oil system all adopt the prior art, and specific steps and test devices for the air tightness test can be referred to the prior art, so that the description is omitted here. The invention has the innovation point that the oil inlet pipe 1, the oil inlet pump 2 and the valve 3 are added on the basis of the original test device, and the purpose is to pump the lubricating oil in the clean oil tank 6 into the hydrogen oil separator 5, so that the oil in the hydrogen oil separator 5 is not lacked, the sealed oil pump 7 can normally run, the condition is provided for the airtight test of the generator, the maintenance of a lubricating oil system is not needed to be finished, the airtight test of the generator can be carried out after the rotation of each bearing bush is finished, and the oil inlets which are not installed and finished on other bearing bushes of the hydrogen oil separator 5 are also plugged. The test device body is not shown in the figures.
Compared with the process of conveying oil into the hydrogen oil separator 5 through the sealing bearing bush 4, the process of overhauling the bearing bush of the turbine and the process of airtight test are carried out simultaneously by the mode of actively supplying oil into the hydrogen oil separator 5, the process of overhauling the bearing bush of the turbine must be carried out simultaneously according to the sequence, the time is saved, and the overhauling period of the turbine unit is reduced by at least 2 natural days according to the measurement and calculation after implementation.
In fig. 1, the sealing oil system can supply oil to other bearing bushes 8 on the turbine besides supplying oil to each bearing bush of the generator, so that return oil of the other bearing bushes 8 on the turbine is also conveyed into the hydrogen-oil separator 5.
In some embodiments, referring to fig. 1-2, the generator tightness test apparatus further comprises a controller electrically connected to the oil feed pump 2 and the valve 3, respectively, the controller being adapted to control the operation of the oil feed pump 2 and the valve 3 to control the delivery of clean oil into the hydrogen separator 5. The controller is internally provided with a PLC control module, the opening time or the opening frequency of the oil inlet pump 2 and the valve 3 can be preset on the controller, the lubricating oil in the oil purifying tank 6 can be automatically supplied to the inside of the hydrogen oil separator 5, the overhaul period of the steam turbine set is greatly reduced, and the steam turbine set is put into operation in advance. The above-mentioned controller is not shown in the figure.
Specifically, a plurality of control buttons are arranged on the controller, the oil inlet pump 2 and the valve 3 are provided with corresponding control buttons, and the oil inlet operation to the hydrogen oil separator 5 can be controlled by operating the control buttons. The valve 3 is an electromagnetic valve and is an electric control valve 3.
In some embodiments, referring to fig. 1-2, a liquid level sensor is disposed in the hydrogen-oil separator 5, the liquid level sensor is electrically connected to a controller, the controller is further adapted to receive the oil level information monitored by the liquid level sensor, and is further electrically connected to a display screen, on which the oil level information in the hydrogen-oil separator 5 can be observed. The oil level change in the hydrogen oil separator 5 can be monitored in real time through the liquid level sensor, signals are sent to the controller in real time, and the oil level information can be observed at any time through the display screen, so that the oil inlet of the oil inlet pump 2, the opening and closing of the valve 3 and the like can be controlled at any time. The above-described level sensor and display screen are not shown in the figures and are easily understood.
In some embodiments, referring to fig. 1 to 2, the seal oil system includes a seal oil inlet pipe 9, a seal oil outlet pipe 10 and a seal valve 11, one end of the seal oil inlet pipe 9 is communicated with the hydrogen oil separator 5, the other end is communicated with the seal oil pump 7, one end of the seal oil outlet pipe 10 is communicated with the seal oil pump 7, the other end is communicated with each seal bush 4 of the generator, the seal valve 11 is arranged on the seal oil inlet pipe 9 and is suitable for controlling the conveying amount of seal oil, and the seal oil pump 7 is suitable for pumping seal oil to each seal bush 4 of the generator.
The lubricating oil is conveyed into the hydrogen oil separator 5 through the oil inlet pipe 1, so that the normal operation of the sealed oil pump 7 can be ensured, and conditions are created for the airtight test of the generator, and the airtight test of the generator can be performed.
In some embodiments, referring to fig. 1 to 2, oil receiving pipes are disposed on each sealing bush 4 of the generator, and a plurality of branch pipes are disposed at the oil outlet end of the sealing oil inlet pipe 9 and are respectively communicated with the plurality of oil receiving pipes so as to convey sealing oil to each sealing bush 4 of the generator.
The oil receiving pipe is not shown in the figure, and can be seen from the structure or the arrangement mode of a common oil receiving pipe, the outer end is provided with a connecting part, the connection can be realized, the function of the oil receiving pipe is to receive sealing oil, and the sealing oil can conveniently enter the sealing bearing bush 4.
In some embodiments, referring to fig. 1-2, the lubrication system includes a main tank 12 having one end in communication with the hydrogen oil separator 5, a dirty tank 13 in communication with the main tank 12, the clean tank 6 in communication with the main tank 12, the main tank 12 adapted to communicate with an electrical generator and provide lubrication oil. The dirty oil tank 13 is used for containing dirty oil, and the main oil tank 12 is used for containing clean and good-quality lubricating oil, and is used for providing lubricating oil for a generator lubricating oil path. The lubrication oil system in the prior art also includes other structures, to which reference is made in use, and which are not described herein.
Specifically, the dirty oil tank 13 and the clean oil tank 6 are also mutually communicated, and clean oil can flow into the clean oil tank 6 after impurities, dirty oil and the like in the dirty oil tank 13 are treated by treatment equipment in the prior art.
In some embodiments, referring to fig. 1-2, a filter is disposed between the main oil tank 12 and the dirty oil tank 13, and is adapted to filter impurities in the lubricating oil output from the main oil tank 12, and prevent the impurities from entering the dirty oil tank 13. The filter may be one of the prior art, and may be used to filter the impurities, dirty oil, etc. in the main tank 12 and then to convey the impurities, dirty oil, etc. to the dirty oil tank 13.
Specifically, the filter is electrically connected to the controller, and the operation of the filter can be controlled by the controller, and the filter is not shown in the figure.
In some embodiments, referring to fig. 1-2, a pumping assembly is provided between the clean oil tank 6 and the main oil tank 12, the pumping assembly being configured to pump clean oil from the clean oil tank 6 into the main oil tank 12. The oil pumping unit is a type of oil pump used in the prior art, such as an oil pump or the like, which pumps the absolute oil in the absolute oil tank 6 into the main oil tank 12 or when the amount of the lubricant in the main oil tank 12 is small, and is not shown in the drawings.
Specifically, the oil pumping assembly is electrically connected with the controller, and the operation of the oil pumping assembly can be controlled through the controller.
In some embodiments, referring to fig. 1 to 2, the main oil tank 12, the dirty oil tank 13 and the clean oil tank 6 are respectively plugged with an oil level alarm, the oil level alarm is electrically connected with a controller, a plurality of oil level height thresholds are preset on the controller, and when the oil level alarm detects that the oil levels of the main oil tank 12, the dirty oil tank 13 and the clean oil tank 6 are higher than the oil level height thresholds, the controller instructs the oil level alarm to send an alarm signal.
Specifically, since the oil level inside the main oil tank 12, the dirty oil tank 13 and the clean oil tank 6 may be the same or different, the oil level is monitored by providing a plurality of oil level alarms (which may be prior art products), and compared with an oil level threshold value set on the controller (the comparison is far away, see prior art), if the oil level is higher than the oil level threshold value, the controller instructs the oil level alarms to send an alarm signal.
Specifically, the oil level alarm is connected with an audible and visual alarm, and the audible and visual alarm can send out sound and photoelectric alarm signals so as to remind staff of paying attention.
The invention also provides a generator airtight test method for reducing the maintenance period of the turbine unit, which comprises the following steps: the air tightness of the generator is tested through the test device body, the lubricating oil system provides lubricating oil for the generator, and the sealing oil system provides sealing oil for the generator sealing bearing bush 4;
an oil inlet pipe 1 is arranged between an oil purifying tank 6 and a hydrogen oil separator 5 of the lubricating oil system, and two ends of the oil inlet pipe 1 are respectively communicated with the oil purifying tank 6 and the hydrogen oil separator 5;
an oil inlet pump 2 is arranged on the oil inlet pipe 1, so that lubricating oil in an oil purifying box 6 is conveyed into a hydrogen oil separator 5 after the oil inlet pump 2 runs, and when oil exists in the hydrogen oil separator 5, a sealed oil pump 7 can normally run and is suitable for performing an airtight test of a generator;
the valve 3 is arranged on the oil inlet pipe 1, so that the valve 3 is positioned at the oil outlet end of the oil inlet pump 2, and the valve 3 controls the oil inlet amount in the oil inlet pipe 1.
The generator airtight test method for reducing the maintenance period of the turbine unit has the beneficial effects that: the oil inlet pipe 1 is used for communicating the oil purifying tank 6 with the hydrogen oil separator 5, the oil inlet pump 2 is used for pumping lubricating oil and supplying the lubricating oil to the hydrogen oil separator 5, the valve 3 is used for controlling the flow of the lubricating oil, the oil can be supplied to the hydrogen oil separator 5, the sealed oil pump 7 can normally operate, the normal operation of the airtight test of the generator is not influenced, and the technical effect of reducing the overhaul period of the turbine set is achieved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. An airtight test device for a generator for reducing the maintenance period of a turbine unit, comprising:
the test device body is suitable for testing the air tightness of the generator;
a lubrication oil system adapted to provide lubrication oil to the generator;
the sealing oil system is suitable for providing sealing oil for the sealing bearing bush of the generator;
one end of the oil inlet pipe is communicated with the hydrogen oil separator, and the other end of the oil inlet pipe is communicated with the oil purifying box of the lubricating oil system;
the oil inlet pump is arranged on the oil inlet pipe and is used for extracting oil in the oil purifying box and pumping the oil into the hydrogen oil separator, so that the oil and the sealed oil pump in the hydrogen oil separator normally operate to be suitable for performing an airtight test of the generator; and
the valve is arranged on the oil inlet pipe and positioned at the oil outlet end of the oil inlet pump and is suitable for controlling the oil inlet amount in the oil inlet pipe;
the oil separator also comprises a controller which is respectively and electrically connected with the oil inlet pump and the valve, and the controller is suitable for controlling the operation of the oil inlet pump and the valve so as to control the delivery quantity of clean oil into the hydrogen oil separator.
2. The air tightness test device for the generator for reducing the maintenance period of the steam turbine unit according to claim 1, wherein a liquid level sensor is arranged in the hydrogen oil separator, the liquid level sensor is electrically connected with the controller, the controller is further suitable for receiving oil level information monitored by the liquid level sensor, the controller is further electrically connected with a display screen, and the oil level information in the hydrogen oil separator can be observed on the display screen.
3. The generator airtight test device for reducing the maintenance period of a steam turbine unit according to claim 1, wherein the sealing oil system comprises a sealing oil inlet pipe, a sealing oil outlet pipe and a sealing valve, one end of the sealing oil inlet pipe is communicated with the hydrogen oil separator, the other end of the sealing oil inlet pipe is communicated with the sealing oil pump, one end of the sealing oil outlet pipe is communicated with the sealing oil pump, the other end of the sealing oil outlet pipe is communicated with each sealing bearing bush of the generator, the sealing valve is arranged on the sealing oil inlet pipe and is suitable for controlling the conveying amount of sealing oil, and the sealing oil pump is suitable for pumping the sealing oil to each sealing bearing bush of the generator.
4. A generator airtight test apparatus for reducing a maintenance period of a steam turbine unit according to claim 3, wherein each sealing bush of the generator is provided with an oil receiving pipe, an oil outlet end of the sealing oil inlet pipe is provided with a plurality of branch pipes, and the plurality of branch pipes are respectively communicated with the plurality of oil receiving pipes so as to convey sealing oil to each sealing bush of the generator.
5. The apparatus of claim 1, wherein the lubrication system comprises a main oil tank having one end in communication with the hydrogen separator, a dirty oil tank in communication with the main oil tank, the clean oil tank in communication with the main oil tank, the main oil tank adapted to communicate with the generator and provide lubrication.
6. The apparatus according to claim 5, wherein a filter is provided between the main oil tank and the dirty oil tank, and the filter is adapted to filter impurities in the lubricating oil outputted from the main oil tank and prevent the impurities from entering the dirty oil tank.
7. The apparatus of claim 5, wherein an oil pumping assembly is disposed between the clean oil tank and the main oil tank, and is configured to pump clean oil from the clean oil tank into the main oil tank.
8. The air tightness test device for the generator for reducing the maintenance period of the steam turbine set according to claim 5, wherein an oil level alarm is inserted into the main oil tank, the dirty oil tank and the clean oil tank, the oil level alarm is electrically connected with the controller, a plurality of oil level height thresholds are preset on the controller, and when the oil level alarm detects that the oil levels of the main oil tank, the dirty oil tank and the clean oil tank are higher than the oil level height thresholds, the controller commands the oil level alarm to send an alarm signal.
9. A test method of a generator airtight test apparatus for reducing a maintenance period of a steam turbine set according to any one of claims 1 to 8, comprising the steps of:
the air tightness of the generator is tested through the test device body, the lubricating oil system provides lubricating oil for the generator, and the sealing oil system provides sealing oil for the sealing bearing bush of the generator;
an oil inlet pipe is arranged between an oil purifying tank and a hydrogen oil separator of the lubricating oil system, and two ends of the oil inlet pipe are respectively communicated with the oil purifying tank and the hydrogen oil separator;
an oil inlet pump is arranged on the oil inlet pipe, so that lubricating oil in the oil purifying box is conveyed into the hydrogen oil separator after the oil inlet pump runs, and when oil exists in the hydrogen oil separator, the sealed oil pump can normally run and is suitable for performing a generator airtight test;
a valve is arranged on the oil inlet pipe, so that the valve is positioned at the oil outlet end of the oil inlet pump, and the valve controls the oil inlet amount in the oil inlet pipe;
the oil inlet pump and the valve are electrically connected with the controller, and the operation of the oil inlet pump and the valve is controlled by the controller so as to control the conveying quantity of purified oil into the hydrogen oil separator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110919479.9A CN113624406B (en) | 2021-08-11 | 2021-08-11 | Generator airtight test device and method for reducing overhaul period of turbine unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110919479.9A CN113624406B (en) | 2021-08-11 | 2021-08-11 | Generator airtight test device and method for reducing overhaul period of turbine unit |
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| CN113624406A CN113624406A (en) | 2021-11-09 |
| CN113624406B true CN113624406B (en) | 2024-01-12 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4969796A (en) * | 1989-10-30 | 1990-11-13 | Westinghouse Electric Corp. | Method and apparatus for cooling shaft seals |
| JPH0630408U (en) * | 1992-09-25 | 1994-04-22 | 株式会社クボタ | Lubricating oil supply device for multiple installed engines |
| CN103091053A (en) * | 2011-11-07 | 2013-05-08 | 中国广东核电集团有限公司 | Nuclear power plant generator whole air tight test method |
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| CN113624406A (en) | 2021-11-09 |
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