CN214577231U - Sealing oil circulation system of turbonator - Google Patents
Sealing oil circulation system of turbonator Download PDFInfo
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- CN214577231U CN214577231U CN202023195709.1U CN202023195709U CN214577231U CN 214577231 U CN214577231 U CN 214577231U CN 202023195709 U CN202023195709 U CN 202023195709U CN 214577231 U CN214577231 U CN 214577231U
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Abstract
The utility model particularly discloses a sealing oil circulating system of a turbonator, which comprises a lubricating oil storage tank, a lubricating oil delivery pump, a small engine lubricating oil device and a single-flow ring sealing oil device, wherein the oil outlet of the lubricating oil storage tank is communicated with the oil pumping port of the lubricating oil delivery pump; the small engine lubricating oil device is provided with a small engine lubricating oil tank, an oil inlet of the small engine lubricating oil tank is communicated with an oil outlet of the lubricating oil delivery pump, and a sealing oil outlet of the small engine lubricating oil tank is communicated with an input pipe orifice of the single-flow ring sealing oil device through a first delivery pipe. This sealed oil circulation system makes it establish new sealed oil system's whole circulation process through switching the oil source to little quick-witted lubricating oil, and then can ensure to carry out the generator and beat the wind pressure test under the condition that lubricating oil system does not start, has improved the progress that the generator was beaten the wind and is pressed and leak hunting, has saved the time for the unit is incorporated into the power networks in advance.
Description
Technical Field
The utility model relates to a turbo generator seals oil system, concretely relates to turbo generator seals oil circulation system.
Background
The main function of the generator single-flow ring sealing oil system of the thermal power plant is to supply oil to the generator sealing tile, and the oil pressure is higher than the hydrogen pressure in the generator by a certain value, so that the hydrogen in the generator is prevented from leaking outwards along the gap between the rotating shaft and the sealing tile, and meanwhile, the oil pressure is prevented from being too high to cause a large amount of oil inlet in the generator.
However, in most existing steam turbines, during cylinder uncovering, a lubricating oil system is in a shutdown state, and main machine lubricating oil related equipment is also in a shutdown state; because the oil source of the single-flow ring sealing oil system comes from the main engine lubricating oil, the sealing oil system of the turbonator cannot perform the whole circulation of the sealing oil, and then the wind pressure test of the generator is performed, so that the grid connection time of a unit is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a turbo generator seals oil circulation system. The sealing oil circulating system of the turbonator switches the oil source to small machine lubricating oil, so that a new integral circulating process of the sealing oil system is established, and the wind pressure test of the turbonator can be carried out under the condition that the lubricating oil system is not started.
The utility model discloses the above-mentioned problem that will solve is through following technical scheme in order to realize:
a sealing oil circulating system of a turbonator comprises a lubricating oil storage tank, a lubricating oil delivery pump, a small machine lubricating oil device and a single-flow ring sealing oil device, wherein an oil outlet of the lubricating oil storage tank is communicated with an oil pumping port of the lubricating oil delivery pump; the small engine lubricating oil device is provided with a small engine lubricating oil tank, an oil inlet of the small engine lubricating oil tank is communicated with an oil outlet of the lubricating oil delivery pump, and a sealing oil outlet of the small engine lubricating oil tank is communicated with an input pipe orifice of the single-flow ring sealing oil device through a first delivery pipe.
Preferably, the lubricating device further comprises a main engine lubricating oil device, a main engine lubricating oil tank is arranged on the main engine lubricating oil device, an oil inlet of the main engine lubricating oil tank is communicated with an oil outlet of the lubricating oil delivery pump, and a sealing oil delivery port of the main engine lubricating oil tank is communicated with an input pipe orifice of the single-flow ring sealing oil device through a second delivery pipe.
Preferably, the main engine lubricating oil device and the small engine lubricating oil device are distributed in parallel, the main engine lubricating oil device and the small engine lubricating oil device are connected with an input pipe orifice of the single-flow ring sealing oil device through a second flow control valve and a third connecting pipe, and one of the main engine lubricating oil device and the small engine lubricating oil device operates independently to deliver sealing oil or both operate simultaneously to deliver sealing oil.
Preferably, the first conveying pipe is one or a combination of more of a straight pipe, a folded pipe, an arc pipe or an irregular pipe with a sealing ring.
Preferably, a first flow control valve is arranged on the first conveying pipe.
Preferably, the second conveying pipe is one or a combination of more of a straight pipe, a folded pipe, an arc pipe or an irregular pipe with a sealing ring.
Preferably, a third flow rate control valve is provided in the second delivery pipe.
Preferably, the single-flow ring sealing oil device comprises a generator, an oil return expansion groove, an air pumping groove, a floater oil tank, a vacuum box and an oil conveying assembly, wherein the oil return expansion groove and the air pumping groove are respectively connected with a steam end and an excitation end of a sealing ring of the generator through pipelines; the first oil inlet end of the vacuum box is communicated with the input pipe orifice, and the oil outlet end of the vacuum box is communicated with the generator through the oil conveying assembly.
Preferably, the conveying oil assembly comprises a second main sealing oil pump, a first main sealing oil pump and a sealing oil recirculation pump which are distributed in parallel, and two ends of the sealing oil recirculation pump are respectively communicated with the second oil inlet end of the vacuum box and the oil outlet end of the vacuum box; and the second main sealing oil pump and the first main sealing oil pump are respectively communicated with the oil outlet end of the vacuum box and the generator through a conveying pipeline.
Preferably, the single flow ring sealed oil device further comprises an oil-gas separator and an oil-gas absorber, wherein two ends of the oil-gas separator are respectively communicated with the air outlet of the air extraction groove and the air inlet of the oil-gas absorber, and the oil-gas separator is used for separating and adsorbing hydrogen.
Has the advantages that: adopt structure after, through the input mouth of pipe intercommunication of little quick-witted lubricating-oil tank and single current ring seal oil device, it only mainly provides sealed coolant oil for single current ring seal oil device by the host computer lubricating-oil tank of host computer lubricating oil system to have broken conventional way, take off the jar period at the steam turbine, the lubricating oil system is in the state of shutting down, and the transport process of host computer lubricating oil can't normally go on, switch to little quick-witted lubricating oil through the operation oil source of single current ring seal oil device, make its whole circulation process of establishing new seal oil system, and then can ensure to carry out the generator pressure test of blowing under the condition that lubricating oil system does not start, the progress of the pressure leak hunting of blowing of generator has been improved, the time has been saved for the unit is incorporated into the power networks in advance.
Drawings
Fig. 1 is a schematic view of one cycle principle of a sealing oil circulation system of a turbonator according to the present invention.
Fig. 2 is a schematic view of one of the structural principles of the sealing oil circulation system of the turbonator of the present invention.
Fig. 3 is another schematic diagram of the sealing oil circulation system of the turbonator of the present invention.
Fig. 4 is another schematic structural diagram of a sealing oil circulation system of a steam turbine generator according to the present invention.
Fig. 5 is a schematic structural diagram of a small engine lubricating oil tank of a sealing oil circulation system of a turbonator of the present invention.
Fig. 6 is a schematic structural diagram of a main engine lubricating oil tank of a sealing oil circulation system of a turbonator of the present invention.
In FIGS. 1-6: 1-a lubricating oil storage tank; 2-a lubricant oil delivery pump; 3-small machine lubricating oil device; 31-small machine lubricating oil tank; 311-sealing oil outlet; 312 — a first delivery tube; 313-a first flow control valve; 4-single flow ring seal oil device; 40-an input nozzle; 401-a second flow control valve; 5-a main engine lubricating oil device; 51-lubricating oil tank of main engine; 511-a second delivery pipe; 512-third flow control valve; 513-sealing the oil delivery port; 514-oil return port; 6-a generator; 61-vapor end; 62-the excitation end; 7-oil return enlarging groove; 8-air extraction groove; 9-a float tank; 10-a vacuum box; 11-an oil-gas separator; 12-an oil and gas absorber; 13-oil supply regulating valve; 14-a first bypass electrically operated gate; 15-outlet electrically operated gate; 16-inlet electric door; 17-a second bypass power gate; 18-a transfer oil assembly; 181-second main seal oil pump; 182 — a first primary seal oil pump; 183-seal oil recirculation pump; 19-a filter assembly; 191-a first oil supply screen; 192-second oil supply strainer.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the present invention in any manner.
As shown in fig. 1-2 and 5, a sealing oil circulation system for a turbonator comprises a lubricating oil storage tank 1, a lubricating oil delivery pump 2, a small engine lubricating oil device 3 and a single-flow ring sealing oil device 4, wherein an oil outlet of the lubricating oil storage tank 1 is communicated with an oil pumping port of the lubricating oil delivery pump 2; the small engine lubricating oil device 3 is provided with a small engine lubricating oil tank 31, an oil inlet of the small engine lubricating oil tank 31 is communicated with an oil outlet of the lubricating oil delivery pump 2, and a sealing oil outlet 311 of the small engine lubricating oil tank 31 is communicated with an input pipe orifice 40 of the single flow ring sealing oil device 4 through a first delivery pipe 312.
The small engine lubricating oil tank is communicated with the input pipe orifice of the single flow ring sealing oil device, the conventional method that only the main engine lubricating oil tank of the main engine lubricating oil system provides sealing cooling oil for the single flow ring sealing oil device is broken, the lubricating oil system is in a shutdown state during cylinder uncovering of a steam turbine, the conveying process of the main engine lubricating oil cannot be normally carried out, the operating oil source of the single flow ring sealing oil device is switched to the small engine lubricating oil, so that a new integral circulation process of the sealing oil system is established, the wind pressure test of the generator can be ensured to be carried out under the condition that the lubricating oil system is not started, the wind pressure check and leakage progress of the generator is improved, and the time is saved for the unit to be connected to the power grid in advance.
The generator wind pressure test is mainly used for testing the stator sealing condition after the generator is overhauled, ensuring that the hydrogen leakage amount of the generator reaches a preset target, and implementing the whole gas tightness test of the generator hydrogen system so as to test the assembly sealing property of the whole generator hydrogen system.
The small-machine lubricating oil device 3 comprises a small-machine lubricating oil tank 31, a lubricating oil filter, two alternating current oil pumps, a direct current oil pump, two parallel oil coolers, a smoke exhaust device, a switching valve, an overflow valve, a check valve, an oil sleeving pipeline, an oil supply and return pipeline, an oil level indicator, electric heater equipment and elements; specifically, the effective volume in the small engine lubricating oil tank 31 is 40L; an overflow valve, a check valve, a throttle valve, an electric heater and an internal oil pipeline are arranged in the small machine lubricating oil tank 31 and are mounted on the small machine lubricating oil tank; the small engine lubricating oil tank 31 is also connected with two alternating current oil pumps, an oil level indicator, a smoke exhaust device, a parallel oil cooler, a six-way switching valve and three sets of electric heaters; the small-sized lubricating oil device 3 is also provided with a direct-current accident oil pump which is used for providing lubricating oil when the unit is in AC power failure, so that the unit is safely stopped.
Specifically, the first delivery pipe 312 is one or more of a straight pipe, a bent pipe, an arc pipe or an irregular pipe with a sealing ring, and in the process of transferring and delivering the sealing oil, the sealing oil can be stably delivered to the single-flow ring sealing oil device 4 through the first delivery pipe with one or more of a straight pipe, a bent pipe, an arc pipe or an irregular pipe with a sealing ring, so that the situations of leakage and the like are avoided.
The first conveying pipe 312 is preferably made of a copper pipe, which is easy to process and connect, so that when the first conveying pipe is installed, the material and the total cost can be saved, the first conveying pipe has good stability and reliability, the maintenance can be omitted, the first conveying pipe is light in weight, good in heat conductivity and high in low-temperature strength; of course, other first delivery pipes with the same or similar performance may be used as the delivery seal oil pipe, and no particular limitation is imposed here.
Specifically, the first delivery pipe 312 is provided with a first flow control valve 313, and the delivery of the lubricating oil to the sealing oil system is regulated through the first flow control valve 31, so that the safety performance of the sealing oil system is improved.
Specifically, as shown in fig. 3-4 and 6, the lubricating device further comprises a main engine lubricating oil device 5, a main engine lubricating oil tank 51 is arranged on the main engine lubricating oil device 5, an oil inlet of the main engine lubricating oil tank 51 is communicated with an oil outlet of the lubricating oil delivery pump 2, and a sealing oil delivery port 513 of the main engine lubricating oil tank 51 is communicated with the input pipe orifice 40 of the single flow ring sealing oil device 4 through a second delivery pipe 511.
The main engine lubricating oil device 5 comprises a main steam turbine, a drainage flash tank, a pressure equalizing box for providing double-side steam sealing for the steam turbine and a main engine lubricating oil box 51 for providing lubricating oil for the steam turbine; the main engine lubricating oil tank 51 is connected with the main turbine through an alternating-current lubricating oil pump and a direct-current lubricating oil pump which are interlocked with each other; a heat exchanger and a standby heat exchanger for cooling lubricating oil are arranged on a connecting pipeline between the main engine lubricating oil tank 51 and the main turbine; an oil filter for filtering impurities in lubricating oil is arranged on a cooling oil output pipeline of the heat exchanger and the standby heat exchanger, and an oil pressure detection device and a low oil pressure alarm device are arranged on a lubricating oil pipeline connected with the main turbine through the oil filter; the actual volume of the main unit lubricating oil tank 51 is 350L.
Specifically, the main lubricating oil device 5 and the small lubricating oil device 3 are distributed in parallel, the main lubricating oil device 5 and the small lubricating oil device 3 are connected with the input pipe orifice 40 of the single flow ring sealing oil device 4 through a second flow control valve 401 and a third connecting pipe, one of the main lubricating oil device 5 and the small lubricating oil device 3 is operated independently to convey sealing oil or both of the main lubricating oil device 5 and the small lubricating oil device 3 are operated simultaneously to convey sealing oil, and the smoothness of conveying lubricating oil to the single flow ring sealing oil device 4 in a normal operation state or a shutdown state of a lubricating oil system during cylinder uncovering of a turbine can be ensured through mutual cooperation of the main lubricating oil device 5 and the small lubricating oil device 3, so that a generator wind pressure test can be performed under the condition that the lubricating oil system is not started; the wind pressure leakage checking progress of the generator is improved, the time is saved for the unit to be connected in advance, and meanwhile, the diversity of operation and running can be improved.
Specifically, the second delivery pipe 511 selects one or more combinations of a straight pipe, a folded pipe, an arc pipe or an irregular pipe with a sealing ring, and in the process of transferring and delivering the sealing oil, the sealing oil can be stably delivered to the single-flow ring sealing oil device 4 through the first delivery pipe with one or more combinations of the straight pipe, the folded pipe, the arc pipe or the irregular pipe with the sealing ring, so that the situations of leakage and the like are avoided.
The second delivery pipe 511 is preferably made of a copper pipe, which is easy to process and connect, so that when the second delivery pipe is installed, the material and the total cost can be saved, the second delivery pipe has good stability and reliability, the maintenance can be omitted, the second delivery pipe is light in weight, good in heat conductivity and high in low-temperature strength; of course, other first delivery pipes with the same or similar performance may be used as the delivery seal oil pipe, and no particular limitation is imposed here.
Specifically, the second delivery pipe 511 is provided with a third flow control valve 512, and the delivery of the lubricating oil to the sealed oil system is regulated through the first flow control valve 31, so that the safety performance of the sealed oil system is improved.
Specifically, the single-flow ring sealing oil device 4 comprises a generator 6, an oil return expansion groove 7, an air extraction groove 8, a float oil tank 9, a vacuum box 10 and an oil conveying assembly 18, wherein the oil return expansion groove 7 and the air extraction groove 50 are respectively connected with a steam end 61 and an excitation end 62 of a generator sealing ring 48 through pipelines, the oil return expansion groove 7 is respectively connected with the air extraction groove 8 through two pipelines, the float oil tank 9 and a float oil tank oil level regulating valve are sequentially arranged on one pipeline, an outlet electric door 15 and an inlet electric door 16 are respectively arranged at two ends of the float oil tank 9, and a second bypass electric door 17 is arranged on the other pipeline; the first oil inlet end of the vacuum box 10 is communicated with the input pipe orifice 40, and the oil outlet end of the vacuum box 10 is communicated with the generator 6 through the oil conveying assembly 18.
Specifically, the conveying oil assembly 18 includes a second main sealing oil pump 181, a first main sealing oil pump 182 and a sealing oil recirculation pump 183 which are distributed in parallel, and two ends of the sealing oil recirculation pump 183 are respectively communicated with a second oil inlet end of the vacuum box 10 and an oil outlet end of the vacuum box 10; the second main sealing oil pump 181 and the first main sealing oil pump 182 are respectively communicated with the oil outlet end of the vacuum box 10 and the generator 6 through a conveying pipeline.
Specifically, be provided with filtering component 19, fuel feeding and transfer valve 13 and first bypass electrically operated gate 14 on the transfer line, filtering component 19 includes first fuel feeding filter screen 191 and second fuel feeding filter screen 192 for sealed oil gets into generator 6 through first main sealed oil pump 182 (or second main sealed oil pump 181), first fuel feeding filter screen 191 (or second fuel feeding filter screen 192), fuel feeding and transfer valve 13 or first bypass electrically operated gate 14 in proper order all the way.
Wherein the vacuum box 10 is also called as a vacuum oil box.
Specifically, the single-flow ring sealed oil device 4 further comprises an oil-gas separator 11 and an oil-gas absorber 12, wherein two ends of the oil-gas separator 11 are respectively communicated with the air outlet of the air extraction groove 8 and the air inlet of the oil-gas absorber 12, and the oil-gas separator is used for separating and adsorbing hydrogen.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings and the terms "first", "second", only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A sealing oil circulating system of a turbonator is characterized by comprising a lubricating oil storage tank, a lubricating oil delivery pump, a small engine lubricating oil device and a single-flow ring sealing oil device, wherein an oil outlet of the lubricating oil storage tank is communicated with an oil pumping port of the lubricating oil delivery pump; the small engine lubricating oil device is provided with a small engine lubricating oil tank, an oil inlet of the small engine lubricating oil tank is communicated with an oil outlet of the lubricating oil delivery pump, and a sealing oil outlet of the small engine lubricating oil tank is communicated with an input pipe orifice of the single-flow ring sealing oil device through a first delivery pipe.
2. The sealing oil circulation system of the steam turbine generator as claimed in claim 1, further comprising a main engine lubricating oil device, wherein a main engine lubricating oil tank is arranged on the main engine lubricating oil device, an oil inlet of the main engine lubricating oil tank is communicated with an oil outlet of the lubricating oil delivery pump, and a sealing oil delivery port of the main engine lubricating oil tank is communicated with an input pipe orifice of the single flow ring sealing oil device through a second delivery pipe.
3. The sealing oil circulation system of the steam turbine generator as claimed in claim 2, wherein the main engine lubricating oil unit and the small engine lubricating oil unit are arranged in parallel, the common end of the main engine lubricating oil unit and the small engine lubricating oil unit is connected with the input pipe orifice of the single-flow ring sealing oil unit through a second flow control valve and a third connecting pipe, and one of the main engine lubricating oil unit and the small engine lubricating oil unit operates alone to deliver sealing oil or both operate simultaneously to deliver sealing oil.
4. The sealing oil circulation system of the steam turbine generator as claimed in claim 2, wherein the first delivery pipe is one or more of a straight pipe, a folded pipe and an arc pipe with a sealing ring.
5. The turbine generator seal oil circulation system of claim 4, wherein the first delivery pipe is provided with a first flow control valve.
6. The sealing oil circulation system of the steam turbine generator as claimed in claim 3, wherein the second delivery pipe is one or more of a straight pipe, a folded pipe and an arc pipe with a sealing ring.
7. The turbine generator seal oil circulation system of claim 6, wherein a third flow control valve is disposed on the second delivery pipe.
8. The sealing oil circulation system of the steam turbine generator as claimed in claim 1, wherein the single-flow ring sealing oil device comprises a generator, an oil return expansion tank, an air extraction tank, a float oil tank, a vacuum tank and an oil delivery assembly, the oil return expansion tank and the air extraction tank are respectively connected with a steam end and an excitation end of a sealing ring of the generator through pipelines, the oil return expansion tank is respectively connected with the air extraction tank through two pipelines, the float oil tank and an oil level regulating valve of the float oil tank are sequentially arranged on one pipeline, and an outlet electric door and an inlet electric door are respectively arranged at two ends of the float oil tank; a second bypass electric door is arranged on the other pipeline; the first oil inlet end of the vacuum box is communicated with the input pipe orifice, and the oil outlet end of the vacuum box is communicated with the generator through the oil conveying assembly.
9. The seal oil circulation system of the steam turbine generator as claimed in claim 8, wherein the transportation oil assembly comprises a second main seal oil pump, a first main seal oil pump and a seal oil recirculation pump which are distributed in parallel, and two ends of the seal oil recirculation pump are respectively communicated with the second oil inlet end of the vacuum box and the oil outlet end of the vacuum box; and the second main sealing oil pump and the first main sealing oil pump are respectively communicated with the oil outlet end of the vacuum box and the generator through a conveying pipeline.
10. The sealing oil circulation system of a steam turbine generator as claimed in claim 9, wherein the single flow ring sealing oil device further comprises an oil-gas separator and an oil-gas absorber, both ends of the oil-gas separator are respectively communicated with the air outlet of the air extraction groove and the air inlet of the oil-gas absorber, and the oil-gas separator is used for separating and adsorbing hydrogen.
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| CN202023195709.1U CN214577231U (en) | 2020-12-25 | 2020-12-25 | Sealing oil circulation system of turbonator |
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| CN202023195709.1U CN214577231U (en) | 2020-12-25 | 2020-12-25 | Sealing oil circulation system of turbonator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576319A (en) * | 2020-12-25 | 2021-03-30 | 沧州华润热电有限公司 | Sealing oil circulation system of turbonator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576319A (en) * | 2020-12-25 | 2021-03-30 | 沧州华润热电有限公司 | Sealing oil circulation system of turbonator |
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