CN214403845U - Hydro-electric generating set bearing oil gas sealing device - Google Patents
Hydro-electric generating set bearing oil gas sealing device Download PDFInfo
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- CN214403845U CN214403845U CN202120215332.7U CN202120215332U CN214403845U CN 214403845 U CN214403845 U CN 214403845U CN 202120215332 U CN202120215332 U CN 202120215332U CN 214403845 U CN214403845 U CN 214403845U
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- 238000007789 sealing Methods 0.000 title claims abstract description 85
- 239000003507 refrigerant Substances 0.000 claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 239000002826 coolant Substances 0.000 claims description 7
- 239000003921 oil Substances 0.000 abstract description 198
- 239000010723 turbine oil Substances 0.000 abstract description 21
- 239000007788 liquid Substances 0.000 abstract description 19
- 239000003595 mist Substances 0.000 abstract description 17
- 230000000630 rising effect Effects 0.000 abstract description 7
- 238000010992 reflux Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 23
- 108010066057 cabin-1 Proteins 0.000 description 13
- 244000309464 bull Species 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 210000003437 trachea Anatomy 0.000 description 6
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 244000126211 Hericium coralloides Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model provides a hydroelectric set bearing oil gas sealing device, through set up refrigerant cooling system and blade wind pressure system in the sealed cabin is collected to the oil gas, gas seal system is located outside the sealed cabin is collected to the oil gas, the macroaxis drives the high-speed rotatory high-temperature oil gas that forms the wind pressure sealed area and blocks from oil mist escape passageway rising of blade wind pressure system, high temperature oil gas and refrigerant pipe contact form liquid turbine oil drip to the annular oil trap internal reflux of bottom plate to the bearing oil groove, when a small amount of oil gas crossed the wind pressure sealed area and escaped from the sealing strip region, form liquid turbine oil once more through the jet-propelled sealed blowback of gas seal system to the refrigerant pipe. The utility model overcomes former hydroelectric set main shaft bearing oil groove oil gas runaway oil consumption is big, pollutes the foundation ditch, and the problem that life is low has simple structure, avoids bearing oil groove oil gas escape outward, and is sealed effectual, and the oil mass loss is little, can not pollute the machine hole, improves unit life, easy operation convenient characteristics.
Description
Technical Field
The utility model belongs to the technical field of hydroelectric generating set seals, a hydroelectric generating set bearing oil gas sealing device is related to.
Background
A guide bearing and a thrust bearing are arranged on a large shaft of the hydroelectric generating set so as to limit radial displacement of the large shaft and transfer axial load of a rotating component. When the large shaft rotates at a high speed, the relative motion of the bearing rotary thrust head and the static mirror plate drives turbine oil in the bearing to rotate, so that the oil surface is gushed to the outer wall of the oil groove due to the action of centrifugal force, splashed or stirred, oil droplets or oil mist is easy to escape from a gap between the surface of the large shaft and the bearing sealing cover, and oil gas escaping from the bearing is formed. On the other hand, the oil and air volume in the oil sump expands due to the temperature rise of the bearings, thereby generating a high internal pressure, and oil mist and oil gas in the oil sump may escape from the gap between the rotating surface of the large shaft and the bearings due to the internal pressure and the high temperature. The oil gas escaping from the bearing not only consumes the oil quantity of the bearing, but also reduces the oil level in the oil groove when the oil is serious, so that the bearing is burnt; meanwhile, the escaped oil gas can pollute a machine pit, a stator winding and a rotor winding, the insulation aging of the stator winding and the rotor winding is accelerated, and the service life of the machine set is shortened. At present, a bearing seal of a hydroelectric generating set mostly adopts a labyrinth seal structure or a comb-tooth seal structure, and wool felt or carbon materials are filled in a seal groove. However, these structures have poor sealing effect against oil and gas escape, and the wool felt is easy to harden with the increase of running time, so that the bearings are polluted.
Disclosure of Invention
The utility model aims to solve the technical problem that a hydroelectric set bearing oil-gas seal device is provided, moreover, the steam generator is simple in structure, adopt and to set up refrigerant cooling system and blade wind pressure system in the oil-gas collection sealed cabin, gas seal system is located outside the oil-gas collection sealed cabin, the main shaft drives the high-speed rotatory high temperature oil gas that forms the wind pressure seal zone and blocks from oil mist escape passageway rising of formation, high temperature oil gas and refrigerant pipe contact form liquid turbine oil and drip to the annular oil trap internal reflux of bottom plate to the bearing oil groove, a small amount of oil gas crosses when the wind pressure seal zone escapes from the sealing strip region, form liquid turbine oil once more by the jet-propelled sealed blowback of gas seal system to the refrigerant pipe, avoid bearing oil groove oil gas escape outward, it is sealed effectual, the oil mass loss is little, can not pollute the machine pit, improve unit life, easy operation is convenient.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a hydro-electric generating set bearing oil gas sealing device comprises an oil gas collecting sealed cabin, a refrigerant cooling system, a blade wind pressure system and a gas sealing system; the refrigerant cooling system is positioned at the upper part of a bottom plate in the oil-gas collection sealed cabin, the blade wind pressure system is positioned at the upper part of the refrigerant cooling system, the gas sealing system is positioned outside the oil-gas collection sealed cabin, and the lower part of the bottom plate is provided with an oil ring which is positioned on the same axis with the refrigerant cooling system, the blade wind pressure system and the gas sealing system; blades of the blade wind pressure system rotate at a high speed to form a wind flow air pressure sealing area on the upper portion of the refrigerant cooling system, and a gas injection branch pipe of the gas sealing system performs gas injection sealing on a sealing belt area in the center of the oil gas collecting sealing cabin.
The oil gas collecting sealed cabin comprises a bottom plate connected with the lower side of the sealed cabin, a base and an oil ring, wherein the base and the oil ring are connected with the lower side of the bottom plate; the sealed cabin is a circular cylinder structure with a downward opening and formed by two semicircular cylinders, and the upper side surface of the sealed cabin is provided with a shaft hole.
The bottom plate is a hollow plate body which is formed by two semicircular plate bodies and is provided with an opening at the upper side, a round hole is arranged at the plate bottom and is connected with an oil ring, an annular oil collecting tank with a downward opening is arranged at the plate bottom, and an oil return pipe is connected with the annular oil collecting tank; the oil ring is a circular cylinder body consisting of two semicircular arc plates.
The refrigerant cooling system comprises a plurality of refrigerant pipes communicated with the refrigerant cavity and a support piece located at the lower part of the refrigerant pipe of the annular structure, and the support piece is connected with a bottom plate of the oil gas collecting sealed cabin.
The number of the refrigerant cavities is at least two, the number of the refrigerant pipes is at least three, and one refrigerant cavity is provided with an air inlet pipe and an air outlet pipe; the refrigerant cavity is a hollow cavity structure formed by two semi-closed cavities, each layer of refrigerant pipe is a circular pipeline formed by semicircular pipelines, and two ends of each semicircular pipeline are respectively communicated with the refrigerant cavity.
The blade wind pressure system comprises a ring plate connected with the blades, and the ring plate is an arc-shaped plate; the ring plates and the oil rings are positioned on the same axis, and the plurality of ring plates are annularly distributed along the axis of the oil rings.
The blades are twisted fan-shaped blades, and the downward inclination of the blades forms an included angle of 20 degrees with the oil ring.
The gas sealing system comprises a plurality of gas injection branch pipes connected with the inner side of the annular gas pipe and a check valve communicated with the annular gas pipe; the annular air pipe is a circular air pipe consisting of two arc-shaped air pipes.
The plurality of the air injection branch pipes are radially arranged, and the downward air injection branch pipes form an included angle of 30 degrees with the annular air pipe.
A hydro-electric generating set bearing oil gas sealing device comprises an oil gas collecting sealed cabin, a refrigerant cooling system, a blade wind pressure system and a gas sealing system; the refrigerant cooling system is positioned at the upper part of a bottom plate in the oil-gas collection sealed cabin, the blade wind pressure system is positioned at the upper part of the refrigerant cooling system, the gas sealing system is positioned outside the oil-gas collection sealed cabin, and the lower part of the bottom plate is provided with an oil ring which is positioned on the same axis with the refrigerant cooling system, the blade wind pressure system and the gas sealing system; blades of the blade wind pressure system rotate at a high speed to form a wind flow air pressure sealing area on the upper portion of the refrigerant cooling system, and a gas injection branch pipe of the gas sealing system performs gas injection sealing on a sealing belt area in the center of the oil gas collecting sealing cabin. Simple structure, through set up refrigerant cooling system and blade wind pressure system in the oil gas collection sealed cabin, the gas-tight system is located outside the oil gas collection sealed cabin, the macroaxis drives the high-speed rotatory high-temperature oil gas that forms the wind pressure sealing zone and blocks to rise from oil mist escape passageway of blade wind pressure system, high temperature oil gas and refrigerant pipe contact form liquid turbine oil drip to the annular oil trap internal reflux of bottom plate to the bearing oil groove, when a small amount of oil gas crosses the wind pressure sealing zone and escapes from the sealing strip region, form liquid turbine oil once more through the jet-propelled sealed blowback of gas-tight system to the refrigerant pipe, avoid bearing oil groove oil gas escape, it is sealed effectual, the oil mass loss is little, can not pollute the machine hole, the service life of the unit is prolonged, and the operation is simple and convenient.
In a preferred scheme, the oil gas collecting sealed cabin comprises a bottom plate connected with the lower side of the sealed cabin, and a base and an oil ring which are positioned on the lower side of the bottom plate and connected with each other; the sealed cabin is a circular cylinder structure with a downward opening and formed by two semicircular cylinders, and the upper side surface of the sealed cabin is provided with a shaft hole. Simple structure, during the installation, the base is connected fixedly with the bearing top cap, and the sealed cabin is the circular barrel of combination, is convenient for and the bull shaft cooperation installation, and the clearance between oil ring and the bull shaft outer wall is oil mist escape channel, and during the use, the sealed cabin is collected to the oil gas and is not rotatory along with the bull shaft, and oil mist and oil gas that the oil in the bull shaft oil groove caused when the bull shaft bearing is high-speed rotatory rise from oil mist escape channel and enter into the sealed cabin.
In a preferred scheme, the bottom plate is a hollow plate body which is formed by two semicircular plate bodies and is provided with an opening at the upper side, a round hole is arranged at the bottom of the plate body and is connected with an oil ring, an annular oil collecting tank with a downward opening is arranged at the bottom of the plate body, and an oil return pipe is connected with the annular oil collecting tank; the oil ring is a circular cylinder body consisting of two semicircular arc plates. Simple structure, during the use, the bottom plate and the oil ring that adopt integrated configuration are convenient for with the staff cooperation installation, during the use, in liquid turbine oil drips behind the bottom plate from the domatic inflow annular oil trap of slope, in returning oil pipe backward flow to the bearing oil groove, have reduced the oil mass loss.
In the preferred scheme, the refrigerant cooling system comprises a plurality of refrigerant pipes communicated with the refrigerant cavity and a support piece positioned at the lower part of the refrigerant pipe of the annular structure, and the support piece is connected with the bottom plate of the oil-gas collection sealed cabin. Simple structure, during the installation, the support piece and the bottom plate of T type structure are connected, and support piece supports refrigerant cooling system, and during the use, when the staff is rotatory, refrigerant cooling system is not rotatory along with it.
In the preferred scheme, the number of the refrigerant cavities is at least two, the number of the refrigerant pipes is at least three, and one refrigerant cavity is provided with an air inlet pipe and an air outlet pipe; the refrigerant cavity is a hollow cavity structure formed by two semi-closed cavities, each layer of refrigerant pipe is a circular pipeline formed by semicircular pipelines, and two ends of each semicircular pipeline are respectively communicated with the refrigerant cavity. Simple structure, during the installation, adopt integrated configuration's refrigerant chamber and refrigerant pipe, be convenient for and macroaxis cooperation installation, during the use, the quantity and the number of piles of refrigerant pipe are more, and its condensation effect is better.
In a preferred scheme, the blade wind pressure system comprises a ring plate connected with the blade, and the ring plate is an arc-shaped plate; the ring plates and the oil rings are positioned on the same axis, and the plurality of ring plates are annularly distributed along the axis of the oil rings. Simple structure, during the installation, the crown plate welds with the staff, and a plurality of blades are located and lay along the even annular of staff axis.
In a preferred scheme, the blades are twisted fan-shaped blades, and the blades are inclined downwards to form an included angle of 20 degrees with the oil ring. The structure is simple, when the oil-gas separator is used, the large shaft rotates to drive the blades to rotate at a high speed, and the lower sides of the blades form an air flow air pressure sealing area when the blades rotate at a high speed, so that the air flow air pressure sealing area blocks oil gas from rising; the blade and the main shaft form a downward inclined angle of 20 degrees, the air flow and air pressure formed by the angle are optimal, and the effect of sealing oil gas rising is good.
In a preferred scheme, the gas sealing system comprises a plurality of gas injection branch pipes connected with the inner side of the annular gas pipe, and a check valve communicated with the annular gas pipe; the annular air pipe is a circular air pipe consisting of two arc-shaped air pipes. Simple structure, during the installation, the annular trachea that adopts integrated configuration is convenient for and the bull shaft cooperation installation, during the use, the check valve open with the air supply intercommunication, pressure air current gets into behind the annular trachea from the jet-propelled branch pipe blowout, and the air current directive is sealed the area, and the oil gas blowback that will cross the atmospheric pressure seal district in a small amount forms liquid turbine oil to the condensation once more of refrigerant pipe, further blocks outside the oil gas effusion sealed cabin, improves the performance of sealed oil gas.
In the preferred scheme, a plurality of branch air injection pipes are radially distributed, and the branch air injection pipes downwards form an included angle of 30 degrees with the annular air pipe. When the device is installed, the air injection branch pipe is connected with the bearing top cover, the air injection port faces to the sealing belt area in a 30-degree included angle, the optimal back flushing effect is formed, and oil gas is blocked from escaping from the sealing cabin.
The utility model provides a hydroelectric set bearing oil gas sealing device, it includes the oil gas collection sealed cabin, refrigerant cooling system, blade wind pressure system and gas seal system, through set up refrigerant cooling system and blade wind pressure system in the oil gas collection sealed cabin, the gas seal system is located the oil gas collection sealed cabin outside, the macroaxis drives the high-speed rotatory high temperature oil gas that forms the wind pressure sealing zone and blocks from the oil mist escape passageway rises outward of blade wind pressure system, high temperature oil gas and refrigerant pipe contact form liquid turbine oil drip to the annular oil trap internal reflux of bottom plate to the bearing oil groove, when a small amount of oil gas surpassed the wind pressure sealing zone and escaped from the sealing strip region, form liquid turbine oil once more through the jet-propelled sealed blowback of gas seal system to the refrigerant pipe. The utility model overcomes former hydroelectric set main shaft bearing oil groove oil gas runaway oil consumption is big, pollutes the foundation ditch, and the problem that life is low has simple structure, avoids bearing oil groove oil gas escape outward, and is sealed effectual, and the oil mass loss is little, can not pollute the machine hole, improves unit life, easy operation convenient characteristics.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the refrigerant cooling system of the present invention located in the sealed cabin.
Fig. 3 is a schematic structural view of the blade wind pressure system of the present invention located in the sealed cabin.
Fig. 4 is a schematic structural view of the gas sealing system of the present invention located outside the sealed cabin.
In the figure: the oil gas collecting and sealing device comprises an oil gas collecting and sealing cabin 1, a sealing cabin 11, a bottom plate 12, a base 13, an oil ring 14, an annular oil collecting groove 15, an oil return pipe 16, a refrigerant cooling system 2, a refrigerant cavity 21, a refrigerant pipe 22, a supporting piece 23, a blade wind pressure system 3, blades 31, an annular plate 32, a gas sealing system 4, an annular gas pipe 41, a gas injection branch pipe 42 and a check valve 43.
Detailed Description
As shown in fig. 1 to 4, a hydro-power generator set bearing oil-gas sealing device comprises an oil-gas collecting sealed cabin 1, a refrigerant cooling system 2, a blade wind pressure system 3 and a gas sealing system 4; the cooling medium cooling system 2 is positioned on the upper part of a bottom plate 12 in the oil-gas collection sealed cabin 1, the blade wind pressure system 3 is positioned on the upper part of the cooling medium cooling system 2, the gas sealing system 4 is positioned outside the oil-gas collection sealed cabin 1, and an oil ring 14, the cooling medium cooling system 2, the blade wind pressure system 3 and the gas sealing system 4 are arranged on the same axis on the lower part of the bottom plate 12; the blades 31 of the blade wind pressure system 3 rotate at high speed to form a wind flow air pressure sealing area on the upper part of the cooling medium cooling system 2, and the gas injection branch pipes 42 of the gas sealing system 4 perform gas injection sealing on the sealing area at the center of the oil gas collection sealing cabin 1. Simple structure, through set up refrigerant cooling system 2 and blade wind pressure system 3 in oil gas collection sealed cabin 1, gas seal system 4 is located outside oil gas collection sealed cabin 1, the macroaxis drives 3 high-speed rotatory high-temperature oil gas that form the wind pressure sealed area of blade wind pressure system and block and rise from oil mist escape passageway, high temperature oil gas flows back to the bearing oil groove in the annular oil catch bowl 15 of bottom plate 12 with refrigerant pipe 22 contact formation liquid turbine oil drips, a small amount of oil gas crosses the wind pressure sealed area when escaping from the sealing strip region, form liquid turbine oil once more through 4 jet-propelled sealed blowbacks of gas seal system to refrigerant pipe 22, avoid bearing oil groove oil gas escape outward, it is sealed effectual, the oil mass loss is little, can not pollute the machine hole, improve unit life, easy operation is convenient.
In a preferred scheme, the oil and gas collection sealed cabin 1 comprises a bottom plate 12 connected with the lower side of a sealed cabin 11, and a base 13 and an oil ring 14 which are connected with the lower side of the bottom plate; the sealed cabin 11 is a circular cylinder structure with a downward opening and composed of two semicircular cylinders, and the upper side surface of the sealed cabin is provided with a shaft hole. Simple structure, during the installation, base 13 is connected fixedly with the bearing top cap, and sealed cabin 11 is the circular barrel of combination, is convenient for and the bull shaft cooperation installation, and the clearance between oil ring 14 and the bull shaft outer wall is oil mist escape passageway, and during the use, oil gas collection sealed cabin 1 is not rotatory along with the bull shaft, and oil mist and oil gas that the oil in the bull shaft oil groove caused when the bull shaft bearing is high-speed rotatory rise from oil mist escape passageway and enter into sealed cabin 11.
In a preferred scheme, the bottom plate 12 is a hollow plate body which is formed by two semicircular plate bodies and is provided with an opening at the upper side, a round hole is formed in the bottom of the plate body and is connected with an oil ring 14, an annular oil collecting groove 15 with an opening facing downwards is formed in the bottom of the plate body, and an oil return pipe 16 is connected with the annular oil collecting groove 15; the oil ring 14 is a circular cylinder formed by two semicircular arc plates. Simple structure, during the use, adopt integrated configuration's bottom plate 12 and oil ring 14 to be convenient for with the staff cooperation installation, during the use, in liquid turbine oil drips and flows into annular oil catch bowl 15 from the domatic inflow of slope behind bottom plate 12, in the oil pipe 16 backward flow to the bearing oil groove that returns, has reduced the oil mass loss.
In a preferred embodiment, the refrigerant cooling system 2 includes a plurality of refrigerant pipes 22 communicated with the refrigerant cavity 21, and a support member 23 located at a lower portion of the refrigerant pipes 22 of the annular structure, and the support member 23 is connected to the bottom plate 12 of the oil-gas collecting hermetic chamber 1. Simple structure, during the installation, support piece 23 and bottom plate 12 of T type structure are connected, and support piece 23 supports refrigerant cooling system 2, and during the use, when the staff is rotatory, refrigerant cooling system 2 does not rotate along with it.
In a preferred scheme, the number of the refrigerant cavities 21 is at least two, the number of the refrigerant pipes 22 is at least three, and an air inlet pipe and an air outlet pipe are arranged on one refrigerant cavity 21; the refrigerant cavity 21 is a hollow cavity structure composed of two semi-closed cavities, each layer of refrigerant pipe 22 is a circular pipeline composed of semicircular pipelines, and two ends of each semicircular pipeline are respectively communicated with the refrigerant cavity 21. Simple structure, during the installation, adopt integrated configuration's refrigerant chamber 21 and refrigerant pipe 22, be convenient for and the installation of staff cooperation, during the use, refrigerant pipe 22's quantity and number of piles are more, and its condensation effect is better.
Preferably, the refrigerant chamber 21 is filled with freon refrigerant.
In a preferred scheme, the blade wind pressure system 3 comprises a ring plate 32 connected with the blade 31, wherein the ring plate 32 is an arc-shaped plate; the ring plate 32 is located on the same axis as the oil ring 14, and the plurality of ring plates 32 are arranged in a ring shape with respect to the axis of the oil ring 14. The structure is simple, during installation, the annular plate 32 is welded with the large shaft, and the plurality of blades 31 are uniformly and annularly distributed along the axis of the large shaft.
In a preferred scheme, the vane 31 is a twisted fan-shaped vane, and the inclined angle of the vane 31 and the oil ring 14 is 20 degrees. The structure is simple, when the oil gas; the blade 31 and the large shaft form a downward inclined angle of 20 degrees, the air flow and the air pressure formed by the angle are optimal, and the effect of sealing oil gas rising is good.
In a preferred embodiment, the gas sealing system 4 comprises a plurality of gas injection branches 42 connected to the inner side of the annular gas pipe 41, and a check valve 43 communicated with the annular gas pipe 41; the annular air pipe 41 is a circular air pipe consisting of two arc-shaped air pipes. Simple structure, during the installation, the annular trachea 41 that adopts integrated configuration is convenient for and the bull shaft cooperation installation, during the use, check valve 43 opens and air supply intercommunication, and the pressure air current gets into behind the annular trachea 41 from jet-propelled branch pipe 42 blowout, and the air current directive is sealed the band region, and the oil gas blowback that will cross the atmospheric pressure sealed area in a small amount forms liquid turbine oil to refrigerant pipe 22 recondensation once more, further blocks outside the oil gas effusion sealed cabin 11, improves the performance of sealed oil gas.
In a preferred scheme, a plurality of the branch air injection pipes 42 are radially distributed, and the branch air injection pipes 42 form an included angle of 30 degrees with the annular air pipe 41 downwards. When the device is installed, the air injection branch pipe 42 is connected with the bearing top cover, the air injection port faces to the sealing belt area in a 30-degree included angle, the optimal back flushing effect is formed, and oil gas is blocked from escaping from the sealing cabin 11.
As above hydroelectric set bearing oil gas sealing device, during the installation use, set up refrigerant cooling system 2 and blade wind pressure system 3 in oil gas collection sealed cabin 1, gas seal system 4 is located oil gas collection sealed cabin 1 outside, the macroaxis drives 3 high-speed rotations of blade wind pressure system and forms the high temperature oil gas that the wind pressure sealed area blockked to rise from the oil mist escape passageway, high temperature oil gas and refrigerant pipe 22 contact formation liquid turbine oil drip to the annular oil catch bowl 15 of bottom plate 12 internal reflux to the bearing oil groove, when a small amount of oil gas crossed the wind pressure sealed area and escaped from the sealing strip region, 4 jet-propelled sealed blowbacks of gas seal system form liquid turbine oil to refrigerant pipe 22 once more, avoid the bearing oil groove oil gas to escape outward, it is sealed effectual, the oil mass loss is little, can not pollute the machine pit, improve unit life, and the operation is simple and convenient.
During installation, the base 13 is fixedly connected with the bearing top cover, the sealed cabin 11 is a combined circular cylinder body and is convenient to be installed in a matched mode with the large shaft, a gap between the oil ring 14 and the outer wall of the large shaft is an oil mist escape channel, when the oil gas collecting sealed cabin 1 is used, the oil gas collecting sealed cabin 1 does not rotate along with the large shaft, and oil mist and oil gas caused by high-speed rotation of oil in the oil groove of the large shaft in the high-speed rotation of the bearing of the large shaft rise upwards from the oil mist escape channel and enter the sealed cabin 11.
When the combined type turbine oil collector is used, the base plate 12 and the oil ring 14 which are of a combined structure are convenient to be installed with a large shaft in a matched mode, when liquid turbine oil drops to the base plate 12 and then flows into the annular oil collecting groove 15 from the inclined slope surface, the liquid turbine oil flows back to the bearing oil groove from the oil return pipe 16, and oil loss is reduced.
When the cooling device is installed, the support piece 23 of the T-shaped structure is connected with the bottom plate 12, the support piece 23 supports the refrigerant cooling system 2, and when the cooling device is used, the refrigerant cooling system 2 does not rotate along with the large shaft when the large shaft rotates.
During the installation, adopt integrated configuration's refrigerant chamber 21 and refrigerant pipe 22, be convenient for with the staff cooperation installation, during the use, the quantity and the number of piles of refrigerant pipe 22 are more, and its condensation effect is better.
When the blade is installed, the annular plate 32 is welded with the large shaft, and the plurality of blades 31 are uniformly and annularly distributed along the axis of the large shaft.
When the oil-gas separator is used, the large shaft rotates to drive the blades 31 to rotate at a high speed, and the lower sides of the blades 31 form an air flow and air pressure sealing area which blocks oil gas from rising when the blades rotate at a high speed; the blade 31 and the large shaft form a downward inclined angle of 20 degrees, the air flow and the air pressure formed by the angle are optimal, and the effect of sealing oil gas rising is good.
During the installation, the annular trachea 41 that adopts integrated configuration is convenient for install with the staff cooperation, and during the use, check valve 43 opens and communicates with the air supply, and the pressure air current spouts from jet-propelled branch pipe 42 after getting into annular trachea 41, and the air current directive sealing strip region will be a small amount of oil gas blowbacks that cross the atmospheric pressure sealing zone and condense once more to form liquid turbine oil to refrigerant pipe 22, further blocks that the oil gas escapes outside the sealed cabin 11, improves the performance of sealed oil gas.
The air injection branch pipe 42 is connected with the bearing top cover, and the air injection port faces to the sealing belt area at an included angle of 30 degrees to form the optimal back flushing effect and prevent oil gas from escaping from the sealing cabin 11.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (9)
1. The utility model provides a hydroelectric set bearing oil gas sealing device which characterized by: the device comprises an oil gas collection sealed cabin (1), a refrigerant cooling system (2), a blade wind pressure system (3) and a gas sealing system (4); the cooling medium cooling system (2) is positioned on the upper portion of a bottom plate (12) in the oil-gas collection sealed cabin (1), the blade wind pressure system (3) is positioned on the upper portion of the cooling medium cooling system (2), the gas sealing system (4) is positioned outside the oil-gas collection sealed cabin (1), and an oil ring (14) is arranged on the lower portion of the bottom plate (12) and is positioned on the same axis with the cooling medium cooling system (2), the blade wind pressure system (3) and the gas sealing system (4); blades (31) of the blade wind pressure system (3) rotate at a high speed to form a wind flow air pressure sealing area on the upper part of the refrigerant cooling system (2), and a gas injection branch pipe (42) of the gas sealing system (4) performs gas injection sealing on a sealing belt area in the center of the oil gas collection sealing cabin (1).
2. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the oil gas collection sealed cabin (1) comprises a bottom plate (12) connected with the lower side of the sealed cabin (11), and a base (13) and an oil ring (14) which are positioned on the lower side of the bottom plate and connected with each other; the sealed cabin (11) is a circular cylinder structure with a downward opening and composed of two semicircular cylinders, and the upper side surface of the sealed cabin is provided with a shaft hole.
3. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the bottom plate (12) is a hollow plate body which is composed of two semicircular plate bodies and is provided with an opening at the upper side, a round hole is formed in the bottom of the plate body and is connected with an oil ring (14), an annular oil collecting tank (15) with a downward opening is formed in the bottom of the plate body, and an oil return pipe (16) is connected with the annular oil collecting tank (15); the oil ring (14) is a circular cylinder consisting of two semicircular arc plates.
4. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the refrigerant cooling system (2) comprises a plurality of refrigerant pipes (22) communicated with the refrigerant cavity (21) and a support piece (23) positioned at the lower part of the refrigerant pipes (22) of the annular structure, and the support piece (23) is connected with the bottom plate (12) of the oil-gas collection sealed cabin (1).
5. The hydro-power generating unit bearing hydro-pneumatic sealing device of claim 4, wherein: the number of the refrigerant cavities (21) is at least two, the number of layers of the refrigerant pipes (22) is at least three, and an air inlet pipe and an air outlet pipe are arranged on one refrigerant cavity (21); the refrigerant cavity (21) is a hollow cavity structure formed by two semi-closed cavities, each layer of refrigerant pipe (22) is a circular pipeline formed by semicircular pipelines, and two ends of each semicircular pipeline are respectively communicated with the refrigerant cavity (21).
6. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the blade wind pressure system (3) comprises a ring plate (32) connected with the blade (31), and the ring plate (32) is an arc-shaped plate; the ring plates (32) and the oil rings (14) are positioned on the same axis, and the plurality of ring plates (32) are annularly arranged along the axis of the oil rings (14).
7. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the blades (31) are twisted fan-shaped blades, and the blades (31) are inclined downwards to form an included angle of 20 degrees with the oil ring (14).
8. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the gas sealing system (4) comprises a plurality of gas injection branch pipes (42) connected with the inner side of the annular gas pipe (41) and check valves (43) communicated with the annular gas pipe (41); the annular air pipe (41) is a circular air pipe consisting of two arc-shaped air pipes.
9. The hydro-power generating unit bearing oil-gas sealing device of claim 1, wherein: the plurality of the air injection branch pipes (42) are radially distributed, and the air injection branch pipes (42) form an included angle of 30 degrees with the annular air pipe (41) downwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120215332.7U CN214403845U (en) | 2021-01-26 | 2021-01-26 | Hydro-electric generating set bearing oil gas sealing device |
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| CN202120215332.7U CN214403845U (en) | 2021-01-26 | 2021-01-26 | Hydro-electric generating set bearing oil gas sealing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709660A (en) * | 2021-01-26 | 2021-04-27 | 中国长江电力股份有限公司 | Hydro-electric generating set bearing oil-gas sealing device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709660A (en) * | 2021-01-26 | 2021-04-27 | 中国长江电力股份有限公司 | Hydro-electric generating set bearing oil-gas sealing device and method |
| CN112709660B (en) * | 2021-01-26 | 2024-06-11 | 中国长江电力股份有限公司 | Hydro-generator set bearing oil-gas sealing device and method |
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