CN205445698U - Back pressure turbine asynchronous generator group suitable for heat supply network initial station improvement project - Google Patents
Back pressure turbine asynchronous generator group suitable for heat supply network initial station improvement project Download PDFInfo
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- CN205445698U CN205445698U CN201521102467.3U CN201521102467U CN205445698U CN 205445698 U CN205445698 U CN 205445698U CN 201521102467 U CN201521102467 U CN 201521102467U CN 205445698 U CN205445698 U CN 205445698U
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- back pressure
- pressure turbine
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Abstract
The utility model discloses a back pressure turbine asynchronous generator group suitable for heat supply network initial station improvement project, its characterized in that, multistage back pressure steam turbine drags asynchronous generator by the single cylinder, promptly the multistage back pressure steam turbine's of single cylinder major assembly axle hookup asynchronously send out the input shaft electromechanical, the bus -bar system of improvement project is directly incorporated into to asynchronous generator's power output line, wherein the multistage back pressure steam turbine of cylinder is including the cylinder of single cylinder structure, the cylinder comprises preceding, back two parts, divides the face to link into an integrated entity through the vertical centering control, in the front, the horizontal flange punishment of back two parts is for upper and lower two halves, by the cylinder bolt -up together cylinder internally mounted has major assembly axle, impeller, blade, shaft coupling, be in simultaneously cylinder internally mounted has injector set, multistage baffle and vapor seal.
Description
Technical field
This utility model relates to a kind of back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project.
Background technology
Current heat supply network heating system is provided with steam turbine, in order to implement cogeneration of heat and power central heating mode as early as possible and meet environmental protection, energy-saving and emission-reduction requirement, needs existing heating system completes extraction for heat supply transformation.
Utility model content
The purpose of this utility model is to provide a kind of back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project, under conditions of can requiring meeting Gateway Station in Heating Network normal heating, reach rated generation amount requirement, and the stress design surplus of abundance is left according to relevant criterion and specification, add Source of Gateway Meter electricity volume, greatly reduce station service power consumption rate, reach effect of energy.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project in this utility model is dragged asynchronous generator by single-cylinder multistage back pressure turbine, the main assembled shaft of the most described single-cylinder multistage back pressure turbine couples described asynchronous sends out power shaft dynamo-electric, the power input lines of described asynchronous generator is directly incorporated into the bus-bar system of improvement project, wherein said cylinder multi-stage back pressure type steam turbine includes the cylinder of single cylinder structure, described cylinder is made up of forward and backward two parts, is linked into an integrated entity by vertical split；At forward and backward two-part horizontal flange, it is divided into upper and lower two halves, cylinder bolt tightens together, at described cylinder internal, main assembled shaft, impeller, blade, shaft coupling are installed；At described cylinder internal, nozzle sets, multistage dividing plate and packing are installed simultaneously.
Forward and backward two parts of described cylinder are steel-casting, this cylinder is provided with 2 air intakes, lay respectively at the left and right sides of described cylinder first half, being provided with steam exhaust structure at the latter half of described cylinder, described upper exhaust structure is by the steam inlet pipe road flexible connection of expansion joint with heat exchangers for district heating simultaneously.
The first half of described cylinder is connected with front-end bearing pedestal by semicircle flange, and described front-end bearing pedestal is placed on noseplate.
The latter half of described cylinder uses ram's horn form seat on rear bearing block, and described rear bearing block is placed on rear base plate.
The multistage dividing plate that described cylinder internal is arranged is 4 grades of dividing plates, and every one-level dividing plate is shroud welding type dividing plate, and described dividing plate is by hanging pin support on the inwall of described cylinder.
In the inner circle of every grade of described dividing plate, ring fills described packing, and often circle packing is set by four arc block rings and forms, and uses labyrinth+carbon crystalline substance combined sealing structure.
The electricity generating plan that this utility model uses back pressure turbine to drag asynchronous generator can recycle the pressure difference energy loss that heating is drawn gas, on the premise of ensureing central heating, station-service 6000V bus-bar system is added to by back pressure turbine asynchronous generating unit, thus add Source of Gateway Meter electricity volume, greatly reduce station service power consumption rate, reach effect of energy.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of back pressure turbine in this utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the utility model is elaborated.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project in this utility model uses back pressure turbine to drag the electricity generating plan of asynchronous generator, and the power input lines electricity of asynchronous generator is directly incorporated into auxiliary bus bar system.I.e. drawing heating from the steam guiding tube of 2 the 600MW back pressure turbines heated for heat supply network to draw gas, under declared working condition, extraction pressure design load is 1.03MPa, temperature 367 DEG C.Actually steam pressure is run in initial station is 0.5～0.8MPa, so extraction pressure is the most higher, there is the huge pressure reduction loss of energy, in order to make full use of this partial pressure differential energy loss, this utility model uses back pressure turbine to drag the electricity generating plan of asynchronous generator, the power shaft of asynchronous generator is i.e. connected in rotary shaft one end of back pressure turbine, it is directly incorporated into auxiliary bus bar system by asynchronous generator electricity, such that it is able to recycle the pressure difference energy loss that heating is drawn gas, on the premise of ensureing central heating, station-service 6000V bus-bar system is added to by back pressure turbine asynchronous generating unit, thus add Source of Gateway Meter electricity volume, greatly reduce station service power consumption rate, reach effect of energy.
As it is shown in figure 1, back pressure turbine is efficient single-cylinder multistage back pressure turbine, including cylinder 1, this cylinder 1 is single cylinder structure, is made up of forward and backward two parts, and front and back two parts are linked into an integrated entity by vertical split；Front and back two parts are divided into upper and lower two halves at horizontal flange, cylinder bolt tighten together, it is simple to the installation of the various parts of cylinder internal.
Before and after cylinder, two parts cylinder is steel-casting, form the cylinder 1 of a single cylinder structure, whole cylinder 1 is provided with 2 air intakes 2, lay respectively at the left and right sides end of first half, steam exhaust structure 3 on latter half is provided with simultaneously, this steam exhaust structure 3, by expansion joint and the road flexible connection of heat exchangers for district heating steam inlet pipe, uses for heat supply network heat supply.In the bottom of cylinder lower half, it is provided with drain port 15.
As shown in Figure 1, there is main assembled shaft 4 cylinder 1 is internally installed, main assembled shaft 4 is installed with impeller 5, and it is installed with more blades 6 in the end of impeller 5, it is provided with shaft coupling 7 at the two ends of main assembled shaft 4, wherein one end connects the power shaft of asynchronous generator by shaft coupling 7, and drags asynchronous generator generating.
Having nozzle sets 8 and multistage dividing plate 9 cylinder 1 is internally installed, nozzle sets 8 is shroud welded structure, and dividing plate 9 has 4 grades, is shroud welding type dividing plate, is supported on the inwall of cylinder 1 by hanging pin 10.In the inner circle of every grade of dividing plate 9, ring is equipped with packing 17, and often circle packing 17 is set by four arc block rings and forms, and uses labyrinth+carbon crystalline substance combined sealing structure, it is ensured that packing No leakage.Equipped with holddown spring 16 on each arc block.
The first half of cylinder is connected with front-end bearing pedestal 11 by semicircle flange, connect to have through shaft coupling 7 in the front end of main assembled shaft 4 and be positioned at the rotary shaft 18 of front-end bearing pedestal 11, rotary shaft 18 is utilized to connect the power shaft of asynchronous generator, front-end bearing pedestal 11 is placed on noseplate 12, is provided with oil-way on the noseplate 12 faying face with front-end bearing pedestal 11.Center is provided with longitudinal feather key, and front-end bearing pedestal can slide axially, and uses molybdenum bisuphide oil preparation to make lubricant.In its sliding surface both sides, it is also equipped with thermal expansion monitoring and protecting instrument, indicates absolute expansion.At the internally installed rotational speed probe of front-end bearing pedestal, bearing temperature, vibration probe and axial displacement detecting probe etc.；Each probe lead wire is passed by pigtail splice, and platinum resistance thermometer sensor, is connected by connector assembly.About front-end bearing pedestal structure be installed as commercially available matured product, no longer describe in detail.
The latter half of cylinder uses ram's horn form seat on rear bearing block 13, and rear bearing block 13 is placed on rear base plate 14, install in place after, the alignment pin on align reaming lower margin flange face.Rear bearing block 13 is built with steam turbine rear bearing, barring gear, coupling shield etc..Barring gear in this utility model uses the little gear set of worm-gear toothing mechanical barring gear, i.e. jiggering on band spiral fluted worm-wheel shaft, passes through feeding device, it is possible to achieve manually put into jiggering.It is installed on lubricating oil electromagnetic valve on rear bearing block 13 and provides lubricating oil to jiggering gear.All there is lubricating oil oil inlet and oil return mouth rear bearing block both sides, it is simple to unit left-hand or dextrad are arranged.Rear bearing block internally installed bearing probe and vibration probe simultaneously, probe lead wire is passed by pigtail splice, and platinum resistance thermometer sensor, is connected by connector assembly.About rear bearing block structure be installed as commercially available matured product, no longer describe in detail.
Claims (6)
1. the back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project, it is characterized in that, asynchronous generator is dragged by single-cylinder multistage back pressure turbine, the main assembled shaft of the most described single-cylinder multistage back pressure turbine couples via shaft coupling described asynchronous sends out power shaft dynamo-electric, the power input lines of described asynchronous generator is directly incorporated into the bus-bar system of improvement project, wherein said cylinder multi-stage back pressure type steam turbine includes the cylinder of single cylinder structure, described cylinder is made up of forward and backward two parts, is linked into an integrated entity by vertical split；At forward and backward two-part horizontal flange, it is divided into upper and lower two halves, cylinder bolt tightens together, at described cylinder internal, main assembled shaft, impeller, blade, shaft coupling are installed；At described cylinder internal, nozzle sets, multistage dividing plate and packing are installed simultaneously.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project the most according to claim 1, it is characterized in that, forward and backward two parts of described cylinder are steel-casting, this cylinder is provided with 2 air intakes, lay respectively at the left and right sides of described cylinder first half, being provided with steam exhaust structure at the latter half of described cylinder, described upper exhaust structure is by the steam inlet pipe road flexible connection of expansion joint with heat exchangers for district heating simultaneously.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project the most according to claim 2, it is characterised in that the first half of described cylinder is connected with front-end bearing pedestal by semicircle flange, and described front-end bearing pedestal is placed on noseplate.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project the most according to claim 2, it is characterised in that the latter half of described cylinder uses ram's horn form seat on rear bearing block, and described rear bearing block is placed on rear base plate.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project the most according to claim 2, it is characterized in that, the multistage dividing plate that described cylinder internal is arranged is 4 grades of dividing plates, every one-level dividing plate is shroud welding type dividing plate, and described dividing plate is by hanging pin support on the inwall of described cylinder.
The back pressure turbine asynchronous generating unit being applicable to Gateway Station in Heating Network improvement project the most according to claim 2, it is characterized in that, in the inner circle of every grade of described dividing plate, ring fills described packing, and often circle packing is set by four arc block rings and forms, and uses labyrinth+carbon crystalline substance combined sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521102467.3U CN205445698U (en) | 2015-12-28 | 2015-12-28 | Back pressure turbine asynchronous generator group suitable for heat supply network initial station improvement project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521102467.3U CN205445698U (en) | 2015-12-28 | 2015-12-28 | Back pressure turbine asynchronous generator group suitable for heat supply network initial station improvement project |
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| Publication Number | Publication Date |
|---|---|
| CN205445698U true CN205445698U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521102467.3U Expired - Fee Related CN205445698U (en) | 2015-12-28 | 2015-12-28 | Back pressure turbine asynchronous generator group suitable for heat supply network initial station improvement project |
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| Country | Link |
|---|---|
| CN (1) | CN205445698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306874A (en) * | 2018-07-10 | 2019-02-05 | 唐山三友集团兴达化纤有限公司 | A kind of small differential pressure small-power steamer asynchronous generating device of vertical low-pressure steam |
-
2015
- 2015-12-28 CN CN201521102467.3U patent/CN205445698U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306874A (en) * | 2018-07-10 | 2019-02-05 | 唐山三友集团兴达化纤有限公司 | A kind of small differential pressure small-power steamer asynchronous generating device of vertical low-pressure steam |
| CN109306874B (en) * | 2018-07-10 | 2021-09-03 | 唐山三友集团兴达化纤有限公司 | Vertical low-pressure steam small-differential-pressure small-power steam turbine asynchronous power generation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20201228 |