CN203476405U - 350MW supercritical three-cylinder and double-pumping steam turbine - Google Patents
350MW supercritical three-cylinder and double-pumping steam turbine Download PDFInfo
- Publication number
- CN203476405U CN203476405U CN201320614040.6U CN201320614040U CN203476405U CN 203476405 U CN203476405 U CN 203476405U CN 201320614040 U CN201320614040 U CN 201320614040U CN 203476405 U CN203476405 U CN 203476405U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- extraction
- pumping
- pressure cylinder
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a supercritical three-cylinder and double-pumping steam turbine, in particular to a 350MW supercritical three-cylinder and double-pumping steam turbine to solve the problems that according to an existing supercritical steam turbine, due to the fact that a rotating partition board structure is utilized for steam pumping, the steam pumping pressure and the steam pumping volume cannot be effectively adjusted, and clamping easily happens under the high parameter steam pumping pressure. The three-cylinder and double-pumping steam turbine comprises a front bearing box, a high pressure cylinder, a middle bearing box, a medium pressure cylinder, a communicated pipe with a butterfly valve, a low pressure cylinder, a base cylinder valve shell and three steam pumping adjusting valves, the front bearing box, the high pressure cylinder, the middle bearing box, the medium pressure cylinder and the low pressure cylinder are connected in sequence, the communicated pipe with the butterfly valve is fixedly connected to one side of the outer wall of the upper end of the medium pressure wall in a communicated mode, the base cylinder valve shell is fixedly connected to the middle of the outer wall of the upper end of the medium pressure cylinder, and the three steam pumping adjusting valves are installed on the upper end face of the base cylinder valve shell. The 350MW supercritical three-cylinder and double-pumping steam turbine is suitable for steam turbine electricity generation.
Description
Technical field
The utility model relates to the two extraction turbines of a kind of overcritical three cylinders.
Background technique
The extraction steam for factories pressure putting into operation at present requires the supercritical steam turbine unit more than 1.6MPa to adopt rotary separator to draw gas, restriction due to rotary separator self structure, cannot realize effective adjustment of extraction pressure and the amount of drawing gas, and under high parameter extraction pressure easy bite.
Model utility content
The utility model adopts rotary separator structure to draw gas for solving existing supercritical steam turbine unit, cannot realize effective adjustment of extraction pressure and the amount of drawing gas, and the problem of easy bite under high parameter extraction pressure, and then provide overcritical three cylinders of a kind of 350MW two extraction turbines.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: the two extraction turbines of overcritical three cylinders of a kind of 350MW of the present utility model, the two extraction turbines of described three cylinders comprise front bearing box, high-pressure cylinder, middle (center) bearing case, intermediate pressure cylinder, with the connecting tube of butterfly valve, low pressure (LP) cylinder, seat cylinder valve shell and three extraction control valves, front bearing box, high-pressure cylinder, middle (center) bearing case, intermediate pressure cylinder is connected layout successively with low pressure (LP) cylinder, connecting tube with butterfly valve is communicated with a side that is fixed in intermediate pressure cylinder upper end outer wall, seat cylinder valve shell is fixed in the middle part of the upper end outer wall of intermediate pressure cylinder, three extraction control valves are installed on a cylinder valve shell upper-end surface.
The utility model compared with prior art has following beneficial effect:
The utility model adopts the structure that the alternative rotary separator of three extraction control valves is set on intermediate pressure cylinder, by adjust the valve opening of three extraction control valves simultaneously, realization is to the extraction pressure of extraction steam for factories pressure requirement more than 1.6MPa and effective adjustment of the amount of drawing gas, reduce the consumption of primary energy, improved the benefit of power plant.Secondly, between the valve rod of this structure and sleeve, have reasonable clearance, and stem lower portion leads by feather key, can effectively solve the bite problem that valve rod causes, make the operation of unit safer, more reliable, and solved in the past the easy bite problem of rotary separator under high parameter extraction pressure.Steam turbine complete machine connection and reasonable arrangement of the present utility model, can meet extraction steam for factories pressure and reach the demand that 1.6MPa is above, the maximum amount of drawing gas is 200t/h.
Accompanying drawing explanation
Fig. 1 is that master of the present utility model looks erection drawing, and Fig. 2 is the plan view of Fig. 1.
Embodiment
Embodiment one: in conjunction with Fig. 1 and Fig. 2 explanation, the two extraction turbines of overcritical three cylinders of a kind of 350MW of present embodiment comprise front bearing box 1, high-pressure cylinder 2, middle (center) bearing case 3, intermediate pressure cylinder 4, with the connecting tube 5 of butterfly valve, low pressure (LP) cylinder 6, seat cylinder valve shell 7 and three extraction control valves 8, front bearing box 1, high-pressure cylinder 2, middle (center) bearing case 3, intermediate pressure cylinder 4 is connected layout successively with low pressure (LP) cylinder 6, connecting tube 5 with butterfly valve is communicated with a side that is fixed in intermediate pressure cylinder 4 upper end outer walls, seat cylinder valve shell 7 is fixed in the middle part of the upper end outer wall of intermediate pressure cylinder 4, three extraction control valves 8 are installed on cylinder valve shell 7 upper-end surface.
Embodiment two: in conjunction with Fig. 2 explanation, the two extraction turbines of overcritical three cylinders of a kind of 350MW of present embodiment also comprise that two main vapour of high pressure regulate the main vapour of 9, two high pressure of union valve to regulate union valve 9 to be communicated with respectively the both sides that are arranged on high-pressure cylinder 2.So design, makes complete machine characteristics of compact layout of the present utility model, more reasonable.Other compositions and annexation are identical with embodiment one.
Embodiment three: in conjunction with Fig. 2 explanation, the two extraction turbines of overcritical three cylinders of a kind of 350MW of present embodiment also comprise two hotter main vapour regulate 10, two of union valves hotter main vapour regulate union valve 10 to be communicated with respectively the both sides that are arranged on intermediate pressure cylinder 4.So design, makes complete machine characteristics of compact layout of the present utility model, more reasonable.Other compositions and annexation are identical with embodiment one or two.
Embodiment four: in conjunction with Fig. 2 explanation, 8 one-tenth settings in one line of three extraction control valves of present embodiment, and the perpendicular setting of center line of the line of centres of three extraction control valves 8 and seat cylinder valve 7.So design, makes complete machine characteristics of compact layout of the present utility model, more reasonable.Other compositions and annexation are identical with embodiment one or two.
Working principle
When steam turbine set is normally moved, three extraction control valves remain full-gear, are valve stem spacing structure.For guaranteeing the minimum discharge of low pressure (LP) cylinder, set the minimum aperture requirement of three extraction control valves, in the time of need meeting user's extraction steam for factories parameter, by adjust the valve opening of three extraction control valves simultaneously, in adjustable extent, realize effective adjustment of extraction pressure and the amount of drawing gas.
Control system is drawn gas in can input situation, digital electro-hydraulic control system (DEH) system drives electrohydraulic control that main valve plug is moved by control signal, control servovalve passage, make high pressure fireresistant oil enter oil engine oil cylinder active chamber, oil engine piston is moved, drive extraction control valve descending, valve opening reduces gradually, before the valve of extraction control valve, steam enters the vapour amount minimizing of steam turbine rear portion, and the quantitative change of drawing gas is large.Or pressure oil is released from oil cylinder active chamber, and rely on spring force that piston reverses direction is moved, drive extraction control valve up, valve opening increases gradually, and before the valve of extraction control valve, steam enters the vapour amount increase of steam turbine rear portion, and the amount of drawing gas reduces.When the valve of extraction control valve moves, drive Linear displacement transducer (LVDT) simultaneously, convert valve displacement to electric signal, as the signal plus of sending here after negative-feedback signal and the processing of previous calculations machine, because both polarity are contrary, be actually and subtract each other, only after original input signal and feedback signal addition, when the signal that makes to input servoamplifier is zero, the main valve of servovalve is got back to neutral position, no longer include high pressure oil and lead to oil engine oil cylinder active chamber, now extraction control valve just stops moving, and rests on a new working position.
Claims (4)
1. two extraction turbines of overcritical three cylinders of 350MW, the two extraction turbines of described three cylinders comprise front bearing box (1), high-pressure cylinder (2), middle (center) bearing case (3), intermediate pressure cylinder (4), with the connecting tube (5) of butterfly valve, low pressure (LP) cylinder (6) and seat cylinder valve shell (7), front bearing box (1), high-pressure cylinder (2), middle (center) bearing case (3), intermediate pressure cylinder (4) is connected layout successively with low pressure (LP) cylinder (6), connecting tube (5) with butterfly valve is communicated with a side that is fixed in intermediate pressure cylinder (4) upper end outer wall, seat cylinder valve shell (7) is fixed in the middle part of the upper end outer wall of intermediate pressure cylinder (4), it is characterized in that: the two extraction turbines of described three cylinders also comprise three extraction control valves (8), three extraction control valves (8) are installed on cylinder valve shell (7) upper-end surface.
2. two extraction turbines of overcritical three cylinders of a kind of 350MW according to claim 1, it is characterized in that: the two extraction turbines of described three cylinders also comprise that two main vapour of high pressure regulate union valve (9), and two main vapour of high pressure regulate union valve (9) to be communicated with respectively the both sides that are arranged on high-pressure cylinder (2).
3. two extraction turbines of overcritical three cylinders of a kind of 350MW according to claim 1 and 2, it is characterized in that: the two extraction turbines of described three cylinders also comprise two hotter main vapour regulate union valves (10), two hotter main vapour regulate union valve (10) to be communicated with respectively the both sides that are arranged on intermediate pressure cylinder (4).
4. two extraction turbines of overcritical three cylinders of a kind of 350MW according to claim 1 and 2, it is characterized in that: three extraction control valves (8) become setting in one line, and the line of centres of three extraction control valves (8) and a perpendicular setting of center line of cylinder valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614040.6U CN203476405U (en) | 2013-09-30 | 2013-09-30 | 350MW supercritical three-cylinder and double-pumping steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614040.6U CN203476405U (en) | 2013-09-30 | 2013-09-30 | 350MW supercritical three-cylinder and double-pumping steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476405U true CN203476405U (en) | 2014-03-12 |
Family
ID=50224750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320614040.6U Expired - Lifetime CN203476405U (en) | 2013-09-30 | 2013-09-30 | 350MW supercritical three-cylinder and double-pumping steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925011B (en) * | 2014-04-17 | 2015-09-16 | 哈尔滨汽轮机厂有限责任公司 | A kind of 9F level black soy sauce axial exhaust turbine |
-
2013
- 2013-09-30 CN CN201320614040.6U patent/CN203476405U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925011B (en) * | 2014-04-17 | 2015-09-16 | 哈尔滨汽轮机厂有限责任公司 | A kind of 9F level black soy sauce axial exhaust turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103899586B (en) | A kind of super sized type guillotine shear synchronization hydraulic system based on flow divider-combiner | |
| CN103807239B (en) | A kind of shear plate synchronous control hydraulic system based on Dual-output shaft motor | |
| CN202500840U (en) | Electrohydraulic actuating mechanism with servo proportioning valve | |
| CN201103527Y (en) | Capacity type hydraulic driving reciprocating compressor | |
| CN203348203U (en) | Speed-regulating hydraulic control valve group of large-flow two-way cartridge valve | |
| CN101463846A (en) | Hydraulic system of full-hydraulic metal sheet straightener | |
| CN203476405U (en) | 350MW supercritical three-cylinder and double-pumping steam turbine | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN203230678U (en) | Hydraulic actuator inlet and outlet flow pressure independent controlling system | |
| CN205918670U (en) | Beat sign indicating number hydraulic press hydraulic control system | |
| CN215908145U (en) | Gate pump hydraulic cylinder multi-cylinder synchronization system | |
| CN100557231C (en) | Electrohydraulic synchronous cylinder type valve servo synchronous control system | |
| CN205401284U (en) | When synchronous operation hydro -cylinder of flow distribution formula | |
| CN204458574U (en) | A kind of punch press plug-in unit controls the hydraulic control system of two oil cylinders | |
| CN103644001A (en) | Turboset for dynamically regulating double-extraction heating steam | |
| CN203362682U (en) | Differential oil supplementing hydraulic control device of electro-hydraulic proportional cartridge valve | |
| CN204431683U (en) | A kind of injection machine servo oil circuit control structure | |
| CN208185093U (en) | The hydraulic system of multistation punching shear production line | |
| CN202883548U (en) | Grate cooler buffering device | |
| CN204628137U (en) | Novel vertical mill pressurized hydraulic system | |
| CN203783999U (en) | Ultra-large type plate shearing machine synchronous hydraulic system based on flow distributing and collecting valve | |
| CN201818590U (en) | Hydraulic valve stand with special functions | |
| CN203604296U (en) | Synchronous oil cylinder control oil circuit device with improved structure | |
| CN202510141U (en) | Hydraulic control one-way valve | |
| CN206738269U (en) | Adjustable speed positions pneumohydraulic pressure-cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |
|
| CX01 | Expiry of patent term |