CN202417623U - Control device of regulating valve for steam turbine - Google Patents
Control device of regulating valve for steam turbine Download PDFInfo
- Publication number
- CN202417623U CN202417623U CN2012200509179U CN201220050917U CN202417623U CN 202417623 U CN202417623 U CN 202417623U CN 2012200509179 U CN2012200509179 U CN 2012200509179U CN 201220050917 U CN201220050917 U CN 201220050917U CN 202417623 U CN202417623 U CN 202417623U
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- China
- Prior art keywords
- fitting seat
- control device
- valve
- valve lever
- gusset plate
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- 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
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- 230000001105 regulatory effect Effects 0.000 title abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000033001 locomotion Effects 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model discloses a control device of a regulating valve for a steam turbine. The control device comprises a valve rod (1), a cylinder (5), a mounting base (2) and a displacement sensor (4), wherein the valve rod (1) is connected with a valve core of the regulating valve; the cylinder (5) comprises a piston rod (51); the mounting base (2) fixedly connected with the valve rod (1); the displacement sensor (4) is fixedly connected with the mounting base (2); the piston rod (51) of the cylinder (5) is fixedly connected with the valve rod (1); and the control device also comprises a reinforcing structure (3), wherein the reinforcing structure (3) is fixedly arranged between the valve rod (1) and the mounting base (2). The control device can be stably installed, and the signal feeding back accuracy is high.
Description
Technical field
The utility model relates to the steam turbine field, particularly, relates to a kind of control device of turbine governor valve.
Background technique
Steam turbine is the rotary power machinery that the transformation of energy of steam is become mechanical work, and main prime mover as generating usefulness also can directly drive various pumps, blower fan, compressor and propeller for vessels etc.Steam turbine generally is made up of rotating part and stationary part.Wherein, said rotating part comprises main shaft, impeller, moving vane and coupling etc.; Said stationary part comprises admission part, cylinder, dividing plate and static cascade, packing and bearing etc.
The modulating valve of steam turbine is mainly used in the inlet of control steam, thereby control reaches the control to the steam turbine unit operation to the active force of rotor.Existing modulating valve generally adopts digital electro-hydraulic control system control, and this regulating system generally is provided with control device to modulating valve, thereby controls the valve element position state of modulating valve, reaches controlling the aperture of modulating valve.
Usually; As shown in Figure 1; Control device comprises the valve lever 1, the oil cylinder 5 with piston rod 51 that are connected with the spool of modulating valve, is fixedly connected on fitting seat 2 and the displacement transducer 4 that is fixedly connected with fitting seat 2 on the valve lever 1, and the piston rod 51 of oil cylinder 5 is fixedly connected with valve lever 1.Usually, displacement transducer 4 comprises motion bar 41 and fixed coil 42, and an end of motion bar 41 is fixedly connected with said fitting seat 2, and the other end of motion bar 41 is arranged in the said fixed coil 42 movably.
When the inlet of the steam of needs control steam turbine; Controller transmits control signal and makes oil cylinder 5 move; Be piston rod 51 motions of oil cylinder 5; Make fitting seat 2 move, thereby 1 motion of operated valve bar is to drive the valve core movement of modulating valve thereupon, finally makes the aperture of modulating valve change with the control air inflow.Simultaneously, fitting seat 2 motions drive the motion bar 41 of displacement transducer 4 with respect to fixed coil 42 motions, thereby produce feedback signal, with the valve element position of feedback regulation valve.
But in the unit running process of steam turbine; Steam in the steam turbine can impact to modulating valve; Thereby produce vibration and cause fitting seat 2 vibrations; Motion bar 41 movement therewith that are fixedly connected with fitting seat 2, thereby displacement transducer 4 can produce wrong feedback signal, the false signal that the valve element position that causes controller to receive modulating valve changes.Therefore, can cause controller constantly to transmit control signal modulating valve regulated making it reach predetermined aperture, finally cause modulating valve switch repeatedly, influence the stability of system.
Therefore, need a kind of stable installation, the feedback signal control device of modulating valve more accurately.
The model utility content
The purpose of the utility model provides a kind of control device of modulating valve, and this control device can stably be installed, and the accuracy of feedback signal is higher.
To achieve these goals; The utility model provides a kind of control device of turbine governor valve; Wherein, This control device comprises the valve lever, the oil cylinder with piston rod that are connected with the spool of said modulating valve, is fixedly connected on fitting seat and the displacement transducer that is fixedly connected with this fitting seat on the said valve lever; The piston rod of said oil cylinder is fixedly connected with said valve lever, and said control device also comprises reinforced structure, and this reinforced structure is fixedly installed between said valve lever and the said fitting seat.
Preferably, said displacement transducer comprises motion bar and fixed coil, and an end of this motion bar is fixedly connected with said fitting seat, and the other end of said motion bar is arranged in the said fixed coil movably.
Preferably, said fixed coil is fixedly installed on the outer wall of said oil cylinder.
Preferably, said valve lever is connected with said fitting seat vertical fixing, and said reinforced structure is a gusset plate, fits in a limit of this gusset plate and the side of said valve lever, and the upper surface of another limit and said fitting seat is fitted.
Preferably, said gusset plate is a triangle.
Preferably, said gusset plate is at least two that parallel interval is provided with.
Preferably, said gusset plate is welded between said valve lever and the said fitting seat.
Pass through technique scheme; In the unit running process of steam turbine; Owing to be set with reinforced structure between valve lever and the fitting seat; This reinforced structure can be reinforced being connected between valve lever and the fitting seat, makes fitting seat be difficult for owing to the steam in the steam turbine trembles the impact of modulating valve.More specifically; Because the structure of fitting seat is more stable; Be difficult for producing vibration, make the motion bar that is fixedly connected with fitting seat can not produce thereupon and move up and down, thereby the feedback signal that displacement transducer produces be more accurate; And then controller is more accurate to controlling of modulating valve, and the stability of system is better.Wherein, reinforced structure can be the structure of various forms and shape, and for example strengthening rib, stiffening plate or reinforced block etc. as long as can reinforce the connection between valve lever and the fitting seat, reach position and the structure of stablizing fitting seat and get final product.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the schematic representation of feedback means of the modulating valve of existing technology;
Fig. 2 is the schematic representation of feedback means of the modulating valve of the utility model.
Description of reference numerals
1 valve lever, 2 fitting seats
3 reinforced structures, 4 displacement transducers
5 oil cylinders
41 motion bars, 42 fixed coils
51 piston rods
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
As shown in Figure 2; The control device of the turbine governor valve of the mode of execution of the utility model; Wherein, This control device comprises the valve lever 1, the oil cylinder 5 with piston rod 51 that are connected with the spool of said modulating valve, is fixedly connected on fitting seat 2 and the displacement transducer 4 that is fixedly connected with this fitting seat 2 on the said valve lever 1; The piston rod 51 of said oil cylinder 5 is fixedly connected with said valve lever 1, and said control device also comprises reinforced structure 3, and this reinforced structure 3 is fixedly installed between said valve lever 1 and the said fitting seat 2.
In the unit running process of steam turbine; Owing to be set with reinforced structure 3 between valve lever 1 and the fitting seat 2; This reinforced structure 3 can be reinforced being connected between valve lever 1 and the fitting seat 2, makes fitting seat 2 be difficult for owing to the steam in the steam turbine trembles the impact of modulating valve.More specifically; Because the structure of fitting seat 2 is more stable; Be difficult for producing vibration, make the motion bar 41 that is fixedly connected with fitting seat 2 can not produce thereupon and move up and down, thereby the feedback signal that displacement transducer 4 produces is more accurate; And then controller is more accurate to controlling of modulating valve, and the stability of system is better.
Wherein, reinforced structure 3 can be the structure of various forms and shape, and for example strengthening rib, stiffening plate or reinforced block etc. as long as can reinforce the connection between valve lever 1 and the fitting seat 2, reach position and the structure of stablizing fitting seat 1 and get final product.
Fixed coil 42 can adopt variety of way to be fixed on different positions, and preferably, said fixed coil 42 is fixedly installed on the outer wall of said oil cylinder 5.Since the position of oil cylinder 5 and displacement transducer 4 near, and oil cylinder 5 structures are more firm, fixed coil 42 is fixed on fixed coil 42 on the outer wall of oil cylinder 5 through press strip and fastening piece usually, thereby makes the fixed-site of fixed coil 42, structure is firm.
For structure and the installation of simplifying reinforced structure 3; Preferably, said valve lever 1 is connected with said fitting seat 2 vertical fixing, and said reinforced structure 3 is a gusset plate; Fit in the limit of this gusset plate and the side of said valve lever 1, the upper surface applying of another limit and said fitting seat 2.Usually, in order to make the displacement of spool to pass to displacement transducer 4 exactly through valve lever 1 and fitting seat 2, and can accurately feed back signal to controller, valve lever 1 is connected with fitting seat 2 vertical fixing.Gusset plate can form the plate of Any shape, for example triangle, rectangular etc., and gusset plate can be one; Also can be for a plurality of; Can connect valve lever 1 and fitting seat 2 through welding, various ways such as bonding, make both connections more firmly, stable, avoided the vibration of fitting seat 2.
In order further to improve the connective stability between valve lever 1 and the fitting seat 2, preferably, said gusset plate is a triangle.Because triangle has stability, gusset plate forms the shape of right-angled triangle, thereby can be arranged on simply and easily between valve lever 1 and the fitting seat 2, plays the effect of stablizing linkage structure.
In order to reach better firm effect, make to be connected more firmly between valve lever 1 and the fitting seat 2 that preferably, said gusset plate is at least two that parallel interval is provided with.Strengthened being connected between valve lever 1 and the fitting seat 2, stablized the structure and the position of fitting seat 2, avoided fitting seat 2 that vibration takes place and cause system unstable.
For the ease of being connected of gusset plate and fitting seat 2, preferably, the material of said gusset plate is identical with the material of said fitting seat 2.Because the join strength that connects with material is bigger, for example bonding, welding etc., thereby gusset plate is more firm with being connected of fitting seat 2,, structural integrity is better, prevents that better fitting seat 2 from vibrating and cause feedback signal inaccurate.Gusset plate, fitting seat 2 and valve lever 1 generally all adopt steel.
The setting of gusset plate for ease, preferably, said gusset plate is welded between said valve lever 1 and the said fitting seat 2.Because gusset plate, fitting seat 2 and valve lever 1 are generally processed by iron and steel, so it is convenient to adopt the mode of welding that gusset plate is set, connect also more firmly, structural integrity is better.Gusset plate also can be bonding or through fixed connections such as bolts.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove in addition; Each concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner; For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (7)
1. the control device of a turbine governor valve; It is characterized in that; This control device comprises the valve lever (1), the oil cylinder (5) with piston rod (51) that are connected with the spool of said modulating valve, is fixedly connected on fitting seat (2) and the displacement transducer (4) that is fixedly connected with this fitting seat (2) on the said valve lever (1); The piston rod (51) of said oil cylinder (5) is fixedly connected with said valve lever (1); Said control device also comprises reinforced structure (3), and this reinforced structure (3) is fixedly installed between said valve lever (1) and the said fitting seat (2).
2. control device according to claim 1; It is characterized in that; Said displacement transducer (4) comprises motion bar (41) and fixed coil (42); One end of this motion bar (41) is fixedly connected with said fitting seat (2), and the other end of said motion bar (41) is arranged in the said fixed coil (42) movably.
3. control device according to claim 2 is characterized in that, said fixed coil (42) is fixedly installed on the outer wall of said oil cylinder (5).
4. control device according to claim 1; It is characterized in that; Said valve lever (1) is connected with said fitting seat (2) vertical fixing; Said reinforced structure (3) is a gusset plate, fits in a limit of this gusset plate and the side of said valve lever (1), and the upper surface of another limit and said fitting seat (2) is fitted.
5. control device according to claim 4 is characterized in that, said gusset plate is a triangle.
6. according to any described control device among the claim 1-5, it is characterized in that said gusset plate is at least two that parallel interval is provided with.
7. control device according to claim 6 is characterized in that, said gusset plate is welded between said valve lever (1) and the said fitting seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200509179U CN202417623U (en) | 2012-02-16 | 2012-02-16 | Control device of regulating valve for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200509179U CN202417623U (en) | 2012-02-16 | 2012-02-16 | Control device of regulating valve for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417623U true CN202417623U (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200509179U Expired - Lifetime CN202417623U (en) | 2012-02-16 | 2012-02-16 | Control device of regulating valve for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018005429A1 (en) * | 2016-06-29 | 2018-01-04 | General Electric Company | Method and system for monitoring non-rotating turbomachine parts |
| CN112377274A (en) * | 2020-10-22 | 2021-02-19 | 呼和浩特科林热电有限责任公司 | LVDT prevents fracture device and steam turbine |
-
2012
- 2012-02-16 CN CN2012200509179U patent/CN202417623U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018005429A1 (en) * | 2016-06-29 | 2018-01-04 | General Electric Company | Method and system for monitoring non-rotating turbomachine parts |
| CN112377274A (en) * | 2020-10-22 | 2021-02-19 | 呼和浩特科林热电有限责任公司 | LVDT prevents fracture device and steam turbine |
| CN112377274B (en) * | 2020-10-22 | 2023-03-21 | 呼和浩特科林热电有限责任公司 | LVDT prevents fracture device and steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |