CN2898469Y - Steam flow adjusting valve for steam turbine - Google Patents
Steam flow adjusting valve for steam turbine Download PDFInfo
- Publication number
- CN2898469Y CN2898469Y CN 200520060424 CN200520060424U CN2898469Y CN 2898469 Y CN2898469 Y CN 2898469Y CN 200520060424 CN200520060424 CN 200520060424 CN 200520060424 U CN200520060424 U CN 200520060424U CN 2898469 Y CN2898469 Y CN 2898469Y
- Authority
- CN
- China
- Prior art keywords
- main valve
- linear displacement
- piston
- displacement transducer
- push rod
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 210000002583 cell-derived microparticle Anatomy 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 239000002889 diamagnetic material Substances 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- 239000012636 effector Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Control Of Turbines (AREA)
Abstract
The utility model discloses a steam flow adjusting valve for steam turbine, which comprises a main valve, wherein,a pushing ram is arranged on the main valve core in the main valve; a barrel is fixed with one side of the main valve; the barrel and the electro-hydraulic proportional valve are connected through the inlet , outlet path, and the inlet, outlet path is arranged with the two sides of the piston; the piston is connected with the push ram of the main valve core; a linear displacement sensor is connected on the push ram, the output of the linear displacement sensor is connected with the electromagnet of the electro-hydraulic proportional valve via the control circuit. The position of the sensible main valve core of the linear displacement sensor, through controlling the electro-hydraulic proportional valve, thereby, controls the position of piston, and the purpose of controlling the position of the main valve core, controlling the steam flux can be achieved.
Description
Technical field:
The utility model relates to a kind of steam turbine steam flow control valve.
Background technique:
The steam temperature reducing and pressure reducing valve that existing steam turbine delivery of steam control system is used is the control valve of switch type, handle control mode manual control formula and electric control formula are arranged, principle is to handle gate or valve core movement by manual or motor driving, and then the break-make that in pipeline, flows of control steam, it controls function singleness, can not satisfy the requirement of technological progress to single valve door multifunction, can not realize that digitizing dynamically controls, and it is slow to handle the control procedure reaction, actuation time is long, can't fully satisfy automation control and rapid-action demand.
The model utility content:
It is rapid that the purpose of this utility model provides a kind of action response, and driving force is big and stable, control valve openings of sizes arbitrarily, thus control steam flow arbitrarily, and the control accuracy height, reliable and stable reduction valve.
The purpose of this utility model is achieved in that
A kind of steam turbine steam flow control valve, comprise main valve body, on the main valve plug of main valve body inside push rod is arranged, main valve body one side stationary housing, cylinder body and electrohydraulic proportional directional valve are by linking to each other into and out of oil duct, and in the piston both sides, piston links to each other with the push rod of main valve plug into and out of oil duct, be connected with linear displacement transducer on push rod, the output terminal of linear displacement transducer links to each other with the electromagnet of electrohydraulic proportional directional valve by control circuit.
The utility model is by the position of linear displacement transducer induction main valve plug, compare with the input data of the value of the establishing circuit of control circuit, when the position of main valve plug and input value are not inconsistent, linear displacement transducer outputs signal to the comparison circuit of control circuit, through comparing, the current of electromagnet at output signal control electrohydraulic proportional directional valve two ends, electromagnet produces magnetic, attract its spool to depart from the equilibrium position to respective direction, oil circuit is communicated with, the oil pressure of piston one side increases, pressure oil enters in the cylinder body, promoting piston moves to respective direction, and the drive main valve plug moves to respective direction, when main valve plug moves to desired location, comparison circuit cuts off the current of electromagnet at electrohydraulic proportional directional valve two ends, and electromagnet loses magnetism, and its spool is replied the equilibrium position, oil circuit disconnects, hydraulic oil sealing in the cylinder body, and keep piston position motionless, thus make main valve plug remain on definite position, realize any control valve openings of sizes, its control accuracy height can reach 01mm, and because the utilization hydraulic system, main valve plug motion driving force is big, and is reliable and stable.Owing to utilize the ferroelectric circulation of circuit controling electromagnetism disconnected, be swift in response.Simultaneously, because the value of the establishing circuit of the value of establishing device can be connected with real-time monitoring circuit, help realizing the dynamic auto control of steam flow control valve, and it is fast to handle the control procedure reaction, actuation time is short, can fully satisfy automation control and rapid-action demand.
Above-mentioned control circuit is a prior art, and wherein comparison circuit can wait by comparator or single-chip microcomputer and realize, the value of establishing circuit can wait by storage or rheostat and realize.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment:
A kind of steam turbine steam flow control valve, comprise main valve body 1, on the main valve plug 11 of main valve body 1 inside push rod 12 is arranged, main valve body 1 one side stationary housings 2, cylinder body 2 and electrohydraulic proportional directional valve 3 are by linking to each other into and out of oil duct 4, and in piston 5 both sides, piston 5 links to each other with the push rod 12 of main valve plug 11 into and out of oil duct 4, be connected with linear displacement transducer 6 on push rod 12, the output terminal of linear displacement transducer 6 links to each other with the electromagnet 31 of electrohydraulic proportional directional valve by control circuit.
Wherein electrohydraulic proportional directional valve 3 is a prior art, comprise spool 32, spool 32 can be along axial-movement in valve body 33, and spool 32 is fixed on valve 3 inner equilibrium positions by multiple medi-spring 34, there is electromagnet 31 at the valve body two ends, and electrohydraulic proportional directional valve has oil input channel 35 and back oil road 36 in addition.
Described comparer and the value of establishing circuit are prior art, and wherein comparer can be realized by simple comparison circuit, also can wait by single-chip microcomputer and realize; If the value circuit can be realized by simple rheostat, also can realize by modes such as storagies.
Described piston 5 is connected with piston rod 51, and piston rod 51 is connected with push rod 12.
Described piston 5 is consistent or parallel with the axial direction of main valve plug 11.
Described linear displacement transducer 6 is connected with piston rod 51 or push rod 12 by connecting rod 61.
In the present embodiment, described linear displacement transducer is made up of linear displacement transducer motion bar 62 and displacement transducer ectosome 63; Linear displacement transducer motion bar 62 is formed by connecting by about two sections, be inserted in the ectosome 63 in section be soft magnetic material, outer section is a diamagnetic material; Be placed with primary coils and secondary winding in the shell of ectosome 63 vertically, the electrical signal that the external size of primary coils is stable, secondary winding is used for induction (output) position signal, section on the motion bar 62, be that the soft magnetism section is in diverse location, cause induction field intensity difference, secondary winding will induce the strong and weak electricity signal of corresponding diverse location.The signal that secondary winding is sensed, be that the signal that main valve plug position signal trap is collected can constantly be delivered to outside comparer, comparer also can be constantly that the effector is given main valve opening control signal, compare union with it and handle, modulator control signal is made appropriate reaction to electrohydraulic proportional directional valve.
When new main valve opening signal of the given input of effector during to the value of establishing circuit, the signal that linear displacement transducer 6 is sensed is the position of the main valve plug 11 of corresponding original opening, comparer can be according to new main valve opening signal, compare with the signal of sensing, if difference is arranged, output signal is arrived electrohydraulic proportional directional valve 3, adjust the position of spool 32 by control electromagnet 31, oil circuit is communicated with, pressure oil enters in the cylinder body, promote piston to respective direction, handle the main valve plug position that main valve plug 11 moves to corresponding new main valve opening signal, disconnect electromagnet power supply then, spool 32 is returned to the equilibrium position, advance, the oil road sealing, the pressure oil that is enclosed in the cylinder body makes piston be stabilized in this position.Thereby realize the function of control main valve plug position arbitrarily.
Claims (4)
1. steam turbine steam flow control valve, comprise main valve body (1), on the main valve plug (11) of main valve body (1) inside push rod (12) is arranged, it is characterized in that: main valve body (1) one side stationary housing (2), cylinder body (2) and electrohydraulic proportional directional valve (3) are by advancing, oil road (4) links to each other, advance, oil road (4) is in piston (5) both sides, piston (5) links to each other with the push rod (12) of main valve plug (11), be connected with linear displacement transducer (6) on push rod (12), the output terminal of linear displacement transducer (6) links to each other with the electromagnet (31) of electrohydraulic proportional directional valve by control circuit.
2. steam turbine steam flow control valve according to claim 1 is characterized in that: the piston rod of described piston (51) is connected with push rod (12).
3. steam turbine steam flow control valve according to claim 1 is characterized in that: described linear displacement transducer (6) is connected with piston rod (51) or push rod (12) by connecting rod (61).
4. steam turbine steam flow control valve according to claim 1 is characterized in that: described linear displacement transducer 6 is made up of linear displacement transducer motion bar (62) and displacement transducer ectosome (63); Linear displacement transducer motion bar (62) is formed by connecting by about two sections, be inserted in the ectosome (63) in section be soft magnetic material, outer section is a diamagnetic material; Be placed with primary coils and secondary winding vertically in the shell of ectosome (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060424 CN2898469Y (en) | 2005-06-28 | 2005-06-28 | Steam flow adjusting valve for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060424 CN2898469Y (en) | 2005-06-28 | 2005-06-28 | Steam flow adjusting valve for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898469Y true CN2898469Y (en) | 2007-05-09 |
Family
ID=38073802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520060424 Expired - Lifetime CN2898469Y (en) | 2005-06-28 | 2005-06-28 | Steam flow adjusting valve for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2898469Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776099B (en) * | 2009-12-31 | 2013-09-11 | 佛山市禅城区永恒液压机械有限公司 | High integration servo oil cylinder |
| CN103797287A (en) * | 2011-06-17 | 2014-05-14 | Ksb股份公司 | Fittings for Switching Fluid Paths |
| CN114558853A (en) * | 2022-03-04 | 2022-05-31 | 广州广重企业集团有限公司 | Steam pipeline blowing method |
-
2005
- 2005-06-28 CN CN 200520060424 patent/CN2898469Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776099B (en) * | 2009-12-31 | 2013-09-11 | 佛山市禅城区永恒液压机械有限公司 | High integration servo oil cylinder |
| CN103797287A (en) * | 2011-06-17 | 2014-05-14 | Ksb股份公司 | Fittings for Switching Fluid Paths |
| CN114558853A (en) * | 2022-03-04 | 2022-05-31 | 广州广重企业集团有限公司 | Steam pipeline blowing method |
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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 |
Expiration termination date: 20150628 Granted publication date: 20070509 |
|
| EXPY | Termination of patent right or utility model |