CN105351014A - Novel disc type unloading valve of EH oil system oil engine of steam turbine - Google Patents
Novel disc type unloading valve of EH oil system oil engine of steam turbine Download PDFInfo
- Publication number
- CN105351014A CN105351014A CN201510915347.3A CN201510915347A CN105351014A CN 105351014 A CN105351014 A CN 105351014A CN 201510915347 A CN201510915347 A CN 201510915347A CN 105351014 A CN105351014 A CN 105351014A
- Authority
- CN
- China
- Prior art keywords
- oil
- feather valve
- load plate
- steam turbine
- oil engine
- 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.)
- Pending
Links
- 239000003921 oil Substances 0.000 title claims description 81
- 239000010729 system oil Substances 0.000 title claims description 15
- 210000003746 feather Anatomy 0.000 claims description 45
- 239000012530 fluid Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
- F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
- F01D17/26—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical fluid, e.g. hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention discloses a structure-improved type novel unloading valve which is designed by improving the structure of a conventional disc type unloading valve, and can be used for various oil engine sets. The disc type unloading valve is mainly applied to a steam turbine set with power more than 350MW, and is mainly used for quickly unloading oil, so that the oil engine realizes quick closedown, and an air valve is closed to protect the set. The novel disc type unloading valve mainly consists of an unloading disc, a spring, a guide pin and a housing. According to the novel disc type unloading valve, while the structural design is simplified, the function of the conventional disc type unloading valve still can be realized and key technical parameters are kept unchanged. The novel disc type unloading valve effectively solves the defects of a complex structure, inconvenience in processing and the like of the conventional disc type unloading valve, and has very high universality.
Description
Technical field
The present invention relates to the architecture advances of disc type feather valve, improved disc type feather valve both simplified the structure, again content with funtion demand.
Background technique
Disc type feather valve is a vitals of Large Steam Turbine Sets (more than 350MW) EH oil system oil engine, has vital effect to the quick closedown of oil engine.Oil engine quick closedown mainly refers to, oil engine is by feather valve quick draining within the extremely short time, and piston rod resets, and oil engine is closed, and steam off valve then, avoids danger situation to occur, and therefore quick closing's time is a critical technical parameter of oil engine.
At present in oil engine technology, main employing two kinds of products realize the quick draining of oil engine, and then realize quick closedown function, disc type feather valve and cartridge valve respectively, in view of disc type feather valve relative to cartridge valve on quick draining, have the response time short, dredge oil amount is large, the advantages such as failure rate is low, generally adopt disc type feather valve in Large-scale machine set.
There is the defect such as complex structure, processing inconvenience in a kind of ventional disc feather valve for steam turbine EH oil system oil engine of our factory autonomous Design, in order to overcome above-mentioned deficiency, improving on this basis, proposing a kind of Novel disc-type feather valve.
Summary of the invention
The present invention proposes a kind of steam turbine EH oil system oil engine Novel disc-type feather valve.The object of the invention is, under the prerequisite ensureing appellative function and technical parameter, to improve original structure, reduce the difficulty of processing of product, reduce overall dimensions, to realize reducing costs.
The technical solution adopted in the present invention is:
A kind of steam turbine EH oil system oil engine Novel disc-type feather valve is primarily of unloading load plate, spring, pilot pin, housing composition.In structural design, cancel the transition part between oil cylinder and feather valve motor element, oil cylinder directly contacts with feather valve motor element, is ensureing the basis that feather valve critical technical parameter is constant decreases amount of parts, and can realize oil engine quick closing valve function.
Working principle is constant, and during normal work, fluid is first full of feather valve, and sets up safe oil pressure, and Safety oil pressure is more than or equal to working pressure, and oil engine normally works.When oil engine needs quick closing valve, safe oil pressure loses, and carries out draining, completes oil engine quick closedown.
Due to structural design cancelling oil-guiding block, accomplish compact structure, small and exquisite.Have easy to process, advantage with low cost.
Accompanying drawing explanation
Fig. 1 is former feather valve structural drawing
Fig. 2 is modified model feather valve structural drawing
Embodiment
Below embodiments of the invention are elaborated: the present embodiment is implemented under premised on technical solution of the present invention, give detailed mode of execution and concrete operating process.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Below in conjunction with accompanying drawing, to embodiment's further instruction.
As shown in Figure 1, the former disc type feather valve mentioned of the present embodiment primarily of oil-guiding block 2, unload load plate 3, housing 4, pilot pin 5, spring 6 form, feather valve is directly connected with cylinder bottom 1 (oil cylinder part), be the vitals being applied to Large Steam Turbine Sets (more than 350MW) EH oil system oil engine, have vital effect to the quick closedown of unit.
As shown in Figure 1, when normally working, Safety oil is imported housing 4 and unloads in the cavity between load plate 3 by oil-guiding block 2, and set up safe oil pressure, fluid is first full of feather valve, and sets up safe oil pressure, and make to unload load plate 3 and fit tightly with oil-guiding block 2, oil engine normally works.When oil engine needs quick closing valve, safe oil pressure loses, and under the effect of working pressure oil, unload load plate 2 and move vertically and to be separated with oil-guiding block 3, pressure oil, by looping pit, flows through oil-guiding block and carries out draining, complete oil engine quick closedown.
In sum, oil-guiding block 2 mainly plays the transitional function of oil cylinder and feather valve, therefore, this product cancels part oil-guiding block 2 from structural design, make cylinder bottom 1 and unload load plate 3 and directly contact, for ensureing that product normally works, demand fulfillment working pressure is long-pending than constant with Safety oil pressure application surface.Therefore, this product is not changed the structural design of unloading load plate and oil cylinder surface of contact, ensures that its structure is constant, therefore ensure that sectional area S1 and S2 remains unchanged.Because sectional area S3 is constant, also ensure that the quick closing valve performance of product.
Therefore, as shown in Figure 2, a kind of steam turbine EH oil system oil engine Novel disc-type feather valve of providing of the present embodiment primarily of unloading load plate 1, spring 2, pilot pin 3, housing 4 form.Wherein, unload load plate 1 and open as main motion parts, time closed (fitting with cylinder bottom), safe oil pressure is set up, and oil engine normally works; When opening (being separated with cylinder bottom), draining, oil engine quick closing valve.Pilot pin 3 realizes the leading role to unloading load plate 1 motion.Spring 2 can make to unload load plate 1 by spring force and reset.
During normal work, fluid is first full of feather valve, and sets up safe oil pressure, and Safety oil pressure is more than or equal to working pressure, and unload load plate 1 and press to oil cylinder, oil engine normally works.When oil engine needs quick closing valve, safe oil pressure loses, and unloads load plate 1 pine from oil cylinder, carries out draining, complete oil engine quick closedown.Ensureing the basis that feather valve critical technical parameter is constant decreases amount of parts, and can ensure that feather valve critical technical parameter is constant, realizing oil engine quick closing valve function.
As shown in Figure 2, in structural design, housing 4 makes feather valve entirety be connected with oil cylinder by screw; Be threaded connection between pilot pin 3 and housing 4; Unload load plate 1 to be assembled by Spielpassung with pilot pin 3; Cancel transition part---the oil-guiding block between oil cylinder and feather valve motor element, feather valve is overall to be threaded connection with oil cylinder.
As shown in Figure 2, load plate 1 and pilot pin 3 is unloaded under meeting and unloading the prerequisite of load plate 1 stroke, reduction axial dimension.
As shown in Figure 2, the design of spring 2 will ensure that can make to unload load plate 1 by spring force resets.
As shown in Figure 2, the monnolithic case size of housing 4 and wall thickness, by calculating, checking, reduce monnolithic case size and wall thickness under meeting the prerequisite of requirement of strength.
Novel disc-type feather valve in the present embodiment perfectly can substitute original product, is applied to corresponding oil engine, highly versatile.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1. a steam turbine EH oil system oil engine Novel disc-type feather valve is characterized in that, primarily of unloading load plate (1), spring (2), pilot pin (3), housing (4) composition.
2. a kind of steam turbine EH oil system oil engine Novel disc-type feather valve according to claim 1 is characterized in that, during normal work, fluid is first full of feather valve, and set up safe oil pressure, Safety oil pressure is more than or equal to working pressure, unload load plate (1) and press to oil cylinder, oil engine normally works; When oil engine needs quick closing valve, safe oil pressure loses, and unloads load plate (1) loose from oil cylinder, carries out draining, complete oil engine quick closedown.
3. a kind of steam turbine EH oil system oil engine Novel disc-type feather valve according to claim 1 is characterized in that, unloading load plate (1) opens as main motion parts, time closed (fitting with cylinder bottom), safe oil pressure is set up, oil engine normally works, when opening (being separated with cylinder bottom), draining, oil engine quick closing valve; Spring (2) can make to unload load plate (1) by spring force and reset; Pilot pin (3) realizes the leading role to unloading load plate (1) and moving; Housing (4) plays a part sealing and protection.
4. a kind of steam turbine EH oil system oil engine Novel disc-type feather valve according to claim 1 is characterized in that, in structural design, housing (4) makes feather valve entirety be connected with oil cylinder by screw; Be threaded connection between pilot pin (3) and housing (4); Unload load plate (1) to be assembled by Spielpassung with pilot pin (3); Cancel transition part---the oil-guiding block between oil cylinder and feather valve motor element, feather valve is overall to be threaded connection with oil cylinder.
5. a kind of steam turbine EH oil system oil engine Novel disc-type feather valve according to claim 4 is characterized in that, transition part---the oil-guiding block between oil cylinder and feather valve motor element cancelled by Novel disc-type feather valve in structural design, reduce number of spare parts, accomplish compact structure, easy to process, with low cost, and ensure that feather valve critical technical parameter is constant, and oil engine quick closing valve function can be realized.
6. a kind of steam turbine EH oil system oil engine Novel disc-type feather valve according to claim 1 is characterized in that, ensure that working pressure and Safety oil pressure application surface are long-pending than constant, to cylinder bottom and the design of unloading load plate surface of contact, meet interface size requirement; Unload load plate interface size to mate, and ensure that oil return looping pit meets oil extraction requirement, feather valve interface size should match with it; Cylinder bottom looping pit size is identical with S3, both completely interface requirement, the again requirement of guarantee oil drain quantity.
7. a kind of steam turbine EH oil system oil engine Novel disc-type feather valve according to claim 1 is characterized in that, unloads load plate (1) and pilot pin (3) under meeting and unloading the prerequisite of load plate (1) stroke, reduces axial dimension; The design of spring (2) will ensure that can make to unload load plate (1) by spring force resets; The wall thickness of housing (4) and overall physical dimensions will meet requirement of strength by calculating, checking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915347.3A CN105351014A (en) | 2015-12-11 | 2015-12-11 | Novel disc type unloading valve of EH oil system oil engine of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915347.3A CN105351014A (en) | 2015-12-11 | 2015-12-11 | Novel disc type unloading valve of EH oil system oil engine of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351014A true CN105351014A (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510915347.3A Pending CN105351014A (en) | 2015-12-11 | 2015-12-11 | Novel disc type unloading valve of EH oil system oil engine of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351014A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024060A (en) * | 1998-06-05 | 2000-02-15 | Buehrle, Ii; Harry W. | Internal combustion engine valve operating mechanism |
| CN1877086A (en) * | 2006-07-06 | 2006-12-13 | 东方汽轮机厂 | Servomotor oil circuit regulating valve assembly of steam turbine regulating system |
| CN101769276A (en) * | 2008-12-30 | 2010-07-07 | 上海航天液压控制系统有限公司 | Quick unloading device for hydraulic servomotor |
| CN202023784U (en) * | 2011-03-25 | 2011-11-02 | 三河沃达液压控制系统有限公司 | Hydraulic servomotor and unloading valve thereof |
| CN205744010U (en) * | 2015-12-11 | 2016-11-30 | 上海新力机器厂 | A kind of steam turbine EH oil system servomotor Novel disc-type feather valve |
-
2015
- 2015-12-11 CN CN201510915347.3A patent/CN105351014A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6024060A (en) * | 1998-06-05 | 2000-02-15 | Buehrle, Ii; Harry W. | Internal combustion engine valve operating mechanism |
| CN1877086A (en) * | 2006-07-06 | 2006-12-13 | 东方汽轮机厂 | Servomotor oil circuit regulating valve assembly of steam turbine regulating system |
| CN101769276A (en) * | 2008-12-30 | 2010-07-07 | 上海航天液压控制系统有限公司 | Quick unloading device for hydraulic servomotor |
| CN202023784U (en) * | 2011-03-25 | 2011-11-02 | 三河沃达液压控制系统有限公司 | Hydraulic servomotor and unloading valve thereof |
| CN205744010U (en) * | 2015-12-11 | 2016-11-30 | 上海新力机器厂 | A kind of steam turbine EH oil system servomotor Novel disc-type feather valve |
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Effective date of abandoning: 20240419 |