CN102996852A - Hydraulic self-operated three-way valve - Google Patents
Hydraulic self-operated three-way valve Download PDFInfo
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- CN102996852A CN102996852A CN2012102936820A CN201210293682A CN102996852A CN 102996852 A CN102996852 A CN 102996852A CN 2012102936820 A CN2012102936820 A CN 2012102936820A CN 201210293682 A CN201210293682 A CN 201210293682A CN 102996852 A CN102996852 A CN 102996852A
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Abstract
The invention relates to a three-way valve, in particular to a hydraulic self-operated three-way valve which belongs to the field of valves; the design of an overall structure of a hydraulic high-pressure inlet and outlet three-way valve is adopted; the action force of the pressure of a main pipeline medium serves as the driving force of the action of the valve through the structural design of a built-in piston cylinder; the action requirements of the valve can be met without adding other auxiliary driving devices, a problem that an external high-power driving device is needed is solved, and the overall valve is simplified. The valve body of the valve is in the design of an overall forged structure, so that the phenomenon that a forge welding structure has welding stress defects is avoided, and a 15NiCuMoNb5-6-4(WB36) material is adopted, so that the overall weight of the valve can be reduced by more than one third.
Description
Technical field
The present technique invention relates to a kind of three-way valve, specifically relates to a kind of self-operated three-way valve that surges, and it belongs to valve field.
Background technique
Along with development and the growth of science and technology, the sustainable growth of various countries' economic strength, thermal power generation be towards more high-power, more extensive future development.Particularly popularizing and application of super (super-) critical fired power generating unit technology impels China's thermoelectricity technology must rise to the level of more increasing.Become the key factor of restriction China fired power generating unit development for the research and development of super (super-) critical fired power generating unit critical valves.The control difficulty such as the high-temperatures such as thermoelectricity, high pound level, high-power, heavy caliber are larger, the difficulty that the fired power generating unit height adds crucial control valve design in main road, the bypass-switching contr pipe-line system is larger, and need extraneous high-power or large-scale driving mechanism to operate, can't satisfy again the requirement of main road, bypass changeover≤5s simultaneously.At present fired power generating unit has run into to higher temperature, higher pound level, more high-power, the bottleneck problem of heavy caliber development more, is imperative thereby invent for the design that the larger height of control difficulty such as the high-temperatures such as thermoelectricity, high pound level, high-power, heavy caliber add a kind of control valve in main road, the bypass-switching contr pipeline.
Summary of the invention
Problem in view of the existing procucts existence, the objective of the invention is to provide a kind of pipeline medium that utilizes itself as power source, by the built-in type hydraulic cylinder structural design, at the self-operated three-way valve that surges of the rapid switching motion operation that need not to realize in the situation of external power source valve.
To achieve these goals, the technical solution adopted in the present invention is the self-operated three-way valve that surges, it comprises handle, valve rod, upper valve rod, valve body and flap, it is characterized in that: it also comprises piston upper chamber, the piston cavity of resorption, piston upper chamber access and cavity of resorption exit passageway, handle is connected with upper valve rod, upper valve rod is fixed in the middle of the support, the upper valve rod both sides are provided with pipe box, support is provided with position limit pin, position limit pin is connected with chain, chain is bolted on support, the support of chain lower end is provided with limit switch, valve rod is connected with pipe box, upper valve rod and valve rod are between pipe box, pipe box, upper valve rod and valve rod form hollow cavity, valve rod moves up and down in hollow cavity, pipe box is provided with through hole, valve rod is provided with through hole near an end top of upper valve rod, through hole on the valve rod is identical with hole size on the pipe box, indicator collet is fixed on the valve rod of through hole lower end by screw and key, and pass valve rod and be connected with limit switch with support, the valve rod both sides of indicator collet lower end are provided with hold-down grid successively, filler pressing sleeve, filler, Packing seat and axle sleeve, the support lower end is connected with gland with valve body, gland is bolted between valve body and Stuffing box, be provided with pendant collet between valve body and the Stuffing box, spacer and seal ring, Stuffing box is connected with upper valve base, Stuffing box and upper valve base form piston cavity, valve rod passes piston cavity, valve rod is positioned at the piston cavity part and is provided with boss, be provided with "O"-ring between boss and the upper valve base, boss is divided into piston cavity of resorption and piston cavity of resorption with piston cavity, piston upper chamber is connected with the piston upper chamber access, the piston cavity of resorption is connected with the cavity of resorption exit passageway, piston cavity of resorption access is connected with connecting tube, connecting tube is connected with discharge connection, discharge connection passes Stuffing box and valve body, be provided with "O"-ring between upper valve base and the valve body, back-up ring and " C " type circle, valve rod passes under the upper valve base upper end and reaches in the piston cylinder cavity, the valve rod lower end is provided with disc gland and divided ring, disc gland is fixed as with flap, flap, valve body is fixed as with lower valve base and upper valve base, and valve body is provided with 3 valve ports.
Described valve body adopts solid forging, and its material adopts 15NiCuMoNb5-6-4.
The circumferential through hole that is provided with of described piston cavity of resorption exit passageway.
The sealing surface weld deposit Stellite cemented carbide of described lower valve base and flap.
Described valve rod end face adopts ball head structure shape.
Two pass xenogenesis sealing configuration is adopted in described lower valve base and upper valve base axial seal
Described valve body lumen adopts self-pressure-sealed structure.
Working principle of the present invention:
Valve partly opens and closes by the valve stem piston cylinder, piston upper chamber and piston cavity of resorption all communicate with valve cavity and pipeline medium, the cavity of resorption exit passageway communicates with discharge connection, when the outlet connection place seals, piston upper chamber equates with piston cavity of resorption medium pressure, valve rod integral body is subjected to the medium active force of valve rod sectional area size to promote automatically to move upward, until sealing surface contacts with the upper valve base sealing surface on the flap, and play seal action, medium in the pilot line can only add the entrance three-way valve by the height that surges and add the outflow of outlet three-way valve main road with the height that surges, and can not flow out from bypass.When the outlet connection place is emptying, piston upper chamber and piston cavity of resorption medium pressure are unequal, there is pressure difference, medium is large to the active force below the active force comparison piston above the piston, promote valve rod integral body and automatically move downward, until the flap lower sealing surface contacts with a sealing surface, and play seal action, medium in the pilot line can only add the entrance three-way valve by the height that surges and add outlet three-way valve bypass outflow with the height that surges, and can not flow out from main road.
The invention has the advantages that:
1. the height that surges adds entrance, the integrally-built design of outlet three-way valve, by the built-in piston cylinder structural design, utilize the active force of main line pressure medium own as the driving force of valve event, do not need to increase the action request that other auxiliary drive just can be realized valve, having solved needs the problem of extraneous high-power driving device, and the valve complete machine is simplified.
2. valve adopts the solid forging structural design, has avoided the smithwelding structure to have the phenomenon of welding stress defective, adopts 15NiCuMoNb5-6-4(WB36) material makes valve integral body can alleviate weight more than 1/3.
3. main road and the computational analysis of bypass conduit actual internal area, main road and the design of bypass caliber difference, the downstream loine pressure is without too large variation behind assurance main road, the bypass changeover.
4. adopt the design of circumference uniform distribution porous type shunt structure, guarantee the pilot line traffic requirement, structure is compacter, and valve body lumen size is reduced as far as possible, has reduced on the whole valve monnolithic case size, reduces the gross weight of valve.
5. variable cross section stem structure design, flap has been protected the sealability of sealing surface, the sealing working life of having improved valve greatly to the impact force of valve sealing face when slowing down valve closing and putting in place.
6. body, seat unit-welded structural design have reduced the difficulty that the valve body built-up welding is processed, and are beneficial to processing, the grinding of valve sealing face, guarantee the high performance requirements of sealability.
7. valve seat, valve clack sealing surface built-up welding Stellite cemented carbide improve resistance to erosion, the corrosion resistance of sealing surface, guarantee the sealing effect of sealing surface, have prolonged the working life of sealing surface.
8. the valve rod end face adopts the ball head structure form design, and flap can be swung flexibly, increases the Percent of contact area of lobe, seat sealing surface, improves sealability.
9. two pass xenogenesis sealing principle structural design is adopted in the valve seat axial seal of living, and guarantees the solid property of sealing sealing, and the requirement of high temperature lower seal performance.With " C " type circle sealing configuration of metal stiffening ring, sealability is more reliable when guaranteeing high temperature, high pressure.
10. upper valve base and the Stuffing box formula structure that is integral with bolts can integral disassembly, assembly, is convenient to the maintenance assembling, and is convenient to processing and grinding to the upper valve base sealing surface.
11. the valve body lumen adopts self-pressure-sealed structural design, assembly manipulation is convenient, and can reach the requirement of high pressure sealability, can guarantee the reliability that seals with the flexible sealing ring of metallic cover, guaranteed again the integrity of sealing structure of rings, be convenient to assembling and dismounting, can not cause the seal ring fragmentation to occur and cause the phenomenon that has disintegrating slag in the pipeline.
12. manual manipulation mode pin connection structure and safety protective cover protected-type are utilized chain to add tapered end adversary wheel after valve puts in place and are fixed, and prevent misoperation, guarantee that phenomenon can not appear switching in pipeline when maintenance, have guaranteed the Security of operation.
13. with the design of the position indicator of position indicator collet, can realize on-the-spot directly perceived demonstration the to the valve switch position, and support is provided with the switching position that position limit switch can accurately show valve, can realizes the monitoring to the valve switch state whenever and wherever possible.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the piston cavity schematic representation;
Among the figure: 1, valve body, 2, lower valve base, 3, flap, 4, valve rod, 5, divided ring, 6, disc gland, 7, upper valve base, 8, " C " type circle, 9, "O"-ring, 10, back-up ring, 11, hold-down grid, 12, filler pressing sleeve, 13, filler, 14, Packing seat, 15, discharge connection, 16, Stuffing box, 17, seal ring, 18, spacer, 19, pendant collet, 20, gland, 21, support, 22, axle sleeve, 23, screw, 24, indicator collet, 25, limit switch, 26, chain, 27, key, 28, position limit pin, 29, handwheel, 30, upper valve rod, 31, pipe box, 32, connecting tube, 33, piston upper chamber, 34, the piston cavity of resorption, 35, boss, 36, the piston upper chamber access, 37, piston cavity of resorption exit passageway.
Embodiment
In order further to understand this self-operated three-way valve that surges, accompanying drawings is as follows.
It comprises handle 29, valve rod 4, upper valve rod 30, valve body 1 and flap 3, it is characterized in that: it also comprises piston upper chamber 33, piston cavity of resorption 34, piston upper chamber access 36 and piston cavity of resorption exit passageway 37, handle 29 is connected with upper valve rod 30, upper valve rod 30 is fixed in the middle of the support 21, upper valve rod 30 both sides are provided with pipe box 31, support 21 is provided with position limit pin 28, position limit pin 28 is connected with chain 26, chain 26 is bolted on support 21, the support 21 of chain 26 lower ends is provided with limit switch 25, valve rod 4 is connected with pipe box 31, upper valve rod 30 and valve rod 4 are between pipe box 31, pipe box 31, upper valve rod 30 and valve rod 4 form hollow cavity, valve rod 4 moves up and down in hollow cavity, pipe box 31 is provided with through hole, valve rod 4 is provided with through hole near an end top of upper valve rod 30, through hole on the valve rod 4 is identical with hole size on the pipe box 31, indicator collet 24 is fixed on the valve rod 4 of through hole lower end by screw 23 and key 27, and pass valve rod 4 and be connected with limit switch 25 with support 21, valve rod 4 both sides of indicator collet 24 lower ends are provided with hold-down grid 11 successively, filler pressing sleeve 12, filler 13, Packing seat 14 and axle sleeve 22, support 21 lower ends are connected with gland 20 with valve body 1, gland 20 is bolted between valve body 1 and Stuffing box 16, be provided with pendant collet 19 between valve body 1 and the Stuffing box 16, spacer 18 and seal ring 17, Stuffing box 16 is connected with upper valve base 7, Stuffing box 16 forms piston cavity with upper valve base 7, valve rod 4 passes piston cavity, valve rod 4 is positioned at the piston cavity part and is provided with boss 35, be provided with "O"-ring 9 between boss 35 and the upper valve base 7, boss 35 is divided into piston cavity of resorption 33 and piston cavity of resorption 34 with piston cavity 32, piston upper chamber 33 is connected with piston upper chamber access 36, piston cavity of resorption 34 is connected with cavity of resorption exit passageway 37, piston cavity of resorption access 37 is connected with connecting tube 32, connecting tube 32 is connected with discharge connection 15, discharge connection 15 passes Stuffing box 16 and valve body 1, be provided with "O"-ring 9 between upper valve base 7 and the valve body 1, back-up ring 10 and " C " type circle 8, valve rod 4 passes under upper valve base 7 upper ends and reaches in the piston cylinder cavity, valve rod 4 lower ends are provided with disc gland 6 and lower divided ring 5, disc gland 6 is fixed as with flap 3, flap 3, valve body 1 is fixed as with lower valve base 2 and upper valve base 7, and valve body 1 is provided with 3 valve ports.
Claims (7)
1. self-operated three-way valve surges, it comprises handle, valve rod, upper valve rod, valve body and flap, it is characterized in that: it also comprises piston upper chamber, the piston cavity of resorption, piston upper chamber access and cavity of resorption exit passageway, handle is connected with upper valve rod, upper valve rod is fixed in the middle of the support, the upper valve rod both sides are provided with pipe box, support is provided with position limit pin, position limit pin is connected with chain, chain is bolted on support, the support of chain lower end is provided with limit switch, valve rod is connected with pipe box, upper valve rod and valve rod are between pipe box, pipe box, upper valve rod and valve rod form hollow cavity, valve rod moves up and down in hollow cavity, pipe box is provided with through hole, valve rod is provided with through hole near an end top of upper valve rod, through hole on the valve rod is identical with hole size on the pipe box, indicator collet is fixed on the valve rod of through hole lower end by screw and key, and pass valve rod and be connected with limit switch with support, the valve rod both sides of indicator collet lower end are provided with hold-down grid successively, filler pressing sleeve, filler, Packing seat and axle sleeve, the support lower end is connected with gland with valve body, gland is bolted between valve body and Stuffing box, be provided with pendant collet between valve body and the Stuffing box, spacer and seal ring, Stuffing box is connected with upper valve base, Stuffing box and upper valve base form piston cavity, valve rod passes piston cavity, valve rod is positioned at the piston cavity part and is provided with boss, be provided with "O"-ring between boss and the upper valve base, boss is divided into piston cavity of resorption and piston cavity of resorption with piston cavity, piston upper chamber is connected with the piston upper chamber access, the piston cavity of resorption is connected with the cavity of resorption exit passageway, piston cavity of resorption access is connected with connecting tube, connecting tube is connected with discharge connection, discharge connection passes Stuffing box and valve body, be provided with "O"-ring between upper valve base and the valve body, back-up ring and " C " type circle, valve rod passes under the upper valve base upper end and reaches in the piston cylinder cavity, the valve rod lower end is provided with disc gland and divided ring, disc gland is fixed as with flap, flap, valve body is fixed as with lower valve base and upper valve base, and valve body is provided with 3 valve ports.
2. the self-operated three-way valve that surges according to claim 1 is characterized in that: described valve body employing solid forging, its material employing 15NiCuMoNb5-6-4.
3. the self-operated three-way valve that surges according to claim 1 is characterized in that: the circumferential through hole that is provided with of described piston cavity of resorption exit passageway.
4. the self-operated three-way valve that surges according to claim 1 is characterized in that: the sealing surface weld deposit Stellite cemented carbide of described lower valve base and flap.
5. the self-operated three-way valve that surges according to claim 1 is characterized in that: described valve rod end face employing ball head structure shape.
6. the self-operated three-way valve that surges according to claim 1 is characterized in that: described lower valve base and upper valve base axial seal employing two pass xenogenesis sealing configuration.
7. the self-operated three-way valve that surges according to claim 1, it is characterized in that: described valve body lumen adopts self-pressure-sealed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293682.0A CN102996852B (en) | 2012-08-17 | 2012-08-17 | Surge self-operated three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293682.0A CN102996852B (en) | 2012-08-17 | 2012-08-17 | Surge self-operated three-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996852A true CN102996852A (en) | 2013-03-27 |
| CN102996852B CN102996852B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210293682.0A Active CN102996852B (en) | 2012-08-17 | 2012-08-17 | Surge self-operated three-way valve |
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| CN (1) | CN102996852B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821965A (en) * | 2014-01-25 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | High-pressure heater three-way valve driven by inner high-pressure piston |
| CN105202223A (en) * | 2015-09-17 | 2015-12-30 | 哈电集团哈尔滨电站阀门有限公司 | Hydraulic high-pressure heater three-way valve |
| CN106224641A (en) * | 2016-09-13 | 2016-12-14 | 航天长征化学工程股份有限公司 | Valve spindle axial positioning support |
| CN110056673A (en) * | 2019-05-23 | 2019-07-26 | 成都富临精工电子电器科技有限公司 | A kind of piston type threeway valve arrangement |
| CN112524325A (en) * | 2020-11-30 | 2021-03-19 | 沧州润久智能仪表有限公司 | Emergency valve |
| CN112610742A (en) * | 2020-12-02 | 2021-04-06 | 山东齐鲁电机制造有限公司 | High-pressure main steam valve of steam turbine |
| CN113404890A (en) * | 2021-07-06 | 2021-09-17 | 四川泰诺流体控制技术有限公司 | Hydraulic switch mechanism and high-pressure three-way valve |
| CN115325194A (en) * | 2022-10-17 | 2022-11-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Energy-saving valve easy and convenient to disassemble, assemble and maintain |
| CN110056673B (en) * | 2019-05-23 | 2024-04-26 | 四川芯智热控技术有限公司 | Piston type three-way valve structure |
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Patent Citations (5)
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| JPH0634068A (en) * | 1992-07-10 | 1994-02-08 | Hironobu Yamashita | Valve |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821965A (en) * | 2014-01-25 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | High-pressure heater three-way valve driven by inner high-pressure piston |
| CN105202223A (en) * | 2015-09-17 | 2015-12-30 | 哈电集团哈尔滨电站阀门有限公司 | Hydraulic high-pressure heater three-way valve |
| CN106224641A (en) * | 2016-09-13 | 2016-12-14 | 航天长征化学工程股份有限公司 | Valve spindle axial positioning support |
| CN106224641B (en) * | 2016-09-13 | 2024-02-20 | 航天长征化学工程股份有限公司 | Valve spindle axial positioning bracket |
| CN110056673A (en) * | 2019-05-23 | 2019-07-26 | 成都富临精工电子电器科技有限公司 | A kind of piston type threeway valve arrangement |
| CN110056673B (en) * | 2019-05-23 | 2024-04-26 | 四川芯智热控技术有限公司 | Piston type three-way valve structure |
| CN112524325A (en) * | 2020-11-30 | 2021-03-19 | 沧州润久智能仪表有限公司 | Emergency valve |
| CN112610742A (en) * | 2020-12-02 | 2021-04-06 | 山东齐鲁电机制造有限公司 | High-pressure main steam valve of steam turbine |
| CN113404890A (en) * | 2021-07-06 | 2021-09-17 | 四川泰诺流体控制技术有限公司 | Hydraulic switch mechanism and high-pressure three-way valve |
| CN115325194A (en) * | 2022-10-17 | 2022-11-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Energy-saving valve easy and convenient to disassemble, assemble and maintain |
| CN115325194B (en) * | 2022-10-17 | 2023-02-03 | 中国空气动力研究与发展中心高速空气动力研究所 | Energy-saving valve easy and convenient to disassemble, assemble and maintain |
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| CN102996852B (en) | 2016-03-23 |
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Denomination of invention: Hydraulic self operated three-way valve Effective date of registration: 20230927 Granted publication date: 20160323 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2023980059639 |
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