CN208348600U - Pilot-operated type adjusting valve - Google Patents
Pilot-operated type adjusting valve Download PDFInfo
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- CN208348600U CN208348600U CN201820814797.2U CN201820814797U CN208348600U CN 208348600 U CN208348600 U CN 208348600U CN 201820814797 U CN201820814797 U CN 201820814797U CN 208348600 U CN208348600 U CN 208348600U
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- valve
- pilot
- spool
- operated type
- core
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Abstract
The utility model relates to regulating valve fields, more particularly to a kind of pilot-operated type adjusting valve, the pilot-operated type adjusting valve includes valve rod, valve deck, valve body, valve rod is movably installed on bonnet central, the inflow chamber and outflow chamber separated by S type partition is equipped in valve body, inflow below valve deck is intracavitary equipped with valve cage, valve cage is arranged on the platform among S type partition, a coaxial pilot-operated type core assembly is additionally provided with inside valve cage, pilot-operated type core assembly is connect with valve rod, and moved under the drive of valve rod, connection flows into chamber and outflow chamber.The lower sides of valve cage are equipped with multiple circumferentially distributed throttle orifices; the lower part of core assembly also is provided with multiple circumferentially distributed spool bores; the pilot-operated type adjusting valve of the utility model; the big flow pressure release under high temperature and high pressure condition not only may be implemented; the flow rate of adjustable fluid media (medium) disengaging spool simultaneously; sealing surface is protected, to meet the V grade seal request under special operation condition.
Description
Technical field
The utility model relates to regulating valve fields, and in particular to a kind of pilot-operated type adjusting valve.
Background technique
The energy development of China is rapid, and almost in all industries and processing environment, high temperature and pressure belongs to a kind of pole
Operating condition is held, needs to handle with caution.Although considering a large amount of safety factor in storage container and pressure, valve can bear pressure
Power still must not exceed the specified level of certain equipment.It, can be by relief valve come in process container or pipeline in traditional sense
Pressure.Basic relief valve simple structure, is adjusted to particular value for drain valve closure stress using variable spring-compressed.But due to
The telescopic action of spring can generate different holding forces, therefore this inadequate rigorous and scientific of processing during use.Meanwhile relief valve
Also external limited by its: pressure is higher, then spring is bigger；Spring is bigger, then valve body is bigger.And it is this use relief valve
The mode passively escaped can not be solved the problems, such as fundamentally this.
In the modern industry environment developed rapidly at present, it is badly in need of providing more more options, this just answers pilot-operated type control valve
It transports and gives birth to.Pilot-operated type adjusting valve is small in size with its, compact-sized, sealing effect is good, cutting ability is high, applied widely and use
The features such as service life is long has been more and more widely used in automatic control system.Pilot-operated type adjusting valve works in high temperature and pressure
In operating condition, for common spool when facing higher pressure and temperature, spool generates cavitation erosion, flass in switching process,
This is fatal for valve seal.Old-fashioned pilot valve can not balance front and back pressure difference well, and spool and its component are in work
As when be not sufficiently stable, sealing cutting effect it is undesirable, spool serious wear, thoroughly realize this kind of special operation condition of high temperature and pressure
Adjusting requirement.
Utility model content
To solve the deficiencies in the prior art, the utility model provides a kind of pilot-operated type adjusting valve, can be used for high temperature
Large bore valves under high pressure.
Technical solution provided by the utility model is as follows:
A kind of pilot-operated type adjusting valve, including valve rod, valve deck, valve body, the valve rod through the bonnet central and with it is described
Valve deck is slidably connected, and the valve deck and the valve body are bolted, and the inflow separated by S type partition is equipped in the valve body
Chamber and outflow chamber, the inflow below the valve deck is intracavitary equipped with valve cage, and the valve cage is arranged in flat among the S type partition
On platform, and the opening of the valve cage lower end is connected to as coaxial channel, inside the valve cage with the through-hole among S type partition
It is additionally provided with a coaxial pilot-operated type core assembly, the pilot-operated type core assembly is connect with valve rod, and in the band of the valve rod
Under dynamic, it can be moved up and down in the coaxial channel.
Through the above technical solutions, the pilot-operated type adjusting valve under the action of implementation capacity, passes through valve rod band movable valve plug group
Part pressure release, pressure discharge operations are easy, and pilot-operated type adjusting valve is simple in construction, easy to disassemble and assemble.
Preferably, the pilot-operated type core assembly is bolted by spool gland and spool is constituted, in the spool
With small valve core is equipped in the cavity that surrounds in the spool gland, the small valve core upper end is connect with threaded stem, the small valve
Core lower end and spool, which are formed, to be sealed, and the small valve core lower end and spool are formed with folded spring room, are provided in the folded spring room
Folded spring, the folded spring compression support the small valve core.
Through the above technical solutions, the pilot-operated type core assembly is based on pilot-operated type principle, it is the core component of valve, folds
Spring is in compressive state, support small valve core that not only can be stable, protects sealing surface, returns small valve core and provides reaction force, makes
Small valve core need to only apply lesser implementation capacity when opening, and reduce energy consumption, be easy to use.
Preferably, the balance hole passed through for fluid is equipped in the spool gland and the small valve core.The balance
Hole and spool valve seat constitute fluid passage, and for flowing in and out for fluid media (medium), while the balance hole is arranged in spool pressure
Inside lid and small valve core, space is also saved, the volume of valve is reduced.
Preferably, piston ring is equipped in the annular groove on the outside of the upper end of the spool, the middle part of the spool, which is equipped with, to be used for
The accommodating cavity of small valve core is installed, the lower part of the spool is hollow cylinder-like structure, and the cylinder-like structure center is equipped with
The leader channel being connected to accommodating cavity.
Through the above technical solutions, valve core structure is simple, the structure of spool lower cylindrical protrudes into valve seat center, reduces valve
The side of core is shaken, to reduce the damage to linear sealing face, keeps seal spool more stable.
Preferably, the barrel of the spool lower cylindrical structure is equipped with multiple spool bores, and the spool bore is along cylinder
Wall is in circumferentially distributed.The spool bore plays a part of adjusting fluid media (medium), and fluid media (medium) dispersion passes through multiple spools when pressure release
Hole, spool bore bear the major part of fluid media (medium) pressure, are reduced by the pressure medium after spool bore, so that cavitation erosion is made
Aperture is adjourned to by valve seat, protects sealing surface, improves valve service life, 2~3 times up to ordinary high pressure difference limen of service life.
Preferably, the valve cage is fixedly connected to form by upper bush, sleeve, valve seat.Sleeve is fixed on valve seat, upper bush
It is fixed on sleeve, three components need to only position placement, and spool gland compresses upper bush, and with upper bush to be bolted.Institute
The assembling for stating valve cage is divided into three sections, and assembly method is simple, while convenient for the installation of pilot-operated type core assembly in valve cage.
Preferably, the upper bush and the piston ring form sealing, and deposit between the upper bush and the piston ring
In gap.Upper bush and piston ring form sealing, make fluid media (medium) that can just pass through slowly piston ring and upper bush under stress
Between gap, enter in guide groove, while ensuring in this gap that flow of media ability is less than small valve core and spool lower end is opened
The negotiability of valve openings when opening.
Preferably, the sleeve is equipped with several throttle orifices passed through for fluid.The throttle orifice can make fluid be situated between
Pressure medium reduces when matter enters, and reduces the impact force to the spool, to reduce the unilateral local failure to the valve seat
Effect reduces flow velocity, noise.
Preferably, the valve seat and the spool, which are formed, seals, and the valve seat and the cylindric of the spool lower part are tied
There are gaps between structure.There are gaps between valve seat and spool substructure, it is ensured that spool is in the channel at valve seat center
It is moved up and is moved down, realized closing or pressure release, while can be blocked to avoid the spool by the solid particle in fluid, be convenient for
The dismounting and replacement of trim.
Preferably, be equipped with sealing surface between the spool and the valve seat, the spool and the pilot-operated type small valve core it
Between be equipped with sealing surface, seal form is linear sealing.The sealing surface is spherical surface, is linear sealing.The sealing surface is by original
40 ° of angles are changed to the face R, are converted into linear sealing by original face sealing, in the case where power output is constant, sealing surface reduces, to reach
The effect sealed to V grades.
Preferably, the pilot-operated type small valve core and the spool constitute pilot-operated type structure by folded spring and spool gland.
Folded spring serves when pilot-operated type small valve core pushes to be held out against, and is stablized the sealing of pilot-operated type small valve core, is reduced and vibrate up and down, protect
Sealing surface, while folded spring provides the driving active force that pilot-operated type small valve core rises in pressure release, so that mechanism fast response time.
Preferably, small valve core risen under the drive of valve rod be close to spool gland position, below spool gland this
The inflow chamber, the valve cage, the spool gland, the small valve core, the leader channel, the outflow in section stroke range
Chamber forms fluid passage.Fluid media (medium) realizes small flow pressure release, the medium back of last spool gland top and valve core inside at this time
Pressure reaches pressure balance.
Preferably, small valve core moves up under the drive of valve rod in the position for being close to spool gland, small valve core continuation, pilot-operated type
Core assembly is opened, and the inflow chamber, the valve cage, the leader channel, the outflow chamber form fluid passage.Fluid at this time
Medium forms big flow pressure release.
The utility model is compared with prior art, generated to have the beneficial effect that this pilot-operated type adjusting valve reliable complete
While at balance pressure task, also have the ability for adjusting the flow rate that medium flows into and out, the throttle orifice on sleeve
And the spool bore of spool lower end bears major part (about 60%) of the medium by pressure, cavitation erosion can be acted on by valve seat
Aperture is adjourned to, sealing surface is protected, improves valve service life.Simultaneously can by adjusting the quantity of throttle orifice and spool bore,
Position and diameter, to reach the discharge characteristic of different demands.Due to the working method that pilot-operated type adjusting valve is stable, sealing surface is used
Linear sealing, so that pilot-operated type adjusting valve can guarantee V grades of sealings at high temperature under high pressure.
Detailed description of the invention
Fig. 1 is the general construction schematic diagram of the pilot-operated type adjusting valve of the utility model embodiment.
Fig. 2 is the valve cage structure schematic diagram of the pilot-operated type adjusting valve of the utility model embodiment.
Fig. 3 is that the odd number of the pilot-operated type adjusting valve of the utility model embodiment folds the structural schematic diagram of spring.
Fig. 4 is that the odd number of the pilot-operated type adjusting valve of the utility model embodiment folds the comparative structure schematic diagram of spring.
Fig. 5 is that the plural number of the pilot-operated type adjusting valve of the utility model embodiment folds the structural schematic diagram of spring.
Fig. 6 is that the plural number of the pilot-operated type adjusting valve of the utility model embodiment folds the comparative structure schematic diagram of spring.
In attached drawing 1,2,3,4,5,6, structure list representated by each label is as follows:
1, valve rod, 2, valve deck, 3, valve body, 4, inflow chamber, 5, outflow chamber, 6, valve cage, 601, sleeve, 602, throttle orifice,
603, valve seat, 604, upper bush, 7, valve seat, 8, pilot-operated type core assembly, 801, cylinder-like structure, 802, spool bore, 803, valve
Core gland, 804, spool, 805, small valve core, 806, folded spring chamber, 807, folded spring, 808, annular groove, 809, piston ring, 810, accommodating
Chamber, 811, leader channel, 9, guide sleeve, 10, guide groove, the 11, first balance hole, the 12, second balance hole.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
As depicted in figs. 1 and 2, the pilot-operated type adjusting valve of the utility model embodiment includes valve rod 1, valve deck 2, valve body 3,
Valve rod 1 is slidably connected through 2 center of valve deck and by guide sleeve 9 with the valve deck 2, and valve deck 2 and valve body 3 are bolted,
It is equipped with the inflow chamber 4 and outflow chamber 5 separated by S type partition 301 in valve body 3, is equipped with valve in the inflow chamber 4 immediately below valve deck 2
Cage 6, valve cage 6 are arranged on the platform among S type partition 301, and the opening of 6 lower end of valve cage and the through-hole among S type partition 301
Connection becomes coaxial channel 7, and a coaxial pilot-operated type core assembly 8, pilot-operated type core assembly 8 are additionally provided with inside valve cage 6
It connect, and under the drive of valve rod 1, can be moved up and down in coaxial channel 7 with valve rod 1.8 lower end of pilot-operated type core assembly is set
It is equipped with cylinder-like structure 801, cylinder-like structure 801 is inserted into the coaxial channel 7 among S type partition 301, and cylinder-like structure
801 side walls are provided with multiple spool bores 802.
Wherein, pilot-operated type core assembly 8 is bolted and is constituted by spool gland 803 and spool 804, in spool 804
With small valve core 805 is equipped in the cavity that surrounds in spool gland 803,805 upper end of small valve core is threadedly coupled with valve rod 1, small valve core
805 lower ends and spool 804 form linear sealing, and 805 lower end of small valve core and spool 804 are formed with folded spring room 806, in folded spring room
It is provided with folded spring 807 in 806, folds the compression support small valve core 805 of spring 807.
Specifically, valve cage 6 is fixedly connected to form by upper bush 604, sleeve 601, valve seat 603.
In an embodiment of the utility model, when pilot-operated type adjusting valve is closed, valve rod 1 is under implementation capacity effect
It is pressed downward, so that small valve core 805 and spool 804 are formed and sealed, spool 804 and valve seat 603 are formed and sealed.Fluid media (medium) at this time
Entered in valve cage 6 from chamber 4 is flowed by throttle orifice 602, and is entered by the gap between piston ring 809 and upper bush 604 and led
Into slot 10, fluid media (medium) continuation enters in folded spring room 806 along the first balance hole 11 and the second balance hole 12.As fluid is situated between
Matter constantly pours in, and the back pressure above spool gland 803 increases, and closes small valve core and spool.Wherein spool 804 is by executing
Mechanism power output and medium back pressure are sealed with valve seat 603, and small valve core 805 is by actuator stem force and medium back pressure and valve
Core 804 is sealed, and seal pressure is when closing
Q in formula0--- it must be than pressure, MPa
Q --- it is practical than pressure, MPa
Ko --- executing agency's diaphragm effective output pressure, MPa
Ae --- executing agency's effective diaphragm area, mm2
D --- spool is by pressure effective diameter, mm
Δ P --- close maximum differential pressure, MPa
dn--- valve-seat diameter, mm
bm--- sealing surface of seat effective width, mm
[q] --- spool and valve seat are allowable than pressure, MPa
In this way, when closing pilot-operated type adjusting valve, by the effect of throttle orifice 602, sleeve can be entered with dispersing fluid medium
To the impact force of spool 804 after 601, stablize the sealing of spool 804, and the effect by folding spring 807 vibrates small valve core 805
Reduce, stablizes the sealing of small valve core 805.
In the another embodiment of the utility model, when small valve core 805 moves up in the space below spool gland
When, executing agency's implementation capacity makes valve rod 1 to moving up with the help of folded spring driving force, and fluid media (medium) passes through pilot-operated type small valve core
Gap between 805 and spool 804 enters leader channel 811, constantly has fluid media (medium) through the first balance hole 11, the second balance hole
12 and folded spring room 806 enter leader channel 811, due to leader channel 811 negotiability be much larger than piston ring 809 and upper bush
The negotiability in gap between 604, it is flat that the fluid media (medium) of 804 lower section of top and spool of spool gland 803 slowly forms pressure
Weighing apparatus.
In this way, small valve core 805 takes the lead in completing small flow pressure release, the pressure on pilot-operated type core assembly 8 reduces.
In the another embodiment of the utility model, small valve core 805 rises to highest point in accommodating cavity 810, small
Spool 805 is fitted closely with spool gland 803, is continued light valve lifting stem 1 at this time, can be opened pilot-operated type core assembly 8, at this time greatly
The fluid media (medium) of amount directly enters outflow chamber 5 by spool bore 802, to complete pressure release.
In this way, pilot-operated type core assembly 8 completes big flow pressure release, flows into chamber 4 and outflow chamber 5 passes through the section on sleeve 601
Discharge orifice 602 is directly connected to the spool bore 802 on spool 804, and throttle orifice 602 and spool bore 802 can be used to adjust fluid Jie
Matter flow rate, dispersing fluid medium enter the impact force of outflow chamber 5, reduce fluid media (medium) to the list of spool 804 and valve seat 603
Side local failure effect, protects sealing surface.
In one embodiment of the utility model, folded spring 807, which divides, folds spring and the folded spring of plural number for odd number, and folded spring 807 need to be pressed
Correct method is mounted in folded spring room 806.Fig. 3 and Fig. 5 is respectively that odd number folds spring and the folded spring structure schematic diagram of plural number, either
The folded spring of odd number or the folded spring of plural number, folded spring 807 will make folded spring area big that one end when installing upward, make folded spring 807 to the greatest extent may be used
The contact small valve core 805 of energy large area, to guarantee the firm support small valve core 805 of folded spring 807.Folded spring 807 can be so set to exist
The good fluctuation for resisting fluid medium pressure when switching of small valve core 805；Fig. 4 and Fig. 6 illustrates the folded spring of odd number and plural number is folded
Another structure of spring, folds spring 807 and 805 contact point of small valve core is smaller, according to structure shown in Fig. 4 and Fig. 6 and installation method
Small valve core 805 be may result in switching process, due to the vibration that media flow generates, disc spring 807 is caused to misplace, scratch is matched
Conjunction face influences valve seal performance and safety, should avoid using such folded spring structure and installation method as far as possible in practical application.
In one embodiment of the utility model, piston ring 9 is metallic piston ring.Piston ring 9 is in addition to playing basic lead
To effect, the stabilization in gap between piston ring 9 and upper bush 604 also can ensure that.The piston ring of common material, uses at high temperature
When biggish gap can be set between upper bush and spool, be easy to cause herein that gap negotiability and pilot-operated type small valve core are logical
The unmatched problem of road negotiability.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of pilot-operated type adjusting valve, including valve rod (1), valve deck (2), valve body (3), the valve rod (1) runs through the valve deck (2)
Center and be slidably connected with the valve deck (2), the valve deck (2) and the valve body (3) are detachably fixed connection, the valve body
(3) it is equipped with the inflow chamber (4) separated by S type partition (301) in and flows out chamber (5), the inflow chamber below the valve deck (2)
(4) valve cage (6) are equipped in, valve cage (6) setting is on the intermediate platform of the S type partition (301), and the valve cage (6)
The intermediate through-hole connection of the opening and S type partition (301) of lower end becomes coaxial channel (7), is additionally provided with inside the valve cage (6)
One coaxial pilot-operated type core assembly (8), the pilot-operated type core assembly (8) connect with valve rod (1), and in the valve rod
(1) it is moved up and down in the coaxial channel (7) under drive；It is characterized by: being provided with band throttle orifice on the valve cage (6)
(602) sleeve (601), pilot-operated type core assembly (8) lower end are provided with cylinder-like structure (801), the cylindric knot
Structure (801) is inserted into the intermediate coaxial channel (7) of the S type partition (301), and the cylinder-like structure (801) side wall
It is provided with multiple spool bores (802).
2. pilot-operated type adjusting valve according to claim 1, it is characterised in that: the pilot-operated type core assembly (8) is by spool
Gland (803) is removably fixedly connected with composition with spool (804), in the spool (804) and the spool gland (803)
Small valve core (805) are equipped in the cavity surrounded, small valve core (805) upper end is removably fixedly connected with valve rod (1), described
Small valve core (805) lower end and spool (804) form linear sealing, and the small valve core (805) lower end be formed with spool (804) it is folded
Spring room (806) is provided with folded spring (807) in the folded spring room (806), and folded spring (807) compression supports the small valve core
(805)。
3. pilot-operated type adjusting valve according to claim 2, it is characterised in that: the spool gland (803) and the small valve
Multiple balance holes passed through using fluid are equipped in core (805).
4. pilot-operated type adjusting valve according to claim 2, it is characterised in that: the ring on the outside of the upper end of the spool (804)
Piston ring (809) are equipped in shape slot (808), the middle part of the spool (804) is equipped with the accommodating cavity for installing small valve core (805)
(810), the lower part of the spool (804) is cylinder-like structure (801), and the cylinder-like structure side wall is provided with circumferentially distributed
Multiple spool bores (802), and the cylinder-like structure (801) center is equipped with the leader channel that is connected to accommodating cavity (810)
(811)。
5. pilot-operated type adjusting valve according to claim 4, it is characterised in that: the valve cage (6) by top upper bush
(604), the sleeve (601) at middle part and the valve seat (603) of bottom are fixedly connected to form.
6. pilot-operated type adjusting valve according to claim 5, it is characterised in that: the upper bush (604) and the piston ring
(809) sealing is formed, and there are gaps between the upper bush (604) and the piston ring (809).
7. pilot-operated type adjusting valve according to claim 5, it is characterised in that: sleeve (601) side wall is equipped with multiple
Circumferentially distributed throttle orifice (602).
8. pilot-operated type adjusting valve according to claim 5, it is characterised in that: the valve seat (603) and the spool (804)
Linear sealing is formed, and there are gaps between the valve seat (603) and the cylinder-like structure (801) of the spool (804) lower part.
9. pilot-operated type adjusting valve according to claim 4, it is characterised in that: the valve rod (1) drives the small valve core
(805) be moved upward to be close to spool gland (803), the inflow chamber (4), the valve cage (6), the spool gland (803),
The small valve core (805), the leader channel (811), the outflow chamber (5) form access.
10. pilot-operated type adjusting valve according to claim 4, it is characterised in that: the small valve core (805) is close to the spool
Gland (803), the valve rod (1) drive the pilot-operated type core assembly (8) to move up, the inflow chamber (4), the valve cage
(6), the leader channel (811), the outflow chamber (5) form access.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820814797.2U CN208348600U (en) | 2018-05-29 | 2018-05-29 | Pilot-operated type adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820814797.2U CN208348600U (en) | 2018-05-29 | 2018-05-29 | Pilot-operated type adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208348600U true CN208348600U (en) | 2019-01-08 |
Family
ID=64891170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820814797.2U Active CN208348600U (en) | 2018-05-29 | 2018-05-29 | Pilot-operated type adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208348600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506541A (en) * | 2018-05-29 | 2018-09-07 | 艾坦姆流体控制技术（北京）有限公司 | Pilot-operated type adjusting valve |
-
2018
- 2018-05-29 CN CN201820814797.2U patent/CN208348600U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506541A (en) * | 2018-05-29 | 2018-09-07 | 艾坦姆流体控制技术（北京）有限公司 | Pilot-operated type adjusting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191104 Address after: 272000 No.1 HENGFA Road, Beisu Town, Zoucheng City, Jining City, Shandong Province Patentee after: Etam fluid control technology (Shandong) Co., Ltd Address before: 101300 29 front street, Linhe village, Renhe Development Zone, Shunyi District, Beijing Patentee before: ETAM FLUID CONTROL TECHNOLOGY (BEIJING) CO., LTD. |
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| TR01 | Transfer of patent right |