CN205689765U - A kind of spool, valve and reducing-and-cooling plant - Google Patents
A kind of spool, valve and reducing-and-cooling plant Download PDFInfo
- Publication number
- CN205689765U CN205689765U CN201620159364.9U CN201620159364U CN205689765U CN 205689765 U CN205689765 U CN 205689765U CN 201620159364 U CN201620159364 U CN 201620159364U CN 205689765 U CN205689765 U CN 205689765U
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- CN
- China
- Prior art keywords
- valve
- spool
- main valve
- pilot
- valve plug
- 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 - Fee Related
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Abstract
The utility model discloses a kind of spool, valve and reducing-and-cooling plant, belong to valve manufacture field.Described spool mainly includes pilot valve, main valve plug, spring, coupling nut, pilot seal ring, adjusting pad, holding screw, valve seat and fairlead or sleeve；The inside of described main valve plug has die cavity, is provided with pilot valve, spring, adjusting pad, holding screw in die cavity；The bottom of die cavity is provided with groove, and spring is located in groove；Adjusting pad is positioned on spring, under pilot valve；Coupling nut is connected by screw thread with main valve plug, and main valve plug is fastened by holding screw with coupling nut；Pilot seal is located on the excircle of main valve plug.This utility model can be widely applied to the fields such as the various valves in the operating mode occasion of requirement closedown tightness and maintenance of valve, and therefore application prospect is boundless.
Description
Technical field
This utility model relates to a kind of spool containing pilot valve structure, belongs to valve manufacture field.
Background technology
At present, room temperature valve commonly uses in general domain, and owing to temperature requirement is the highest, pilot seal ring can use
Soft sealing structure, the soft sealing elements of the manufacturing domestic, external, all can meet the requirement of ordinary temperature and pressure.Guide close
When seal ring uses soft sealing structure, spool typically may be designed as balanced type.In actual production, the applying working condition of normal temperature high voltage is little
Seeing, if having this situation to occur, owing to being the structure of balanced type, out-of-balance force is the least, and therefore on an off is beaten in actuator
The power needed during valve closing door is little, so soft sealing structure easily realizes closing under this operating mode the requirement of tightness.
And the middle temperature of some special occasions, worst hot case, while general work temperature height, operating pressure is the highest, this
The operating mode that temperature is high, pressure is high is commonly called as high temperature and high pressure condition.Operating temperature is more than to middle temperature operating mode and the high temperature work of 350 DEG C
Condition, soft sealing elements can not bear, and now needs to apply the metal pilot seal ring of unbalanced structure.For this unbalanced
Structure, out-of-balance force can be the biggest with operating pressure direct proportionality, operating pressure, and out-of-balance force is the biggest, accordingly, it would be desirable to
The power of actuator the biggest.During additionally, apply traditional metal pilot seal ring, the heat of internal materials to be considered is swollen
The fit clearance of bulk and metal pilot seal ring and guiding parts.When gap is too small, occurs as soon as spool and sleeve or lead
To the phenomenon that set is stuck, valve can not carry out opening action or closing motion；If during excesssive gap, valve is in opening
Time, after spool departs from valve seat, spool can not well guide, can be amesiality under the effect of medium power, so can make valve
During closedown, spool and the valve port deviation seal line of valve seat, cause valve closing not tight, leakage occurs；Meanwhile, also it is partial to because of spool
In side, causing spool big with sleeve or fairlead one side clearance, a relative side clearance is little, and the difference of two side clearances makes valve
The adjustability of door is deteriorated, big side, spool gap may result in wash away serious.Therefore, middle temperature, the operating mode of high temperature, especially
High temperature and high pressure condition, wants to ensure that valve reaches the V grade of requirement of valve seal grade, even if installing the actuator of big power output, also
The sealing property requirement being not readily reachable by, also can improve cost.
Utility model content
This utility model aims to provide a kind of spool containing pilot valve structure.
The described spool containing pilot valve structure, mainly includes that pilot valve, main valve plug, spring, coupling nut, guiding are close
Seal ring, adjusting pad, holding screw, valve seat and fairlead or sleeve.The inside of described main valve plug has die cavity, installs in die cavity
There are pilot valve, spring, adjusting pad, holding screw；The bottom of die cavity is provided with groove, and spring is located in groove；Adjusting pad is positioned at spring
On, under pilot valve；Coupling nut is connected by screw thread with main valve plug, and main valve plug is entered by holding screw with coupling nut
Row fastening；Pilot seal is located on the excircle of main valve plug.
Described main valve plug is guided by sleeve or fairlead, and pilot valve is led by the die cavity inwall of main valve plug
To.
Described spring plays help and opens and closes valve or the effect of device.
Described adjusting pad plays the effect of the stroke of fine setting pilot valve.
Described coupling nut plays the effect being fixed in die cavity by each parts in main valve core pattern die cavity.
It is tightr that described holding screw makes primary spools couple with coupling nut, plays the effect of spline, prevents from coupling spiral shell
Female loosening.
Described pilot seal ring uses frictional resistance little and the material of high temperature high voltage resistant.Pilot seal ring is easy for installation, both
Certain sealing effectiveness can be played, the effect of guiding can be played again, it is ensured that the sequencing that pilot valve, main valve plug are closed,
Ensure that spool open at valve, action stability in closing process.
Described valve seat is to be compressed by sleeve or fairlead.Described valve seat is provided with big valve port, the sealing of big valve port
Face seals with the sealing surface of main valve plug.
Described sleeve or fairlead, be that the valve gap by valve is pressed in valve or device.Sleeve or fairlead, play
While regulation effect, main valve plug is guided.
The middle part of described main valve plug die cavity can also have little valve port, the sealing surface of little valve port and the sealing surface of pilot valve
Seal.
This utility model also provides for a kind of valve containing above-mentioned spool or reducing-and-cooling plant, and described valve can be to adjust
Joint valve, stop valve, isolating valve or air relief valve etc..
This utility model has a following several big feature:
1. room temperature, middle temperature, high temperature operating mode under, all can ensure close tightness, reach seal grade V grade and with
On requirement, and be avoided that occur in the structure of conventional unbalanced holds tightly or stuck phenomenon.
2. under not only high temperature but also the special operation condition of high pressure, still can ensure that the tightness of closedown, reach to seal grade V
The requirement of level.Additionally, due to main valve plug is built with spring, serves the effect helping pilot valve to open, decrease and open elder generation
Power needed for guide valve core, thus greatly reduce the power opening the actuator that valve needs, cost-effective.
3. the pilot seal ring of main valve plug excircle, can play certain sealing effectiveness, can rise when High Temperature High Pressure again
To good guide effect, simultaneously as the coefficient of friction of pilot seal ring is little, substantially reduces force of sliding friction, thus subtract
Lack the power of required actuator.Pilot seal ring is easy for installation, it is ensured that the sequencing that main valve plug, pilot valve are closed,
Ensure that spool action stability during valve either on or off, thus also ensure that the spool sealing with valve seat can
By property, effectively prevent the undesirable element affecting valve service life, such as spool and vibrations occur under high-pressure medium；Valve closes
Closing tight, valve port makes erosion and breakseal face etc..
Between main valve plug the most of the present utility model and pilot valve, it is also possible to be designed with the structure in counterpressure hole, in order to
It is balanced with upper cavity pressure rapidly, reduces the time required for balance pressure.
In sum, this spool containing pilot valve structure of this utility model, can be widely applied to require to close sternly
Various valves in the operating mode occasion of close property, such as: regulation valve, stop valve, isolating valve, air relief valve etc., are also applied for desuperheat and subtract
Pressure device, and the field such as maintenance of valve, therefore application prospect is boundless.
Accompanying drawing explanation
Cut-away view when Fig. 1 is guide of the present utility model, main valve plug is turned off；1, coupling nut, 2, clamp screw
Nail, 3, pilot seal ring, 4, pilot valve, 5, adjusting pad, 6, spring, 7, main valve plug, 8, sleeve or fairlead, 9, valve seat.
Fig. 2 is that this utility model pilot valve is opened, structural representation when main valve plug is closed.
Fig. 3 is that this utility model pilot valve is opened, structural representation when main valve plug is opened.
Fig. 4 is the partial enlarged drawing of Fig. 2；5, adjusting pad, 6, spring, 10, little valve port.
Detailed description of the invention
As it is shown in figure 1, this utility model provide spool include main valve plug 7, pilot valve 4, spring 6, coupling nut 1,
Pilot seal ring 3, adjusting pad 5, holding screw 2, valve seat 9 and sleeve or fairlead 8.Main valve plug 7 is by sleeve or fairlead 8
Guiding, have die cavity in main valve plug 7, pilot valve 4, spring 6, adjusting pad 5 are arranged on pilot valve in the die cavity of main valve plug 7
Core 4 is guided by the die cavity inwall of main valve plug 7.Also have little valve port 10 in the middle part of the die cavity of main valve plug 7, be used for and pilot valve
4 seal.Spring 6 plays elastic force effect, helps to open and close valve or device.Coupling nut 1 and main valve plug 7 pass through spiral shell
Stricture of vagina couples, and plays the effect being fixed in die cavity by each parts in main valve plug 7 die cavity.Holding screw 2 by main valve plug 7 with couple
Nut 1 couples tightr, prevents coupling nut 1 from loosening.
Counterpressure hole can also be had on passage between main valve plug 7 and pilot valve 4, after making pilot valve 4 open,
Main valve plug 7 can quickly be opened.
Applying valve of the present utility model or device, its process opened and closed is as follows:
As shown in Figure 2,3, the process that valve is opened: under the effect of actuator power, first open pilot valve 4, then
Open main valve plug 7.
The process of valve closing: under the effect of actuator power, first closes main valve plug 7, is then shut off pilot valve 4.
Under high-temperature and high-pressure conditions, when the valve is open, pilot valve is first opened, although the pressure of medium is higher, but due to
Pilot valve size is little, and for relative main valve plug, out-of-balance force is much smaller, and therefore, opens the execution machine that pilot valve needs
The power of structure is not the biggest；After pilot valve is opened, main valve plug just becomes the spool of balanced type, accordingly even when at elevated pressures, main
The out-of-balance force of spool is also little, and the power of required actuator is the most little；When the valve is closed, the pressure of medium and upper and lower valve
Out-of-balance force produced by the difference in areas of core is downward, plays the effect promoting valve closing, greatly reduce and hold in closing process
The pass valve power of row mechanism, and realize zero leakage, it is ensured that absolute tightness during closedown.
Although this utility model is open as above with preferred embodiment, but it is not limited to this utility model, any
Person skilled in the art, without departing from spirit and scope of the present utility model, can do various changes and modification, therefore
Protection domain of the present utility model should be with being as the criterion that claims are defined.
Claims (10)
1. a spool, it is characterised in that described spool mainly includes pilot valve, main valve plug, spring, coupling nut, guiding
Sealing ring, adjusting pad, holding screw, valve seat and fairlead or sleeve；The inside of described main valve plug has die cavity, peace in die cavity
Equipped with pilot valve, spring, adjusting pad, holding screw；The bottom of die cavity is provided with groove, and spring is located in groove；Adjusting pad is positioned at bullet
On spring, under pilot valve；Coupling nut is connected by screw thread with main valve plug, and holding screw is by main valve plug and coupling nut
Fasten；Pilot seal is located on the excircle of main valve plug.
A kind of spool the most according to claim 1, it is characterised in that described main valve plug is led by sleeve or fairlead
To, pilot valve is guided by the die cavity inwall of main valve plug.
A kind of spool the most according to claim 1, it is characterised in that described coupling nut plays in main valve plug die cavity
Each parts are fixed on the effect in die cavity.
A kind of spool the most according to claim 1, it is characterised in that described pilot seal ring uses frictional resistance little and resistance to
The material of High Temperature High Pressure.
A kind of spool the most according to claim 1, it is characterised in that described valve seat is to be pressed by sleeve or fairlead
Tightly.
A kind of spool the most according to claim 1, it is characterised in that described valve seat is provided with big valve port, big valve port close
Front cover seals with the sealing surface of main valve plug.
A kind of spool the most according to claim 1, it is characterised in that described sleeve or fairlead are the valve gaps by valve
It is pressed in valve.
A kind of spool the most according to claim 1, it is characterised in that the middle part of described main valve plug die cavity also has little valve
Mouthful, the sealing surface of little valve port seals with the sealing surface of pilot valve.
9. a valve, it is characterised in that containing the arbitrary described spool of claim 1-8.
10. a reducing-and-cooling plant, it is characterised in that containing the arbitrary described spool of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159364.9U CN205689765U (en) | 2016-03-02 | 2016-03-02 | A kind of spool, valve and reducing-and-cooling plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159364.9U CN205689765U (en) | 2016-03-02 | 2016-03-02 | A kind of spool, valve and reducing-and-cooling plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689765U true CN205689765U (en) | 2016-11-16 |
Family
ID=57263791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620159364.9U Expired - Fee Related CN205689765U (en) | 2016-03-02 | 2016-03-02 | A kind of spool, valve and reducing-and-cooling plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191612A (en) * | 2017-05-15 | 2017-09-22 | 永嘉县信诚科技服务有限公司 | Steam converter valve |
| 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 |
-
2016
- 2016-03-02 CN CN201620159364.9U patent/CN205689765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191612A (en) * | 2017-05-15 | 2017-09-22 | 永嘉县信诚科技服务有限公司 | Steam converter valve |
| 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 |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20180302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |