CN105443791B - A kind of steam control valve - Google Patents
A kind of steam control valve Download PDFInfo
- Publication number
- CN105443791B CN105443791B CN201510915369.XA CN201510915369A CN105443791B CN 105443791 B CN105443791 B CN 105443791B CN 201510915369 A CN201510915369 A CN 201510915369A CN 105443791 B CN105443791 B CN 105443791B
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- China
- Prior art keywords
- hole
- regulating valve
- adjusting spool
- pressure balance
- steam
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/32—Means for additional adjustment of the rate of flow
Abstract
The invention discloses a kind of steam control valves, belong to valve field.The steam control valve includes valve body, fixed valve base, regulating valve seat and adjusting spool, regulating valve stem is provided in adjusting spool, adjusting spool is slidably mounted in regulating valve seat, it is provided with position limiting structure on the contact surface of adjusting spool and fixed valve base, adjusting spool has first pressure balance hole, there is regulating valve stem second pressure balance hole, first pressure balance hole to be connected to second pressure balance hole, there is the escape orifice being connected to second pressure balance hole on regulating valve stem.By the way that first pressure balance hole and second pressure balance hole is arranged, and escape orifice is set on regulating valve stem, so that steam enters after fit clearance through exporting fit clearance by escape orifice by first pressure balance hole and second pressure balance hole, to solve the problems, such as to lead to adjusting spool corrosion and the sliding of influence adjusting spool since steam enters in adjusting spool and the fit clearance of fixed valve base.
Description
Technical field
The present invention relates to valve field, more particularly to a kind of steam control valve.
Background technology
Steam control valve is a kind of valve for being widely used in steam engineering field, and major function is to by valve
Steam flow is adjusted, and meets demand of the gas utilization unit to different steam flows under different working conditions.
The structure of steam control valve is more similar, and main structure includes valve body, fixed valve base, regulating valve seat, regulating valve
Core and regulating valve stem, adjusting spool are usually slidably disposed in regulating valve seat, and changing adjusting spool by regulating valve stem exists
Position in regulating valve seat, to control the flow of steam.
Since steam control valve is usually operated under the steam ambient of high temperature and pressure, steam can enter under the action of high pressure
In fit clearance between adjusting spool and fixed valve base, it is possible to occur condensed water in fit clearance and cause to adjust in this way
Corrosion and the sliding for saving spool are unstable, while steam pressure excessive also result in generates prodigious axial force in adjusting spool,
Increase the difficulty for closing adjusting spool, in some instances it may even be possible to adjusting spool occur and the case where can not sliding is stuck in regulating valve seat.
Invention content
In order to solve steam enter in adjusting spool and the fit clearance of fixed valve base and cause adjusting spool corrosion and
The problem of influencing the sliding of adjusting spool, an embodiment of the present invention provides a kind of steam control valves.The technical solution is as follows：
An embodiment of the present invention provides a kind of regulating valve, the steam control valve includes valve body, bonnet, bottom flange, consolidates
Determine valve seat, regulating valve seat and adjusting spool, regulating valve stem is provided in the adjusting spool, the bottom flange is fixed on the valve
Outside body, the valve body is equipped with an opening, and the bonnet, is fixed on the position of the corresponding opening outside the valve body, with
By the closure of openings, the fixed valve base is mounted on the valve inner, the inside of the valve body is divided into and import phase
Logical first chamber and the second chamber communicated with outlet, the first chamber and the second chamber pass through the fixed valve base
On fixed valve base through flow hole connection, the regulating valve seat be mounted on the second chamber, and be located at the fixed valve base and institute
Between stating bottom flange, regulating valve seat through flow hole is provided on the regulating valve seat, the adjusting spool is slidably mounted on institute
It states in regulating valve seat, the adjusting spool is provided with compatible position limiting structure on the contact surface of the fixed valve base, described
Bottom flange is equipped with through-hole, and the regulating valve stem is pierced by from the through-hole on the bottom flange, and the adjusting spool has first
Pressure compensation opening, the regulating valve stem have second pressure balance hole, the first pressure balance hole and the second pressure flat
Weighing apparatus hole is connected to, and also has the escape orifice being connected to the second pressure balance hole on the regulating valve stem.
Preferably, also there is adjusting spool through flow hole, the adjusting spool through flow hole is through described in the adjusting spool
The both ends of adjusting spool.
Optionally, for the adjusting spool by being slided in the regulating valve seat, it is through-flow that the regulating valve seat is blocked in control
The area in hole.
Optionally, the second chamber be located at the regulating valve seat outside part be annular chamber, the annular chamber with
The outlet.
Preferably, the position limiting structure includes being located at the opening that the first pressure balance hole is surrounded in the adjusting spool
The annular boss at place and the stroke groove being correspondingly arranged on the fixed valve base, the annular boss are inserted into the stroke groove
Afterwards, the madial wall of the stroke groove is bonded with the lateral wall of the annular boss.
Optionally, there is steam extraction hole, the escape orifice to be connected to the steam extraction hole and the second pressure on the bottom flange
Balance hole.
Further, it is provided with guide sleeve between the regulating valve stem and the bottom flange, is provided on the guide sleeve
Connecting hole, the connecting hole are connected to the escape orifice and the steam extraction hole.
Further, first annular chamber, the first annular chamber are formed after the guide sleeve and regulating valve stem cooperation
It is connected to the connecting hole and the escape orifice, forms the second annular chamber after the guide sleeve and bottom flange cooperation, described the
Second ring chamber is connected to the connecting hole and the steam extraction hole.
Preferably, the steam extraction hole is connected to vacuum condensing system.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：By the way that the first pressure is arranged in adjusting spool
The second pressure balance hole being connected to first pressure balance hole is arranged on regulating valve stem, and is set on regulating valve stem for dynamic balance hole
Set escape orifice so that steam enters after adjusting spool and the fit clearance of fixed valve base through being pressed by first pressure balance hole and second
Dynamic balance hole exports fit clearance by escape orifice, to solve since steam enters the cooperation of adjusting spool and fixed valve base
The problem of leading to adjusting spool corrosion in gap and influencing the sliding of adjusting spool.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of steam control valve provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another steam control valve provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
An embodiment of the present invention provides a kind of steam control valves, as shown in Figure 1, the steam control valve include valve body 100, on
Valve deck 120, bottom flange 110, fixed valve base 130, regulating valve seat 160 and adjusting spool 140 are provided with tune in adjusting spool 140
Valve rod 144 is saved, bonnet, 120 and bottom flange 110 are fixed on outside valve body 100, and fixed valve base 130 is mounted on inside valve body 100,
The second chamber that the inside of valve body 100 is divided into the first chamber communicated with import 101 and is communicated with outlet 102, the first chamber
Room is connected to second chamber by the fixed valve base through flow hole 131 on fixed valve base 130, and regulating valve seat 160 is mounted on the second chamber
Room, and between fixed valve base 130 and bottom flange 110, regulating valve seat through flow hole 161 is provided on regulating valve seat 160, it adjusts
Spool 140 is slidably mounted in regulating valve seat 160, and adjusting spool 140 is provided with phase on the contact surface of fixed valve base 130
The position limiting structure a of adaptation, bottom flange 110 are equipped with through-hole, and regulating valve stem 144 is pierced by from the through-hole on bottom flange 110, adjust
There is spool 140 first pressure balance hole 142, regulating valve stem 144 to have second pressure balance hole 143, first pressure balance hole
142 are connected to second pressure balance hole 143, also have the escape orifice being connected to second pressure balance hole 143 on regulating valve stem 144
145, escape orifice 145 is located at the outside of bottom flange 110.
The embodiment of the present invention is set by the way that first pressure balance hole 142 is arranged in adjusting spool 140 on regulating valve stem 144
The second pressure balance hole 143 being connected to first pressure balance hole 142 is set, and escape orifice 145 is set on regulating valve stem 144,
So that steam enters after adjusting spool 140 and the fit clearance of fixed valve base 130 through being pressed by first pressure balance hole 142 and second
Dynamic balance hole 143 exports fit clearance by escape orifice 145, to solve since steam enters adjusting spool 140 and fixes
The problem of leading to 140 corrosion of adjusting spool in the fit clearance of valve seat 130 and influencing the sliding of adjusting spool 140.
As shown in Figure 1, in the present embodiment, also there is adjusting spool through flow hole 141, adjusting spool in adjusting spool 140
Through flow hole 141 runs through the both ends of adjusting spool 140, after steam enters regulating valve seat 160 by fixed valve base through flow hole 131,
Pressure is all generated on two end faces of adjusting spool 140, the steam pressure on two end faces is made to balance.
When realization, adjusting spool 140 blocks regulating valve seat through flow hole 161 by the sliding in regulating valve seat 160, control
Area blocks the area control overcurrent quantity of steam of regulating valve seat through flow hole 161 by control.
Preferably, the part of second chamber being located at outside regulating valve seat 160 is annular chamber 103, annular chamber 103 and outlet
102 connections ensure that rotating occurs in regulating valve seat 160 or when assembling steam control valve, regulating valve seat through flow hole 161 is not at
Position shown in Fig. 1, regulating valve seat through flow hole 161 can be also connected to outlet 102.
Optionally, position limiting structure a includes the opening being arranged in adjusting spool 140 around first pressure balance hole 142
Annular boss 146 and the stroke groove 132 that is correspondingly arranged on fixed valve base 130, annular boss 146 be inserted into stroke groove 132
Afterwards, the lateral wall of the madial wall with annular boss 146 of stroke groove 132 is bonded, after position limiting structure a is bonded to each other, in regulating valve
Toroidal cavity is formed between core 140 and fixed valve base 130, avoids the occurrence of an end face and the fixed valve base 130 of adjusting spool 140
Fitting completely, and cause to make adjusting spool 140 be pressed in hardly possible on fixed valve base 130 due to the steam pressure on other end
The case where to slide.
It should be noted that stroke groove 132 can also be arranged in adjusting spool 140, correspondingly, on fixed valve base 130
Boss is then set, and position limiting structure a also has other a variety of set-up modes.
The embodiment of the present invention additionally provides another steam control valve, as shown in Fig. 2, steam control valve shown in Fig. 2
Structure and the structure of steam control valve shown in FIG. 1 are essentially identical, the difference is that, in embodiment illustrated in fig. 2, escape orifice
145 are located at valve inner, and tool also has steam extraction hole 111 on bottom flange 110, and escape orifice 145 is connected to steam extraction hole 111 and second pressure is flat
Weighing apparatus hole 143 so that the steam in fit clearance passes through steam extraction hole 111 and exports.
Preferably, guide sleeve 150 is provided between regulating valve stem 144 and bottom flange 110, guide sleeve 150 is provided with connection
Hole 153, connecting hole 153 are connected to escape orifice 145 and steam extraction hole 111, after guide sleeve 150 is arranged, can improve cooperation precision, reduce
Leakage of the steam at the fit clearance of regulating valve stem 144 and bottom flange 110, while connecting hole 153 can also be by regulating valve stem 144
With the steam export in the fit clearance of guide sleeve 150.
Further, guide sleeve 150 forms first annular chamber 151, first annular chamber 151 after coordinating with regulating valve stem 144
It is connected to connecting hole 153 and escape orifice 145, guide sleeve 150 forms the second annular chamber 152, the second annular after coordinating with bottom flange 110
Chamber 152 is connected to connecting hole 153 and steam extraction hole 111, and the setting of first annular chamber 151 can ensure that regulating valve stem 144 is in use
It rotates or when assembling steam control valve, escape orifice 145 is not at position shown in Fig. 2, and escape orifice 145 also can be with
Connecting hole 153 is connected to, and the second annular chamber 152, which then can guarantee, to be rotated in guide sleeve 150 or when assembling steam control valve,
Connecting hole 153 is not at position shown in Fig. 2, and connecting hole 153 can be also connected to steam extraction hole 111.
Preferably, steam extraction hole 111 is connected to condenser system, is extracted out the steam in fit clearance by condenser system.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of steam control valve, the steam control valve include valve body, bonnet, bottom flange, fixed valve base, regulating valve seat and
Adjusting spool is provided with regulating valve stem in the adjusting spool, and the bottom flange is fixed on outside the valve body, on the valve body
Equipped with an opening, the bonnet, is fixed on the position of the corresponding opening outside the valve body, by the closure of openings, institute
State fixed valve base be mounted on the valve inner, by the inside of the valve body be divided into the first chamber communicated with import and with go out
The second chamber that mouth communicates, the first chamber and the second chamber pass through the fixed valve base through flow hole on the fixed valve base
Connection, the regulating valve seat are mounted on the second chamber, and between the fixed valve base and the bottom flange, the tune
It is provided with regulating valve seat through flow hole on section valve seat, the adjusting spool is slidably mounted in the regulating valve seat, the tune
Section spool is equipped with through-hole, institute with compatible position limiting structure, the bottom flange is provided on the contact surface of the fixed valve base
It states regulating valve stem to be pierced by from the through-hole on the bottom flange, which is characterized in that the adjusting spool is balanced with first pressure
There is second pressure balance hole, the first pressure balance hole to be connected to the second pressure balance hole for hole, the regulating valve stem,
There is the escape orifice being connected to the second pressure balance hole on the regulating valve stem.
2. steam control valve according to claim 1, which is characterized in that also logical with adjusting spool in the adjusting spool
Discharge orifice, the adjusting spool through flow hole run through the both ends of the adjusting spool.
3. steam control valve according to claim 1, which is characterized in that the adjusting spool passes through in the regulating valve seat
The area of the regulating valve seat through flow hole is blocked in interior sliding, control.
4. steam control valve according to claim 1, which is characterized in that the second chamber is located at the regulating valve seat
External part is annular chamber, the annular chamber and the outlet.
5. steam control valve according to claim 1, which is characterized in that the position limiting structure includes being located at the regulating valve
Around the annular boss of the opening of the first pressure balance hole and the row being correspondingly arranged on the fixed valve base on core
Journey slot, after the annular boss is inserted into the stroke groove, the madial wall of the stroke groove and the lateral wall of the annular boss paste
It closes.
6. steam control valve according to claim 1, which is characterized in that there is steam extraction hole on the bottom flange, it is described to let out
Discharge hole is connected to the steam extraction hole and the second pressure balance hole.
7. steam control valve according to claim 6, which is characterized in that set between the regulating valve stem and the bottom flange
It is equipped with guide sleeve, connecting hole is provided on the guide sleeve, the connecting hole is connected to the escape orifice and the steam extraction hole.
8. steam control valve according to claim 7, which is characterized in that after the guide sleeve coordinates with the regulating valve stem
First annular chamber is formed, the first annular chamber is connected to the connecting hole and the escape orifice, the guide sleeve and the lower valve
The second annular chamber is formed after lid cooperation, second annular chamber is connected to the connecting hole and the steam extraction hole.
9. according to claim 6-8 any one of them steam control valves, which is characterized in that the steam extraction hole and vacuum condensation system
System connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915369.XA CN105443791B (en) | 2015-12-10 | 2015-12-10 | A kind of steam control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915369.XA CN105443791B (en) | 2015-12-10 | 2015-12-10 | A kind of steam control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105443791A CN105443791A (en) | 2016-03-30 |
| CN105443791B true CN105443791B (en) | 2018-07-31 |
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ID=55554310
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510915369.XA Active CN105443791B (en) | 2015-12-10 | 2015-12-10 | A kind of steam control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443791B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106666786A (en) * | 2017-02-20 | 2017-05-17 | 北京白鹤祥和贸易有限公司 | Dried fruit processing machine with pressure adjusting device |
| CN106858668A (en) * | 2017-02-20 | 2017-06-20 | 北京白鹤祥和贸易有限公司 | A kind of multi-functional dry fruit processing machine |
| CN108836854A (en) * | 2018-05-11 | 2018-11-20 | 广西奕琦科技有限公司 | A kind of Chinese medicine steam softening equipment |
| CN110578805A (en) * | 2018-06-08 | 2019-12-17 | 上海漕泾热电有限责任公司 | adjusting valve for high-pressure main steam bypass of waste heat boiler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5983872A (en) * | 1982-11-05 | 1984-05-15 | Toshiba Corp | Steam valve |
| CN202302083U (en) * | 2011-10-18 | 2012-07-04 | 天津国际机械有限公司 | Hydraulic three-way stop valve |
| CN202545864U (en) * | 2012-03-30 | 2012-11-21 | 中国船舶重工集团公司第七0四研究所 | Large-adjustable ratio high-pressure difference steam adjusting valve |
| CN202612662U (en) * | 2012-02-21 | 2012-12-19 | 浙江德卡控制阀仪表有限公司 | High-temperature single-seated valve |
| CN105065696A (en) * | 2015-08-19 | 2015-11-18 | 武汉船用机械有限责任公司 | Quick-closing regulating valve |
-
2015
- 2015-12-10 CN CN201510915369.XA patent/CN105443791B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5983872A (en) * | 1982-11-05 | 1984-05-15 | Toshiba Corp | Steam valve |
| CN202302083U (en) * | 2011-10-18 | 2012-07-04 | 天津国际机械有限公司 | Hydraulic three-way stop valve |
| CN202612662U (en) * | 2012-02-21 | 2012-12-19 | 浙江德卡控制阀仪表有限公司 | High-temperature single-seated valve |
| CN202545864U (en) * | 2012-03-30 | 2012-11-21 | 中国船舶重工集团公司第七0四研究所 | Large-adjustable ratio high-pressure difference steam adjusting valve |
| CN105065696A (en) * | 2015-08-19 | 2015-11-18 | 武汉船用机械有限责任公司 | Quick-closing regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105443791A (en) | 2016-03-30 |
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