CN103591301A - Forged steel bonnet-free stop valve - Google Patents
Forged steel bonnet-free stop valve Download PDFInfo
- Publication number
- CN103591301A CN103591301A CN201210290382.7A CN201210290382A CN103591301A CN 103591301 A CN103591301 A CN 103591301A CN 201210290382 A CN201210290382 A CN 201210290382A CN 103591301 A CN103591301 A CN 103591301A
- Authority
- CN
- China
- Prior art keywords
- valve
- bonnet
- forged steel
- rod assembly
- valve rod
- 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.)
- Granted
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
The invention belongs to forged steel bonnet-free stop valves and particularly relates to a forged steel bonnet-free stop valve which is applicable to various harsh working conditions, simple in structure, reliable and durable. The forged steel bonnet-free stop valve comprises a valve body, a valve rod assembly is arranged in the cavity of the valve body, the head portion of the valve rod assembly is provided with a valve flap, a seal seat, a pressure ring and filler are further sequentially arranged on the valve rod assembly, the valve body is provided with a support in which a filler pressing sleeve assembly is arranged, the end portion of the support is connected with a valve rod nut, the valve rod assembly sequentially penetrates the support, the filler pressing sleeve assembly and the valve rod nut, and the end portion of the valve rod assembly is provided with a hand wheel. The forged steel bonnet-free stop valve has the advantages that the forged steel bonnet-free stop valve is of a bonnet-free structure and the bonnet connected with the valve body is omitted, so that seal leakage problem caused by bonnet connection is solved fundamentally, and the safe reliability of the valve is improved remarkably. According to the forged steel bonnet-free stop valve, a secondary throttle structure is utilized to cope with erosion of high temperature and high pressure mediums to the sealing surface of the seal body and the valve flap. The forged steel bonnet-free stop valve meanwhile solves the problem of lack of upper seal due to lack of the bonnet.
Description
Technical field
The invention belongs to a kind of forged steel without valve gap stop valve, be specifically related to a kind of simple in structure and reliability and durability forged steel that is applicable to various bad working environments without valve gap stop valve.
Background technique
At present, forged steel is all to have valve cover structure without valve gap stop valve, and conventional have following three kinds of structures:
1, bolted bonnet (BB) structure, this structure valve body is connected with valve cover bolt, and valve mechanism is huge;
2, self-fastening pressure sealed valve cap structure, this structure valve gap is by the sealing of valve body lumen self-fastening pressure, and valve mechanism is complicated, and processing request is high;
3, be threaded and add seal welding structure, this structure valve gap is connected with valve body by screw thread, and sealing is mainly by welding, and Security is poor.
Not only there is above-mentioned shortcoming in above structure, and all exists valve body to be connected seal leakage problem with valve gap.
Summary of the invention
The object of this invention is to provide a kind of forged steel without valve gap stop valve, it can be applicable to the forged steel of high reliability long life of various bad working environments without valve gap stop valve.
The present invention realizes like this, a kind of forged steel is without valve gap stop valve, it comprises valve body, in the cavity of valve body, is provided with valve rod assembly, and the head of valve rod assembly is provided with flap, on valve rod assembly also successively be provided with sealing seat, pressure ring and filler, valve body is provided with support, and support is provided with filler pressing sleeve assembly, and the end of support is connected with Stem Mut, valve rod assembly is successively through support, filler pressing sleeve assembly and Stem Mut, and the end of valve rod assembly is provided with handwheel.
Pressure ring is connected with valve body screw thread.
Advantage of the present invention is, it is without valve cover structure, has cancelled the valve gap being connected with valve body, fundamentally solved allly by valve gap, to be connected and the seal leakage problem that produces, and the safety reliability of valve significantly improves.The present invention adopts second throttle structure reply high-temperature high-pressure medium washing away valve body and valve clack sealing surface.The present invention has solved simultaneously because the upper sealing disappearance problem that does not have valve gap to cause.
Accompanying drawing explanation
Fig. 1 is that a kind of forged steel provided by the present invention is without valve gap stop valve schematic diagram.
In figure: 1 valve body; 2 flaps; 3 valve rod assemblies; 4 sealing seats; 5 pressure rings; 6 fillers; 7 supports; 8 filler pressing sleeve assemblies; 9 Stem Muts; 10 handwheels.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
As shown in Figure 1, a kind of forged steel comprises valve body 1 without valve gap stop valve, valve body 1 inside is cavity structure, valve rod assembly 3 is installed in the cavity of valve body 1, the head of valve rod assembly 3 is flap 2 fixedly, on valve rod assembly 3 also successively be set with sealing seat 4, pressure ring 5 and filler 6, on valve body 1, be connected with support 7, on support 7, be connected with filler pressing sleeve assembly 8, the end of support 7 is connected with Stem Mut 9, valve rod assembly 3 is successively through support 7, filler pressing sleeve assembly 8 and Stem Mut 9, and the end of valve rod assembly 3 is connected with handwheel 10.
The present invention is not because there is no valve gap, the Sealing that does not have valve body to be connected with valve gap, so thoroughly eliminated the seal leakage causing due to valve body and being connected of valve gap, the safety reliability of valve significantly improves.
Conventionally upper sealing surface is to process on valve gap, if there is no valve gap, just means and does not go up sealing surface, does not go up sealing configuration.The present invention breaks through Traditional Thinking, in the situation that there is no valve gap, has designed upper sealing configuration, its structure is as follows: pressure ring 5 is threaded with valve body 1, press seal seat 4, makes external sealed face and the valve seal of sealing seat, and inner sealing surface and valve stem seal face form on valve and seal.Valve has upper sealing configuration, has possessed upper sealing function, filler pressurized not when valve wide open opens, and the filler life-span is longer, and valve is safer.
Second throttle structure, the effect of stop valve is mobile medium in cutting out pipeline.Conventionally, valve, in the process of closing, by valve clack sealing surface throttling, is controlled flow, until cut off medium completely.Flap is near to or in contact with sealing surface, and because of throttling action, velocity of medium is the fastest, and medium has and washes away sealing surface, and under high temperature and high pressure condition, it is more serious that sealing surface washes away especially, has influence on the working life of valve.For improving this rough sledding, at valve body lumen outlet passage lower end design throttling platform, when valve proximity is closed, valve body throttling platform overlaps with flap guide table, in overlapping position, forms second throttle.Due to the restriction effect of second throttle structure, within valve opening and short time of closing, MEDIA FLOW reduces through the flow of sealing surface, flow velocity slows down, and has alleviated high speed medium to the washing away of sealing surface, and has improved the working life of valve.
Claims (2)
1. a forged steel is without valve gap stop valve, it is characterized in that: it comprises valve body (1), in the cavity of valve body (1), be provided with valve rod assembly (3), the head of valve rod assembly (3) is provided with flap (2), on valve rod assembly (3) also successively be provided with sealing seat (4), pressure ring (5) and filler (6), valve body (1) is provided with support (7), support (7) is provided with filler pressing sleeve assembly (8), the end of support (7) is connected with Stem Mut (9), valve rod assembly (3) is successively through support (7), filler pressing sleeve assembly (8) and Stem Mut (9), the end of valve rod assembly (8) is provided with handwheel (10).
2. a kind of forged steel as claimed in claim 1 is without valve gap stop valve, it is characterized in that: pressure ring (5) is threaded with valve body (1), pressure ring (5) press seal seat (4), make external sealed face and the valve seal of sealing seat, inner sealing surface and valve stem seal, thereby make valve there is upper sealing configuration, possessed upper sealing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210290382.7A CN103591301B (en) | 2012-08-15 | 2012-08-15 | A kind of forged steel is without valve gap stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210290382.7A CN103591301B (en) | 2012-08-15 | 2012-08-15 | A kind of forged steel is without valve gap stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591301A true CN103591301A (en) | 2014-02-19 |
| CN103591301B CN103591301B (en) | 2016-08-03 |
Family
ID=50081546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210290382.7A Active CN103591301B (en) | 2012-08-15 | 2012-08-15 | A kind of forged steel is without valve gap stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103591301B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114299A (en) * | 2018-10-19 | 2019-01-01 | 江苏神通阀门股份有限公司 | A kind of valve rod double sealing structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB195692A (en) * | 1921-12-06 | 1923-04-06 | Edward Albert Mitchell | Improvements in stop valves |
| CN1352360A (en) * | 2001-12-18 | 2002-06-05 | 黄日新 | Stop valve with changeable valve seat and valve clack |
| CN2918904Y (en) * | 2005-12-31 | 2007-07-04 | 黄燕 | Flushing-resistant stop valve |
| CN202032097U (en) * | 2011-04-11 | 2011-11-09 | 南通市力沛流体阀业有限公司 | Small-bore dual-sealed supercritical cut-off valve |
| CN202252311U (en) * | 2011-09-29 | 2012-05-30 | 环球阀门集团有限公司 | Ultrahigh-pressure and small-caliber forged steel check valve |
-
2012
- 2012-08-15 CN CN201210290382.7A patent/CN103591301B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB195692A (en) * | 1921-12-06 | 1923-04-06 | Edward Albert Mitchell | Improvements in stop valves |
| CN1352360A (en) * | 2001-12-18 | 2002-06-05 | 黄日新 | Stop valve with changeable valve seat and valve clack |
| CN2918904Y (en) * | 2005-12-31 | 2007-07-04 | 黄燕 | Flushing-resistant stop valve |
| CN202032097U (en) * | 2011-04-11 | 2011-11-09 | 南通市力沛流体阀业有限公司 | Small-bore dual-sealed supercritical cut-off valve |
| CN202252311U (en) * | 2011-09-29 | 2012-05-30 | 环球阀门集团有限公司 | Ultrahigh-pressure and small-caliber forged steel check valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114299A (en) * | 2018-10-19 | 2019-01-01 | 江苏神通阀门股份有限公司 | A kind of valve rod double sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103591301B (en) | 2016-08-03 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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