CN104565405A - Valve seal protection device - Google Patents
Valve seal protection device Download PDFInfo
- Publication number
- CN104565405A CN104565405A CN201510033984.8A CN201510033984A CN104565405A CN 104565405 A CN104565405 A CN 104565405A CN 201510033984 A CN201510033984 A CN 201510033984A CN 104565405 A CN104565405 A CN 104565405A
- Authority
- CN
- China
- Prior art keywords
- valve
- base
- spool
- cage
- protective equipment
- 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.)
- Pending
Links
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
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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
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a valve seal protection device. A valve comprises a base, a valve element which is installed on the base and a valve cage which covers the valve element and the base; the lateral wall of the valve cage is provided with a plurality of flow holes; the bottom end of the valve element is provided with an inclined valve element seal surface. The valve seal protection device comprises a protection cover which is arranged at the bottom end of the valve element and a groove which is formed in the base; the protection cover can be accommodated inside the groove and is arranged on the external side of the valve element sealing surface; the valve cage is provided with a gap which can simultaneously accommodate the valve element sealing surface and the protection cover. The improved valve seal protection device guarantees the good valve sealing performance, saves resources and reduces production and manufacture costs.
Description
Technical field
The present invention relates to a kind of valve seal protective equipment.
Background technique
Power plant valve, is mainly applicable on the pipeline of the various system of power plant, cuts off or connects pipeline medium, as power plant desulphurization system, ash disposal system, is applicable to the conveying of the media such as water, steam, grey dreg slurry, dry powder.The feature of power plant valve compared with other valve products is high temperature high voltage resistant, and have unique selfsealings design, and pressure is higher, sealability is more reliable.Due to performance technologies characteristic, operating mode special make product also form other products the feature that do not substitute.
The valve cage that valve generally includes fixed base, is arranged on the spool on base and is located on spool and base, the sidewall of valve cage is provided with multiple flow through hole to be passed through to allow the media such as steam.Spool and base are respectively equipped with the sealing surface mutually connected, and sealing face is generally plane of inclination, and such steam is easy this plane of inclination of erosion after metering orifice, thus causes the sealing between sealing surface to be deteriorated, and causes the bad leakage caused of valve closing.
Summary of the invention
The object of the invention is to, for above-mentioned defect of the prior art, provide a kind of valve seal protective equipment of improvement, it guarantees that the sealability of valve is better, and economizes on resources, and reduces manufacturing cost.
For achieving the above object, present invention employs following technological scheme: a kind of valve seal protective equipment, wherein valve comprises base, the valve cage being arranged on the spool on base and being located on spool and base, the sidewall of valve cage offers multiple metering orifice, the bottom of spool has the valve core sealed cover of inclination, it is characterized in that: described valve seal protective equipment comprises the protective housing being arranged on spool bottom and the groove be arranged on base, protective housing can be housed in groove and to be arranged on the outside of valve core sealed cover, valve cage is provided with the breach that simultaneously can hold valve core sealed cover and protective housing.
In addition, the present invention also proposes following attached technological scheme:
Protective housing one extends in the periphery of spool bottom downwards.
Protective housing is mutually concordant with the bottom surface of spool, and in the vertical direction is consistent with the height of valve core sealed cover.
On the sidewall that breach is opened in valve cage and near the position of metering orifice.
Protective housing and groove are ring-type.
The top of base is provided with the base seal face mutually adaptive with valve core sealed cover.
Sealing is provided with between valve cage and base.
Compared to prior art, the invention has the advantages that: the valve seal protective equipment that it provides, be provided with protective housing in the outside of valve core sealed cover and on base, be provided with the groove of this protective housing of collecting, which prevent the consequence that the medium through metering orifice brings sealing effect bad to the direct erosion of valve core sealed cover; And this valve seal protective equipment is directly reequiped on existing valve basis, without the need to redesigning and manufacturing valve, economize on resources, reduce manufacturing cost.
Accompanying drawing explanation
Fig. 1 corresponds to the valve of present pre-ferred embodiments and the plane view of sealing protective device thereof.
Embodiment
Below in conjunction with preferred embodiment and accompanying drawing thereof, technical solution of the present invention is further non-limitingly described in detail.
With reference to Fig. 1, a kind of valve, especially power plant valve, roughly have axially symmetric structure, it valve cage 5 comprising base 1, be arranged on the spool 3 on base 1 and be located on spool 3 and base 1.Spool 3 is driven by valve rod 2 and carries out moving up and down with by valve open or closedown relative to base 1.The sidewall 4 of valve cage 5 offers multiple metering orifice 6 to pass through with media such as water supply, steam.When spool 3 moves up and down, corresponding metering orifice 6 can be carried out airtight or opens, thus regulate the rate-of flow entering valve internal according to actual needs.
The bottom periphery of above-mentioned spool 3 is provided with valve core sealed cover 8, and this valve core sealed cover 8 is plane of inclination.And the periphery of base 1 inner chamber 10 is provided with base seal face 12, this base seal face 12 is the plane of inclination suitable with valve core sealed cover 8, like this when spool 3 is complete and base 1 connects mutually, the mutual close contact of above-mentioned two sealing surfaces 8,12 and adaptation, thus spool 3 and base 1 are sealed completely and close.
Because above-mentioned valve core sealed cover 8 is towards the plane of inclination of metering orifice 6, so through the medium easy erosion sealing face 8 such as steam of metering orifice 6, thus cause the poor sealing between spool 3 and base 1.Given this, the invention provides a kind of valve seal protective equipment, it comprises the protective housing 14 be arranged on outside valve core sealed cover 8, this protective housing 14 is extend straight down from the Basolateral of spool 3, and in the vertical direction is mutually concordant with the bottom surface 16 of spool 3, and in the vertical direction is consistent with the height of valve core sealed cover 8, so that in the horizontal direction can completely blocking medium to the erosion of sealing surface 8, this avoid the consequence that between spool 3 and base 1, sealing effect is bad, namely avoid valve leaks accident.This protective housing 14 is located at the outside of valve core sealed cover 8, is roughly annular projection, and one-body molded with spool 3.Above-mentioned valve seal protective equipment also comprises the groove 16 on the top being arranged on base 1, and this groove 16 is also annular recess, can be matched with above-mentioned protective housing 14.
In addition, the sidewall 4 of above-mentioned valve cage 5 forms breach 18, and this breach 18 is opened in the inner side of sidewall 4 and the position of close metering orifice 6, with the sealing surface 8 holding spool 3 and the safety cover 14 be formed in outside sealing surface 8 simultaneously.Like this; even if existing power plant valve; the present invention only needs to carry out installing safety cover 14 additional and offering groove 16 on existing spool 3 and base 1, and on the sidewall 4 of existing valve cage 5, adds gap 18 to hold the safety cover 14 installed additional, and without the need to reducing the size of existing base 1 and spool 3; like this; ensure that the rate-of flow of the metering orifice 6 by valve cage 5 is constant on the one hand, on the other hand, without the need to redesigning and manufacturing valve; save resource, reduce manufacturing cost.
It is pointed out that above-mentioned preferred embodiment is only and technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. a valve seal protective equipment, the wherein valve valve cage that comprises base, be arranged on the spool on base and be located on spool and base, the sidewall of valve cage offers multiple metering orifice, the bottom of spool has the valve core sealed cover of inclination, it is characterized in that: described valve seal protective equipment comprises the protective housing being arranged on spool bottom and the groove be arranged on base, protective housing can be housed in groove and to be arranged on the outside of valve core sealed cover, and valve cage is provided with the breach that simultaneously can hold valve core sealed cover and protective housing.
2. valve seal protective equipment according to claim 1, is characterized in that: protective housing one extends in the periphery of spool bottom downwards.
3. valve seal protective equipment according to claim 2, it is characterized in that: protective housing is mutually concordant with the bottom surface of spool, and in the vertical direction is consistent with the height of valve core sealed cover.
4. valve seal protective equipment according to claim 1, is characterized in that: on the sidewall that breach is opened in valve cage and near the position of metering orifice.
5. valve seal protective equipment according to claim 1, is characterized in that: protective housing and groove are ring-type.
6. valve seal protective equipment according to claim 1, is characterized in that: the top of base is provided with the base seal face mutually adaptive with valve core sealed cover.
7. valve seal protective equipment according to claim 1, is characterized in that: be provided with Sealing between valve cage and base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033984.8A CN104565405A (en) | 2015-01-23 | 2015-01-23 | Valve seal protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033984.8A CN104565405A (en) | 2015-01-23 | 2015-01-23 | Valve seal protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104565405A true CN104565405A (en) | 2015-04-29 |
Family
ID=53082153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510033984.8A Pending CN104565405A (en) | 2015-01-23 | 2015-01-23 | Valve seal protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763834A (en) * | 2017-03-24 | 2017-05-31 | 徐传堂 | A kind of minimum flow valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107579U (en) * | 1991-10-14 | 1992-06-17 | 王佐才 | Multi-operating mode regulating valve |
| CN2849359Y (en) * | 2005-10-28 | 2006-12-20 | 天津精通控制仪表技术有限公司 | High performance cage regulating valve |
| CN201166124Y (en) * | 2008-01-24 | 2008-12-17 | 纪珂宇 | Sampling valve |
| CN203146854U (en) * | 2013-03-19 | 2013-08-21 | 上海华尔德电站阀门有限公司 | Valve structure capable of preventing sealing face from being washed |
| CN204533593U (en) * | 2015-01-23 | 2015-08-05 | 吴振庭 | Valve seal protective equipment |
-
2015
- 2015-01-23 CN CN201510033984.8A patent/CN104565405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107579U (en) * | 1991-10-14 | 1992-06-17 | 王佐才 | Multi-operating mode regulating valve |
| CN2849359Y (en) * | 2005-10-28 | 2006-12-20 | 天津精通控制仪表技术有限公司 | High performance cage regulating valve |
| CN201166124Y (en) * | 2008-01-24 | 2008-12-17 | 纪珂宇 | Sampling valve |
| CN203146854U (en) * | 2013-03-19 | 2013-08-21 | 上海华尔德电站阀门有限公司 | Valve structure capable of preventing sealing face from being washed |
| CN204533593U (en) * | 2015-01-23 | 2015-08-05 | 吴振庭 | Valve seal protective equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763834A (en) * | 2017-03-24 | 2017-05-31 | 徐传堂 | A kind of minimum flow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |