CN204533615U - A kind of improved type steam flow control valve - Google Patents
A kind of improved type steam flow control valve Download PDFInfo
- Publication number
- CN204533615U CN204533615U CN201520095909.XU CN201520095909U CN204533615U CN 204533615 U CN204533615 U CN 204533615U CN 201520095909 U CN201520095909 U CN 201520095909U CN 204533615 U CN204533615 U CN 204533615U
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- valve
- sleeve
- tubular spool
- seal ring
- flow control
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- Lift Valve (AREA)
Abstract
A kind of improved type steam flow control valve disclosed in the utility model, comprising: a valve body, has the valve pocket of a connection water inlet flow channel and outlet passage in valve body; One valve gap being fixedly installed on body top; One is arranged on the valve seat bottom valve pocket; One sleeve being positioned at valve pocket, described sleeve offers pod apertures; The one tubular spool being positioned at sleeve; And a valve rod, the upper end of valve rod drives with driver part and is connected, and its lower end is connected with the tubular spool being positioned at sleeve; The urceolus face of tubular spool is provided with upper and lower pilot seal ring, when tubular spool is in minimum aperture, pod apertures on sleeve is between described upper and lower pilot seal ring, and when tubular spool is in maximum opening, the pod apertures on sleeve is positioned at the below of described lower pilot seal ring.Effectively improve the sealability between tubular spool and sleeve, prevent dielectric leakage, also play tubular spool slide-and-guide simultaneously, reduce the effect of frictional force, noise reduction.
Description
Technical field
The utility model relates to instrument and meter for automation field of mechanical technique, particularly relates to a kind of improved type steam flow control valve.
Background technique
Steam flow control valve is commonly referred to as reduction valve, it controls steam flow size to meet the industry such as power station, metallurgy, chemical industry, oil, during as met the different loads such as oxygen-eliminating device, vaporizer, shaft seal vapour, heat supply, factory steam, the requirement of different steam flow.At present, steam flow control valve working environment rather harsh, be in that High Pressure Difference is large for a long time, run under large discharge, the large temperature difference and throttle, valve body adjusting function is caused to be deteriorated, produce and leak and cavitation phenomenon, working life is short, and noise is large, make systematic parameter cannot ensure normal operation, and the structure of existing steam flow control valve is comparatively complicated.Given this, related domain is in the urgent need to improving current steam flow control valve.
Model utility content
Technical problem to be solved in the utility model: provide for the deficiencies in the prior art that a kind of structure is simple, good seal performance, soundproof effect are good, the improved type steam flow control valve of long service life.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of improved type steam flow control valve, comprising:
One valve body, the both sides of described valve body are respectively arranged with water inlet flow channel and outlet passage, have the valve pocket of the described water inlet flow channel of a connection and outlet passage in described valve body;
One valve gap being fixedly installed on described body top;
One is arranged on the valve seat bottom described valve pocket;
One sleeve being positioned at described valve pocket, the upper and lower end of described sleeve is against on described valve gap and valve seat respectively, and described sleeve offers pod apertures;
One is positioned at described sleeve and the tubular spool that can slide along described sleeve axial reciprocating, is formed to seal to contact between the urceolus face of described tubular spool and the inner core face of sleeve; And
One valve rod, the upper end of described valve rod drives with driver part and is connected, and its lower end is connected with the tubular spool being positioned at sleeve to downward-extension through after described valve gap;
The urceolus face of described tubular spool is provided with upper and lower pilot seal ring, when tubular spool is in minimum aperture, pod apertures on described sleeve is between described upper and lower pilot seal ring, when tubular spool is in maximum opening, the pod apertures on described sleeve is positioned at the below of described lower pilot seal ring.
In a preferred embodiment of the present utility model, also comprise one and be arranged on wadding stream cover bottom described valve pocket, described wadding stream cover is densely covered with equal discharge orifice.
In a preferred embodiment of the present utility model, on the inner core face of described sleeve, heap is welded with a stellite layer.
In a preferred embodiment of the present utility model, described upper and lower pilot seal ring is tetrafluoro guide ring.
Owing to have employed technological scheme as above, the beneficial effects of the utility model are: on the urceolus face of tubular spool, be provided with upper and lower pilot seal ring, effectively improve the sealability between tubular spool and sleeve, prevent dielectric leakage, also play tubular spool slide-and-guide simultaneously, reduce the effect of frictional force, noise reduction.The design of wadding stream cover can make dielectric distribution more even, does not produce large swirling action, thus reduces noise.And stellite layer is set on the inner core face of sleeve, improve the wear-resisting property of sleeve, the working life of lengthening sleeve.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of wadding stream cover of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See a kind of improved type closed circulating cooled water regulating valve provided in Fig. 1, figure, comprise valve body 100, valve gap 200, valve seat 300, sleeve 400, tubular spool 500, valve rod 600 and wadding stream cover 700.
The both sides of valve body 100 are respectively arranged with water inlet flow channel 110 and outlet passage 120, and the axis of the axis of the water intake 111 of water inlet flow channel 110 and the water outlet 121 of outlet passage 120 is on same straight line 150.Have the valve pocket 130 of a connection water inlet flow channel 110 and outlet passage 120 in valve body 100, the bottom of valve pocket 130 is provided with a valve seat and installs shoulder hole 140.
Valve gap 200 adopts bolt 210 to be removably mounted on the top of valve body 100, is provided with valve gap packing ring 220 between the lower end surface of valve gap 200 and the end face of valve body 100, improves the sealability between valve gap 200 and valve body 100.
The valve seat that valve seat 300 is arranged on bottom the valve pocket 130 in valve body 100 is installed in shoulder hole 140, installs between shoulder hole 140 be provided with valve washer 310 at valve seat 300 and valve seat, and raising valve seat 300 and valve seat install the sealability between shoulder hole 140.
Sleeve 400 is arranged in the valve pocket 130 in valve body 100, and the upper and lower end 410,420 of sleeve 400 is against on valve gap 200 and valve seat 300 respectively.Sleeve 400 offers pod apertures 430, the design of pod apertures 430 significantly reduces noise.On the inner core face of sleeve 400, heap is welded with a stellite layer (not shown), improves the wear-resisting property of sleeve, the working life of lengthening sleeve.
Tubular spool 500 is positioned at sleeve 400.The upper end 610 of valve rod 600 drives with driver part (not shown) and is connected, and its lower end 620 extends down in sleeve 400 through after valve gap 200, and affixed with the tubular spool 500 being positioned at sleeve 400.Driver part band ovable valve stem 600 moves up and down, and valve rod 600 drives tubular spool 500 to slide along the axial reciprocating of sleeve 400, reaches regulating and controlling valve and leads to the object of closing.
The urceolus face of tubular spool 500 is provided with upper and lower pilot seal ring and groove 510,520 is installed, upper and lower pilot seal ring is installed in groove 510,520 and is embedded with upper and lower pilot seal ring 810,820 respectively, in the present embodiment, upper and lower pilot seal ring 810,820 is preferably tetrafluoro guide ring.When tubular spool 500 is in minimum aperture and modulating valve is cut out, the pod apertures 430 on sleeve 400 is between upper and lower pilot seal ring 810,820; When spool 500 is in maximum opening and modulating valve opens completely, the pod apertures 430 on sleeve 400 is positioned at the below of lower pilot seal ring 820.The design of upper and lower pilot seal ring 810,820 improves the sealability between tubular spool 500 and sleeve 400 effectively, prevents dielectric leakage, also plays tubular spool slide-and-guide simultaneously, reduces the effect of frictional force, noise reduction.
See Fig. 2 and composition graphs 1, wadding stream cover 700 is the tube structure at the band end, wadding flows at the bottom of the cylinder of cover 700 and barrel is densely covered with equal discharge orifice 710, wadding stream cover 700 is inlaid in the bottom of valve pocket 130, the opening of wadding stream cover 700 is towards tubular spool 500, and the equal discharge orifice 710 on wadding stream cover 700 is communicated with the outlet passage 120 of valve body 100.When medium flows through wadding stream cover 700 through sleeve 400, due to wadding stream cover 700 being densely covered with equal discharge orifice 710, making dielectric distribution more even, avoid large swirling action to produce, significantly reduce noise.
Claims (4)
1. an improved type steam flow control valve, comprising:
One valve body, the both sides of described valve body are respectively arranged with water inlet flow channel and outlet passage, have the valve pocket of the described water inlet flow channel of a connection and outlet passage in described valve body;
One valve gap being fixedly installed on described body top;
One is arranged on the valve seat bottom described valve pocket;
One sleeve being positioned at described valve pocket, the upper and lower end of described sleeve is against on described valve gap and valve seat respectively, and described sleeve offers pod apertures;
One is positioned at described sleeve and the tubular spool that can slide along described sleeve axial reciprocating, is formed to seal to contact between the urceolus face of described tubular spool and the inner core face of sleeve; And
One valve rod, the upper end of described valve rod drives with driver part and is connected, and its lower end is connected with the tubular spool being positioned at sleeve to downward-extension through after described valve gap; It is characterized in that,
The urceolus face of described tubular spool is provided with upper and lower pilot seal ring, when tubular spool is in minimum aperture, pod apertures on described sleeve is between described upper and lower pilot seal ring, when tubular spool is in maximum opening, the pod apertures on described sleeve is positioned at the below of described lower pilot seal ring.
2. improved type steam flow control valve as claimed in claim 1, is characterized in that, also comprises one and is arranged on wadding stream cover bottom described valve pocket, described wadding stream cover is densely covered with equal discharge orifice.
3. improved type steam flow control valve as claimed in claim 2, is characterized in that, on the inner core face of described sleeve, heap is welded with a stellite layer.
4. the improved type steam flow control valve as described in any one of claims 1 to 3, is characterized in that, described upper and lower pilot seal ring is tetrafluoro guide ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095909.XU CN204533615U (en) | 2015-02-10 | 2015-02-10 | A kind of improved type steam flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095909.XU CN204533615U (en) | 2015-02-10 | 2015-02-10 | A kind of improved type steam flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533615U true CN204533615U (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520095909.XU Active CN204533615U (en) | 2015-02-10 | 2015-02-10 | A kind of improved type steam flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533615U (en) |
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2015
- 2015-02-10 CN CN201520095909.XU patent/CN204533615U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |