CN204062135U - A kind of labyrinth adjusting valve with cofferdam structure - Google Patents
A kind of labyrinth adjusting valve with cofferdam structure Download PDFInfo
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- CN204062135U CN204062135U CN201420375116.9U CN201420375116U CN204062135U CN 204062135 U CN204062135 U CN 204062135U CN 201420375116 U CN201420375116 U CN 201420375116U CN 204062135 U CN204062135 U CN 204062135U
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- cofferdam structure
- labyrinth
- spool
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- core bag
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Abstract
The utility model discloses a kind of labyrinth adjusting valve with cofferdam structure, comprise: a valve body, one valve seat be connected with valve body, and one is arranged at mazy type core bag above valve seat, also comprise a spool, described spool slip is arranged in the cavity of mazy type core bag formation, it is for regulating rate-of flow, described mazy type core bag is by lower sheeting, middle level component and upper compressing tablet are formed, described middle level component is formed by stacking by some labyrinth discs, cofferdam structure is provided with inside described labyrinth disc, described cofferdam structure accepts the medium that labyrinth disc flows out, medium is avoided directly to wash away spool.Cofferdam structure improve after medium flows out in mazy type core bag to spool and valve seat bring wash away, noise and vibration problem, have working life more for a long time, lower, the better feature of using effect of frequency of maintenance.
Description
Technical field
The utility model relates to a kind of labyrinth adjusting valve with cofferdam structure, under the environment for High Pressure Difference operating modes such as thermal power generation super (super-) critical unit Minimum Flowrate of Feed Pump valves.
Background technique
Modulating valve is widely used in the fields such as thermoelectricity, nuclear power, petrochemical industry, metallurgy.Such as in thermal power generation system, modulating valve plays energy-saving and cost-reducing, safeguards unit safety operation, and its significance is self-evident.Although in today of scientific and technological develop rapidly, the technical development of modulating valve there has also been certain innovation, and the structure of the modulating valve used in systems in which also exists certain defect, cause its working life short, frequency of maintenance is high, considerably increases the cost of system cloud gray model, reduces profit from power plant.
Particularly for the valve be under some special, harsh work condition environments, this phenomenon is very general.Such as Minimum Flowrate of Feed Pump valve, 1000MW super (super-) critical unit Minimum Flowrate of Feed Pump valve needs the pressure reduction born up to nearly 40MPa, and the medium that the generation of this bad working environments lower valve problem was mainly derived from high flow rate flows through spool and valve seat.Cavitation, wash away, high noisy and pipe vibration are all the typical phenomenon that velocity of medium fails to obtain controlling.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of labyrinth adjusting valve with cofferdam structure, comprise mazy type core bag, and cofferdam structure is set at the water outlet of mazy type core bag, improve after medium flows out in mazy type core bag to spool and valve seat bring wash away, noise and vibration problem, have working life more for a long time, lower, the better feature of using effect of frequency of maintenance.
For achieving the above object, the technical solution of the utility model is as follows:
With a labyrinth adjusting valve for cofferdam structure, comprising:
One valve body, a valve seat be connected with valve body, and one is arranged at mazy type core bag above valve seat,
Also comprise a spool, described spool slip is arranged in the cavity of mazy type core bag formation, and it is for regulating rate-of flow,
Described mazy type core bag is made up of lower sheeting, middle level component and upper compressing tablet, described middle level component is formed by stacking by some labyrinth discs, be provided with cofferdam structure inside described labyrinth disc, described cofferdam structure accepts the medium that labyrinth disc flows out, and avoids medium directly to wash away spool.
In a preferred embodiment of the present utility model, described labyrinth disc comprises a disk body, and one is arranged at the labyrinth flow-path for medium throttling on disk body, and described labyrinth flow-path side is provided with entry end, opposite side is provided with outlet end, and outlet end is right against cofferdam structure.
In a preferred embodiment of the present utility model, the height of described cofferdam structure is higher than tray height.
In a preferred embodiment of the present utility model, described cofferdam structure is formed by being surrounded on the projection formed a circle inside disk body.
By technique scheme, the beneficial effects of the utility model are:
The utility model arranges cofferdam structure at the water outlet of mazy type core bag, after medium flows out from mazy type core bag, first conflux in cofferdam structure, pressure medium around cofferdam structure is even spool, assist and play the effect of spool centering, decrease the vibration of spool in cavity and collision, improve the working life of spool, core bag, also reduce noise when valve is actual to be used simultaneously;
And avoid medium and directly wash away spool, reduce medium and damage is washed away, from the working life that improve spool on the one hand to spool cylindrical place;
Further cofferdam structure has certain height, can be blocked by cofferdam structure and change flow direction after layer dielectric flows out from outlet, cofferdam structure makes layer dielectric and top dielectric interact, thus reduce further medium contracts out mouth flowing velocity at core, reduce medium washing away spool and valve seat, improve the working life of spool, valve seat from another point of view.
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, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of labyrinth disc of the present utility model.
Fig. 3 is the sectional view of labyrinth disc of the present utility model.
Fig. 4 is the partial enlarged drawing of labyrinth disc 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.
With reference to Fig. 1, a kind of labyrinth adjusting valve with cofferdam structure, comprising: the valve seat 200 that a valve body 100, is connected with valve body 100, and one is arranged at mazy type core bag 300 above valve seat 200,
Also comprise a spool 400, this spool 400 slide be arranged at mazy type core bag 300 formed cavity 310 in, this spool 400 for regulating rate-of flow,
Above-mentioned mazy type core bag 300 is made up of lower sheeting 310, middle level component 320 and upper compressing tablet 330, described middle level component 320 is formed by stacking by some labyrinth discs 321, cofferdam structure 500 is provided with inside described labyrinth disc 321, described cofferdam structure 500 accepts the medium that labyrinth disc flows out, and avoids medium directly to wash away spool 400.
After medium flows out from the labyrinth flow-path of mazy type core bag 300, first conflux in cofferdam structure 500, pressure medium around cofferdam structure 500 is even spool 400, assist and play the effect of spool centering, decrease the vibration of spool in cavity 310 and collision, improve the working life of spool, core bag, also reduce noise when valve is actual to be used simultaneously.
With reference to shown in Fig. 2, Fig. 3, labyrinth disc 321 comprises a disk body 321a, one is arranged at the labyrinth flow-path 312b for medium throttling on disk body disk body 321a, described labyrinth flow-path side is provided with entry end 312c, and this entrance 312c can be single entrance, also can be two entrances, be two entrances in diagram, opposite side is provided with outlet end 312d, and outlet end 312d can be single outlet, also can be two outlets, be outlet in diagram, and outlet end 312d is right against cofferdam structure 500.
Shown by arrow illustrates the direction of media flow, after medium flows out from the dozens of aperture being circumferentially distributed in mazy type core bag 300, first conflux in cofferdam structure 500, avoid medium and directly wash away spool after aperture flows out, reduce medium and damage is washed away to spool cylindrical place, from the working life that improve spool on the one hand.
With reference to shown in Fig. 4, the height of cofferdam structure 500 is higher than disk body 321a height; Usual cofferdam structure 500 is formed by being surrounded on the projection formed a circle inside disk body.
Cofferdam structure 500 has certain height, can be blocked by cofferdam structure 500 and change flow direction after layer dielectric flows out from outlet, cofferdam structure 500 makes layer dielectric and top dielectric interact, thus reduce further medium contracts out mouth flowing velocity at core, reduce medium washing away spool and valve seat, improve the working life of spool, valve seat from another point of view.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the labyrinth adjusting valve with cofferdam structure, is characterized in that, comprising:
One valve body, a valve seat be connected with valve body, and one is arranged at mazy type core bag above valve seat,
Also comprise a spool, described spool slip is arranged in the cavity of mazy type core bag formation, and it is for regulating rate-of flow,
Described mazy type core bag is made up of lower sheeting, middle level component and upper compressing tablet, described middle level component is formed by stacking by some labyrinth discs, be provided with cofferdam structure inside described labyrinth disc, described cofferdam structure accepts the medium that labyrinth disc flows out, and avoids medium directly to wash away spool.
2. a kind of labyrinth adjusting valve with cofferdam structure according to claim 1, it is characterized in that, described labyrinth disc comprises a disk body, one is arranged at the labyrinth flow-path for medium throttling on disk body, described labyrinth flow-path side is provided with entry end, opposite side is provided with outlet end, and outlet end is right against cofferdam structure.
3. a kind of labyrinth adjusting valve with cofferdam structure according to claim 2, it is characterized in that, the height of described cofferdam structure is higher than tray height.
4. a kind of labyrinth adjusting valve with cofferdam structure according to claim 1, is characterized in that, described cofferdam structure is formed by being surrounded on the projection formed a circle inside disk body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420375116.9U CN204062135U (en) | 2014-07-08 | 2014-07-08 | A kind of labyrinth adjusting valve with cofferdam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420375116.9U CN204062135U (en) | 2014-07-08 | 2014-07-08 | A kind of labyrinth adjusting valve with cofferdam structure |
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| Publication Number | Publication Date |
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| CN204062135U true CN204062135U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420375116.9U Active CN204062135U (en) | 2014-07-08 | 2014-07-08 | A kind of labyrinth adjusting valve with cofferdam structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061861A (en) * | 2016-11-25 | 2017-08-18 | 南通龙源电站阀门有限公司 | A kind of labyrinth type antiscour regulating valve |
-
2014
- 2014-07-08 CN CN201420375116.9U patent/CN204062135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061861A (en) * | 2016-11-25 | 2017-08-18 | 南通龙源电站阀门有限公司 | A kind of labyrinth type antiscour regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER CONSTRUCTION GROUP ENERGY EQUIPMENT CO Free format text: FORMER NAME: SHANGHAI POWER BUILDING AND REPAIRING GENERAL FACTORY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201316, Shanghai, Pudong New Area Town, barley Bay Industrial Zone, air route 80 - 86 Patentee after: POWERCHINA SPEM COMPANY LIMITED Address before: 201316, Shanghai, Pudong New Area Town, barley Bay Industrial Zone, air route 80 - 86 Patentee before: Shanghai Power Equipment Manufacture Co., Ltd. |