CN203309328U - Improved water supply regulating valve - Google Patents
Improved water supply regulating valve Download PDFInfo
- Publication number
- CN203309328U CN203309328U CN2013203090833U CN201320309083U CN203309328U CN 203309328 U CN203309328 U CN 203309328U CN 2013203090833 U CN2013203090833 U CN 2013203090833U CN 201320309083 U CN201320309083 U CN 201320309083U CN 203309328 U CN203309328 U CN 203309328U
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- CN
- China
- Prior art keywords
- valve
- labyrinth disc
- valve body
- spool
- improved type
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- 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.)
- Expired - Lifetime
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- Lift Valve (AREA)
Abstract
The utility model discloses an improved water supply regulating valve, which comprises a valve body, a valve element, a valve seat, a valve rod and a bonnet, wherein a water inlet and a water outlet are formed in the valve body, and are communicated with the interior of the valve body; the bonnet is fixedly arranged on the valve body through a bolt component; the lower end of the valve rod extends into the valve body, and is connected with the valve element, and the upper end of the valve rod extends from the bonnet, and is connected with a driving mechanism; a labyrinth disc is arranged above the valve seat in the valve body; an annular flow equalization hood is arranged above the labyrinth disc; the valve element is in sliding fit with the labyrinth disc and the flow equalization hood; the valve element can penetrate through the labyrinth disc and the flow equalization hood in a sliding way; the labyrinth disc is shaped into a tapered ring; the valve element is a tapered valve element adapted to the tapered ring-shaped labyrinth disc. According to the improved water supply regulating valve, a labyrinth type tortuous passageway structure is adopted for the valve element, so that pressure is lowered in a multi-level balancing way, and the flow regulation performance is improved; the outer side of the tapered valve element can be matched and jointed with the inner wall of the tapered ring-shaped labyrinth disc, so that the improved water supply regulating valve has a good sealing effect, the water leakage phenomenon of the valve body is avoided, and the service life is prolonged.
Description
Technical field
The utility model relates to the modulating valve in the water supply system of power station, particularly a kind of improved type feed-regulating valve.
Background technique
Feed-regulating valve is arranged between feed water pump and boiler, along with domestic Thermal Power Generation Industry towards large unit future development, unit parameter is more and more higher, nominal pressure also improves thereupon, can reach 60mPa, and traditional feed-regulating valve is to belong to the board-like reducing pressure by regulating flow of multi-stage porous, its resistance coefficient is 10, can solve the problem of cavitation of pressure reduction valve when not high.But in postcritical unit more than 300MW, because flow velocity is high, make the problem such as erosion, vibration, noise of valve more serious, and flow increases with the variation of stroke, adjusting function also decreases, and greatly reduce the actual life of valve because of continuous firing face under high pressure, high temperature, high flow rate, and spool often opens and closes sliding friction, cause the outside of spool to damage, reduce sealing effect, make valve body generation water leakage phenomenon.
In sum, for deficiency and the defect of existing feed-regulating valve, need especially that a kind of regulating effect is good, the feed-regulating valve of long service life, to address the above problem.
The model utility content
The purpose of this utility model is to provide a kind of improved type feed-regulating valve, and this improved type feed-regulating valve structure is special, regulating effect good, long service life.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of improved type feed-regulating valve, comprise valve body, spool, valve seat, valve rod and valve gap, on described valve body, be provided with the water intake and the water outlet that with valve inner, are communicated with, described valve gap is fixed on described valve body by bolt assembly, described valve rod lower end is stretched into described valve inner and is connected with described spool, described valve rod upper end is stretched out outside valve gap and is connected with driving mechanism, described valve inner valve seat top is provided with labyrinth disc, the labyrinth disc top is provided with the current-sharing cover, described current-sharing cover is annular, described spool and labyrinth disc, the current-sharing cover is slidably matched, spool can slide through labyrinth disc, the current-sharing cover, it is characterized in that, described labyrinth disc is tapered collar, described spool is the taper valve core adapted with described tapered collar labyrinth disc.
In a kind of preferred embodiment of the present utility model, on the intake tunnel of described water intake, be provided with the spoiler of some interlaced arrangement, on described spoiler, offer some decompression holes.
In a kind of preferred embodiment of the present utility model, on described spool, be provided with some inclination step-down through holes.
In a kind of preferred embodiment of the present utility model, on described labyrinth disc, be provided with the tortuous runner of mazy type.
In a kind of preferred embodiment of the present utility model, described valve rod periphery is provided with the seal ring with described valve bonnet seal.
In a kind of preferred embodiment of the present utility model, between described valve gap and valve body, be provided with the valve gap packing ring.
In a kind of preferred embodiment of the present utility model, be provided with valve washer between described valve body and valve seat.
In a kind of preferred embodiment of the present utility model, on described valve gap, be provided with support, described driving mechanism comprises bearing, threaded bush and the contiguous block of bearing, actuate valve stem, support sleeve, between described support and bearing, be bolted to connection, described bearing is arranged in bearing, described threaded bush is arranged on internal stent and is threaded connection with the upper end of described actuate valve stem, described threaded bush's connecting bushing, and described actuate valve stem is connected with described valve rod upper end by contiguous block.
Owing to having adopted technological scheme as above, the beneficial effects of the utility model are: valve core structure adopts the tortuous flow passage structure of mazy type, realize multistage balance step-down, improve the resistance coefficient of throttling element, increase the degree of amplitude modulation of resistance coefficient, reduce the runner flow velocity, greatly improved the Flow Adjusting Performance of high-differential-pressure regulating valve, modulating valve vibration and noise have been reduced, the outside of taper valve core is wear-resisting, when the outer lateral wearing of taper valve core, while closing, only need to taper valve core, apply larger pressure by valve rod, the outside of taper valve core can engage with tapered collar labyrinth disc inwall coupling, has good sealing effect, guarantee that water leakage phenomenon does not occur valve body, increase the service life.The spoiler arranged on the intake tunnel of water intake can play and reduce in advance the hydraulic pressure that enters valve inner, reaches pre-antihypertensive effect.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of improved type feed-regulating valve of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
A kind of improved type feed-regulating valve shown in Figure 1, comprise valve body 100, spool 500, valve seat 400, valve rod 300 and valve gap 200, valve body 100 both sides have intake-outlet 110,120, intake-outlet 110,120 communicates with the inlet and outlet channel that is arranged on valve body 100 inside, valve body 100 inside have valve seat 400, inlet and outlet channel dislocation layout, namely inlet and outlet channel lays respectively at the both sides up and down of valve seat 400.
Valve gap 200 is fixed on valve body 100 by bolt assembly 220, and valve rod 300 lower ends are stretched into valve body 100 inside and are connected with spool 500, and valve rod 300 upper ends are stretched out outside valve gap 200 and are connected with driving mechanism 700.In order to reach sealing function, at valve gap 200, be provided with valve gap packing ring 210 with the phase-contact surface place of valve body 100, make it to reach the function of sealing.Valve rod 300 slidably passes valve gap 200, and valve rod 300 peripheries are provided with seal ring 310 and realize and valve gap 200 sealings.
Between valve seat 400 and valve body 100, be provided with valve washer 410.The top of the interior valve seat 400 of valve body 100 is provided with labyrinth disc 610, current-sharing cover 620, current-sharing cover 620 is annular, spool 500 can slide through labyrinth disc 610, current-sharing cover 620, labyrinth disc 610 is tapered collar, and spool 500 is the taper valve core adapted with tapered collar labyrinth disc 610, on spool 500, is provided with some inclination step-down through holes 510, realize step-down, when simultaneously, medium is by inclination step-down through hole 510, can, to downward pressure of spool 500 generations, impel spool 500 and valve seat 400 sealings.On labyrinth disc 610, be provided with the tortuous runner of mazy type, realize multistage balance step-down, improve the resistance coefficient of throttling element, increase the degree of amplitude modulation of resistance coefficient, reduce the runner flow velocity, greatly improved the Flow Adjusting Performance of high-differential-pressure regulating valve, reduced modulating valve vibration and noise.
On the intake tunnel 111 of water intake 110, be staggeredly equipped with some spoilers 112, on spoiler 112, offer some decompression hole (not shown)s, can play and reduce in advance the hydraulic pressure that enters valve body 100 inside, reach pre-antihypertensive effect.
The top of valve gap 200 is provided with support 230, and support 230 is connected with valve gap 200 by bolt, and driving mechanism 700 is installed on support 230.
Driving mechanism 700 comprises bearing 740, threaded bush 750 and the contiguous block 760 of bearing 710, actuate valve stem 720, support sleeve 730, support 230 upper ends are connected with bearing 710 by bolt, axle sleeve 730 is on bearing 710, axle sleeve 730 is connected with actuate valve stem 720, and actuate valve stem 720 connects valve rod 300 by contiguous block 760.Bearing 740 is arranged in bearing 710, and threaded bush 750 is arranged on the upper end of support 230, has internal thread in threaded bush 750, has outside thread on actuate valve stem 720, makes actuate valve stem 720 mutually to move relative to threaded bush 750.
For convenient spool 500 strokes that show, on contiguous block 760, also be provided with a pointer, and a side is labeled with scale on support 230, pointer movement can be indicated corresponding amount of movement.
During work, by axle sleeve 730, rotarily drive actuate valve stem 720 and move up and down, and then further be with ovable valve stem 300, then be with movable valve plug 500 to move, thereby adjust by the uninterrupted of the medium of valve body 500.Because spool 500 is taper valve core, when the outer lateral wearing of taper valve core, while closing, only need apply larger pressure by 300 pairs of taper valve cores of valve rod, the outside of taper valve core can engage with tapered collar labyrinth disc 610 inwall couplings, have good sealing effect, guarantee that water leakage phenomenon does not occur valve body 100, increase the service life.
Above demonstration and described 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; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. improved type feed-regulating valve, comprise valve body, spool, valve seat, valve rod and valve gap, on described valve body, be provided with the water intake and the water outlet that with valve inner, are communicated with, described valve gap is fixed on described valve body by bolt assembly, described valve rod lower end is stretched into described valve inner and is connected with described spool, described valve rod upper end is stretched out outside valve gap and is connected with driving mechanism, described valve inner valve seat top is provided with labyrinth disc, the labyrinth disc top is provided with the current-sharing cover, described current-sharing cover is annular, described spool and labyrinth disc, the current-sharing cover is slidably matched, spool can slide through labyrinth disc, the current-sharing cover, it is characterized in that, described labyrinth disc is tapered collar, described spool is the taper valve core adapted with described tapered collar labyrinth disc.
2. a kind of improved type feed-regulating valve as claimed in claim 1, is characterized in that, on the intake tunnel of described water intake, is provided with the spoiler of some interlaced arrangement, on described spoiler, offers some decompression holes.
3. a kind of improved type feed-regulating valve as claimed in claim 1, is characterized in that, on described spool, is provided with some inclination step-down through holes.
4. a kind of improved type feed-regulating valve as claimed in claim 1, is characterized in that, on described labyrinth disc, is provided with the tortuous runner of mazy type.
5. a kind of improved type feed-regulating valve as claimed in claim 1, is characterized in that, described valve rod periphery is provided with the seal ring with described valve bonnet seal.
6. a kind of improved type feed-regulating valve as claimed in claim 1, is characterized in that, between described valve gap and valve body, is provided with the valve gap packing ring.
7. a kind of improved type feed-regulating valve as claimed in claim 1, is characterized in that, is provided with valve washer between described valve body and valve seat.
8. a kind of improved type feed-regulating valve as claimed in claim 1, it is characterized in that, on described valve gap, be provided with support, described driving mechanism comprises bearing, threaded bush and the contiguous block of bearing, actuate valve stem, support sleeve, between described support and bearing, be bolted to connection, described bearing is arranged in bearing, described threaded bush is arranged on internal stent and is threaded connection with the upper end of described actuate valve stem, described threaded bush's connecting bushing, described actuate valve stem is connected with described valve rod upper end by contiguous block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203090833U CN203309328U (en) | 2013-05-30 | 2013-05-30 | Improved water supply regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203090833U CN203309328U (en) | 2013-05-30 | 2013-05-30 | Improved water supply regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309328U true CN203309328U (en) | 2013-11-27 |
Family
ID=49615540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203090833U Expired - Lifetime CN203309328U (en) | 2013-05-30 | 2013-05-30 | Improved water supply regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203309328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654277A (en) * | 2019-02-25 | 2019-04-19 | 未来我来卫浴科技(广东)有限公司 | Band stream regulatory function presses spool |
| CN114673817A (en) * | 2022-04-08 | 2022-06-28 | 中国飞机强度研究所 | Flow regulating valve |
-
2013
- 2013-05-30 CN CN2013203090833U patent/CN203309328U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654277A (en) * | 2019-02-25 | 2019-04-19 | 未来我来卫浴科技(广东)有限公司 | Band stream regulatory function presses spool |
| CN109654277B (en) * | 2019-02-25 | 2023-12-05 | 未来我来卫浴科技(广东)有限公司 | Pressing valve core with flow regulating function |
| CN114673817A (en) * | 2022-04-08 | 2022-06-28 | 中国飞机强度研究所 | Flow regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |