CN1792405A - Miniature guide float-valve - Google Patents
Miniature guide float-valve Download PDFInfo
- Publication number
- CN1792405A CN1792405A CN 200510122052 CN200510122052A CN1792405A CN 1792405 A CN1792405 A CN 1792405A CN 200510122052 CN200510122052 CN 200510122052 CN 200510122052 A CN200510122052 A CN 200510122052A CN 1792405 A CN1792405 A CN 1792405A
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- valve
- float
- miniature guide
- guide float
- gap
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Abstract
A guiding miniature floating valve used as a mass-transfer separation unit of plate tower is composed of a valve cover with the long-strip polygonal shape and the spacing plates bent downward at its both ends, and two legs which are the extended and bent parts at the both ends of said valve cover. One of two legs has a flow guiding hole.
Description
Technical field
The present invention relates to a kind of mass transfer resolution element in the plate column, a kind of miniature guide float-valve of saying so more specifically.
Background technology
Valve tower is because of having good operating characteristics, higher plate efficiency and bigger disposal ability, and the rectifying in oil and chemical industry, absorption, gas such as propose at the application that obtains in the gas-liquid mass transfer operation more and more widely.
Divide from the valve body machine configurations, existing valve body can be divided into circle and strip substantially.In practical operation, this two classes float valve has following characteristics respectively:
With F1 type float valve is the circular float valve of representative, has the advantage that operating flexibility is big, plate efficiency is higher, pressure drop is moderate and leakage rate is little, but the gas that comes out from circular valve opening to all the winds blows out, the gas passage effective area is restricted, and liquid dispersion and entrainment phenomenon were serious when gas speed was big, and gradient of liquid level is bigger, and the rotation that does not in use stop, make valve body easy to wear or come off, finally cause the gas-liquid short circuit, plate efficiency seriously descends.Because the spacing of the type float valve on column plate has standard code, percent opening is lower, is no more than 10 ~ 13%, has limited production capacity in addition.
At the many disadvantages of F1 type float valve, new strip float valve appears both at home and abroad constantly, and as L1 bar shaped, T row bar shaped, ship shape, float valve such as trapezoidal, in industry was on probation, their replaced more or less can playing behind F1 type float valve the effect of the synergy of expanding production.But such strip float valve valve body is bigger, and open ratio of plate is less, and disposal ability is very limited.For trapezoidal guide float-valve, the gradient of two waists is too big in addition, when liquid flowing strength hour, motive force to liquid layer is too big, and causes the negative meniscus gradient, and the tower plate operation performance is had a negative impact, though and increased motive force, but still can't eliminate the fluid stagnation district on the column plate to liquid.
Tsing-Hua University has developed circular ADV differential float valve, less valve body and unique valve opening structure, help eliminating the trapping phenomena of liquid on column plate, and its special structure can not rotated it in application, valve body is not easy to wear or come off, but the percent opening that its circular configuration causes is not high and column plate on the liquid dispersion phenomenon still inevitably restricting production capacity.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, comprehensively draw the advantage of strip float valve and circular ADV differential float valve, provide a kind of reasonable in design, make and easy to operate, can effectively improve the miniature guide float-valve of equipment mass-transfer efficiency and production capacity.
For achieving the above object, the present invention is achieved by the following technical solutions:
Miniature guide float-valve of the present invention, it comprises valve gap and valve leg, and valve gap 1 is rectangular polygon, and the two ends of valve gap are respectively arranged with decurved distance piece 4; Article one, valve leg 2 is provided with the pod apertures 5 of arbitrary shape.
According to the valve gap shape it is called rectangle, trapezoidal, polygon miniature guide float-valve.
The both sides of valve gap are downward-sloping respectively, and the angle of sloping portion and valve gap is 30 ° ~ 80 °.At two of sloping portion a slightly decurved distance piece is arranged respectively, play the effect of the minimum aperture of restriction float valve.When gas speed is very low, valve gap and column plate are contact and are seated on the valve opening by it, remaining certain aperture air feed stream evenly passes through, and avoids valve block to open and close irregular pulsation phenomenon, also can prevent to stop work back float valve and the column plate phenomenon that bonds.
The valve gap area of the valve gap area of miniature guide float-valve and ADV differential float valve is approaching.Under identical aperture, the gas channel area of rectangle miniature guide float-valve is compared with ADV differential float valve can increase by 60 ~ 80%.Trapezoidal miniature guide float-valve can increase by 40 ~ 50%, can effectively improve the device processes amount.For trapezoidal miniature guide float-valve,, two minor faces of its valve gap differ 2 ~ 10mm, and are longer because of two long limits, so its gradient is less, avoid at liquid flowing strength hour occurring the negative meniscus gradient on the column plate.Trapezoidal valve is used in the column plate arch area more, improves the liquid flow condition in dead band, optimizes the gas-liquid contact.
Compare with strip float valve of the prior art, correspondence of the present invention the valve opening area little, and the valve spacing also can reduce, and effectively improved the percent opening on the column plate, the purpose that can reach step-down and expand production.
The valve leg of two support valve closure lays respectively at two minor face places of float valve valve gap, and the two size and dimension can be identical, also can an end greater than the other end, a undersized end is positioned at the downstream of liquid flow direction.
Can convince discharge orifice by patient analysis on the preceding valve leg of miniature guide float-valve, for trapezoidal miniature guide float-valve, preceding valve leg refers to its valve leg of a short base correspondence; For the rectangle float valve, preceding valve leg can be chosen the valve leg of a minor face correspondence wantonly, and its perforate can be an arbitrary shape.Like this, when air-flow passes through float valve two wing passages in level, increased a horizontal power that blows out air-flow forward, guiding liquid flows forward.What blow out from both sides on the one hand, plays the effect that disperses uniform liquid perpendicular to the flow direction air-flow; On the other hand, blow out the air-flow that is parallel to flow direction, have guide functions, can improve the bubbling state between valve, also help the reduction gradient of liquid level, eliminate fluid stagnation air-teturning mixed phenomenon on the column plate, improve plate efficiency from pod apertures.Because the airflow direction in the operating process is near level, the drop of generation has initial velocity upwards hardly, has reduced back-mixing between entrainment and plate, has improved separative efficiency and disposal ability.
Article two, the shutoff of valve leg air-flow back-mixing space, help improving separative efficiency.The valve pin that is arranged in valve leg bottom guarantees that float valve is not blown out from valve opening by air-flow, and limits the maximum opening of float valve with the valve leg.
Miniature guide float-valve among the present invention has kept the valve body structure that floats, so that gas passage area can be regulated with the size of gas phase load, improves the operating flexibility of column plate.In addition, the valve body structure of its strip design guarantees that float valve in use is difficult for rotation, reduces wear and comes off.The present invention is simple in structure, and it is convenient to make, install, overhaul, and can be widely used in the tower of industrial circles such as oil refining, petrochemical industry, pharmacy.
Description of drawings
Fig. 1 is the structural representation of miniature guide float-valve of the present invention
Fig. 2 is the assembling schematic diagram of miniature guide float-valve of the present invention
Fig. 3 is the rectangle of the present invention/distribution schematic diagram of trapezoidal miniature guide float-valve on column plate.
Wherein,
The 1-valve gap, 2-valve leg, 3-valve pin, 4-distance piece, 5-pod apertures, 6-column plate, 7-valve opening, 8-arch area.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
As illustrated in fig. 1 and 2, miniature guide float-valve of each valve opening 7 corresponding installation on the column plate 6, trapezoidal miniature guide float-valve is adapted at using near the column plate arch area, and rectangle miniature guide float-valve is adopted in other zone, as shown in Figure 3.A valve pin 3 is directly bent when making float valve, and another bends after float valve installs on the column plate, guarantees that valve body moves up and down but unlikely stripping smoothly, and the maximum opening of restriction float valve.After float valve was opened, the air-flow promotion liquid that blows out from pod apertures 5 advanced, and helps to eliminate the dead band; And when load hour, valve body sinks, and pod apertures is closed, and can not occur blowing the negative effect of thin liquid layer when underload.The sloping portion of valve gap 1 both sides and the angle of valve gap are 75 °, and a slightly decurved distance piece 4 is arranged respectively at two of sloping portion, play the effect of the minimum aperture of restriction float valve.When gas speed is very low, valve gap and column plate are contact and are seated on the valve opening by it, remaining certain aperture air feed stream evenly passes through, and avoids valve block to open and close irregular pulsation phenomenon, also can prevent to stop work back float valve and the column plate phenomenon that bonds.
When mounted, must guarantee that the pod apertures direction on the preceding valve leg 1 is consistent with the liquid flow path direction on the column plate.
The miniature guide float-valve that the present invention proposes, be described by preferred embodiment, person skilled obviously can be in not breaking away from content of the present invention, spirit and scope to structure as herein described with the preparation method changes or suitably change and combination, realize the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content.
Claims (9)
1. miniature guide float-valve, it comprises valve gap and valve leg, it is characterized in that: valve gap (1) is rectangular polygon, the two ends of valve gap are respectively arranged with decurved distance piece (4); Article one, valve leg (2) is provided with the pod apertures (5) of arbitrary shape.
2. a kind of miniature guide float-valve as claimed in claim 1 is characterized in that described polygon is a rectangle or trapezoidal.
3. a kind of miniature guide float-valve as claimed in claim 1 is characterized in that described pod apertures is rectangle, circle, triangle, trapezoidal or polygon.
4. a kind of miniature guide float-valve as claimed in claim 1 is characterized in that the both sides of described valve gap are downward-sloping respectively, and the angle of sloping portion and valve gap is 30 ° ~ 80 °.
5. a kind of miniature guide float-valve as claimed in claim 1 is characterized in that described valve leg is two, lays respectively at two minor face places of valve gap, and the two size shape is identical.
6. a kind of miniature guide float-valve as claimed in claim 1, it is characterized in that described two valve legs be an end greater than the other end, a undersized end is positioned at the downstream of liquid flow direction.
7. a kind of miniature guide float-valve as claimed in claim 6 is characterized in that a described undersized end valve leg is provided with pod apertures.
8. a kind of miniature guide float-valve as claimed in claim 1 is characterized in that the valve gap area of the valve gap area of described miniature guide float-valve and ADV differential float valve is approaching.
9. a kind of miniature guide float-valve as claimed in claim 2 is characterized in that described trapezoidal miniature guide float-valve, and two minor faces of valve gap differ 2 ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510122052 CN1792405A (en) | 2005-11-30 | 2005-11-30 | Miniature guide float-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510122052 CN1792405A (en) | 2005-11-30 | 2005-11-30 | Miniature guide float-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1792405A true CN1792405A (en) | 2006-06-28 |
Family
ID=36804174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510122052 Pending CN1792405A (en) | 2005-11-30 | 2005-11-30 | Miniature guide float-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1792405A (en) |
-
2005
- 2005-11-30 CN CN 200510122052 patent/CN1792405A/en active Pending
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |