CN201572536U

CN201572536U - Wedge-shaped ultra-miniature guide float valve

Info

Publication number: CN201572536U
Application number: CN2010200034575U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-14
Filing date: 2010-01-14
Publication date: 2010-09-08
Anticipated expiration: 2020-01-14

Abstract

The utility model discloses a wedge-shaped ultra-miniature guide float valve used for a gas-liquid contact element in a plate type tower, which can be widely applied to mass transfer processes of oil, chemical industry, distillation, absorption and the like. The float valve is a trapezoid float valve formed by a valve surface and valve legs; a wedge-shaped projection is stamped on the valve surface of the trapezoid float valve; and slightly downward bent fixed distance nests are stamped at the edge positions of two long edges of the float valve to prevent adhesion and corrosion of the valve surface and a tower plate. The design of the float valve adopts special aerodynamic principle and has extremely strong gas and liquid flowing capacity. Simultaneously the valve surface with the wedge-shaped projection pushes gaseous phase to be inclined and flow downward to form extremely fine gas tightness, liquid is difficult to leak from a valve hole as long as a little gas flows through the float valve, and the float valve is particularly adaptable to work conditions with small liquid phase flow rate and large gaseous phase load. Compared with a common circular valve, a strip valve or a tongue hole tower plate, the wedge-shaped ultra-miniature guide float valve has the advantages of simple structure, reasonable design, large operation flexibility and fine separating effect.

Description

Wedge shape superminiature guide float-valve

Technical field

The utility model relate in the plate distillation column a kind of mass transfer component, a kind of miniature guide float-valve of more specifically saying so.

Background technology

Rectifying is the separation process of extensive use in the chemical industry, and plate distillation column then is the most basic, most important parts in the smart stream device.Current the most frequently used rectifiying plate mainly contains: sieve tray, valve plate and bubble cap plate.And since middle 1990s, frozen valve tray has also obtained using widely.

The most important advantage of sieve tray is a low cost of manufacture, if design properly, sieve tray also can obtain good mass-transfer efficiency, but the operating flexibility of sieve tray is little, easily produces problems such as leakage and liquid foam entrainment.

Compare with sieve tray, valve plate has bigger operating flexibility, however its manufacturing cost rise greatly, for overcoming this shortcoming, its size of float valve commonly used is all much bigger than sieve diameter, to reduce the quantity of float valve.Yet excessive float valve has suppressed the performance of float glass process column plate, and often sectional area is big, specific area is little because flow out the air-flow of single valve opening, and the area of gas-liquid contact just is little, so mass-transfer performance does not improve significantly than sieve tray.

In valve plate, most widely used is circular, rectangle float valve at present.Circular valve plate, because gas is by blowing out around the float valve, the phenomenon that liquidates that not only has gas between valve and the valve, and portion gas is opposite with the liquid flow path direction, increased the resistance of liquid flow on the column plate, thereby cause the increase of gradient of liquid level on the column plate, reduced the separative efficiency and the negotiability of column plate.Simultaneously and since when operation circular float valve rotation phenomenon, make valve leg serious wear to cause float valve to come off, thereby make the column plate can not normal running.For the rectangle float valve, though there is not the float valve obscission, but most of gas blows out along the both sides of float valve, only small part gas blows out from the targeting port of valve block, liquid flow there is certain impetus, but the phenomenon that liquidates of gas-liquid is serious, and the gas-liquid two-phase contact is seriously inhomogeneous, has influenced the further raising of the disposal ability of column plate.

Bubble cap plate is the most expensive mass transfer apparatus in all tower internals, though have advantages such as operating flexibility is big, nothing is leaked, the liquid-gas ratio scope is big, should not stop up, also has shortcomings such as pressure drop is big, efficient is low.So except some special systems, seldom adopt.

Summary of the invention

The utility model technical issues that need to address are to disclose a kind of miniature guide float-valve, to overcome the above-mentioned shortcoming that exists in the prior art.

For achieving the above object, the utility model is realized by some technical schemes: design a kind of superminiature guide float-valve, it is characterized in that described float valve comprises trapezoidal valve face and is arranged on the valve leg that valve face two ends and valve face join together, the valve face upper punch has the wedge shape projection, and float valve two length limit edges dash slightly reclinate spacing nest.

The beneficial effects of the utility model are:

1, the float valve size is less, has only 28-30mm long, and more much smaller than common round valve, bar valve size, little by the gas volume of single valve opening, specific area is big, has increased the area of gas-liquid contact, has improved mass-transfer efficiency.

2, the wedge shape projection on trapezoidal valve face and the valve face, it is most advanced and sophisticated consistent with the liquid flow path direction on the column plate, make gas by valve opening and fermentation have with column plate on the consistent vector of liquid flow path direction, has certain guide effect, effectively reduce the gradient of liquid level on the column plate, thereby improved the separative efficiency and the negotiability of column plate.

3, the wedge shape projection of valve face makes gas flow downward at the rear-inclined that stops that is subjected to valve face, is close to column plate and pours liquid layer, makes gas fully mix with liquid, has increased mass-transfer efficiency.Simultaneously, formed excellent airtightness, as long as seldom gas is arranged by this float valve, liquid just is difficult to leak down from valve opening, is specially adapted to little and the operating mode that the gas phase flow is big of liquid phase flow.

4, the spacing nest of valve face both sides can prevent adhesion of valve face and column plate and corrosion, guarantees simultaneously to form a quiet aperture between float valve and column plate, even also can carry out mass transfer under the minimum situation of tolerance.

Description of drawings

Fig. 1 is the stereogram of superminiature guide float-valve.

Fig. 2 is the stereogram of superminiature directional fixed valve.

Fig. 3 is the tower plate structure figure that the superminiature guide float-valve is installed.

(1) is the valve face of superminiature guide float-valve among Fig. 1, and (2) are the valve leg, and (3) are the wedge shape projection on the valve face, and (4) are the spacing nest of float valve, and (5) are column plate, and (6) are the valve opening on the column plate.

(7) are the valve face of superminiature directional fixed valve among Fig. 2, and (8) are the valve leg of standing valve, and (9) are the wedge shape projection on the valve face, and (10) are the valve opening on the column plate.

(11) are column plate among Fig. 3, and (12) for being installed in float valve or the standing valve on the tower tray, (13) are the liquid receiving area on the tower tray, and (14) are many flangings inclination downspout of tower tray, and (15) are downflow weir.

The specific embodiment

The present invention is further described below in conjunction with accompanying drawing:

As shown in Figure 1, corresponding wedge shape superminiature guide float-valve of each valve opening (6).Wedge shape superminiature guide float-valve is characterized in that this float valve by the trapezoidal float valve that valve face (1) and valve leg (2) constitute, has wedge shape projection (3) in trapezoidal valve face (1) upper punch.The liquid flow path direction is consistent on the tip of valve face (1) and wedge shape projection (3) and the column plate.Wedge shape superminiature guide float-valve is characterized in that described two valve legs lay respectively at two minor face places of trapezoidal valve face, and the Lift of float valve is 3-5mm.In actual use, can select the arrangement mode and the Lift of float valve according to gas-liquid phase load situation.Its length of valve face described in the utility model (1) is 28-30mm, and valve leg width 7.5mm is because the float valve size is little more a lot of than general circle or bar valve size, gas volume by single valve opening is little, specific area is big, has increased the area of gas-liquid contact, has improved mass-transfer efficiency.Dashing at the edge of float valve has slightly reclinate spacing nest (4), make valve face still have certain distance when static and between column plate, can prevent adhesion of valve face and column plate and corrosion, guarantee simultaneously between float valve and column plate to form a quiet aperture, even also can carry out mass transfer under the minimum situation of tolerance.

As shown in Figure 2, the utility model also can be used and frozen valve tray.The valve face of standing valve is similar to the valve face shape of float valve, and difference is that standing valve is directly punch forming from the column plate, and its thickness, material are identical with column plate, are applicable in the system that has corrosive deposit or solid particle polluter.Have anticorrosive preferably and performance of anti-blockage.

As shown in Figure 3, the utility model also can combine with many flangings inclination downspout and bubbling promoters and be applicable on the column plate.Many flangings inclination downspout has liquid communication ability height, gas-liquid separation effect is good, liquid initial is evenly distributed, save advantages such as active area, can solve the liquid phase dead-time problem that exists on the tower tray.The bubbling promoters is arranged along the downcomer outlet port place, can be solved the gas phase dead-time problem on the tower tray.The utility model combines with many flangings inclination downspout and bubbling promoters and is suitable for the separative efficiency and the flux that can improve tower tray greatly.

Claims

1. wedge shape superminiature guide float-valve that is used for the plate column float valve tray, it is characterized in that the trapezoidal float valve that this float valve is made of valve face (1) and valve leg (2), in trapezoidal valve face (1) upper punch wedge shape projection (3) is arranged, the liquid flow path direction is consistent on the tip of valve face (1) and wedge shape projection (3) and the column plate.

2. wedge shape superminiature guide float-valve according to claim 1 is characterized in that described two valve legs lay respectively at two minor face places of trapezoidal valve face.

3. wedge shape superminiature guide float-valve according to claim 1 is characterized in that its length of described valve face (1) is 28-30mm, valve leg (2) width 7.5mm.

4. wedge shape superminiature guide float-valve according to claim 1 is characterized in that also can be used for frozen valve tray.

5. wedge shape superminiature guide float-valve according to claim 1 is characterized in that and can be used in combination on column plate with many flangings inclination downspout and bubbling promoters.