CN2408937Y

CN2408937Y - Double-place jetting guiding ladder-shaped float valve

Info

Publication number: CN2408937Y
Application number: CN 00204491
Authority: CN
Inventors: 王平
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2000-03-09
Filing date: 2000-03-09
Publication date: 2000-12-06
Anticipated expiration: 2010-03-09

Abstract

The utility model discloses a double-place jetting guide trapezoid-shaped float valve. The float valve is composed of a valve sheet and a valve leg, wherein, the valve sheet is an isosceles trapezoid plate sheet; the valve sheet is provided with a ventilation window; the two ends of the valve sheet fold the valve leg downwards; the valve leg on the long bottom side is a rectangular plate leg, and the short bottom side rectangular valve leg is provided with a ventilating hole. The trapezoid-shaped float valve with the structure is arranged on the tower tray to give strong driving force to the liquid on the tower tray, and furthermore, the liquid level fall is reduced, and the efficiency of the tower tray is enhanced.

Description

The trapezoidal float valve of guiding is sprayed at two places

The utility model relates to a kind of two place and sprays the trapezoidal float valve of guiding.It belongs to the float valve innovation of valve tower.

Valve tower has good operating flexibility and higher plate efficiency, has obtained extensive use in fields such as chemical industry, petroleum industry.The float valve that general valve tower uses is based on the F1 float valve.This float valve has the characteristics simple, stable operation of making.But owing to blow to from all directions from the gas of valve opening ejection, do not have a certain orientation, therefore cause on the column plate liquid dispersion violent, and can not overcome the liquid level drop on the column plate, want further to improve plate efficiency, F1 type float valve is powerless.For overcoming this weak point, in the last few years, people have released various novel float valves, as " trapezoidal float valve " (92243924.9), " two unsteady trapezoidal float valve tray " (94212353.0) with guide effect, these novel float valves are used on the large-scale column plate, and the effect that reduces liquid level drop is all arranged.But because the guiding pore just is opened on the valve block, its aperture area is limited, so liquid motive force on the column plate still is apparent not enough, liquid level drop still still influences the principal element that plate efficiency improves.

The purpose of this utility model is to provide a kind of two place to spray the trapezoidal float valve of guiding.This float valve is provided with fumarole at valve block, valve leg two places, has increased the motive force to liquid on the column plate, has effectively reduced even has eliminated liquid level drop substantially, thereby further improved plate efficiency.

In order to achieve the above object, the utility model is realized by following proposal.By valve block (1) and two valve legs (5), (6) the trapezoidal float valve of guiding is sprayed at the two places that constituted, its middle valve plate is an equicrural ladder plate, at least offer one on the plate and stick up mouthful a louver(-vre) (2) towards trapezoidal short base direction, four jiaos of places are shaped on decurved slightly little rectangle and take angle (3), take on two of short base and to be shaped on cover fillet (4) between the angle, two base ends bend valve leg (5) and (6) downwards, it is characterized in that: curved valve leg is a rectangular slab leg under the end of wide base, have sulculus near these both sides, valve plate leg bottom, end curved down valve leg in short base is a bottom to be had right-angle side and offers the rectangular slab leg of passage to excurvation.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation.

Fig. 2 is installed in the structural representation that is on the column plate under the full-gear for the utility model.

The utility model is to adopt 0.5～3mm steel plate through being stamped to form several times, as shown in Figure 1.The length of valve block (1) is generally at 20～300mm, and its short bottom width degree is 10～70mm, and long bottom width degree is 12～80mm, the opening length of louver(-vre) (2) is 5～70mm, A/F is 5～60mm, and open height is 2～5mm, can offer one or more louver(-vre)s on a valve block.Take angle (3) for four, each takes the angular length degree and width can be 3～20mm, slightly be bent downwardly, taking the angle minimum point is 0.5～3mm apart from the vertical range of valve block bottom surface, cover fillet (4) by with take the same or analogous mode bending in angle, extension elongation can be longer than and be taken angle 0～15mm, and two valve leg height are generally 20～50mm, and two legs launch highly contour.Like this float valve of said structure, according to short base main liquid flow path direction or constitute with main liquid flow path direction and be installed in the column plate valve opening on column plate less than 90 ° acute angle rule.The process that liquid is realized guiding and reduced liquid level drop is: when a certain amount of uprising gas of following one deck column plate during by valve opening, float valve is blown afloat, as shown in Figure 2, this moment, the passage of uprising gas had: the one, blow out from the passage of valve block two waist sides and valve opening formation, the 2nd, the louver(-vre) from valve block blows out, and the 3rd, blow out from short base valve leg passage.The gas that the former blows out has a component that blows to exit weir to column plate liquid, and both all are the active forces that liquid blowed to exit weir for the backs.Therefore under the effect of many power, reduced the thickness of liquid layer on the column plate, reduced the liquid level drop between column plate upper inlet weir and the exit weir, effectively prevented the back-mixing of liquid, thereby improved plate efficiency.

The utility model manufacturing is simple, installs easily, uses reliably, and maintenance is convenient, and column plate of the present utility model is installed, and uses In the gas-liquid mass transfer (contact) equipments such as rectifying, absorption, stripping, has the efficient height, the characteristics that operating flexibility is big.

Claims

1. the trapezoidal float valve of guiding is sprayed at two places, it is by valve block (1) and two valve legs (5), (6) constitute, its middle valve plate is an isosceles trapezoid, at least offer one on the valve block and stick up mouthful a louver(-vre) (2) towards short base direction, four jiaos of places are shaped on decurved slightly little rectangle respectively and take angle (3), take on two of short base and to be shaped on cover fillet (4) between the angle, two base ends bend valve leg (5) and (6) downwards, it is characterized in that: curved valve leg is a rectangular slab leg under the end of wide base, have sulculus near its both sides, bottom, curved valve leg is a bottom under the end of short base has right-angle side and offers the rectangular slab leg of passage to excurvation.