CN2357792Y

CN2357792Y - Oval float valve

Info

Publication number: CN2357792Y
Application number: CN 99225387
Authority: CN
Inventors: 王崇智; 李航胜; 傅春敏; 沐水清; 褚雅志
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-12
Filing date: 1999-01-12
Publication date: 2000-01-12
Anticipated expiration: 2009-01-12

Abstract

The utility model discloses a novel oval float valve which comprises a valve port on a column plate and a valve body on the valve port, wherein the valve body is composed of a cap plate and two valve legs which are inserted into the valve port, and the valve port and the cap plate are in the oval shape. The oval of the valve port and the cap plate is composed of two semi-ovals with same short axes and different long axes. The edge of the cap plate is provided with saw teeth, and the plane composed of the saw teeth is inclined downwards. The utility model combines the advantages of a sliver-shaped float valve and a round float valve, the machinery intensity is enhanced, and the efficiency of mass transferring is enhanced.

Description

Novel oval float valve

The utility model relates to the float valve on the rectifying column column plate in a kind of petrochemical industry separation engineering.

In the prior art, float valve class column plate is with its operating flexibility, higher plate efficiency, bigger disposal ability and become one of current most important plate column internals preferably.Form by structure, float valve can be divided into strip and circular two big classes basically, though the strip float valve has bigger percent opening, but on its column plate owing to the valve opening of having offered strip causes mechanical strength relatively poor, particularly can concentrate by formation stress on four of valve opening angles, cause the mechanical failure of column plate easily, thereby shortened the service life of column plate; Circular float valve relatively simple for structure, because the valve opening of being offered on column plate is for circular, make column plate have higher mechanical strength, but its percent opening is lower, the circular float valve valve body that uses rotation easily in valve opening at present, cause the damage of wasting of limiting component, cause valve body finally to come off, in addition, the gas that ejects from valve opening to all the winds flows, cause the liquid on the column plate that bigger back-mixing is arranged, reduce the mass-transfer efficiency of column plate.

The purpose of this utility model is: a kind of novel oval float valve is provided, and it improves the structure of existing strip float valve and circular float valve, combines the advantage of strip float valve and circular float valve, has increased mechanical strength, has improved mass-transfer efficiency.

The technical solution of the utility model is: a kind of novel oval float valve, comprise the valve opening on the column plate, and the valve body on the valve opening, valve body is formed described valve opening and cover plate ovalize by cover plate and two valve legs that stretch in the valve opening.

The further technical scheme of the utility model is: a kind of novel oval float valve, comprise the valve opening on the column plate, and the valve body on the valve opening, valve body is formed described valve opening and cover plate ovalize by cover plate and two valve legs that stretch in the valve opening; The semiellipse that two minor axises of the ellipse of described valve opening and cover plate equate, major axis does not wait combines.

The more perfect technical scheme of the utility model is: a kind of novel oval float valve, comprise the valve opening on the column plate, and the valve body on the valve opening, valve body is formed described valve opening and cover plate ovalize by cover plate and two valve legs that stretch in the valve opening; The semiellipse that two minor axises of the ellipse of described valve opening and cover plate equate, major axis does not wait combines; The edge of described cover plate is provided with sawtooth; The plane that described sawtooth is formed is downward-sloping.

The utility model has the advantages that:

1. float valve ovalize of the present utility model, and combine by two semiellipses, making float valve open rear valve body has certain gradient, and the gas that blows out from valve opening can directed flow, and simultaneously, the liquid that promotes on the column plate is made directed flow.

2. the edge owing to valve body cover plate in the utility model is provided with sawtooth, thereby has increased the surface of gas-liquid contact, has reduced entrainment simultaneously, and the downward-sloping certain angle in sawtooth plane, and the unlatching resistance of valve body is reduced greatly.

3. the utility model has been inherited the high characteristics of rectangular valve open ratio of plate, increased the percent opening of column plate, mass-transfer efficiency is increased, the higher characteristics of rectangular valve mechanical strength have been inherited, guarantee the mechanical strength of float valve limiting component, inherit the higher characteristics of circular valve plate mechanical strength, guaranteed the mechanical strength of column plate.

The utility model will be further described below in conjunction with drawings and Examples:

Fig. 1 is the vertical view of valve body;

Fig. 2 is the vertical view of valve opening;

Fig. 3 is the I view of bowing of Fig. 1;

Fig. 4 is the left view of Fig. 1;

Wherein: 1 column plate; 2 valve openings; 3 valve bodies; 4 cover plates; 5 valve legs; 6 sawtooth.

Embodiment: as shown in the figure, a kind of novel oval float valve comprises the valve opening [2] on the column plate [1], the valve body [3] on the valve opening [2], and valve body [3] is formed described valve opening [2] and cover plate [4] ovalize by cover plate [4] and two valve legs [5] of stretching in the valve opening [2]; The semiellipse that two minor axises of the ellipse of described valve opening [2] and cover plate [4] equate, major axis does not wait combines; The edge of described cover plate [4] is provided with sawtooth [6]; The plane that described sawtooth [6] is formed is downward-sloping.Float valve cover plate of the present utility model is combined by two major axis differences, ellipse that minor axis is identical, make the gas that from valve opening, ejects that orientation can be arranged, the liquid that promotes on the column plate is also made directed flow, and the back-mixing that especially can reduce liquid in the column plate arcuate region flows; The utility model has increased the serrated edge wing on the valve body cover plate, not only reduced entrainment, can also improve the vapour-liquid of column plate and disperse and phase contact area, makes vapour-liquid contact and dispersion more abundant, thereby has improved mass-transfer efficiency greatly; The utility model adopts higher percent opening to reduce dry-plate pressure drop, and the total plate pressure drop behind the float valve standard-sized sheet reduces significantly, has improved the liquid phase disposal ability of downspout; The utility model has improved mass-transfer efficiency when improving treating capacity.

Claims

1. a novel oval float valve comprises the valve opening [2] on the column plate [1], the valve body [3] on the valve opening [2], and valve body [3] is made up of cover plate [4] and two valve legs [5] of stretching in the valve opening [2], it is characterized in that: described valve opening [2] and cover plate [4] ovalize.

2. novel oval float valve according to claim 1 is characterized in that: the semiellipse that two minor axises of ellipse of described valve opening [2] and cover plate [4] equate, major axis does not wait combines.

3. novel oval float valve according to claim 1 is characterized in that: the edge of described cover plate [4] is provided with sawtooth [6].

4. novel oval float valve according to claim 3 is characterized in that: the plane that described sawtooth [6] is formed is downward-sloping.