CN2250795Y

CN2250795Y - Semi-conical float valve tray

Info

Publication number: CN2250795Y
Application number: CN 96227201
Authority: CN
Inventors: 段道顺; 梁治国; 田原宇; 亓荣彬; 赵景芳; 费卫峰
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 1996-02-07
Filing date: 1996-02-07
Publication date: 1997-04-02
Anticipated expiration: 2006-02-07

Abstract

The utility model provides a hemipyramid-shaped valve tray. The utility model which is improved on the basis of an HTV ship type valve tray reserves the structure of the HTV ship type valve tray, and the HTV ship type valve tray has the structure that a long bar is arranged, the HTV ship type valve tray is provided with two legs, and both sides of the HTV ship type valve tray are provided with flangings. A valve body is changed to a hemipyramid-shaped structure that one end of the valve body is large, and the other end is small, and the valve body on the large end is provided with a tongue-shaped guide hole. A trapezoidal valve hole is arranged on a tray. Compared with the original ship type valve tray, the hemipyramid-shaped valve tray arranged in the utility model has the advantages that pressure drop on a single plate is obviously reduced, back mixing on the plate is reduced, mass transfer efficiency for a cold mould is increased, processing ability is improved, an operating flexibility range is extended, and production quality is improved.

Description

The half-cone valve plate

The utility model relates to the valve plate in the separation equipment in a kind of chemical field.

Separation process is the important skill process of petrochemical industry and chemical industry, separation equipment be separation process core, divide by the inner parts structure characteristics, separation equipment mainly contains plate column and packed tower, and column plate is the critical component in the plate column.As far back as early sixties, China is just studied V1 type valve plate, this column plate can keep higher mass-transfer efficiency in the broad opereating specification, and can save metal consumption, improves single tower disposal ability, the very fast use that has just obtained applying through decades proves, there are many shortcomings in V1 type valve plate, as Yi Kafa, easily comes off, operating flexibility is big inadequately, and separating effect is good inadequately etc.At these shortcomings, University of Petroleum developed HTV ship type valve plate in 1985, and the structure of this column plate is similar to " hull ", is strip, band both legs, and the semi-canal type structure of two sideband flange.This column plate is in industrial application back proof, and its pressure drop is suitable with V1 type column plate, but its leakage and entrainment are all less than V1 type column plate, and significantly reduced vertical back-mixing, the cold rate height of imitating, disposal ability is big, and operating flexibility is big, do not block valve, do not come off, but prove through the commercial Application in 10 years, HTV ship type valve plate also comes with some shortcomings, mainly show: 1) gradient of liquid level is bigger, can cause vapor liquid maldistribution; 2) also there is to a certain degree back-mixing on the column plate plate face, reduced plate efficiency; 3) also there is the liquid stagnant area in the arcuate region of column plate both sides; 4) the veneer pressure drop also needs further to reduce; 5) float valve operational stability and open ratio of plate scope await further raising etc. on the column plate.

At above-mentioned shortcoming, the purpose of this utility model is that a kind of half-cone valve plate will be provided, and makes it can keep the efficient big flexible advantage of HTV ship type valve plate, can overcome above-mentioned shortcoming again.

The purpose of this utility model is to realize like this, keep the rectangular of HTV ship type valve plate, both legs, the structure of two sideband flange, it is little to change the semicanal shape of waiting radius into front end, the half-cone structure that the rear end is big, and separate the ligulate pilot hole in big end, valve opening on the column plate is changed into by rectangle trapezoidal, to increase operational stability.

Fig. 1 is the valve body schematic diagram of the half-cone valve plate that proposes according to the utility model;

Fig. 2 is the column plate schematic diagram of the half-cone valve plate that proposes according to the utility model.

Describe the concrete structure of the half-cone valve plate that proposes according to the utility model in detail below in conjunction with accompanying drawing.

As Fig. 1, the valve body structure of this valve plate is that an end is big, the half-cone structure that the other end is little, i.e. the radius difference of two ends circular arc.Two ends respectively have a

valve leg

2,3, and valve body 1 both sides have flange, have ligulate pilot hole 4 at the big end of valve body 1, and column plate 5 is rectangular metal plate (Fig. 2), have trapezoidal hole 6 in the middle of it, and

valve leg

2,3 is packed in the trapezoidal hole on the column plate 5.

Cold model experiment through system shows, valve plate veneer provided by the utility model pressure drop obviously reduces, back-mixing reduces on the plate, cold mould mass-transfer efficiency improves, illustrate and have good hydrodynamic performance and mass-transfer performance, and can improve disposal ability, and enlarge opereating specification, product quality is further improved.

Claims

1. a cross section is semicircle, and valve body is strip, two ends band valve leg, and the valve plate of two sideband flange is characterized in that, the radius difference of valve body 1 two ends arc is the little half-cone of the big other end of an end, has trapezoidal valve opening 6 on the column plate 5

2. valve plate according to claim 1 is characterized in that having ligulate pilot hole 4 on the big end of said valve body 1.