CN219984321U - High-efficient direction float valve column plate - Google Patents

Abstract

The utility model discloses a high-efficiency guide float valve tray, which comprises a tray, wherein a plurality of mounting holes are formed in the tray, the tray also comprises a plurality of float valves, guide float valves and self-distributing downcomers, the float valves, the guide float valves and the self-distributing downcomers are all arranged in the mounting holes, the guide float valves are arranged in the mounting holes on two sides of the tray, the self-distributing downcomers are arranged in the mounting holes in the center of the tray, the float valves are arranged between the guide float valves and the self-distributing downcomers, valve covers capable of floating up and down are arranged on the float valves and the guide float valves, and valve legs are fixedly connected to the bottoms of the valve covers; the front valve leg of the guide float valve is provided with an air guide hole, a small amount of air sprayed from the air guide hole pushes the liquid on the tray to flow, so that the liquid level gradient on the tray can be obviously reduced or even completely eliminated, and the guide float valve with the guide hole is arranged in a plurality of proportions at the arched parts at the two ends of the tray, so that the liquid flow in the area can be accelerated, and the liquid stagnation area on the tray can be eliminated.

Description

High-efficient direction float valve column plate

Technical Field

The utility model belongs to the technical field of petrochemical industry, and particularly relates to a high-efficiency guiding float valve tower plate.

Background

The valve tray is one of the most important equipments in chemical industry, oil refining and medical production, and has wide application in industry. The device can make gas (gas) and liquid phases closely contacted, achieves the aim of phase mass transfer and heat transfer, and common unit operations which can be completed in the tower include mass transfer operations such as rectification, absorption, desorption and the like.

The common float valve tower plate has higher liquid level at the inlet end of the tower plate, and the float valve has larger liquid leakage in the area and is difficult to form effective bubbling, so that the pressure drop of the tower plate is increased and the efficiency of the tower plate is reduced; the traditional float valve is in line contact with a valve hole plate, and the float valve can be opened only when the gas overcomes the large interfacial tension; under the traditional downcomer, the tray is left with impact of liquid from the liquid tray, and the area cannot be provided with a float valve, so that the bubbling area of the tray is reduced, and the treatment capacity of the tray is further affected.

Accordingly, the present utility model provides a guided valve tray having efficient throughput.

Disclosure of Invention

In view of the above-mentioned problems with the background art, the present utility model has as its object: aims at providing a high-efficiency guiding float valve column plate.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a high-efficient direction float valve column plate, includes the column plate dish, be equipped with the mounting hole of a plurality of numbers on the column plate dish, still include float valve, direction float valve and the self-distributing downcomer of a plurality of numbers, float valve, direction float valve and self-distributing downcomer all set up in the mounting hole, the direction float valve sets up in the mounting hole of column plate dish both sides, the self-distributing downcomer sets up in the mounting hole in column plate dish center, the float valve sets up between direction float valve and self-distributing downcomer, be equipped with the valve gap that can float from top to bottom on float valve and the direction float valve, valve gap bottom fixedly connected with valve leg.

Further limiting, grooves are formed in two sides of the valve cover of the floating valve and the valve cover of the guiding floating valve, and through the structural design, air flow is easier to pass through by arranging the grooves in two sides of the valve cover, when smaller air flow is in the tower, the floating valve has a certain opening at the moment, so that air and liquid on the floating valve can be uniformly bubbled, and the floating valve is prevented from being stuck to the tray plate.

Further limited, the recess is triangle-shaped, wave or rectangle, and such structural design through setting up the recess as triangle-shaped, wave line or rectangle, relies on the effect of tooth limit, makes the air current more pass through the float valve, makes float valve and direction float valve easier to open simultaneously.

Further, the front end valve leg of the guide float valve is provided with an air vent, so that in actual use, the opening direction of the air vent is consistent with the liquid flow direction on the tray plate, a small amount of air sprayed from the air vent pushes the liquid on the tray plate to flow, so that the liquid level gradient on the tray plate can be obviously reduced or even completely eliminated, most of air flows out from two sides of the guide float valve, the air outflow direction is perpendicular to the liquid flowing direction in the tray plate, the liquid mixing and returning phenomenon on the guide float valve is very rare, and it is worth noting that the guide float valve is arranged in a large proportion on the arched parts at two ends of the tray plate by arranging the air vent, so that the liquid flow of the two side areas can be accelerated, and the liquid stagnation areas of the two side areas on the tray plate are eliminated.

Further, a plurality of holes are formed in the bottom of the self-distribution downcomer, the holes are round, rectangular or oval, and the self-distribution downcomer is a liquid channel between an upper tray and a lower tray, and because foam liquid with higher gas content enters the downcomer, the downcomer needs to bear the task of gas-liquid separation, so that the downcomer must have enough cross-sectional area and volume, the holes in the bottom of the self-distribution downcomer are round, rectangular or oval, when the liquid passes through the section of the tower, the liquid back mixing is less, the passing efficiency is high, the gas bubbling is uniform, and the large-flow tower diameter can be fully adapted.

The utility model has the beneficial effects that: according to the utility model, the float valve and the guide float valve are arranged on the tray plate, the front end valve leg of the guide float valve is provided with the air guide hole by virtue of the driving force and proper proportion of the float valve and the guide float valve, and a small amount of air sprayed from the air guide hole drives the liquid on the tray plate to flow, so that the liquid level gradient on the tray plate can be obviously reduced or even completely eliminated, the guide float valve with the guide holes is increased in proportion in the areas on two sides of the tray plate, the liquid flow in the area can be accelerated, and the liquid stagnation area on the tray plate can be eliminated;

meanwhile, by means of triangular, wavy or rectangular grooves formed in two sides of the valve cover of the floating valve and the guide floating valve, air flow is easier to pass through the floating valve and the guide floating valve, the floating valve is prevented from being stuck to the tray, and the operation elasticity of the tray is improved; the self-distribution downcomer arranged on the tray plate can reduce the liquid area on the tray plate, improve the bubbling area, increase the tray plate opening rate and improve the overall working efficiency.

Drawings

The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;

FIG. 1 is a front view of an embodiment of a high efficiency pilot valve tray of the present utility model;

FIG. 2 is a top view of an embodiment of a high efficiency pilot float valve tray of the present utility model;

FIG. 3 is a schematic view of the structure of a float valve 2 according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a pilot float valve 3 according to an embodiment of the present utility model;

FIG. 5 is a top view of a self-distributing downcomer 4 of one embodiment of a high efficiency guiding valve tray of the present utility model;

FIG. 6 is a front view of a groove 5 of one embodiment of a high efficiency pilot valve tray of the present utility model;

FIG. 7 is a front view of an air vent 6 of one embodiment of a high efficiency pilot valve tray of the present utility model;

the main reference numerals are as follows: tray deck 1, float valve 2, guide float valve 3, self-distributing downcomer 4, recess 5, air vent 6, valve leg 7, valve gap 8.

Detailed Description

In order that those skilled in the art will better understand the present utility model, the following technical scheme of the present utility model will be further described with reference to the accompanying drawings and examples.

As shown in figures 1-7, the high-efficiency guiding float valve tray comprises a tray 1, a plurality of mounting holes are arranged on the tray 1, the high-efficiency guiding float valve tray also comprises a plurality of float valves 2, guiding float valves 3 and self-distributing downcomers 4, the float valves 2, the guiding float valves 3 and the self-distributing downcomers 4 are all arranged in the mounting holes, the guide float valve 3 is arranged in the mounting holes on two sides of the tray plate 1, the self-distributing downcomer 4 is arranged in the mounting hole in the center of the tray plate 1, the float valve 2 is arranged between the guide float valve 3 and the self-distributing downcomer 4, the float valve 2 and the guide float valve 3 are provided with valve covers 8 which can float up and down, and valve legs 7 are welded at the bottoms of the valve covers 8.

The utility model relates to a mounting notice and a working principle of a high-efficiency guide float valve tower plate, which are as follows:

the floating valve 2 and the guide floating valve 3 are formed by punching stainless steel plates, two valve legs 7 at the bottoms of the floating valve 2 and the guide floating valve 3 are embedded into mounting holes of the tray plate 1, then the tail ends of the valve legs 7 are twisted by 90 degrees by using tools, so that the floating valve 2 and the guide floating valve 3 are limited in the mounting holes, the floating valve 2 and the guide floating valve 3 can only move up and down and cannot fall off the tray plate 1, when the gas flow rate is high, the floating valve 2 and the guide floating valve 3 are blown up, the valve plate is lifted up by the valve holes, the gas is ejected in the horizontal direction, when the gas flow rate passes through a liquid layer, the gas-liquid two-phase foam state is used for heat and mass transfer, and when the gas flow rate is low, the dynamic pressure of the gas is smaller than the dead weight of the floating valve 2 and the guide floating valve 3, and then the floating valve 2 and the guide floating valve 3 fall down, and the valve plate can be automatically reduced under the action of gravity when the gas flow rate is low, so that leakage is reduced;

it should be noted that under certain conditions of gas-liquid load and tower diameter, the entrainment is large if the spacing between the tray plates 1 is small, and the entrainment is reduced if the spacing between the tray plates is properly increased, but any system has a maximum tray plate 1 spacing corresponding to the maximum tray plate spacing at a certain allowable empty tower speed, beyond which the entrainment is not reduced with the increase of the spacing, so that the excessive tray plate 1 spacing is unnecessary and uneconomical;

when the space between the tray plates 1 is required to be determined during installation, the space required for installing and overhauling the tray plates 1 is also required to be considered, for example, the space between the tray plates 1 is not less than 0.6m in a place with a manhole, so that the size of the space between the tray plates 1 is closely related to the processing capacity, the operation elasticity and the efficiency of the tray plates 1 and is closely related to the size of the tower diameter, and generally, a higher overhead tower speed can be adopted for the larger space between the tray plates 1, so that a smaller tower diameter can be selected under certain production capacity and operation conditions, but the tower height is increased; for columns having a large number of tray trays 1 or being placed in a room, it is conceivable to use smaller tray 1 pitches, and to appropriately increase the column diameter so as to reduce the column height.

Preferably, the recess 5 is offered to the valve gap 8 both sides of float valve 2 and direction float valve 3, and such structural design makes the air current more easily pass through setting up recess 5 in valve gap 8 both sides, when being in less air current in the tower, and float valve 2 still has certain aperture this moment, makes gaseous and the liquid on the float valve 2 bubble uniformly, avoids float valve 2 and tray dish 1 to stick.

Preferably, the groove 5 is triangular, wavy or rectangular, and by arranging the groove 5 as triangular, wavy or rectangular, the air flow is easier to pass through the float valve 2 by virtue of the action of the tooth edge, and the float valve 2 and the guide float valve 3 are easier to open. In practice, the recess 5 can also be designed to have other shapes, depending on the particular circumstances.

Preferably, the front end valve leg 7 of the guiding float valve 3 is provided with an air vent 6, and in practical use, the opening direction of the air vent 6 is consistent with the liquid flow direction on the tray plate 1, a small amount of air sprayed from the air vent 6 pushes the liquid on the tray plate 1 to flow, so that the gradient of the liquid level on the tray plate 1 can be obviously reduced or even completely eliminated, the air flows out from two sides of the guiding float valve 3, and the direction of the air flow is perpendicular to the direction of the liquid flowing in the tray plate 1, therefore, the liquid mixing phenomenon on the guiding float valve 3 is very rare, and it is worth noting that the opening of the air vent 6 on the front end valve leg 7 of the guiding float valve 3 can also accelerate the liquid flow in the two side areas, so that the liquid stagnation areas in the two side areas on the tray plate 1 are eliminated. The number of air-guide holes 6 can actually be taken into account in particular according to the specific circumstances.

Preferably, the bottom of the self-distribution downcomer 4 is provided with a plurality of holes, the holes are round, rectangular or oval, and the self-distribution downcomer 4 is a liquid channel between an upper tray and a lower tray, and because foam liquid with higher gas content enters the downcomer, the self-distribution downcomer 4 needs to carry the task of gas-liquid separation, therefore, the self-distribution downcomer 4 must have enough cross section area and volume, the holes at the bottom of the self-distribution downcomer 4 are round, rectangular or oval, when the liquid passes through the cross section of the tower, the liquid back mixing is less, the passing efficiency is high, the gas bubbling is uniform, and the self-distribution downcomer 4 can fully adapt to the tower diameter with large flow. In practice, the holes formed in the bottom of the respective downcomers 4 may be designed in other shapes, depending on the particular circumstances.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims of this utility model, which are within the skill of those skilled in the art, can be made without departing from the spirit and scope of the utility model disclosed herein.

Claims (5)

1. The utility model provides a high-efficient direction float valve column plate, includes column plate dish (1), be equipped with the mounting hole of a plurality of numbers on column plate dish (1), its characterized in that: still include float valve (2), direction float valve (3) and from distributing downcomer (4) of a plurality of, float valve (2), direction float valve (3) and from distributing downcomer (4) all set up in the mounting hole, direction float valve (3) set up in the mounting hole of tray dish (1) both sides, from distributing downcomer (4) set up in the mounting hole at tray dish (1) center, float valve (2) set up between direction float valve (3) and from distributing downcomer (4), be equipped with valve gap (8) that can float from top to bottom on float valve (2) and the direction float valve (3), valve gap (8) bottom fixedly connected with valve leg (7).

2. The high efficiency pilot valve tray of claim 1, wherein: grooves (5) are formed in two sides of the floating valve (2) and the valve cover (8) of the guide floating valve (3).

3. The high efficiency pilot valve tray of claim 2, wherein: the grooves (5) are triangular, wavy or rectangular.

4. The high efficiency pilot valve tray of claim 1, wherein: an air guide hole (6) is formed in the front end valve leg (7) of the guide float valve (3).

5. The high efficiency pilot valve tray of claim 1, wherein: a plurality of holes are formed in the bottom of the self-distribution downcomer (4), and the holes are round, rectangular or elliptical.