CN211935650U

CN211935650U - High-flux float valve tower

Info

Publication number: CN211935650U
Application number: CN201922456064.3U
Authority: CN
Inventors: 刘伟; 鲁宽华; 楚耀宗
Original assignee: Individual
Current assignee: Changsha Boneng Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-17
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a high flux floating valve tower, including floating valve column plate and downcomer, be provided with the valve opening on the floating valve column plate, the floating valve that can float from top to bottom in the valve opening, the floating valve includes that the both ends are little big in the middle of, be streamlined hexagon structure's valve block, both ends are provided with the valve leg that the width is less than valve block both ends width respectively about the valve block, the left valve leg that is located the valve block left end is rectangle, it has the slot breach to open on the right valve leg that is located the valve block right-hand member, the tip of right valve leg is equipped with a pair of valve foot, the center department of right valve leg is provided with circular shape guiding hole, valve block surface center department is provided with several and is the several uplift that the rhombus distributes, the side of uplift is opened has triangular opening, have the throughput big, separation; its operating characteristic is obviously superior to the float valve tower of the same type, promotes in industrial application the utility model discloses a high flux float valve tower will improve the throughput and the separation efficiency of whole device greatly, can obtain obvious economic benefits.

Description

High-flux float valve tower

Technical Field

The utility model relates to a float valve tower, concretely relates to high flux float valve tower.

Background

The float valve tower plate has good operation elasticity and higher tower plate efficiency, and has wider application in the field of petrochemical mass transfer separation. The float valve trays commonly used in the industry at present mainly comprise F1 trays (round valves, valve covers and valve holes are round), and guide float valves (for example, combined guide float valves, valve covers and valve holes are rectangular or trapezoidal). In long-term industrial applications, F1 round valves were found to have the following drawbacks:

f1 float valve tower plate has no guide function, the liquid level gradient of the tower plate is larger, the gas-liquid contact is uneven, the local leakage of the tower plate is easy to cause under low load, the pressure drop is increased, and the mass transfer efficiency of the tower plate is influenced; for the F1 floating valve tray, because the valve hole is circular, the gas blows out from the round hole, there is the phenomenon of opposite impact between valve and the valve, and the liquid that part blows out is opposite with the liquid flow direction, form the liquid backmixing, reduce the tray efficiency; the valve leg of the F1 float valve is rotary and is easy to fall off due to abrasion in operation, so that the normal operation of the float valve tower is influenced; there is a liquid stagnant zone in the arcuate zones on both sides of the tray where the liquid flows without main body, and the gas phase composition passing through the stagnant zone hardly changes, so that the tray efficiency is lowered.

The guide strip-shaped float valve is widely applied in the chemical industry in recent years, such as a combined guide float valve which is formed by combining a rectangular float valve and a trapezoidal float valve according to a certain proportion. Compared with the F1 float valve, the valve cover is provided with a guide hole with a guide function, and the flow of fluid and the gas-liquid contact of the float valve tray are improved by the coordinated arrangement of the rectangular float valve and the trapezoidal float valve on the tray. Because the valve hole is rectangular or trapezoidal, the direction of gas blowing out and the direction of the liquid flowing square form an angle less than 90 degrees, and the existence of liquid back mixing on the tower plate is avoided. The float valve is fixed on the column plate and does not rotate, so that the service life of the float valve is prolonged. However, the following disadvantages also exist in industrial applications:

the combined guide floating valve tower plate consists of two different floating valves, so that the processing difficulty and the material consumption are increased, and the installation difficulty of the floating valves is increased; only one guide hole is formed in the valve plate of the guide floating valve, the utilization rate of a mass transfer space above the valve plate is low, gas-liquid contact is insufficient, and further improvement of the efficiency of the tower plate is not facilitated; the two ends of the valve plate are provided with the sheet valve legs like a baffle plate, so that the outflow of gas is blocked, the pressure drop of the column plate is increased, and the increase of the treatment capacity of the column plate of the float valve is limited; the trapezoidal float valve leg easily causes float valve jam, can't start in a flexible way, especially when the column plate is carbon steel, because of the column plate rusts can cause the float valve card to die, influences normal operating.

With the development of industrialization, high-throughput and high-efficiency valve trays are required in production. The float valve tower consists of float valve tower plate, liquid receiving disc, down-flow pipe, etc. and the treating capacity of the tower is determined by the opening rate and the width of the down-flow pipe. In the design process of the tower plate, the tower diameter is limited, so that the opening rate is insufficient, the width of the downcomer is insufficient, and finally the design of the tower plate is not ideal. Under the condition that the operation condition and the tower diameter are determined, particularly for a modified device, how to improve the processing capacity to the maximum extent becomes a bottleneck for expanding and modifying a chemical device. To solve this problem, it is necessary to develop high-throughput trays and rational design methods. A good internal part design method can utilize the processing capacity of the tower plate to the maximum extent. For example, how to increase the maximum opening rate of the valve, how to increase the throughput of the downcomer, etc.

SUMMERY OF THE UTILITY MODEL

In the design process of the float valve tower plate, how to increase the aperture ratio of the float valve and the flow capacity of the downcomer so as to improve the processing capacity of the float valve tower becomes the key of the design of the float valve tower plate. In the float valve tower, fluid carries out gas-liquid contact through each float valve, and the arrangement of float valve will be the key of mass transfer, in order to avoid the mutual interference between float valve and the float valve, need reasonable valve interval between float valve and the float valve usually, valve interval is too little, though can improve the aperture ratio, mutual interference between valve and the valve is unfavorable for the normal operation of column plate. The utility model provides a high flux float valve tower is under same valve interval condition, increases the percent opening of valve, improves the throughput of column plate.

The downcomer mainly improves the liquid phase processing capacity of the tower plate by increasing the width of the downcomer, but is often influenced by the opening rate, and the width of the downcomer cannot meet the requirement; traditional downcomer is arc shape, the utility model provides a high flux float valve tower adopts the symmetry to set up, has the irregularly shaped downcomer of hem under the unchangeable condition of downcomer width, increases the throughput of downcomer to improve the throughput of float valve tower.

The utility model provides a high flux floating valve tower, including the column plate that has the valve opening and installing the floating valve in the valve opening, the floating valve includes the valve block, and the valve block is the streamlined structure of hexagon, and the little centre in both ends is big, under the condition of equal floating valve interval for whole column plate has great trompil area, has increased the throughput of column plate. The floating valve comprises a strip-shaped valve plate, a left valve leg and a right valve leg which are connected with the lower portion of the valve plate into a whole, a plurality of triangular holes are formed in the upper portion of the valve plate, a gas-liquid contact channel is provided, and a mass transfer space above the valve plate is utilized to the maximum extent. The left end and the right end of the valve plate are respectively provided with a valve leg with the width smaller than that of the two ends of the valve plate, and the width of the valve leg is greatly reduced compared with that of the combined guide floating valve, so that gas can flow out of the two ends of the valve plate, the gas passage area is increased, and the treatment capacity of the tower plate is increased. When the valve is installed, the floating valve is arranged in the valve hole, then the valve leg is straightened, and the valve leg is matched with the valve foot, and meanwhile, the parts, which are not connected with the left and right valve legs, at the two ends of the valve plate are respectively bent downwards by a certain angle, so that the floating valve can be fixed on the tower plate in a floating manner. The float valve floats up and down flexibly according to the air flow and does not rotate. In the float valve column plate, the column plate is divided into a plurality of small blocks which are connected through bolts, and the connection part of the column plate and the column plate is reasonably arranged and is provided with a certain number of valve holes and float valves, so that the processing capacity of the column plate is increased. The float valve tower plate positioned between the valve holes is provided with a plurality of guide sieve holes, and the guide sieve holes are consistent with the liquid flowing direction on the surface of the float valve tower plate, so that the liquid level gradient on the surface of the tower plate can be eliminated, and the aperture ratio of the tower plate can be increased.

Compared with the prior art, the utility model provides a pair of high flux float valve tower has following advantage:

1. the valve block is hexagonal streamline structure, and the middle is big in the little of both ends, under the condition of equal float valve interval for whole float valve column plate has great trompil area, has increased the throughput of float valve column plate.

2. Compare with combination direction float valve column plate, the utility model provides a high flux float valve tower only adopts a float valve, nevertheless has the efficiency of combination direction float valve column plate, has advantages such as processing is simple, and the consumptive material is economized.

3. The width of the valve leg is reduced, and the right valve leg is provided with the circular guide hole, so that gas can flow out from the front end of the valve plate in the same direction as liquid flow, the area of a gas channel is increased, and the pressure drop of a floating valve tower plate is reduced.

4. The float valve column plate is formed by splicing a plurality of small float valve column plates, and the small float valve column plates are connected through bolts, so that the aperture ratio of the whole float valve column plate can be increased, and the treatment capacity of the float valve column plate is improved.

5. The triangular hole is formed above the valve block, so that the mass transfer space above the valve block is improved, the mass transfer area is larger, and the mass transfer efficiency is higher.

6. On the float valve column plate between the valve plate gaps, the guide sieve holes are added, so that the purpose of increasing the aperture ratio of the float valve column plate is achieved, the liquid guide effect can be achieved, and the liquid level gradient of the float valve column plate is reduced.

7. The downcomer with irregular structure is adopted, and the flux of the whole float valve tower plate is increased.

8. Compare with traditional float valve tower, the utility model provides a float valve column plate in high flux float valve tower has advantages such as the percent opening is high, throughput is big, processing is simple, long service life.

To sum up, the utility model provides a pair of high flux float valve tower has advantages such as throughput is big, separation efficiency is high, operation elasticity is big. Its operating characteristic is obviously superior to the float valve tower of the same type, promotes in industrial application the utility model provides a high flux float valve tower will improve the throughput and the separation efficiency of whole device greatly, can obtain obvious economic benefits.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the float valve of the present invention;

fig. 3 is a schematic side view of the float valve assembly of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1-3, for convenience of description, the references of "up", "down", "left", "right", "front" and "rear" directions in the present invention are based on the directions shown in fig. 2;

the utility model provides a high flux floating valve tower, including floating valve column plate 4 and downcomer 1, be provided with valve opening 5 on the floating valve column plate 4, what can float about in the valve opening 5 is provided with floating valve 3, floating valve 3 includes that the both ends are little middle big, be streamlined hexagon structure's valve block 31, both ends are provided with the valve leg that the width is less than valve block both ends width respectively about the valve block 31, the left valve leg 31 that is located the valve block 3 left end is rectangle, it has slot breach 37 to open on the right valve leg 34 that is located the valve block 3 right-hand member, the tip of right valve leg 34 is equipped with a pair of valve foot 35, the center department of right valve leg 34 is provided with circular shape guiding hole 36, valve block 31 surface center department is provided with several uplift 33 that the several is rhombus and distributes, the side of uplift 33.

Preferably, the parts of the two ends of the valve plate 31 which are not connected with the left and right valve legs are respectively bent downwards by a certain angle, so that the minimum opening between the float valve 3 and the float valve tower plate 4 is ensured to be 2-3 mm;

preferably, the float valve tower plate 4 is formed by splicing a plurality of small float valve tower plates, and the small float valve tower plates 4 are connected through bolts.

Preferably, the connection between the valve trays 4 of the small blocks is provided with a valve hole 5 and a floating valve 3 respectively.

Preferably, a plurality of guide sieve holes 2 are arranged on the float valve tray 4 positioned between the plurality of valve holes 5, and the guide sieve holes 2 are consistent with the flowing direction of the liquid on the surface of the float valve tray 4.

Preferably, the downcomer 1 is a symmetrically arranged irregular downcomer 1 with folded edges;

the utility model provides a high flux float valve tower, which comprises a float valve tower plate 4 with a valve hole 5 and a float valve 3 arranged in the valve hole 5; the float valve tower plate 4 is punched by a steel plate with the thickness of 3-4mm, and the float valve 3 is punched by a thin plate with the thickness of 1.5-2 mm.

Wherein, the expansion length of the float valve 3 is 50-120mm, the width is 20-50mm, the length of the left and right valve legs is 10-30mm, and the width is 3-30 mm;

the float valve 3 is provided with 2 valve legs, and the float valve 3 can float up and down along with the change of air flow in operation without rotating and can be freely opened by bending and positioning the valve legs;

the float valves 3 are in a streamline structure with two small ends and a large middle, and are arranged on the float valve tower plate 4 at a certain valve interval. The minimum valve spacing in the flow direction and perpendicular to the flow direction was 160mm and 80mm, respectively.

A certain number of guide sieve holes 2 are arranged between adjacent valve holes 5 on the float valve tower plate 4 and at positions close to the tower wall, so that the direction of the air flow is consistent with that of the liquid flow, and the liquid is pushed.

The triangular through hole 38 on the valve plate 31 has a height of 2-5mm, a rectangular hole at the bottom, a length of 10-20mm and a width of 2-10 mm.

The chord length of the traditional downcomer is a straight edge, and the downcomer 1 of the irregular shape is symmetrically arranged and provided with the folded edge, compared with the traditional downcomer, the chord length is increased, the liquid layer thickness of the float valve tray 4 is reduced, and the processing capacity of the float valve tray 4 is increased.

During installation, the direction of air flow blown out by the guide sieve holes 2 is consistent with the flowing direction of liquid, the floating valve 3 is arranged in the valve hole 5, then the left valve leg 32 and the right valve leg 34 are straightened respectively, and the floating valve 3 can be fixed on the floating valve tower plate 4 through the matching of the valve legs and the valve feet 35. The float valve 3 flexibly floats up and down according to the air volume and does not rotate.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a high flux floating valve tower, includes floating valve column plate and downcomer, its characterized in that, be provided with the valve opening on the floating valve column plate, but the floating valve that is provided with of fluctuation in the valve opening, the floating valve includes that the middle big, the valve block that is streamlined hexagon structure in the middle of the little two, both ends are provided with the width respectively and are less than about the valve block the valve leg of valve block both ends width is located the left valve leg of valve block left end is rectangle, is located it has the slot breach to open on the right valve leg of valve block right-hand member, the tip of right valve leg is equipped with a pair of valve foot, the center department of right valve leg is provided with the circular shape guiding hole, valve block surface center department is provided with the several uplift that the several is rhombus and distributes, the side of uplift is opened has.

2. The high-flux float valve tower of claim 1, wherein the portions of the two ends of the valve plate not connected with the left and right valve legs are bent downward by a certain angle.

3. The high-flux valve tower of claim 1, wherein the valve trays are formed by splicing a plurality of small valve trays, and the small valve trays are connected through bolts.

4. The high-flux float valve tower of claim 3, wherein the joints between the float valve trays of the small blocks are respectively provided with valve holes and float valves.

5. The high throughput valve tower of claim 1, wherein a plurality of guide holes are formed on the valve tray between the plurality of valve openings, and the guide holes are aligned with the direction of the liquid flow on the surface of the valve tray.

6. A high throughput float valve column according to claim 1, wherein said downcomer is a symmetrically arranged, hemmed, irregularly shaped downcomer.