Guiding micro-valve tray

Abstract

The utility model relates to a guiding micro-valve tray which is composed of a tray body with a valve hole, a flat leg guiding micro-valve and a high-low leg guiding micro-valve, wherein the flat leg guiding micro-valve and the high-low leg guiding micro-valve are installed in the valve hole. The size of a valve hole of the guide micro valve is small, the side area of the float valve after gas rising is larger than the bottom area, and the jet liquid flooding is low; the surface of the valve cover is an arc-shaped surface, and the downward arc-shaped valve cover generates downward component force when gas flows out in an arc manner, so that entrainment is reduced. The valve cover is circular or strip-shaped, and the flat leg valve and the high-low leg valve have a proper combination ratio and arrangement form according to different liquid loads on the tower plate, so that the liquid level gradient and the liquid stagnation area on the tower plate are eliminated. The processing capacity of the guiding micro-valve tray is improved by about 30% compared with that of a V1 tray commonly used at present, and the mass transfer efficiency can be improved by about 15%.

Description

Technical Field

[0001] The utility model relates to the technical field of floating valve trays, in particular to a DMV guided microvalve tray. Background Art

[0002] The floating valve tower has good operating performance in the gas-liquid mass transfer unit operation and is widely used in industrial devices. The commonly used floating valve tower tray is the V1 floating valve tower tray, which has large liquid level gradient, liquid stagnation zone, liquid backmixing, etc., which reduces the tower tray efficiency.

[0003] The guide float valve tray improves the shortcomings of the V1 float valve tray. Compared with the V1 float valve tray, the tray efficiency is increased by about 10%, the processing capacity is increased by 15-20%, and the tray pressure drop is reduced by about 15-20%. It is widely used in industrial devices and has achieved good results. However, the inventor found in industrial applications that the float valve of the guide float valve tray is large in size, the lifting height is high, and there is an upward impact when the gas flows out from both sides of the float valve through the valve hole, which cannot further reduce the entrainment of mist and the spray liquid flooding. If the entrainment of mist and the spray liquid flooding can be greatly reduced, the processing capacity and separation effect can be further improved. Utility Model Content

[0004] The utility model aims to optimize the deficiencies of the prior art and provide a guide microvalve tray.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A guide microvalve tray, characterized in that the microvalve tray is composed of a tray with a valve hole and a flat-leg guide microvalve and a high-low leg guide microvalve installed in the valve hole;

[0007] Valve leg positioning holes for installing the float valve are arranged at the front and rear ends of the valve hole;

[0008] The flat-leg guided microvalve and the high-low leg guided microvalve both have a valve cover, a front valve leg, a rear valve leg, a valve edge, a valve foot and a support angle; the valve cover is circular or strip-shaped, the front valve leg and the rear valve leg are arranged at both ends of the valve cover and are connected to the valve cover as a whole; the valve edge is arranged around the valve cover, the valve edge is a flat edge or a toothed edge, the valve foot is arranged at the ends of the front valve leg and the rear valve leg, and the support angles are evenly distributed on the valve cover; among them, the flat-leg guided microvalve has the same height as the rear valve leg; the high-low leg guided microvalve has the front valve leg higher than the rear valve leg; in the guided microvalve tray, the ratio of the flat-leg guided microvalve to the high-low leg guided microvalve is determined according to the liquid flow intensity M 3 / (m·h) is adjusted.

[0009] The valve cover of the guide microvalve is provided with 0-2 guide holes, the opening height h1 of the guide holes is 0-5 mm, the shape of the guide holes is tongue-shaped, trapezoidal, rectangular, and the air flow direction out of the guide holes is the same as the liquid flow direction on the tower plate.

[0010] The valve cover surface is a plane or an arc surface with an arc angle of 0°-5°.

[0011] The width of the valve legs of the said guide microvalve is 2-15 mm for the front valve leg 14 and 3-25 mm for the rear valve leg 24; however, it must be ensured that the width of the rear valve leg is ≥ the width of the front valve leg.

[0012] The valve leg heights of the pilot microvalve are 2-20 mm for the front valve leg 14 and 2-15 mm for the rear valve leg 24; however, it must be ensured that the front valve leg height is ≥ the rear valve leg height.

[0013] The diameter of the guide microvalve can be selected within the range of 15-35 mm; or the length including the branch angle can be selected within the range of 10-60 mm, and the width can be selected within the range of 10-40 mm.

[0014] When the guide microvalve is fully opened, the maximum opening height h is 5-25 mm.

[0015] The side area of ​​the guide microvalve is larger than the bottom area.

[0016] During installation, place the pilot microvalve in the positioning hole of the valve hole, and then straighten the valve foot to fix the pilot microvalve on the tower plate. After installation, the pilot microvalve can float up and down.

[0017] Compared with the existing float valve technology, the advantages of the utility model are:

[0018] The guide microvalve is small in size, low in height, and has a side area larger than the bottom area. The gas flowing out from the side of the float valve reduces the flow rate and reduces the spray liquid flooding; when the gas enters the guide microvalve from the valve hole, it impacts the valve cover, and the downward arc-shaped valve cover generates a downward component force when the gas flows out, reducing the entrainment of mist and foam; setting micro flat-leg guide float valves and micro high-low leg guide float valves with different ratios in the rectangular area of ​​the tower plate can eliminate the liquid level gradient on the tower plate; setting micro high-low leg guide float valves in the arched area of ​​the tower plate can eliminate the liquid stagnation area on the tower plate. The above advantages improve the processing capacity and mass transfer efficiency of the tower plate.

[0019] The guide microvalve tray of the utility model retains the advantages of the guide float valve tray. Under the same operating conditions, its mass transfer efficiency is improved by about 15% compared with V1, and the processing capacity can be improved by about 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the arrangement of the guided microvalve tray;

[0021] Among them: 1 tower plate liquid receiving area; 2 tower plate liquid downfall area; 3 tower plate arch area; 4 tower plate center area; 5 flat leg guide micro valve; 6 high and low leg guide micro valve;

[0022] Figure 2 It is a schematic diagram of a flat-leg-guided microvalve;

[0023] Among them: 19 valve sides.

[0024] Figure 2-1 This is a cross-sectional view of a flat-leg guided microvalve;

[0025] Wherein: 11 valve cover; 13 support angle; 14 front valve leg; 16 bottom plate; 17 valve hole; 18 gas channel; 24 rear valve leg, h is the maximum opening height when the guide microvalve is fully opened.

[0026] Figure 3 It is a schematic diagram of the high and low leg guided micro valve;

[0027] Among them: 19 valve sides.

[0028] Figure 3-1 This is a cross-sectional view of the high and low leg guided microvalve;

[0029] Wherein: 11 valve cover; 12 guide hole; 13 support angle; 14 front valve leg; 15 valve foot; 16 bottom plate; 17 valve hole; 18 gas channel; 24 rear valve leg, h is the maximum opening height when the guide microvalve is fully opened; h1 is the opening height of the guide hole.

[0030] Figure 4 Schematic diagram of the valve hole of the guided microvalve.

[0031] Among them: 17 valve hole; 20 front valve leg positioning hole; 21 rear valve leg positioning hole. DETAILED DESCRIPTION

[0032] The following provides a specific implementation of a guide microvalve tray of the utility model.

[0033] Example 1

[0034] A guide microvalve tower plate is composed of a tower plate with a valve hole and a guide microvalve installed in the valve hole; the valve cover surface of the guide microvalve is a plane or an arc surface.

[0035] The guide microvalve includes a valve cover 11, a guide hole 12, a valve foot 13 and a support angle 15, a front valve leg 14, a rear valve leg 24, and a valve edge 19; the front valve leg 14 and the rear valve leg 24 are connected to the valve cover 11 through both ends; the valve edge 19 is arranged around the valve cover 11, the valve edge 19 is a flat edge or a serrated edge, and the valve foot 15 is arranged at the ends of the front valve leg 14 and the rear valve leg 24; the support angle 13 is arranged on the valve cover 11; the guide hole 12 is arranged on the valve cover 11, and the air flow direction out of the guide hole 12 is the same as the liquid flow direction.

[0036] The details are as follows:

[0037] Figure 1 Schematic diagram of the arrangement of the pilot microvalve tray;

[0038] According to the intensity of the liquid flow, the flat-leg guide microvalves and the high-low leg guide microvalves are arranged in an appropriate combination ratio.

[0039] When the liquid flow intensity L on the tray is less than 10M 3 / (m·h), the occupancy rate of the flat leg guide microvalves on the tray is 80-90%, and the occupancy rate of the high and low leg guide microvalves is 10-20%.

[0040] When the liquid flow intensity on the tower plate is in the range of L=10-50M3 / (m·h), the occupancy rate of the flat-leg guide microvalves on the tower plate is 50-80%, and the occupancy rate of the high-low leg guide microvalves is 20-50%.

[0041] When the liquid flow intensity L on the tray is greater than 50M 3 / (m·h), the occupancy rate of the flat-leg guide microvalves on the tower plate is 20-50%, and the occupancy rate of the high-low leg guide microvalves is 50-80%.

[0042] And it can be determined according to the specific circumstances.

[0043] Figure 2 It is a schematic diagram of a flat-leg-guided microvalve; Figure 2-1 This is a cross-sectional view of a flat-leg guided microvalve; Figure 3 It is a schematic diagram of the high and low leg guided micro valve; Figure 3-1 This is a cross-sectional view of the high and low leg guided microvalve; Figure 4 Schematic diagram of the valve hole of the guided microvalve.

[0044] include:

[0045] Valve cover 11;

[0046] A front valve leg 14 and a rear valve leg 24 are provided at both ends of the valve cover 11 and are connected to the valve cover 11 as a whole;

[0047] A valve edge 19 disposed around the valve cover 11;

[0048] A valve foot 15 disposed between the front valve leg 14 and the rear valve leg 24;

[0049] A support angle 13 is provided on the edge of the valve cover 11;

[0050] The valve cover is provided with an upwardly protruding guide hole 12, and the gas coming out of the guide hole 12 is consistent with the flow direction of the liquid on the tower plate.

[0051] According to the technical solution of the utility model:

[0052] The valve cover 11 is a plane or an arc-shaped surface with an arc angle of 0°-5°;

[0053] The diameter of the valve cover 11 can be selected within the range of 15-35 mm; or the length including the valve edge 19 can be selected within the range of 10-60 mm and the width can be selected within the range of 10-40 mm;

[0054] The valve cover 11 is provided with a guide hole 12, and the opening height h1 of the guide hole is 0-5 mm;

[0055] The diameter of the valve hole 20 can be selected within the range of 15-35 mm; or the length can be selected within the range of 10-60 mm, and the width can be selected within the range of 10-40 mm;

[0056] The width of the front valve leg positioning hole 20 is 2-15 mm, and the width of the rear valve leg positioning hole 21 is 3-25 mm; but it must be ensured that the width of the rear valve leg positioning hole ≥ the width of the front valve leg positioning hole;

[0057] The length of the front valve leg positioning hole 20 is 2-6 mm, and the length of the rear valve leg positioning hole 21 is 2-6 mm;

[0058] The high-low leg guide microvalve 6 is arranged in the arched area 3 of the tower tray, and can also be arranged at the tower tray near the liquid inlet end 1; the flat leg guide microvalve 5 is arranged in the central area 4 of the tower tray.

[0059] The guide microvalve of the utility model is small in size, low in height, and has a side area larger than the bottom area. The gas flowing out from the side of the float valve reduces the flow rate and reduces the spray liquid flooding; when the gas enters the guide microvalve from the valve hole, it impacts the valve cover, and the downward arc-shaped valve cover generates a downward component force when the gas flows out, reducing the entrainment of mist and foam; micro flat-leg guide float valves and micro high-low leg guide float valves with different proportions are set in the rectangular area of ​​the tower plate, which can eliminate the liquid level gradient on the tower plate; micro high-low leg guide float valves are set in the arched area of ​​the tower plate, which can eliminate the liquid stagnation area on the tower plate. Under the same operating conditions, the guide microvalve tower plate of the utility model has a processing capacity increased by about 30% compared with the V1 float valve tower plate, and the mass transfer efficiency can be increased by about 15%.

[0060] Technicians in this technical field can make some modifications and improvements without departing from the concept of the present utility model, and these modifications and improvements should also be considered within the scope of protection of the present utility model.

Claims

1. A guide microvalve tray, characterized in that: The microvalve tray is composed of a tray with a valve hole and a flat-leg guide microvalve and a high-low leg guide microvalve installed in the valve hole; Valve leg positioning holes for installing the float valve are arranged at the front and rear ends of the valve hole; The flat-leg guided microvalve and the high-low leg guided microvalve both have a valve cover, a front valve leg, a rear valve leg, a valve edge, a valve foot and a support angle; the valve cover is circular or strip-shaped, the front valve leg and the rear valve leg are arranged at both ends of the valve cover and are connected to the valve cover as a whole; the valve edge is arranged around the valve cover, the valve edge is a flat edge or a toothed edge, the valve foot is arranged at the ends of the front valve leg and the rear valve leg, and the support angles are evenly distributed on the valve cover; among them, the flat-leg guided microvalve has the same height as the rear valve leg; the high-low leg guided microvalve has the front valve leg higher than the rear valve leg; in the guided microvalve tray, the ratio of the flat-leg guided microvalve to the high-low leg guided microvalve is determined according to the liquid flow intensity M 3 / (m·h) is adjusted.

2. A guided microvalve tray as claimed in claim 1, characterized in that: The valve cover of the guide microvalve is provided with 0-2 guide holes, the opening height h1 of the guide holes is 0-5 mm, the shape of the guide holes is tongue-shaped, trapezoidal, rectangular, and the air flow direction out of the guide holes is the same as the liquid flow direction on the tower plate.

3. A guided microvalve tray as claimed in claim 1, characterized in that: The valve cover surface is a plane or an arc surface with an arc angle of 0°-5°.

4. A guided microvalve tray as claimed in claim 1, characterized in that: The width of the front valve leg is 2-15 mm, the width of the rear valve leg is 3-25 mm, and the width of the rear valve leg is greater than or equal to the width of the front valve leg.

5. A guided microvalve tray as claimed in claim 1, characterized in that: The height of the front valve leg is 2-20 mm, the height of the rear valve leg is 2-15 mm, and the height of the front valve leg is ≥ the height of the rear valve leg.

6. A guided microvalve tray as claimed in claim 1, characterized in that: The guide microvalve has a diameter of 15-35 mm, or a length including the branch angle of 10-60 mm and a width of 10-40 mm.

7. A guided microvalve tray as claimed in claim 1, characterized in that: When the guide microvalve is fully opened, the maximum opening height h is 5-25 mm.

8. A guided microvalve tray as claimed in claim 1, characterized in that: The side area of ​​the pilot microvalve is larger than the bottom area.

Images