Self-adjusting type vertical sieve-plate tower

Abstract

The utility model relates to a self-adjusting type vertical sieve-plate tower, which comprises a tower plate, a gas lifting hole positioned on the tower plate and a cap hood sleeved on the gas lifting hole, a through hole for liquid materials to enter is further arranged on the cap hood, and a valve for shielding the through hole is hinged on the inner side of the cap hood. According to the preferable scheme, during use, steam enters the cap cover from the steam rising holes and drives liquid materials to flow upwards for heat exchange and mass transfer, when the flow of the steam is large, the liquid materials are driven to be sprayed out from the open holes in the cap cover, when the flow of the steam is increased, part of the liquid materials enter the cap cover through the through holes, and when the quantity of the steam is increased, the part of the liquid materials enter the cap cover through the through holes. The force of liquid materials pushing the valve is small, and the opening angle of the valve is small, so that the amount of the liquid materials entering the cap hood is small, when steam is increased greatly, the force of the liquid materials pushing the valve is large, the opening angle of the valve is large, the amount of the liquid materials entering the cap hood is large, waste is reduced, the heat exchange efficiency is improved, and the heat exchange efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of machinery, especially to the technical field of mechanical components, and specifically refers to a self-adjusting vertical sieve tray column. Background Art

[0002] The vertical sieve tray is a special configuration of tray which is equipped with vertical perforated tubes to change the horizontal flow of liquid into vertical flow. It is reported that the gas-liquid loading capacity of this kind of tray is almost twice that of ordinary trays, and the tray pressure drop is not too large. However, due to the failure to solve the problem of industrial scale-up, it can only be used for small columns with a diameter of less than one meter. After several years of further research, it has developed into a new vertical sieve tray. The special feature of the new vertical sieve tray is that cylindrical caps with a diameter of 150 - 250 mm are installed on the tray, and many sieve holes are arranged on the upper part of the cylinder wall. In addition, the overflow weir, downcomer, and the way of partitioning and connection are the same as those of ordinary trays.

[0003] In the currently used vertical sieve tray column, a logistics channel for liquid material to enter the cap is formed between the cap and the tray. When the steam flow rate increases, the flow rate in the logistics channel is limited, so there will be waste, resulting in low heat exchange efficiency. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a self-adjusting vertical sieve tray column, which self-adjusts the size of the logistics channel through the setting of valves and perforations, thereby improving the heat exchange efficiency.

[0005] The utility model is realized through the following technical solutions. A self-adjusting vertical sieve tray column includes a tray, riser holes located on the tray, and caps sleeved on the riser holes. A perforation for liquid material to enter is also opened on the cap, and a valve for blocking the perforation is hinged inside the cap.

[0006] In the use of this preferred solution, steam enters the cap from the riser holes, and the steam drives the liquid material to flow upward for heat exchange and mass transfer. When the steam flow rate is large, it will drive the liquid material to spray out from the openings on the cap. When the steam volume increases, some liquid material will enter the cap through the perforation. When the increase in steam volume is small, the force of the liquid material pushing the valve is small, and the opening angle of the valve is small, so that the amount of liquid material entering the cap is small. When the increase in steam volume is large, the force of the liquid material pushing the valve is large, and the opening angle of the valve is large, so that the amount of liquid material entering the cap is large, thereby reducing waste and improving the heat exchange efficiency and ensuring the heat exchange efficiency.

[0007] Preferably, liquid enters the cap from the logistics channel between the cap and the tray, and the perforation communicates with the logistics channel.

[0008] In this preferred solution, through the setting of the perforation being connected to the logistics channel, it is ensured that there is no barrier blocking the liquid material between the perforation and the logistics channel. Thus, when the steam volume is large, the liquid material can enter the cap first.

[0009] Preferably, the perforation is located above the material channel.

[0010] Preferably, the cap includes a tube body connected to the tray and a cap body located above the tube body and connected to the tube body. A steam channel for steam to flow through is formed between the cap body and the tube body. The two opposite sides of the cap body are downwardly inclined hypotenuses.

[0011] In this preferred solution, through the setting of the inclined plate, it is convenient to give a guiding effect for the steam to flow downward, so that the liquid material can be easily dispersed into a large number of liquid droplets with different diameters, forming a large mass transfer surface, and mass transfer and heat transfer are completed in the upper space of the liquid layer.

[0012] Preferably, the cross-section of the tube body is trapezoidal. In this preferred solution, through the trapezoidal setting, it is convenient for the steam to drive the liquid material to quickly leave the cap, thereby improving the heat transfer and mass transfer efficiency.

[0013] Preferably, the lifting air hole is a Venturi hole with an inlet size larger than the outlet size.

[0014] The beneficial effects of the present utility model are as follows: The steam enters the cap from the lifting air hole, and the steam drives the liquid material to flow upward for heat transfer and mass transfer. When the steam flow rate is large, it will drive the liquid material to spray out from the opening on the cap. When the steam volume increases, some liquid materials will enter the cap through the perforation. When the increase in steam volume is small, the force of the liquid material pushing the valve is small, and the opening angle of the valve is small, so that the amount of liquid material entering the cap is small. When the increase in steam volume is large, the force of the liquid material pushing the valve is large, and the opening angle of the valve is large, so that the amount of liquid material entering the cap is large, thereby reducing waste and improving the heat transfer efficiency and ensuring the heat transfer efficiency; through the setting of the perforation being connected to the logistics channel, it is ensured that there is no barrier blocking the liquid material between the perforation and the logistics channel, so that when the steam volume is large, the liquid material can enter the cap first. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view schematic diagram of the structure of the present utility model;

[0016] Figure 2 is the side view schematic diagram of the structure of the present utility model;

[0017] Figure 3 is the three-dimensional schematic diagram of the structure of the present utility model;

[0018] Figure 4 is the three-dimensional schematic diagram of the structure of the present utility model from another angle;

[0019] Figure 5 This is a sectional perspective view of the structure of the present utility model;

[0020] As shown in the figure:

[0021] 1. Tray, 2. Upward gas hole, 3. Pipe body, 4. Valve, 5. Cap body, 6. Steam passage, 7. Material flow passage, 8. Opening. Specific embodiments

[0022] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific embodiments.

[0023] Refer to the appendix Figures 1-5 A self - regulating vertical sieve - plate column of the present utility model includes a tray 1, upward gas holes 2 located on the tray 1, and a cap covering the upward gas holes 2. The upward gas holes 2 are Venturi holes with an inlet size larger than the outlet size. The cap includes a pipe body 3 connected to the tray 1 and a cap body 5 located above the pipe body 3 and connected to the pipe body 3.

[0024] The pipe body 3 includes two trapezoidal first side plates arranged horizontally and oppositely, and two second side plates arranged longitudinally and connecting the two first side plates. The first side plates are fixedly connected to the tray 1, and a material flow passage 7 for liquid material to enter the cap is formed between the second side plates and the tray 1. The bottom side length of the first side plate is greater than the top side length. Due to the trapezoidal arrangement of the first side plates, the cross - section of the pipe body 3 is trapezoidal.

[0025] Perforations are also provided on the second side plates above the material flow passage 7. The perforations extend downward and communicate with the material flow passage 7. Two perforations are provided on the second side plates, and the two perforations are arranged horizontally. A valve 4 corresponding to the perforations and blocking the perforations is hinged inside the second side plates, and the hinge axis of the valve 4 and the second side plates is located above the perforations.

[0026] A number of openings 8 for the gas - liquid mixture to leave the cap are also provided on the second side plates.

[0027] The first side plates are connected to the cap body 5, and a steam passage 6 for steam to flow is formed between the cap body 5 and the second side plates. Two opposite sides of the cap body 5 are inclined downward hypotenuses.

[0028] Refer to the appendix Figure 1 The horizontal direction is the longitudinal direction. Refer to the appendix Figure 2 The horizontal direction is the transverse direction.

[0029] When the utility model is in use, after the steam rising from the lower tower plate 1 passes through the rising air hole 2, the static pressure of the airflow shrinks and decreases, and the liquid material on the tower plate 1 passes through the logistics channel 7 into the cap cover by relying on its own liquid column static pressure and the suction of the airflow, and forms a gas-liquid mixture with the rising steam airflow, and rises while performing mass transfer and heat transfer, completing the first stage of the mass transfer process; part of the gas-liquid mixture leaves the cap cover from the opening 8, and part of the gas-liquid mixture hits the top of the cover to renew the surface of the liquid, and completes the second stage of mass transfer in the space inside the cover; then, the gas-liquid mixture is sprayed out through the opening 8 on the upper side wall of the cap cover, and the liquid material is dispersed into a large number of droplets of different diameters, forming a large mass transfer surface. After completing the third mass transfer and heat transfer in the space above the liquid layer, the droplets return to the upper liquid layer of the tower plate 1, and the gas continues to rise to the upper tower plate 1.

[0030] When the amount of steam increases, part of the liquid material will enter the cap through the perforation. When the amount of steam increases, the force of the liquid material pushing valve 4 is small, and the angle of valve 4 opening is small, so that the amount of liquid material entering the cap is small. When the amount of steam increases, the force of the liquid material pushing valve 4 is large, and the angle of valve 4 opening is large, so that the amount of liquid material entering the cap is large, thereby reducing waste and improving heat exchange efficiency, thereby ensuring heat exchange efficiency.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A self-regulating vertical sieve plate tower, comprising a tower plate (1), an air riser hole (2) located on the tower plate (1), and a cap covering the air riser hole (2), characterized in that: The cap cover is also provided with a through hole for liquid material to enter, and a valve (4) is hingedly connected to the inner side of the cap cover to cover the through hole.

2. The self-adjusting vertical sieve plate tower according to claim 1, characterized in that: The liquid enters the cap from the logistics channel (7) between the cap and the tower plate (1), and the perforations are connected to the logistics channel (7).

3. The self-adjusting vertical sieve plate tower according to claim 2, characterized in that: The perforation is located above the material channel.

4. The self-adjusting vertical sieve plate tower according to claim 1, characterized in that: The cap comprises a tube body (3) connected to the tower plate (1), and a cap body (5) located above the tube body (3) and connected to the tube body (3); a steam channel (6) for steam to flow is formed between the cap body (5) and the tube body (3); and two side edges of the cap body (5) that are arranged opposite to each other are downwardly inclined beveled edges.

5. The self-adjusting vertical sieve plate tower according to claim 4, characterized in that: The cross section of the tube body (3) is trapezoidal.

6. The self-adjusting vertical sieve plate tower according to claim 1, characterized in that: The air riser hole (2) is a Venturi hole whose air inlet size is larger than the air outlet size.

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