CN212142033U

CN212142033U - Lower head for large and medium-sized adsorption cylinder

Info

Publication number: CN212142033U
Application number: CN202020640279.0U
Authority: CN
Inventors: 余志伟; 齐晓峰; 方祺
Original assignee: Zhejiang Shengyang Gas Equipment Manufacturing Co ltd
Current assignee: Zhejiang Shengyang Gas Equipment Manufacturing Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-12-15
Anticipated expiration: 2030-04-24

Abstract

The utility model belongs to the technical field of gas separation equipment, and aims to provide a lower head for a large and medium-sized adsorption cylinder, which comprises a head, wherein the bottom of the head is connected with a lower connecting pipe; two ends of the lower connecting pipe are respectively connected with an air inlet and an air outlet; the top of the lower connecting pipe is provided with a spiral fan blade; an air flow distributor is arranged in the end socket and is of an arch structure; the air flow distributor comprises a compaction structure, a screen and a pore plate, wherein the screen is positioned on the pore plate and is reinforced and fixed through the compaction structure; the air flow distributor is fixed in the seal head through a support frame. The utility model has the characteristics of compact structure, distributor intensity height, air current distribution are even etc, adopt multilayer mat net structure, can effectively prevent the molecular sieve pulverization, avoid the dead angle to produce, can extensively be used for large and medium-sized nitrogen making and adsorb a section of thick bamboo equipment field.

Description

Lower head for large and medium-sized adsorption cylinder

Technical Field

The utility model belongs to the technical field of gaseous air separation equipment, concretely relates to big-and-middle-sized adsorption cylinder is with low head.

Background

An air separation plant is a plant that separates air to obtain a certain high-concentration gas, and is commonly used in the fields of chemical industry, biology, medicine, and the like. The air separation equipment adopts an adsorption cylinder structure, takes a molecular sieve as an adsorbent, applies a pressure swing adsorption principle, and utilizes the molecular sieve to selectively adsorb oxygen and nitrogen so as to separate the nitrogen from the oxygen.

At present, the lower end sockets of the adsorption cylinders of the existing air separation equipment are provided with a gas diffusion structure for dispersing the entering gas to ensure that the gas contacts with the molecular sieve inside to the maximum extent, thereby improving the adsorption efficiency; the existing gas diffusion structure adopts a plurality of diffusers distributed in an adsorption cylinder, and can meet the requirements of gas diffusion and speed reduction, but still has the defects of uneven gas flow distribution, large impact force of gas on a molecular sieve, insufficient diffuser strength and the like in the use process, and particularly has the problems of easy pulverization of the molecular sieve, short service life, dead angle, insufficient uniform gas flow distribution and the like in large and medium-sized nitrogen production adsorption cylinders.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a big-and-middle-sized adsorption cylinder is with low head, have characteristics such as compact structure, distributor intensity height, air current distribution are even, adopt multilayer mat net structure, can effectively prevent the molecular sieve pulverization, avoid the dead angle to produce, can extensively be used for big-and-middle-sized nitrogen-making adsorption cylinder equipment field.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the lower end socket for the large and medium-sized adsorption cylinders comprises an end socket, wherein the bottom of the end socket is connected with a lower connecting pipe; two ends of the lower connecting pipe are respectively connected with an air inlet and an air outlet; the top of the lower connecting pipe is provided with a spiral fan blade; an air flow distributor is arranged in the end socket and is of an arch structure; the air flow distributor comprises a compaction structure, a screen and a pore plate, wherein the screen is positioned on the pore plate and is reinforced and fixed through the compaction structure; the air flow distributor is fixed in the seal head through a support frame.

As an improvement, the bottom of the lower connecting pipe is provided with a drain outlet, and the drain outlet is provided with a control ball valve.

As an improvement, the supporting frame is connected with a fixed reinforcing plate.

As an improvement, the compression structure is provided with a lengthened fixing bolt.

As an improvement, the screen is provided with at least two layers and is fixed on the pore plate through a fixing bolt.

As an improvement, the mesh number of the screen is 20-60 meshes.

As an improvement, the air inlet and the air outlet are connected with an angle seat valve, and the air inlet and the air outlet are automatically controlled by the system to work, so that the aim of matching the two adsorption towers is fulfilled.

The utility model discloses the beneficial effect who gains does: 1. the gas enters the lower connecting pipe through the air inlet, and the flow velocity of the gas is rapidly reduced under the action of the specially-made spiral fan blade, so that the direct impact of the high-flow-velocity gas on the molecular sieve is reduced, the pulverization of the molecular sieve is greatly reduced, and the entering gas is distributed more uniformly;

2. the air flow distributor of the lower end enclosure adopts an arch structure, and is firmer under the action of the support frame and the reinforcing plate, while the air flow distributor of the traditional nitrogen-making adsorption cylinder is in a plane shape, the strength is not enough, the quantity of filled molecular sieves is reduced in a large adsorption cylinder, the dead angles are more, the problems can be effectively reduced by changing the arch structure, and the performance of the molecular sieves is greatly improved; 3. two layers of screen meshes are paved on the orifice plate net and fixed by the pressing plate, the bolt and the nut, so that electric welding sparks are prevented from falling on the screen meshes and breaking in the production process of the container, the second layer plays a role in protection, and the molecular sieve is prevented from falling and affecting the adsorption separation efficiency of the adsorption cylinder.

Drawings

Fig. 1 is the structure schematic diagram of the lower head for the large and medium-sized adsorption cylinder of the utility model.

In the figure: 1. the device comprises a sealing head, 2, a lower connecting pipe, 3, an air inlet, 4, an exhaust port, 5, a spiral fan blade, 6, an air flow distributor, 7, a compression structure, 8, a screen, 9, a pore plate, 10, a support frame, 11, a sewage discharge port, 12, a fixed reinforcing plate, 13, a lengthened fixing bolt, 14 and a fixing bolt.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the lower end enclosure for the large and medium-sized adsorption cylinder of the present embodiment includes an end enclosure 1, and the bottom of the end enclosure 1 is connected to a lower connection pipe 2; two ends of the lower connecting pipe 2 are respectively connected with an air inlet 3 and an air outlet 4; the top of the lower connecting pipe 2 is provided with a spiral fan blade 5; an air flow distributor 6 is arranged inside the seal head 1, and the air flow distributor 6 is of an arch structure; the air flow distributor 6 comprises a compaction structure 7, a screen 8 and a pore plate 9, wherein the screen 8 is positioned on the pore plate 9 and is reinforced and fixed by the compaction structure 7; the air flow distributor 6 is fixed in the seal head 1 through a support frame 10.

Further, the bottom of the lower connecting pipe 2 is provided with a drain outlet 11, and the drain outlet 11 is provided with a control ball valve, so that impurities in the adsorption cylinder can be conveniently discharged, and the clean environment in the adsorption cylinder can be ensured.

Further, the support frame 10 is connected with a fixed reinforcing plate 12; specifically, the fixed reinforcing plate 12 is fixed in the seal head 1 by welding, so that the supporting strength of the support frame 10 is further improved.

Furthermore, the compression structure 7 is provided with the lengthened fixing bolt 13, so that the screen 8 is more firmly fixed, the bearing strength of the screen 8 is improved, more molecular sieves can be placed in the lower end socket, and the device is suitable for large and medium-sized adsorption cylinders.

Furthermore, the screen 8 is provided with at least two layers and is fixed on the orifice plate 9 through the fixing bolt 14, specifically, the screen 8 is provided with two layers, when electric welding sparks fall on the screen to be broken in the production process of the adsorption cylinder, the second layer plays a role in protection, and the phenomenon that the molecular sieve leaks to influence the adsorption separation efficiency of the adsorption cylinder is avoided; furthermore, the mesh number of the screen 8 is 20-60 meshes, preferably 40 meshes, so that the molecular sieve can be supported, and the air inlet efficiency can be improved.

Further, the air inlet 3 and the air outlet 4 are connected with an angle seat valve, air inlet and air outlet are automatically controlled through a system, the purpose of matching two adsorption towers is achieved, and therefore the adsorption cylinders are guaranteed to supply air uninterruptedly all the time.

Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. The lower end enclosure for the large and medium-sized adsorption cylinders comprises an end enclosure (1), wherein the bottom of the end enclosure (1) is connected with a lower connecting pipe (2); the device is characterized in that two ends of the lower connecting pipe (2) are respectively connected with an air inlet (3) and an air outlet (4); the top of the lower connecting pipe (2) is provided with a spiral fan blade (5); an air flow distributor (6) is arranged inside the seal head (1), and the air flow distributor (6) is of an arch structure; the air flow distributor (6) comprises a compaction structure (7), a screen (8) and a pore plate (9), wherein the screen (8) is positioned on the pore plate (9) and is reinforced and fixed through the compaction structure (7); the air flow distributor (6) is fixed in the seal head (1) through a support frame (10).

2. A lower head for a large and medium sized adsorption cylinder according to claim 1, wherein a drain outlet (11) is arranged at the bottom of the lower connection pipe (2), and the drain outlet (11) is provided with a control ball valve.

3. A lower head for a large and medium sized adsorption cylinder according to claim 1, wherein the support frame (10) is connected with a fixed reinforcing plate (12).

4. A lower head for a large and medium sized adsorption cylinder according to claim 1, wherein the compressing structure (7) is provided with an elongated fixing bolt (13).

5. A lower head for a large and medium sized adsorption cylinder according to claim 1, wherein the screen (8) is provided with at least two layers and is fixed on the orifice plate (9) through a fixing bolt (14).

6. A lower head for a large and medium sized adsorption cylinder according to claim 5, wherein the mesh number of the screen (8) is 20-60 meshes.

7. A lower head for a large and medium-sized adsorption cylinder according to claim 1, wherein the air inlet (3) and the air outlet (4) are connected with an angle seat valve, and the air inlet and the air outlet are automatically controlled by a system.