CN213841828U

CN213841828U - Anti-siphon water cooling tower of air separation pre-cooling system

Info

Publication number: CN213841828U
Application number: CN202022178668.9U
Authority: CN
Inventors: 李朋; 梁继峰; 宋海军
Original assignee: Wuxi Lianzhong Gas Co ltd
Current assignee: Wuxi Lianzhong Gas Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-07-30
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses an anti-siphon water cooling tower of an air separation pre-cooling system, which comprises an overflow pipe, wherein the water inlet end of the overflow pipe is positioned inside the water cooling tower, and the water outlet end is positioned outside the water cooling tower; a water inlet bent pipe is arranged at the water inlet end of the overflow pipe and is bent upwards, and a cap-shaped protective device is sleeved at a water inlet above the water inlet bent pipe; the cap-shaped protection device consists of an inner ring body and an outer cap body; the inner ring body is annular as a whole, and the upper edge of the inner ring body is provided with a plurality of outward hooks; the outer cap body is integrally in a cap shape and comprises an upper end diversion cover and a lower end protection ring which are integrally arranged, a plurality of hollow grooves are formed in the outer ring surface of the protection ring, and a plurality of hanging buckles are arranged on the inner ring surface of the protection ring; the lower end of the protective ring is fixedly arranged on the overflow pipe so as to fix the outer cap body; the hooks are hooked on the hanging buckles correspondingly one by one to connect the inner ring body and the outer cap body. The utility model discloses can the liquid level height in the automatically regulated tower to prevent to produce siphonage.

Description

Anti-siphon water cooling tower of air separation pre-cooling system

Technical Field

The utility model relates to an air separation plant technical field especially relates to an air separation precooling system prevent siphon water-cooling tower.

Background

The precooling system consists of an air cooling tower, a water cooling tower, a refrigerating unit and a circulating water system. Wherein the cold source of the water cooling tower is the waste nitrogen and nitrogen generated by the rectifying tower and discharged from the top of the tower after heat exchange. The water cooling tower is essentially a mixed heat exchanger, cooling water with higher temperature from a closed water cooling tower directly contacts with waste nitrogen and nitrogen gas from the upper tower of the rectifying tower in the tower, on one hand, because the temperature of the water is higher than that of the waste nitrogen, heat is directly transferred from the water to the waste nitrogen, so that the water is cooled; on the other hand, because the gas is relatively dry, water molecules can be continuously evaporated and diffused into the waste nitrogen. The water evaporation needs to absorb latent heat of vaporization, and heat is taken away from the water, so that the temperature of the water is continuously reduced.

In order to adjust the water level in the water-cooling tower and avoid the super-high, an overflow device is required to be arranged in the water-cooling tower. The conventional overflow device for the water cooling tower drains water and overflows through an overflow pipe installed on the wall of the tower, and in order to prevent water flowing down from the upper part of the tower from entering the overflow pipe, a water inlet at the front end of the overflow pipe is usually arranged in a downward bent manner.

When the liquid level was higher than the overflow pipe in the water-cooling tower, rivers flowed from the overflow pipe, however, the water inlet of downwarping probably arouses the siphon effect, and water in the water-cooling tower can continue to flow under the siphon effect, until liquid level and water sucking mouth level, rather than with the overflow pipe level, influences the controllability of overflow pipe to the liquid level, leads to the liquid level to hang down excessively easily, causes the water-cooling tower can not normally work.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides an empty anti-siphon water-cooling tower of precooling system that divides can the liquid level height in the automatically regulated tower to prevent to produce siphonage.

The technical scheme is as follows: in order to achieve the purpose, the anti-siphon water cooling tower of the air separation pre-cooling system comprises a water cooling tower provided with an overflow pipe, wherein the water inlet end of the overflow pipe is positioned inside the water cooling tower, and the water outlet end of the overflow pipe is positioned outside the water cooling tower; the overflow pipe is characterized in that a water inlet bent pipe is arranged at the water inlet end of the overflow pipe and is bent upwards, and a cap-shaped protective device is sleeved at a water inlet above the water inlet bent pipe.

Further, the cap-shaped protection device consists of an inner ring body and an outer cap body; the inner ring body is annular as a whole, and the upper edge of the inner ring body is provided with a plurality of outward hooks; the outer cap body is integrally in a cap shape and comprises an upper diversion cover and a lower protection ring which are integrally arranged, a plurality of hollow grooves are formed in the outer ring surface of the protection ring, and a plurality of hanging buckles are arranged on the inner ring surface of the protection ring; the lower end of the protective ring is fixedly arranged on the overflow pipe so as to fix the outer cap body; the plurality of hooks are hooked on the plurality of hanging buckles in a one-to-one correspondence manner so as to connect the inner ring body and the outer cap body; the inner ring body is correspondingly sleeved at a water inlet of the water inlet bent pipe, and the water inlet is higher than the lower surface of the inner ring body and lower than the upper surface of the inner ring body; the lower surface of the guard ring is lower than the upper surface of the inner ring body.

Furthermore, the suspension buckles are in one-to-one correspondence with the hollow grooves, and the suspension buckles are arranged at the upper edges of the corresponding hollow grooves; the front end of the hook extends downwards to form a baffle, and the baffle is separated from the inner annular surface of the protection ring in a clearance mode.

Further, the horizontal projection of the hollow-out groove falls in the horizontal projection area of the corresponding baffle.

Furthermore, the upper surface of the shunting cover is spherical or conical, and an annular inclined plate inclined outwards is arranged at the junction of the shunting cover and the protective ring.

Further, the lower edge of the hollow-out groove is higher than the water inlet.

Further, the lower extreme of interior ring from top to bottom leanin, the water inlet department of inlet elbow is from bottom to top leanout.

Has the advantages that: the utility model discloses an empty siphon water-cooling tower of preventing of precooling system that divides, its beneficial effect as follows:

1) the water inlet of an overflow pipe in the water cooling tower is bent upwards to prevent the siphon action, and a cap-shaped protective device is arranged above the water inlet to prevent water flowing down from the upper part from entering the overflow pipe;

2) the cap-shaped protection device is divided into an inner ring body and an outer cap body, the lower surface of the inner ring body is lower than a water inlet of the overflow pipe, water in the water-cooling tower can be prevented from being splashed into the overflow pipe, and the interlayer between the outer cap body and the inner ring body is communicated with the outside through the hollow groove, so that the cap-shaped protection device can be prevented from generating a siphon effect.

Drawings

FIG. 1 is a schematic structural view of a water cooling tower of the present invention;

FIG. 2 is an exploded view of the cap guard;

FIG. 3 is a schematic view of the cap guard in its assembled position during operation;

FIG. 4 is a cross-sectional view of the cap guard in operation;

FIG. 5 is a schematic diagram of the internal ring structure;

fig. 6 is a schematic structural diagram of the outer cap body.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The anti-siphon water-cooling tower of the air separation pre-cooling system as shown in the attached drawings 1 to 6 comprises a water-cooling tower 1 provided with an overflow pipe 2, wherein the structure of the water-cooling tower 1 is shown in the attached drawing 1, circulating water with higher temperature flows in from the upper part of the water-cooling tower 1, and flows downwards after being sprayed by a spray head; the polluted nitrogen and nitrogen from the upper tower of the rectifying tower enter from the lower part of the water-cooling tower 1 and flow upwards. Circulating water flows to the bottom of the water cooling tower 1 after heat exchange between the packing layer and nitrogen.

The water inlet end of the overflow pipe 2 is positioned inside the water cooling tower 1, and the water outlet end of the overflow pipe 2 is positioned outside the water cooling tower 1. And a water inlet bent pipe 3 is arranged at the water inlet end of the overflow pipe 2. The water inlet elbow 3 is bent upwards to prevent the siphon action. The water inlet 4 above the water inlet elbow 3 is sleeved with a cap-shaped protective device 14 to prevent water flowing down from the upper part from entering the overflow pipe 2 from the water inlet 4.

Different from the traditional overflow device, the traditional overflow device needs liquid to overflow through the overflow pipe 2, which is equivalent to controlling the liquid level to be equal to the level of the overflow pipe 2, but the liquid level is too low due to the siphoning effect; and the utility model discloses in need the liquid level to spill over water inlet 4 and just can overflow, be equivalent to keep level with water inlet 4 with liquid level control, and can not take place the siphon effect.

As shown in fig. 2, 5 and 6, the cap guard 14 is composed of an inner ring 5 and an outer cap 6. The whole inner ring body 5 is annular, and the upper edge of the inner ring body 5 is provided with a plurality of outward hooks 7. The outer cap body 6 is integrally cap-shaped and comprises an upper diversion cover 8 and a lower protection ring 9 which are integrally arranged, a plurality of hollow grooves 10 are formed in the outer annular surface of the protection ring 9, and a plurality of hanging buckles 11 are arranged on the inner annular surface of the protection ring 9. As shown in fig. 3, the lower end of the guard ring 9 is fixedly disposed on the overflow pipe 2 to fix the outer cap 6. The hooks 7 are correspondingly hooked on the hanging buckles 11 one by one to connect the inner ring body 5 and the outer cap body 6, so as to fix the inner ring body 5.

The inner ring body 5 is correspondingly sleeved at the water inlet 4 of the water inlet bent pipe 3, and the water inlet 4 is higher than the lower surface of the inner ring body 5 and lower than the upper surface of the inner ring body 5, so that water flow is prevented from splashing into the water inlet 4. The lower surface of the guard ring 9 is lower than the upper surface of the inner ring body 5, so that water flow is prevented from splashing into the inner ring body 5.

The cap-shaped protection device 14 is divided into the inner ring 5 and the outer cap 6, so that the inside of the cap-shaped protection device 14 can be communicated with the outside air flow through the hollow-out groove 10 on the outer cap 6, and the cap-shaped protection device 14 is prevented from generating siphon action. If the cap-shaped protection device 14 is an integral body, in order to prevent the water flow above from directly flowing into the water inlet 4, the cap-shaped protection device 14 is inconvenient to be provided with a ventilation groove; in order to prevent the water flow below from splashing into the water inlet 4, the lower end of the cap-shaped protective device 14 is inevitably lower than the water inlet 4, a section of new downward-bent pipe body is formed between the cap-shaped protective device 14 and the pipe wall of the water inlet elbow 3, and the lower pipe opening of the pipe body is lower than the water inlet 4, so that the siphon action is caused again, and the control of the overflow pipe 2 on the liquid level is influenced.

The hanging buckles 11 correspond to the hollow grooves 10 one by one, and the hanging buckles 11 are arranged on the upper edges of the corresponding hollow grooves 10. The front end of the hook 7 extends downwards to form a baffle 12, and the baffle 12 is separated from the inner annular surface of the guard ring 9. The baffles 12 may block water splashing from the hollow 10. The gap between the baffle 12 and the guard ring 9 is to ensure the communication between the inside of the cap guard 14 and the outside air.

The horizontal projection of the hollow-out groove 10 falls in the horizontal projection area of the corresponding baffle 12, the plate surface of the baffle 12 completely blocks the hollow-out groove 10, and the baffle 12 has a good blocking effect on splashed water flow.

The upper surface of the diversion cover 8 is spherical or conical, so that water flowing down from the upper part of the water cooling tower 1 is prevented from being gathered on the diversion cover 8. The junction of the shunt cover 8 and the protective ring 9 is provided with an annular inclined plate 13 inclined outwards, so that water flowing downwards from the shunt cover 8 is prevented from entering the hollow groove 10.

The lower edge of the hollow-out groove 10 is higher than the water inlet 4.

The lower extreme of interior ring 5 from top to bottom leanin, the water inlet 4 department of return bend 3 of intaking is by lower supreme leanin, prevents that the water route from the interior ring 5 and the interval department of return bend 3 of intaking from splashing into water inlet 4.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an air separation precooling system's anti-siphon water-cooling tower which characterized in that: the device comprises a water cooling tower (1) provided with an overflow pipe (2), wherein the water inlet end of the overflow pipe (2) is positioned inside the water cooling tower (1), and the water outlet end of the overflow pipe (2) is positioned outside the water cooling tower (1); the end of intaking of overflow pipe (2) is provided with into water return bend (3), the return bend of intaking (3) kickup, water inlet (4) department cover of return bend (3) top of intaking is equipped with cap form protector (14).

2. The anti-siphon water-cooling tower of the air separation pre-cooling system according to claim 1, characterized in that: the cap-shaped protection device (14) consists of an inner ring body (5) and an outer cap body (6); the inner ring body (5) is annular as a whole, and a plurality of outward hooks (7) are arranged at the upper edge of the inner ring body (5); the outer cap body (6) is integrally cap-shaped and comprises an upper end diversion cover (8) and a lower end protection ring (9) which are integrally arranged, a plurality of hollow grooves (10) are formed in the outer ring surface of the protection ring (9), and a plurality of hanging buckles (11) are arranged on the inner ring surface of the protection ring (9);

the lower end of the protective ring (9) is fixedly arranged on the overflow pipe (2) so as to fix the outer cap body (6); the hooks (7) are correspondingly hooked on the hanging buckles (11) one by one to connect the inner ring body (5) and the outer cap body (6);

the inner ring body (5) is correspondingly sleeved at the water inlet (4) of the water inlet bent pipe (3), and the water inlet (4) is higher than the lower surface of the inner ring body (5) and lower than the upper surface of the inner ring body (5); the lower surface of the guard ring (9) is lower than the upper surface of the inner ring body (5).

3. The anti-siphon water-cooling tower of the air separation pre-cooling system according to claim 2, characterized in that: the hanging buckles (11) are in one-to-one correspondence with the hollow grooves (10), and the hanging buckles (11) are arranged at the upper edges of the corresponding hollow grooves (10); the front end of the hook (7) extends downwards to form a baffle (12), and the baffle (12) is separated from the inner annular surface of the protective ring (9) in a clearance mode.

4. The anti-siphon water-cooling tower of the air separation pre-cooling system according to claim 3, characterized in that: the horizontal projection of the hollow-out groove (10) falls within the horizontal projection area of the corresponding baffle (12).

5. The anti-siphon water-cooling tower of the air separation pre-cooling system according to claim 2, characterized in that: the upper surface of the shunting cover (8) is spherical or conical, and an annular inclined plate (13) which inclines outwards is arranged at the junction of the shunting cover (8) and the protective ring (9).

6. The anti-siphon water-cooling tower of the air separation pre-cooling system according to claim 2, characterized in that: the lower edge of the hollow-out groove (10) is higher than the water inlet (4).

7. The anti-siphon water-cooling tower of the air separation pre-cooling system according to claim 2, characterized in that: the lower extreme of interior ring (5) from top to bottom leanin, water inlet (4) of return bend (3) are located and are leaned out from lower supreme.