CN219914043U - Air cooler with multi-section steam inlet - Google Patents

Abstract

The utility model belongs to the technical field of coal chemical equipment, and particularly discloses an air cooler with multi-stage steam inlet, which comprises a main steam exhaust pipeline and a box body, wherein one surface of the box body is open, a plurality of variable frequency fans are fixedly connected on the box body, a plurality of flow limiting pipes are arranged on the main steam exhaust pipeline, a plurality of steam distribution pipes are arranged in the box body side by side, the other ends of the flow limiting pipes are communicated with the steam distribution pipes, fin pipes are communicated between two adjacent steam distribution pipes, a liquid collecting pipe box is communicated with the fin pipes close to the bottom end of the box body, and the liquid collecting pipe box is fixedly connected in the box body. When the variable frequency fan is used, a worker opens the variable frequency fan, so that air flows through the variable frequency fan and the finned tube, exhaust steam is introduced into the main steam exhaust pipeline, enters the steam distribution pipe and the finned tube for heat exchange, and is converted into condensate to flow into the liquid collecting pipe box at the bottom. According to the air cooler, through the arrangement of the steam distribution pipes and the fin pipes at all levels, the amount of exhaust steam entering the air cooler is increased, and the heat exchange efficiency of the air cooler is improved.

Description

Air cooler with multi-section steam inlet

Technical Field

The utility model relates to the technical field of heat exchange equipment, in particular to an air cooler with multi-stage steam inlet.

Background

The air cooler is called air cooler for short, uses air as coolant, uses the environment air to cool the heat exchanger of the exhaust steam, has wide application in the petrochemical industry field.

The air cooler finned tube that current is commonly used sets up in a box, the ventilation window has been seted up to the box, when the air cooler during operation, the fan takes away the vapor in the box, make the cooling water who sprays on the finned tube evaporate fast, thereby make the fluid in the finned tube obtain the cooling, because the finned tube has the fin, the resistance that the air flow passes through the finned tube is great, so the air in the box can flow along the route that the resistance is less and not through the finned tube mostly, the draught fan only plays basically and takes away the effect of vapor in the box, unable a large amount of air scour finned tube, the forced air cooling effect to the finned tube is very little, lead to the heat exchange efficiency of finned tube to reduce.

The prior art discloses a Chinese patent with the patent name of high-efficiency evaporative cooler and the publication number of CN101504258B, and the specific structure is that the cooler comprises a water spraying device, a finned tube, a water reservoir, an induced draft fan, a cylinder body and the like. Under the action of the induced draft fan, negative pressure is formed in the cylinder body, air outside the cylinder body is forced to enter the cylinder body through gaps of the finned tubes, the induced draft fan takes away water vapor formed by evaporation of cooling water sprayed on the finned tubes, so that a large amount of air is forced to wash the finned tubes, the finned tubes are subjected to good air cooling effect, and therefore the heat exchange efficiency of the finned tubes is remarkably improved.

However, the air cooler only has one total exhaust steam inlet and the finned tube, so that the amount of exhaust steam introduced into the finned tube is limited, and the heat exchange efficiency of the air cooler is affected.

Disclosure of Invention

The utility model aims to provide an air cooler with multi-stage steam inlet, which solves the problem that the prior air cooler provided in the background art only has one exhaust steam inlet, so that the exhaust steam inlet amount is less and the heat exchange efficiency of the air cooler is improved.

In order to achieve the above purpose, the basic scheme provided by the utility model is as follows: the utility model provides an air cooler of multistage admission, includes main exhaust steam pipe and box, the one side of box is opened, the rigid coupling has a plurality of variable frequency fan on the box, variable frequency fan's air-out end is just to the open end of box, be equipped with a plurality of current-limiting tube on the main exhaust steam pipe, be equipped with a plurality of steam distributing pipe side by side in the box, the other end and the steam distributing pipe intercommunication of current-limiting tube, adjacent two the intercommunication has the finned tube between the steam distributing pipe, is close to the box bottom the finned tube intercommunication has the collector tube case, collector tube case rigid coupling is inside the box.

The principle and the beneficial effects of the utility model are as follows: when the variable frequency fan is used, a worker opens the variable frequency fan, air is generated through the variable frequency fan, the air passes through the variable frequency fan and the finned tubes, then the worker introduces exhaust steam of the steam turbine into the main exhaust steam pipeline, the exhaust steam entering the main exhaust steam pipeline enters the steam distribution pipes of all stages through the current limiting pipe, then enters the finned tubes of all stages, at the moment, the exhaust steam introduced into the finned tubes exchanges heat with the air passing through the finned tubes, and then the exhaust steam is converted into condensate, and finally the condensate flows into the liquid collecting pipe box at the bottom. Compared with the prior art, the air cooler realizes a staged air inlet mode by arranging the multi-stage steam distribution pipe and the fin pipes, increases the amount of exhaust steam entering the air cooler, and improves the heat exchange efficiency of the air cooler.

And the scheme II is the optimization of the basic scheme, each finned tube is vertically arranged, and the flow velocity of condensate in the finned tubes is quickened by the vertical arrangement mode, so that the condensate can quickly flow into a liquid collecting tube box at the bottom, the overlong stay time of the condensate in the finned tubes is avoided, a liquid film staying for a long time is formed, and the heat transfer efficiency is reduced.

The scheme III is the preference of this basic scheme, liquid collecting pipe case top is provided with the non-condensing outlet pipe, and the non-condensing outlet pipe is on the top of liquid collecting pipe case, can in time discharge the exhaust steam that does not condense, prevents that the exhaust steam from gathering up in the liquid collecting pipe case, influences air cooler's heat exchange efficiency.

Scheme IV, this preference of basic scheme, be provided with U-shaped tube bank in the collector tube case, two ports of U-shaped tube bank all run through collector tube case and box in proper order, and U-shaped tube bank can continue the cooling condensation with uncondensed exhaust steam, improves air cooler's heat exchange efficiency.

Drawings

FIG. 1 is a perspective view of an air cooler for a multi-stage inlet air stream according to the present utility model;

FIG. 2 is another perspective view of an air cooler for a multi-stage inlet according to the present utility model;

FIG. 3 is a side view of an air cooler of the present utility model with multiple stage admission;

fig. 4 is a rear view of an air cooler for a multi-stage inlet air according to the present utility model.

Detailed Description

The utility model is described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the main exhaust pipeline 1, the current limiting pipe 2, the steam distributing pipe 3, the fin pipe 4, the variable frequency fan 5, the non-condensing outlet pipe 6, the liquid collecting pipe box 7, the circulating water U-shaped pipe bundle 8 and the box body 9.

Examples

As shown in fig. 1 and 2: the utility model provides an air cooler of multistage admission, including main exhaust steam pipe 1 and box 9, the one side of box 9 is opened, the rigid coupling has a plurality of variable frequency fan 5 on the box 9, the air-out end of variable frequency fan 5 is just to the open end of box 9, be equipped with a plurality of restriction pipe 2 on the main exhaust steam pipe 1, be equipped with a plurality of steam distribution pipe 3 side by side in the box 9, the other end and the steam distribution pipe 3 intercommunication of restriction pipe 2, the intercommunication has finned tube 4 between two adjacent steam distribution pipes 3, every finned tube 4 all vertically sets up, the finned tube 4 intercommunication that is close to the bottom of box 9 has collector tube case 7, the inside of collector tube case 7 is provided with two ports of U-shaped tube bank 8,U shape tube bank 8 all runs through collector tube case 7 and box 9 in proper order, the top of collector tube case 7 is provided with non-condensing outlet pipe 6.

The implementation manner of this example is as follows: when the variable frequency fan 5 is started by a worker, the variable frequency fan 5 enables surrounding air to generate air flow, the air flow passes through the variable frequency fan 5 and enters the box 9, the air flow further passes through the finned tube 4, then the exhaust steam of the steam turbine is introduced from the bottom of the main exhaust steam pipeline 1, the exhaust steam entering the main exhaust steam pipeline 1 sequentially enters the steam distribution pipes 3 at all levels through the flow limiting pipe 2, the exhaust steam entering the steam distribution pipes 3 at all levels enters the finned tubes 4 at all levels again, the exhaust steam introduced into the finned tubes 4 exchanges heat with the air flow passing through the finned tubes 4, the exhaust steam is further converted into condensate, the condensate flows into the liquid collecting pipe box 7 at the bottom, the condensate which is collected into the liquid collecting pipe box 7 is discharged from the outlet at the bottom, the exhaust steam which is not completely exchanged in the finned tubes 4 can be introduced into the liquid collecting pipe box 7 together with the condensate, at the moment, cooling water is introduced into the water inlet of the U-shaped pipe bundles 8, the cooling water continuously flows through the U-shaped pipe bundles 8, the exhaust steam which is discharged from the other ports can further cool the uncondensed exhaust steam, and the exhaust steam which is still uncondensed through the uncondensed exhaust steam outlet 6.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (4)

1. The utility model provides an air cooler of multistage admission, its characterized in that, including main exhaust steam pipe (1) and box (9), the one side of box (9) is opened, the rigid coupling has a plurality of variable frequency fan (5) on box (9), the air-out end of variable frequency fan (5) is just to the open end of box (9), be equipped with a plurality of current-limiting tube (2) on main exhaust steam pipe (1), be equipped with a plurality of steam distribution pipe (3) side by side in box (9), the other end and the steam distribution pipe (3) intercommunication of current-limiting tube (2), adjacent two the intercommunication has finned tube (4) between steam distribution pipe (3), be close to box (9) bottom finned tube (4) intercommunication has collector tube case (7), collector tube case (7) rigid coupling is inside box (9).

2. An air cooler for a multi-stage inlet according to claim 1, wherein each of the fin tubes (4) is vertically arranged.

3. The multi-stage steam inlet air cooler according to claim 1, wherein a non-condensing steam outlet pipe (6) is arranged at the top end of the liquid collecting pipe box (7).

4. The air cooler for multi-stage steam admission according to claim 1, wherein a U-shaped tube bundle (8) is arranged in the liquid collecting tube box (7), and two ports of the U-shaped tube bundle (8) sequentially penetrate through the liquid collecting tube box (7) and the box body (9).