CN216645059U

CN216645059U - O-shaped automatic descaling device for closed cooling tower

Info

Publication number: CN216645059U
Application number: CN202220254467.9U
Authority: CN
Inventors: 王怀琛; 王举成; 张慎栋; 乔田华
Original assignee: Shandong Taiwang Cooling Equipment Co ltd
Current assignee: Shandong Taiwang Cooling Equipment Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-05-31
Anticipated expiration: 2032-02-08

Abstract

The utility model discloses an O-shaped automatic descaling device for a closed cooling tower, which mainly comprises a base, a high-pressure plunger pump, a vertical water pipe, a gear, a chain, a frame, a heat exchange pipe bundle, a hose, an electric ball valve, a roller track, a closed O-shaped spray pipe, a roller and a fan-shaped nozzle. According to the utility model, the gear chain drives the closed O-shaped spray pipe, the fan-shaped spray nozzles are arranged on the closed O-shaped spray pipe to clean scale on the surface of the heat exchange pipe bundle, and a descaling agent and a sterilizing algaecide are not required to be additionally added in water, so that the heat exchange pipe bundle body is protected, and the heat exchange pipe bundle is green, environment-friendly and pollution-free. The device has good stability, and the condition that the cleaning is influenced by shaking can not occur. In addition, the O-shaped structure design also achieves all-around cleaning coverage, and the purpose of comprehensive cleaning is achieved.

Description

O-shaped automatic descaling device for closed cooling tower

Technical Field

The utility model relates to a descaling mode, in particular to an O-shaped automatic descaling device for a closed cooling tower.

Background

The closed cooling tower exchanges heat with air outside the pipe and spray water through the coil pipe by the cooling medium to form a closed circulating system, and the pollution caused by direct contact of the cooling medium and the air is avoided, so that the normal use is influenced by the waste of the cooling medium, equipment blockage and other faults. The spraying system can be automatically started when the temperature of the medium is overhigh (exceeds the set temperature), the spraying pump sprays water on the wall of the damp and hot coil pipe to form a water film, and a large amount of heat (latent heat of evaporation) is absorbed through evaporation. With the implementation of national energy-saving and emission-reducing policies and the increasing shortage of water resources, closed cooling towers have been widely applied in industries such as metallurgy, aviation, electric power, chemical industry, machinery, petroleum, food, plastics, rubber and the like in recent years.

In closed cooling tower operation in-process, can rapid vaporization evaporation after the heat exchange tube main part is fallen to the spray liquid, impurity and salinity in the spray liquid then remain on heat exchange tube main part surface, long-term accumulation back heat exchange tube main part surface forms the one deck dirt, along with the thickening gradually of dirt, the heat transfer ability variation of cooling tower heat exchange tube main part reduces the treatment effect of cooling tower. The prior closed cooling tower still has the defects of removing a dirt layer, avoiding the formation of thick dirt and the like. The publication No. CN210922251U discloses a scale removing mechanism of a closed cooling tower, which achieves the effect of scale inhibition by adding a scale remover and a sterilizing algaecide and has the defects of high cost and easy pollution to water; publication No. CN112985162A discloses an automatic scale removal device of closed cooling tower, sprays high pressure water through high pressure fan nozzle and washs heat exchanger tube bank surface incrustation scale, has effectively prevented the accumulation of incrustation scale to need not to add scale remover and disinfect algaecide, green, pollution-free. However, the device causes the shaking of the guide rail due to the overlong length of the guide rail, thereby influencing the safety and reliability in operation; and the multistage belt transmission adopted by the device has the defects of easy abrasion, low transmission efficiency and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides an O-shaped automatic descaling device for a closed cooling tower, which has the advantages of simple mechanism, stable and efficient structure, environmental protection and omnibearing descaling.

The utility model adopts the following technical scheme: the O-shaped automatic descaling device for the closed cooling tower mainly comprises a cooling tower body structure, a chain type transmission assembly, a roller moving part and a water channel assembly, wherein the body structure specifically comprises a base, a water tank, a frame and a heat exchange tube bundle, an upper roller rail, a lower roller rail and a gear transmission shaft are welded in the frame; the chain type transmission assembly mainly comprises a stepping motor, a gear, a chain, a coupler and a transmission shaft; the roller part mainly comprises an upper rail, a lower rail, a closed O-shaped spray pipe and a roller; the waterway assembly mainly comprises a water pipe, a hose, a water pipe fixing frame, an electric ball valve, a water pipe support, a spraying pipe, a fan-shaped nozzle and a high-pressure plunger pump. The water tank is circumferentially welded and fixed on the base, the frame is circumferentially welded and fixed on the water tank, and the heat exchange tube bundle is installed on the supporting beam. The gear is connected to the supporting beam through a coupler and a spline, and a circle of chain is arranged between the two gears. An upper roller track and a lower roller track are welded on the frame; the upper and lower rollers are connected on the track through a closed O-shaped spray pipe; the fan-shaped nozzles are arranged on the periphery of the O-shaped spray pipe, and the upper fan-shaped nozzle and the lower fan-shaped nozzle form an included angle of 60 degrees so as to improve the cooling efficiency and achieve comprehensive cleaning.

Furthermore, closed O type shower surrounds the heat exchanger tube bank on four sides, and the opening is inwards to install fan nozzle, help accomplishing all-round washing.

Furthermore, the roller is connected to the closed O-shaped spray pipe through a shaft, and the closed O-shaped spray pipe is facilitated to reciprocate on the roller guide rail.

Furthermore, the chain is connected with the closed O-shaped spray pipe, so that the closed O-shaped spray pipe is provided with moving power.

Furthermore, the closed O-shaped spray pipe adopts a structural design with symmetrical two sides, which is beneficial to reducing the cleaning time, improving the cleaning efficiency, improving the stability of the device and realizing the stability and high efficiency.

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the utility model, the high-pressure fan-shaped nozzle sprays high-pressure water to clean water scale on the surface of the heat exchange tube bundle, and no scale remover or sterilizing algaecide is required to be added into the water, so that the heat exchange tube bundle body is protected and the green and environment-friendly effect is achieved;

(2) the closed O-shaped spray pipe device is adopted, and the fan-shaped nozzles are surrounded in all directions, so that the comprehensive cleaning is realized, and the descaling efficiency is improved;

(3) the device adopts a symmetrical structure design through a closed O-shaped spray pipe device, thereby well ensuring the stability of the device and avoiding the shaking phenomenon caused by overlong guide rails;

(4) according to the utility model, the scale removal device is started regularly, so that the accumulation of scale can be effectively prevented, and the heat exchange efficiency is improved;

(5) the utility model realizes the maximum cleaning area by forming an included angle of 60 degrees by the upper fan-shaped nozzle and the lower fan-shaped nozzle of the closed O-shaped spray pipe.

(6) The utility model drives the roller to move through the gear chain, and has the advantages of simple structure, convenient maintenance, lower cost, high transmission efficiency and good stability.

Drawings

FIG. 1 is a front view of an O-shaped automatic descaling device for a closed cooling tower according to the present invention;

FIG. 2 is a left side view of the O-shaped automatic descaling device for a closed cooling tower according to the present invention.

In the figure: the device comprises a base 1, a high-pressure plunger pump 2, a water pipe 3, a gear 4, a chain 5, a frame 6, a heat exchange pipe bundle 7, a hose 8, an electric ball valve 9, a roller guide rail 10, a closed O-shaped spray pipe 11, a roller 12, a fan-shaped nozzle 13 and a water tank 14.

Detailed Description

The features and principles of the present invention will be described in detail below with reference to the accompanying drawings, which illustrate embodiments of the utility model and are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, the O-shaped automatic descaling device for the closed cooling tower comprises a base 1, a high-pressure plunger pump 2, a water pipe 3, a gear 4, a chain 5, a frame 6, a heat exchange tube bundle 7, a hose 8, an electric ball valve 9, a roller guide rail 10, a closed O-shaped spray pipe 11, a roller 12, a fan-shaped nozzle 13 and a water tank 14.

As shown in fig. 1, the water tank 14 is circumferentially welded and fixed on the base 1, the frame 6 is circumferentially welded and fixed on the water tank 14, and the heat exchange tube bundle 7 is mounted on the support beam. The frame 6 is welded with roller guide rails 10 from top to bottom, the bottom and the upper part of the closed O-shaped spray pipe 11 are connected with rollers 12 through shafts, and the closed O-shaped spray pipe 11 is installed on the roller guide rails 10 through the rollers 12. Both ends have gear 4 through shaft coupling and splined connection about frame 6, two gears 4 pass through chain 5 and connect, rotary motion is done to two gears 4 under the effect of motor, drives the transmission of chain 5, through bolt threaded connection between closed O type shower 11 and the chain 5, reciprocating linear motion is done to closed O type shower 11 under the effect of chain 5, reciprocating motion of closed O type shower drives gyro wheel 12 and rolls on gyro wheel guide rail 10.

As shown in fig. 2, fan-shaped nozzles 13 are opened around the closed O-shaped shower pipe 11, the high-pressure plunger pump 2 pumps water from the water tank 14 through the filter, high-pressure water is delivered to the high-pressure fan-shaped nozzles 13 through the water pipe 3, the electric ball valve 9 and the hose 8, and the fan-shaped nozzles 13 spray water under the action of water pressure to perform all-directional cleaning.

This kind of automatic scale removal device of closed cooling tower O type, high pressure plunger pump drive cooling medium (demineralized water, oil or other liquid) circulation flow between heat exchanger and the cooling equipment that needs, the shower water sprays evenly on the heat exchanger surface at the water pipe of both sides through the equipartition, form even water film on the heat exchanger surface, cold air gets into by the tower body below, with shower water adverse current through the heat exchanger surface, there are two kinds of heat transfer modes at this in-process, heat-conduction and the heat exchange of shower water evaporation between cold air and the cooling medium promptly, the saturated hot humid air is arranged to the atmosphere by the fan after the absorption heat, remaining shower water flows into the water tank of bottom of the tower lower part, carry to spray system again by the water pump. Reciprocating in this way, the cooling medium in the heat exchanger is cooled down.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the utility model, and various modifications and improvements of the present invention by those skilled in the art without departing from the spirit of the utility model are intended to be covered by the protection scope defined by the claims.

Claims

1. An O-shaped automatic descaling device for a closed cooling tower comprises a base (1), a high-pressure plunger pump (2), a water pipe (3), a gear (4), a chain (5), a frame (6), a heat exchange pipe bundle (7), a hose (8), an electric ball valve (9), a roller guide rail (10), a closed O-shaped spray pipe (11), rollers (12), a fan-shaped nozzle (13) and a water tank (14); the method is characterized in that: the roller guide rail (10) is welded and fixed on the frame (6); the roller guide rail (10) comprises an upper row and a lower row which are respectively arranged along the whole process of the heat exchange tube bundle (7); the closed O-shaped spray pipes (11) are two in number, move on the roller guide rail (10) through the connecting rollers (12) respectively, and are used for achieving the function of automatic water spraying cooling through the transmission of the chains.

2. The closed cooling tower O-shaped automatic descaling device according to claim 1, wherein: 4 rollers (12) are respectively arranged in the upper and lower rows of roller guide rails (10), and gears (4) are respectively arranged on the left and right of the frame (6); the gear (4) and the frame (6) are connected through a shaft and a spline; the two gears (4) are driven by a chain (5).

3. The closed cooling tower O-shaped automatic descaling device according to claim 1, wherein: fan-shaped nozzles (13) are arranged around the closed O-shaped spray pipe (11) and spray water around the heat exchange pipe bundle (7) for cooling; the water outlet pipes at the upper part and the lower part form an angle of 60 degrees.

4. The closed cooling tower O-shaped automatic descaling device according to claim 3, wherein: the closed O-shaped spray pipe (11) adopts a structural design with symmetrical sides.