CN112985162B - Closed cooling tower automatic descaling device - Google Patents
Closed cooling tower automatic descaling device Download PDFInfo
- Publication number
- CN112985162B CN112985162B CN202011570298.1A CN202011570298A CN112985162B CN 112985162 B CN112985162 B CN 112985162B CN 202011570298 A CN202011570298 A CN 202011570298A CN 112985162 B CN112985162 B CN 112985162B
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- chain
- guide rail
- water
- heat exchange
- chain wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/04—Feeding and driving arrangements, e.g. power operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses an automatic descaling device for a closed cooling tower, which mainly comprises a base, a water tank, a guide rail, a heat exchange tube bundle, a water pipe, a frame, a hose, a motor support, a chain, an idle chain wheel, a spray pipe and chain connecting assembly, a chain wheel, a cross beam, a water pipe fixing frame, a supporting beam, a high-pressure plunger pump, an electric ball valve, a water pipe base, a stepping motor, a spray pipe, a transmission shaft and a fan-shaped nozzle. The high-pressure fan-shaped nozzle sprays high-pressure water to clean water scales on the surface of the heat exchange tube bundle, and a descaling agent and a sterilizing algaecide do not need to be additionally added into the water, so that the heat exchange tube bundle body is protected, and the high-pressure fan-shaped nozzle is green, environment-friendly and pollution-free. Through regularly starting scale removal device, can effectively prevent the accumulation of incrustation scale, realize heat exchange efficiency's promotion.
Description
Technical Field
The invention relates to an automatic descaling device, in particular to an automatic descaling device of a closed cooling tower.
Background
The closed cooling tower arranges the tubular heat exchanger in the tower, and the cooling effect is ensured through the heat exchange of circulated air, spray water and circulating water. Because of closed circulation, the water quality can be ensured not to be polluted, the high-efficiency operation of the main equipment is well protected, and the service life is prolonged. With the implementation of national energy conservation and emission reduction policies and the increasing shortage of water resources, closed cooling towers are widely applied to industries such as metallurgy, aviation, electric power, chemical engineering, machinery, petroleum, food, plastics, rubber and the like in recent years.
At closed cooling tower operation in-process, can rapid vaporization evaporation evaporate 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 descaling closed cooling tower device, which adds a certain amount of scale inhibitor and sterilization algaecide into a dosing tank, thereby playing a certain scale inhibition role, and has the disadvantages of high cost, easy secondary pollution, certain corrosion to pipelines and heat exchangers, and limited descaling effect; publication No. CN109737774A, it discloses an automatic descaling shell and tube heat exchanger, the repacking put through the setting of motor output eccentric rod realize horizontal sliding rod's left and right sides reciprocating motion to strike off the incrustation scale in the heat exchange tube outside, simultaneously through the cooperation of magnet and fixed iron plate, produce the vibration at the in-process of striking off the incrustation scale, promote the incrustation scale to break away from the heat exchange tube, improve heat exchange efficiency, but very easily when the scale removal, also damaged pipe network and heat exchanger body.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the automatic descaling device for the closed cooling tower, which has the advantages of simple structure, easiness in maintenance, environmental friendliness, excellent descaling effect and the like.
The invention discloses an automatic descaling device for a closed cooling tower, which mainly comprises a closed cooling tower body structure, a transmission assembly and a waterway assembly, wherein the body structure specifically comprises a base, a water tank, a frame and a heat exchange tube bundle, a cross beam, a supporting beam and an upright post are welded in the frame, the cross beam divides the space layout of the frame into an upper layer and a lower layer, the frame is distributed in a bilateral symmetry way, and a maintenance channel is reserved in the middle; the transmission assembly comprises a guide rail, a motor bracket, a chain, an idle chain wheel, a stepping motor, a coupler, a transmission shaft and a bearing with a seat; the waterway assembly 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 circumference welded fastening on the base, frame circumference welded fastening is on the water tank, the heat exchanger tube bundle is installed on a supporting beam. The guide rails are arranged in one group every three meters along the heat exchange tube bundle, and each group comprises a front guide rail and a rear guide rail; two rows of rollers are arranged in the guide rail, and a circle of chain is laid on the two rows of rollers; the upper end of the guide rail is provided with an idle chain wheel, and the lower end of the guide rail is provided with a chain wheel; the spray pipes are horizontally fixed on the guide rail chain at the head end and the tail end. The stepping motor is arranged in the middle of the frame.
As a further improvement of the invention, the guide rail surrounds the heat exchange tube bundle on three sides, has an inward opening, and is fixed on the upright post through bolts to prevent the water jet from facing the outside of the cooling tower.
As a further improvement of the invention, the shower pipe is connected with a hose to facilitate the cyclic reciprocating motion of the shower pipe along the guide rail.
As a further improvement of the invention, the spray pipe is provided with a plurality of high-pressure fan-shaped nozzles, which is beneficial to enlarging the cleaning area and improving the descaling efficiency.
As a further improvement of the invention, the transmission shaft connects the front guide rail and the rear guide rail into a group, and a plurality of driving mechanisms are reduced.
The invention has the beneficial effects that:
(1) The high-pressure fan-shaped nozzle sprays high-pressure water to clean water scales on the surface of the heat exchange tube bundle, and a descaling agent and a sterilizing algaecide do not need to be additionally added into the water, so that the heat exchange tube bundle body is protected, and the green and environment-friendly effect is achieved;
(2) According to the invention, the scale removal device is started regularly, so that the accumulation of scale can be effectively prevented, and the heat exchange efficiency is improved;
(3) The invention realizes the integral cleaning and descaling of the heat exchange pipe by the circular reciprocating motion of the spray pipe along the circumferential direction of the guide rail under the condition that the internal space of the closed cooling tower is limited.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of an automatic descaling device for a closed cooling tower according to an embodiment of the present invention.
Fig. 2 is an enlarged view of a structure of a shower pipe connected with a chain according to an embodiment of the present invention.
Fig. 3 is a side view of an automatic descaling device for a closed cooling tower according to an embodiment of the present invention.
Fig. 4 is a schematic view of a guide rail structure provided in an embodiment of the present invention.
FIG. 5 is an enlarged view of a portion of a tip driver according to an embodiment of the present invention.
Fig. 6 is a partially enlarged view of an upper power transmission mechanism according to an embodiment of the present invention.
Fig. 7 is a partially enlarged view of a lower power transmission mechanism according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a high pressure water cleaning system according to an embodiment of the present invention.
Fig. 9 is a three-dimensional schematic diagram of an automatic descaling device for a closed cooling tower according to an embodiment of the invention.
Description of the reference numerals:
1-a base; 2-a water tank; 3-a guide rail; 3-1-roller; 4-a heat exchange tube bundle; 5-a water pipe; 6-a frame; 7-a hose; 8-a motor bracket; 9-a chain; 10-an idler sprocket; 11-connecting the spray pipe and the chain; 11-1-a shower support; 11-2-chain link plate; 12-a sprocket; 13-a cross beam; 14-water pipe fixing frame; 15-a support beam; 16-a high pressure plunger pump; 17-an electric ball valve; 18-a water pipe base; 19-a stepper motor; 20-a spray pipe; 21-a transmission shaft; 22-fan nozzle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 to 9, the automatic closed cooling tower descaling device of the present invention comprises a base 1; a water tank 2; a guide rail 3; 3-1 of a roller; a heat exchange tube bundle 4; a water pipe 5; a frame 6; a hose 7; a motor bracket 8; a chain 9; an idler sprocket 10; the spray pipe and chain connecting assembly 11; a shower pipe support 11-1; a chain connecting plate 11-2; a sprocket 12; a cross beam 13; a water pipe fixing frame 13; a support beam 15; a high-pressure plunger pump 16; an electric ball valve 17; a water pipe base 18; a stepping motor 19; a shower pipe 20; a transmission shaft 21; fan nozzles 22.
As shown in fig. 1, the water tank 2 is circumferentially welded and fixed on the base 1, the frame 6 is circumferentially welded and fixed on the water tank 2, and the heat exchange tube bundle 4 is installed on the support beam. The guide rail 3 surrounds the heat exchange tube bundle 4 on three sides, has inward openings, and is fixed on the upright post of the frame 6 through bolts. The guide rails 3 are arranged in one group every three meters along the heat exchange tube bundle 4, and each group comprises a front guide rail 3 and a rear guide rail 3; the stepping motor 19 is arranged in the middle of the frame and fixed on the motor support 8 through bolts, and the motor support 8 is fixed on the frame 6. Two chain wheels 12 are installed at the output shaft end of the stepping motor 19, the top chain wheels 12 on the left side and the right side are respectively driven, then power is transmitted to the lower end chain wheel 12 in the upper guide rail 3, and then the chain 9 in the guide rail 3 is driven to move. Two ends of the hose 7 are connected with the vertical water pipe 5 and the spray pipe 20. The spraying pipes 20 are horizontally fixed at the head and the tail ends on the guide rail chains 9 and circularly reciprocate along the guide rails 3. The high-pressure plunger pump 16 is fixedly arranged on the base 1, absorbs water from the water tank 2 and provides high-pressure water for the whole descaling device to remove scale.
The structure for connecting the shower pipe and the chain provided by the embodiment of the invention as shown in fig. 2 mainly comprises a shower pipe bracket 11-1 and a chain connecting plate 11-2. The chain connecting plate 11-2 belongs to a chain link in the chain 9, outward flanges are arranged on two sides of the chain, a mounting hole is formed in each outward flange, and the spray pipe support 11-1 is connected with the mounting hole in the chain connecting plate 11-2 through a bolt.
Referring to fig. 3, in a side view of the closed cooling tower automatic descaling device according to the embodiment of the present invention, the horizontal water pipe 5 is fixed to the base 1 through the water pipe base 18, and the transmission shaft 21 passes through the chain wheel 12 in the front and rear guide rails 3 to connect the two guide rails 3 into a group and transmit power from the front guide rail to the rear guide rail. A plurality of high-pressure fan-shaped nozzles 22 are arranged on the spray pipe 20.
As shown in fig. 4, in the guide rail structure provided in the embodiment of the present invention, two rows of rollers 3-1 are installed inside the guide rail 3, and a circle of chain 9 is laid on the two rows of rollers 3-1; the upper end of the guide rail 3 is provided with an idle chain wheel 10, and the lower end is provided with a chain wheel 12; the idle chain wheel 10 is installed on the upper end of the guide rail 3 through bolts, and the chain wheel 12 is installed on the lower end of the guide rail 3 through a transmission shaft 21.
As shown in fig. 5, in the top end driving mechanism provided in the embodiment of the present invention, the output end of the stepping motor 19 is connected to the output shaft through a coupling, and the output shaft is provided with a double-row sprocket to transmit power to the left and right sides through chain transmission.
As shown in fig. 6, the embodiment of the present invention provides an intermediate power transmission mechanism, in which one of the sprockets transmits power transmitted from the top end to the bottom layer through the other of the twin sprockets, and transmits power to the sprocket in the subsequent guide rail through the transmission shaft 21.
As shown in fig. 7, in the bottom layer power transmission mechanism provided by the embodiment of the present invention, the chain 9 transmits power transmitted from the middle layer to the sprocket in the latter guide rail through the transmission shaft 21.
In the high-pressure water cleaning system provided by the embodiment of the invention, as shown in fig. 8, the high-pressure plunger pump 16 pumps water from the water tank 2 through the filter, and high-pressure water is conveyed to the high-pressure fan-shaped nozzles 22 through the water pipe 5, the electric ball valve 17, the hose 7 and the spray pipes 20, and only two groups of spray pipes on one side and two groups of spray pipes on the other side are opened for single descaling.
The above-described embodiments are preferred embodiments of the present invention, and are not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made within the scope of the present invention without departing from the spirit of the present invention.
Claims (2)
1. An automatic descaling device for a closed cooling tower comprises a base (1); a water tank (2); a guide rail (3); a heat exchange tube bundle (4); a water pipe (5); a frame (6); a hose (7); a chain (9); the spray pipe is connected with the chain connecting component (11); a sprocket (12); a water pipe fixing frame (14); a high-pressure plunger pump (16); an electric ball valve (17); a stepping motor (19); a shower (20); a drive shaft (21); a fan nozzle (22); the method is characterized in that: the guide rail (3) surrounds the heat exchange tube bundle (4) on three sides, has an inward opening, and is fixed on an upright post of the frame (6) through a bolt; the guide rails (3) are arranged in one group every three meters along the heat exchange tube bundle (4), and each group comprises a front guide rail and a rear guide rail (3); the stepping motor (19) is arranged in the middle of the frame; two chain wheels (12) are mounted at the output shaft end of the stepping motor (19), the two chain wheels (12) respectively drive the top chain wheels (12) on the left side and the right side, then power is transmitted to the lower chain wheel (12) in the upper guide rail (3), and then the chain (9) in the guide rail (3) is driven to move; two ends of the hose (7) are connected with the vertical water pipe (5) and the spray pipe (20); the head end and the tail end of the spray pipe (20) are horizontally fixed on the guide rail chain (9) and circularly reciprocate along the guide rail (3); the high-pressure plunger pump (16) is fixedly arranged on the base (1), and absorbs water from the water tank (2) to provide high-pressure water for the whole descaling device to remove scale;
two rows of rollers (3-1) are arranged in the guide rail (3), and a circle of chain (9) is laid on the two rows of rollers (3-1); the upper end of the guide rail (3) is provided with an idle chain wheel (10), and the lower end of the guide rail is provided with a chain wheel (12); the idle chain wheel (10) is installed at the upper end of the guide rail (3) through a bolt, and the chain wheel (12) is installed at the lower end of the guide rail (3) through a transmission shaft (21);
the output end of the stepping motor (19) is connected with an output shaft through a coupler, a double-row chain wheel is mounted on the output shaft, power is transmitted to one of the chain wheels (12) in the middle layers of the left side and the right side through chain transmission respectively, the power transmitted from the top end is transmitted to the bottom layer through the other chain wheel in the double-row chain wheel, and the power is transmitted to the chain wheel in the next guide rail through a transmission shaft (21); the chain (9) transmits the power transmitted from the middle layer to a chain wheel in the back guide rail through a transmission shaft (21) in the bottom layer power transmission mechanism.
2. The closed cooling tower automatic descaling device according to claim 1, wherein: the spray pipe and chain connecting component (11) comprises a spray pipe bracket (11-1) and a chain connecting plate (11-2); the chain connecting plate (11-2) belongs to a chain link in the chain (9), outward turned edges are arranged on two sides of the chain, mounting holes are formed in each outward turned edge, and the spray pipe support (11-1) is connected with the mounting holes in the chain connecting plate (11-2) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570298.1A CN112985162B (en) | 2020-12-26 | 2020-12-26 | Closed cooling tower automatic descaling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570298.1A CN112985162B (en) | 2020-12-26 | 2020-12-26 | Closed cooling tower automatic descaling device |
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| Publication Number | Publication Date |
|---|---|
| CN112985162A CN112985162A (en) | 2021-06-18 |
| CN112985162B true CN112985162B (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011570298.1A Active CN112985162B (en) | 2020-12-26 | 2020-12-26 | Closed cooling tower automatic descaling device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114322641A (en) * | 2022-02-08 | 2022-04-12 | 山东泰王冷却设备有限公司 | A closed cooling tower O-type automatic descaling device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040033813A (en) * | 2002-10-16 | 2004-04-28 | 주식회사 포스코 | Cleaning Apparatus for Cooling Tower Nozzle |
| CN201434629Y (en) * | 2009-07-07 | 2010-03-31 | 常州创新给排水设备有限公司 | Cleaning device for heat radiators of indirect air cooling generator set in horizontal arrangement |
| CN110044190A (en) * | 2019-04-12 | 2019-07-23 | 北京朗博科科技发展有限公司 | A kind of enclosed heat exchange equipment of dry-wet integrated tube bank |
| CN210346465U (en) * | 2019-08-08 | 2020-04-17 | 厦门热工环保系统工程有限公司 | Ash removal device of flue gas waste heat recoverer |
| CN211782866U (en) * | 2020-01-18 | 2020-10-27 | 邯郸市绿洲环保设备有限公司 | Closed cooling tower with descaling function |
| WO2020218661A1 (en) * | 2019-04-25 | 2020-10-29 | 비씨태창산업(유) | Wastewater retreatment-based apparatus for automatically cleaning heat exchanger bundle |
-
2020
- 2020-12-26 CN CN202011570298.1A patent/CN112985162B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040033813A (en) * | 2002-10-16 | 2004-04-28 | 주식회사 포스코 | Cleaning Apparatus for Cooling Tower Nozzle |
| CN201434629Y (en) * | 2009-07-07 | 2010-03-31 | 常州创新给排水设备有限公司 | Cleaning device for heat radiators of indirect air cooling generator set in horizontal arrangement |
| CN110044190A (en) * | 2019-04-12 | 2019-07-23 | 北京朗博科科技发展有限公司 | A kind of enclosed heat exchange equipment of dry-wet integrated tube bank |
| WO2020218661A1 (en) * | 2019-04-25 | 2020-10-29 | 비씨태창산업(유) | Wastewater retreatment-based apparatus for automatically cleaning heat exchanger bundle |
| CN210346465U (en) * | 2019-08-08 | 2020-04-17 | 厦门热工环保系统工程有限公司 | Ash removal device of flue gas waste heat recoverer |
| CN211782866U (en) * | 2020-01-18 | 2020-10-27 | 邯郸市绿洲环保设备有限公司 | Closed cooling tower with descaling function |
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