CN115560613A

CN115560613A - Long service life's compound air cooling system

Info

Publication number: CN115560613A
Application number: CN202211144611.4A
Authority: CN
Inventors: 刘飞; 姚家敏; 吴广峰
Original assignee: Ningbo Zhongjin Petrochemical Co ltd
Current assignee: Ningbo Zhongjin Petrochemical Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-03

Abstract

The invention discloses a long-service-life composite air cooling system which is characterized by comprising an upper finned tube set, a middle spraying water distributor and a lower light pipe set, wherein the upper finned tube set and the lower light pipe set are connected into a whole through an external communicating pipe; the middle spraying water distributor is supplied with water by a circulating water pump connected with the water tank; the water inlet of the upper finned tube assembly and the water outlet of the lower light tube assembly are respectively provided with a control valve, the middle spraying water distributor is provided with a plurality of auxiliary spraying tubes, and the water outlet ends of the auxiliary spraying tubes respectively correspond to the two ends of the middle spraying water distributor. The invention has the advantages of prolonging the service life of the wet cooling tube bundle in the composite air cooling system and delaying the corrosion of the tube bundle.

Description

Long service life's compound air cooling system

Technical Field

The application relates to the technical field of composite air cooling systems, in particular to a wet type air cooling system with long service life.

Background

In petrochemical production, a compound air cooler is commonly used, and the compound air cooler comprises an air cooling part with fins and a wet cooling part for cooling by spraying water through a spray header, for example, in Chinese patent literature, patent No. CN202122920863.9 issued at 31/5/2022, a compound air cooling device comprises air cooling formed by blowing air through a fan and water cooling performed by spraying water through a spray pipe and the spray header, and the spray header is positioned right above a heat exchange coil and below the fan. The compound air cooler has high heat exchange efficiency. However, the tube bundle of the wet cooling part is affected by water quality and internal oil gas, so that the tube bundle is easy to corrode and corrode, the tube bundle leakage is caused, the service life of the composite air cooling equipment is affected, and the overall production process is affected and the production efficiency of a workshop is affected when the composite air cooling equipment is maintained.

Disclosure of Invention

Based on the defects in the prior art, the invention provides the composite air cooling system with long service life, which can prolong the service life of the wet cooling tube bundle in the composite air cooling system and delay the corrosion of the tube bundle.

In order to achieve the above object, the present invention adopts the following technical solutions.

A long-service-life composite air cooling system is characterized in that the composite air cooling system comprises an upper finned tube set, a middle spray water distributor and a lower light pipe set, wherein the upper finned tube set and the lower light pipe set are connected into a whole through an external communicating tube; the middle spray water distributor is supplied with water by a circulating water pump connected with the water tank; the water inlet of the upper finned tube assembly and the water outlet of the lower light tube assembly are respectively provided with a control valve, the middle spraying water distributor is provided with a plurality of auxiliary spraying tubes, and the water outlet ends of the auxiliary spraying tubes respectively correspond to the two ends of the middle spraying water distributor.

The controllable on-off of the whole composite air cooling system is realized through the control valve, and the composite air cooling system is convenient to maintain; the auxiliary spray pipes can spray water to two ends of the lower light pipe assembly, the problem that a spray shielding area is caused by uneven water spray distribution and small water amount at the end parts is solved, corrosion and scaling of pipelines are reduced, and the service life of the wet cooling pipe bundle is prolonged.

Preferably, the composite air cooling system comprises a box plate, and the box plate comprises detachably arranged cover plates at two ends of the composite air cooling system. The apron can be dismantled and set up, makes things convenient for the whole dismouting maintenance of pipe case.

Preferably, the middle spraying water distributor comprises a water inlet main pipe, a plurality of spraying pipes are arranged on the water inlet main pipe, a spraying head is arranged at the lower end of each spraying pipe, and a mounting seat used for fixing the spraying pipes is arranged on the side wall of the water inlet main pipe. The spray water is uniformly distributed through the spray pipe and the spray head.

As preferred, the integrative mount table that is equipped with in upper end of shower, the outside of mount table is equipped with the connection lantern ring, the upper end of connecting the lantern ring is equipped with connects the internal thread, the mount pad is including imbedding the intra-annular connecting pipe of adapter sleeve, be equipped with the cooperation on the periphery wall of connecting pipe and connect the internal screw thread and connect the external screw thread, the connecting pipe is equipped with the locating surface in the upper end outside of connecting the external screw thread, the lower extreme of connecting pipe and the upper end cooperation of mount table, the lower extreme of connecting pipe and the upper end of mount table are equipped with first sealing washer, be equipped with the second sealing washer between mount table lateral wall and the connection lantern ring, be equipped with the third sealing washer between connection lantern ring upper end and the locating surface. The first sealing ring, the second sealing ring and the third sealing ring form three-stage sealing, and the sealing effect is good; the mount table and the adapter sleeve ring form a pressure tight fit, when the adapter sleeve ring is connected with the connecting pipe, the mount table is compressed tightly to the lower extreme of connecting pipe, realize compressing tightly fixedly that can want, the gap between connecting pipe and the mount table is little, therefore the circulation inner wall of shower and connecting pipe is comparatively smooth, and it is sealed to have first sealing washer, effectively avoid oil gas excessive and cause the shower to corrode, and then cause the shower to drop, guarantee the structural reliability of shower.

Preferably, the mounting table is in the shape of a circular truncated cone, and the connecting lantern ring is provided with a circular truncated cone matched with the mounting table. When the mounting table is matched with the connecting sleeve ring, the mounting table can be automatically centered and compressed, and the reliability of the mounting table in place is ensured.

Preferably, the connecting sleeve ring is provided with accommodating grooves corresponding to the second sealing ring and the third sealing ring respectively. The first sealing ring, the second sealing ring and the third sealing ring are convenient to arrange and mount.

Preferably, the outer surfaces of the upper finned tube assembly, the middle spray water distributor and the lower light pipe assembly are provided with zinc coatings. The surface protection of the tube bundle is realized through the zinc coating, the corrosion resistance of the outer side of the tube bundle is improved, the service life of the tube bundle is prolonged, and the reliability of the composite air cooling system is improved.

Preferably, the bottom surface of the sprinkler head is provided with a water distribution surface, the center of the water distribution surface is provided with a spherical cambered surface which is convexly arranged, and the water distribution surface is provided with a plurality of water spraying holes. The concentrated water flow flowing out of the spray pipe is conveniently scattered through the spherical cambered surface, the spraying uniformity of the spray head is improved, and the spray shielding area is effectively avoided.

Preferably, the water inlet end of the auxiliary spraying pipe is connected to the middle of the water inlet main pipe, the outer side wall of the auxiliary spraying pipe is fixedly provided with a limiting ring connected with the spraying pipe, and the outer end of the auxiliary spraying pipe is fixedly connected with the water inlet main pipe. The end setting of intaking of auxiliary spray pipe is at the middle part of the person in charge that intakes, and rivers are stable, make things convenient for rivers to spread auxiliary spray pipe, and auxiliary spray pipe passes through the spacing ring and realizes and the shower between unified fixed for spacing each other between shower and the auxiliary spray pipe, avoid several solitary shower to drop, guarantee the reliability that sprays.

The invention has the following beneficial effects: 1. the controllable on-off of the whole composite air cooling system is realized through the control valve, so that the composite air cooling system is convenient to maintain; 2. the auxiliary spray pipes can spray water to two ends of the lower light pipe assembly, so that the problem of spray shielding areas caused by uneven water spray distribution and small water amount at the end parts is solved, the corrosion and scaling of pipelines are reduced, and the service life of the wet cooling pipe bundle is prolonged; 3. spacing each other between shower and the supplementary shower avoids several solitary showers to drop, guarantees the reliability of spraying.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a top view of the center shower water distributor of the present invention.

Figure 3 is an internal cross-sectional view of the shower of the present invention and other components connected thereto.

FIG. 4 is a schematic view of the stop collar of the present invention.

In the figure: the box plate 1 upper finned tube assembly 2 middle spray water distributor 3 lower light pipe assembly 4 external communicating tube 5 circulating water pump 6 control valve 7 auxiliary spray tube 11 water inlet main tube 12 mounting seat 13 mounting table 14 connecting collar 15 connecting tube 16 spray tube 17 spray head 18 water distribution surface 19 spherical cambered surface 20 spray hole 21 first sealing ring 22 second sealing ring 23 third sealing ring 24 limiting ring 25 first ring 251 second ring 252 rod 253.

Detailed Description

The invention is further illustrated with reference to the figures and the specific embodiments.

In the case of the example 1, the following examples are given,

as shown in fig. 1, 2, 3 and 4, the composite air cooling system with long service life comprises a box plate 1, and the box plate 1 comprises cover plates which are detachably arranged and are positioned at two ends of the composite air cooling system. The composite air cooling system also comprises an upper finned tube set 2, a middle spraying water distributor 3 and a lower light pipe set 4, wherein the outer surfaces of the upper finned tube set 2, the middle spraying water distributor 3 and the lower light pipe set 4 are respectively provided with a zinc coating. The upper finned tube assembly 2 and the lower light pipe assembly 4 are connected into a whole through an external communicating tube 5; the middle spray water distributor 3 is supplied with water by a circulating water pump 6 connected with the water tank; the water inlet of the upper finned tube assembly 2 and the water outlet of the lower light tube assembly 4 are respectively provided with a control valve 7, the middle spraying water distributor 3 is provided with two auxiliary spraying tubes 1711, and the water outlet ends of the two auxiliary spraying tubes 1711 are respectively corresponding to the two ends of the middle spraying water distributor 3. The water inlet end of the auxiliary spraying pipe 1711 is connected to the middle of the main water inlet pipe 12, and the two auxiliary spraying pipes 1711 correspond to the two sides of the main water inlet pipe 12 respectively.

The middle spraying water distributor 3 comprises a water inlet main pipe 12, a plurality of spraying pipes 17 are arranged on the water inlet main pipe 12, a spraying head 18 is arranged at the lower end of each spraying pipe 17, a water distribution surface 19 is arranged on the bottom surface of each spraying head 18, a spherical cambered surface 20 which is convexly arranged is arranged at the center of each water distribution surface 19, and a plurality of water spraying holes 21 are arranged on each water distribution surface 19. The side wall of the water inlet main pipe 12 is provided with a mounting seat 13 for fixing the spray pipe 17. The upper end of the spray pipe 17 is integrally provided with a mounting table 14, the outer side of the mounting table 14 is provided with a connecting lantern ring 15, the mounting table 14 is in the shape of a circular truncated cone, and the connecting lantern ring 15 is provided with a circular truncated cone surface matched with the mounting table 14. The upper end of the connecting sleeve ring 15 is equipped with the connection internal thread, mount pad 13 is including imbedding the connecting pipe 16 in the connecting sleeve ring 15, be equipped with the cooperation on the periphery wall of connecting pipe 16 and connect the internal screw thread and connect the external screw thread, connecting pipe 16 is equipped with the locating surface in the upper end outside of connecting the external screw thread, the lower extreme of connecting pipe 16 and the upper end cooperation of mount table 14, the lower extreme of connecting pipe 16 and the upper end of mount table 14 are equipped with first sealing washer 22, be equipped with second sealing washer 23 between the 14 lateral walls of mount table and the connecting sleeve ring 15, be equipped with third sealing washer 24 between the connecting sleeve ring 15 upper end and the locating surface. The connecting collar 15 is provided with receiving grooves corresponding to the second sealing ring 23 and the third sealing ring 24, respectively.

The outer side wall of the auxiliary spraying pipe 1711 is fixedly provided with a limit ring 25 connected with the spraying pipe, and the outer end of the auxiliary spraying pipe 1711 is fixedly connected with the main water inlet pipe 12. The limiting ring 25 comprises a first ring 251 fixed with the auxiliary spray pipe 1711 and a second ring 252 fixed with the spray pipe 17, the axes of the first ring 251 and the second ring 252 are vertically arranged, the opposite ends of the first ring 251 and the second ring 252 are fixedly connected through a rod piece 253, and the first ring 251 and the second ring 252 both adopt an anchor ear structure and can be locked with an opening of the anchor ear structure through bolts. The upper end of the second ring 252 abuts the lower end of the connector collar 15.

When this application is using, the import of oil gas from the upper right end enters into upper portion finned tube set 2, flows into lower part fluorescent tube set 4 through outside closed tube 5 in, and the middle part sprays water distributor 3 and sprays water to lower part fluorescent tube set 4, realizes the wet cold of oil gas, finally flows out to subsequent chemical production link from the export of right lower extreme.

According to the analysis of the tube bundle leakage condition in a workshop site, the collecting pipe of the lower light pipe set 4 and the collecting pipe sprayed with water are in the same straight line in the vertical direction, and the position is sprayed without water, so that a spraying shielding area is formed, and the other end of the tube bundle is positioned at the tail end of the water inlet main pipe 12, so that the water quantity is small or little, the spraying shielding area is easy to form, the spraying shielding area is seriously scaled, and the straight pipe section with abundant water quantity has corrosion but has better scaling condition compared with the elbow; in addition still there is the shower 17 to drop, cause rivers to go out the water and concentrate, the area that sprays reduces, also the condition of shielding the district appears spraying, shield the district for tangible elimination sprays, the application discloses supplementary shower 1711, can assist the spraying of accomplishing 4 both ends of lower part fluorescent tube set, realize the moisturizing, and supplementary shower 1711 is good with shower 17's associativity, can cooperate fixedly, consequently shower 17 is difficult for droing, further reduce the condition that sprays and shield the district formation, thereby effectively slow down tube bank scale deposit and corruption, the life-span of extension compound air cooling system. This application realizes the controllable break-make of whole compound air cooling system through control valve 7, and the convenience is to the maintenance of compound air cooling system.

Claims

1. A long-service-life composite air cooling system is characterized by comprising an upper finned tube set, a middle spraying water distributor and a lower light pipe set, wherein the upper finned tube set and the lower light pipe set are connected into a whole through an external communicating tube; the middle spraying water distributor is supplied with water by a circulating water pump connected with the water tank; the water inlet of the upper finned tube assembly and the water outlet of the lower light tube assembly are respectively provided with a control valve, the middle spraying water distributor is provided with a plurality of auxiliary spraying tubes, and the water outlet ends of the auxiliary spraying tubes respectively correspond to the two ends of the middle spraying water distributor.

2. The system of claim 1, further comprising a box plate, wherein the box plate comprises a detachable cover plate at each end of the system.

3. The compound air cooling system of claim 1, wherein the middle spray water distributor comprises a main water inlet pipe, the main water inlet pipe is provided with a plurality of spray pipes, the lower ends of the spray pipes are provided with spray heads, and the side wall of the main water inlet pipe is provided with a mounting seat for fixing the spray pipes.

4. The combined air-cooling system with long service life as claimed in claim 3, wherein the upper end of the shower pipe is integrally provided with a mounting table, the outer side of the mounting table is provided with a connecting sleeve ring, the upper end of the connecting sleeve ring is provided with a connecting internal thread, the mounting base comprises a connecting pipe embedded into the connecting sleeve ring, the outer peripheral wall of the connecting pipe is provided with a connecting external thread matched with the connecting internal thread, the connecting pipe is provided with a positioning surface on the outer side of the upper end of the connecting external thread, the lower end of the connecting pipe is matched with the upper end of the mounting table, the lower end of the connecting pipe and the upper end of the mounting table are provided with a first sealing ring, a second sealing ring is arranged between the outer side wall of the mounting table and the connecting sleeve ring, and a third sealing ring is arranged between the upper end of the connecting sleeve ring and the positioning surface.

5. The compound air cooling system with long service life according to claim 4, wherein the mounting platform is in the shape of a truncated cone, and the connecting lantern ring is provided with a truncated cone matched with the mounting platform.

6. The compound air cooling system of claim 4 or 5, wherein the connecting collar has receiving grooves corresponding to the second sealing ring and the third sealing ring, respectively.

7. The compound air cooling system of claim 1 or 3, wherein the upper finned tube assembly, the middle spray water distributor and the lower light pipe assembly are provided with zinc plating on their outer surfaces.

8. The compound air cooling system with long service life according to claim 3 or 4, wherein the bottom surface of the sprinkler head is provided with a water distribution surface, the center of the water distribution surface is provided with a spherical cambered surface which is convexly arranged, and the water distribution surface is provided with a plurality of water spraying holes.

9. The compound air cooling system with long service life according to claim 5, wherein the water inlet end of the auxiliary spray pipe is connected to the middle part of the main water inlet pipe, the outer side wall of the auxiliary spray pipe is fixedly provided with a limit ring connected with the spray pipe, and the outer end of the auxiliary spray pipe is fixedly connected with the main water inlet pipe.