CN209263704U - A kind of closed cooling tower plate fin wet type surface air cooler - Google Patents

Abstract

The utility model discloses a kind of closed cooling tower plate fin wet type surface air cooler, it includes the coil pipe being arranged in fixed frame, and coil pipe inlet and outlet are connected with inlet and outlet pipes, are evenly arranged with fin plate on the coil pipe；It is distributed useful extruding tool on the fin plate and has the hole protrusion hole gone out；Straight pipe on the coil pipe passes through raised hole setting；The flange height in the protrusion hole is 3.2-3.6mm；Venthole is distributed on the fin plate；The venthole is located between raised hole.The surface air cooler cooling effect of the utility model is more preferable, and heat-transfer effect is strong.

Description

A kind of closed cooling tower plate fin wet type surface air cooler

Technical field

The utility model belongs to cooling tower technical field, specially a kind of closed cooling tower plate fin wet type surface air cooler.

Background technique

Existing closed cooling tower generally uses wet type surface air cooler cooling cycle to reduce production cost and tower body size Fluid installs spray pump additional on closed cooling tower, the shower water by means of spray pump circulation sprinkling comes in coil surface evaporation Augmentation of heat transfer, wet type surface air cooler are greatly improved the outer film heat transfer coefficient of coil pipe, significantly increase heat transfer effect.If but wet type surface air cooler Install then fouling and the maintenance extremely inconvenience easily below coil pipe of conventional fin additional, not easy to assemble, later maintenance cost is high, therefore Wet type surface air cooler coil pipe is designed as light pipe more.

Conventional closed cooling tower wet type surface air cooler design such as Fig. 1, entire surface air cooler is by frame 1, coil pipe 2, fixed frame 4, Inlet and outlet pipes 5 form.The PVC board of aperture is fixed in frame 1 with bolt, in the PVC board hole that coil pipe 2 is first passed through to frame 1, Fixed frame 4 is connect with frame 1 with bolt, inlet and outlet pipes 5 are fixed on fixed frame 4 with bolt later and connect coil pipe 2.① Such surface air cooler heat exchange area is smaller, and coil pipe needed for reaching same heat exchange amount is more, and material cost is high；2. whole use is welded into Type, manufacture difficulty is big, and the production cycle is long；3. extremely inconvenient if there is frozen pipe or leakage maintenance, maintenance cost is high, substantially reduces The service life of surface air cooler.

Utility model content

The purpose of this utility model be in view of the above problems, provide a kind of closed cooling tower plate fin wet type surface air cooler, Its cooling effect is more preferable, and heat-transfer effect is strong.

In order to achieve the above object, the technical solution adopted in the utility model is: a kind of closed cooling tower plate fin wet type Surface air cooler, it includes the coil pipe being arranged in fixed frame, and coil pipe inlet and outlet are connected with inlet and outlet pipes, are uniformly arranged on the coil pipe There is fin plate；It is distributed useful extruding tool on the fin plate and has the raised hole gone out；Straight pipe on the coil pipe passes through Raised hole setting；The flange height in the protrusion hole is 3.2-3.6mm；Venthole is distributed on the fin plate；The ventilation Hole is located between raised hole.

Further improvement of the utility model, the venthole are distributed in fin plate outlet air end, and air intake does not have.

Further improvement of the utility model is opened vertically there are two notch on the flange in the protrusion hole.

The flange of further improvement of the utility model, the protrusion hole is semicircular ring shape, and semicircular ring bottom is provided with Notch.

Further improvement of the utility model, the venthole are string configuration.

The utility model has the beneficial effects that

1, raised hole is set and improves property easy for installation so that the spacing between fin plate is fixed, when spacing of fin reaches When 3.2-3.6mm, surface tension of liquid is less than the gravity of liquid itself, and cooling water cannot rest between two fins, water flow with Cooling windage is small, plays good cooling effect；

2, fin back segment region namely outlet air end open stomata can rough air, prevent the development in boundary layer, promote to flow Air-flow through aperture generates whirlpool, and flow regime is made to be transitioned into turbulent flow, the heat transfer on enhanced fin surface, slotted hole in advance by laminar flow Relatively round hole surface porosity is larger, and air-flow " whirlpool source " is more, can effectively reduce critical Reynolds number, proposes turbulent area heat transfer Height, the fin convection transfer rate for being provided with slotted hole is significantly improved compared to non-porous fin and windage improves seldom, enhanced heat exchange effect Fruit.

Detailed description of the invention

Fig. 1 is traditional condenser structure schematic diagram used for cooling tower；

Fig. 2 is the overall structure diagram of the utility model；

Fig. 3 is the mounting structure schematic diagram of fin plate in the utility model；

Fig. 4 is the concrete structure schematic diagram of fin plate；

Fig. 5 is part A enlarged structure schematic diagram in Fig. 4；

Fig. 6 is the main view opened vertically on raised hole there are two notch；

Fig. 7 is the cross-sectional view opened vertically on raised hole there are two notch；

Fig. 8 is that the flange in raised hole is semicircle ring structure and the structural schematic diagram for being provided with notch；

In figure: 1, frame；2, coil pipe；3, elbow；4, fixed frame；5, inlet and outlet pipes；6, pipe is direct；7, fin plate；8, it holds Face sealing plate；9, raised hole；10, venthole；11, notch.

Specific embodiment

In order to enable those skilled in the art to better understand the technical solutions of the present invention, with reference to the accompanying drawing to this reality Be described in detail with novel, the description of this part be only it is exemplary and explanatory, should not be to the protection scope of the utility model There is any restriction effect.

As shown in Fig. 2-Fig. 8, the specific structure of the utility model are as follows: a kind of closed cooling tower plate fin wet type table is cold Device, it includes the coil pipe 2 being arranged in fixed frame 4, and the inlet and outlet of coil pipe 2 are connected with inlet and outlet pipes 5, uniformly set on the coil pipe 2 It is equipped with fin plate 7；It is distributed useful extruding tool on the fin plate 7 and has the raised hole 9 gone out；Straight tube on the coil pipe 2 Section passes through raised hole 9 and is arranged；The flange height in the protrusion hole 9 is 3.2-3.6mm；Venthole is distributed on the fin plate 7 10；The venthole 10 is located between raised hole 9.

As shown in figure 4, preferred one embodiment, the venthole 10 is distributed in 7 outlet air end of fin plate, and air intake does not have Have.

As shown in fig. 6-7, preferred one embodiment is opened vertically there are two notch 11 on the flange in the protrusion hole 9.Two A notch 11 can prevent raised hole flanging from completely enclosing coil pipe, and extraneous shower water energy is promoted to pass through notch 11 and coil pipe table Face directly contacts, and improves heat transfer effect.

As shown in figure 8, preferred one embodiment, the flange in the protrusion hole 9 is semicircular ring shape, and semicircular ring bottom It is provided with notch 11.After semicircle ring structure, raised hole 9 can be made quickly to accumulate shower water, while the notch of bottom can be released again Shower water after release heat, improves heat transfer effect.

As illustrated in figures 4-5, preferred one embodiment, the venthole 10 are string configuration.

Fin plate 7 is made by 1mm metal sheet below, can be used carbon steel sheet or aluminium sheet, be changed needed for comprehensive closed cooling tower Depending on heat and material cost analysis compare, the fin plate at both ends is end face sealing plate 8, determines its plate by surface air cooler structural strength Thickness, common enclosed tower surface air cooler is by that can meet structural strength after 5mm carbon steel sheet bending.

As shown in figure 5, going out raised hole with piercing and flanging mold on fin plate 7 and end face sealing plate 8.Height of projection 3.2- 3.6mm because water has surface tension of liquid, when spacing of fin is less than 3.2mm, in cool water shower to fin after, due to The effect of surface tension of liquid, water will stay between two fins, and the big and cooling windage of resistance to water-flow is excessive, lead to cooling effect Difference.When spacing of fin reaches 3.2-3.6mm, surface tension of liquid is less than the gravity of liquid itself, and cooling water cannot rest on Between two fins, water flow and cooling windage are small, play good cooling effect, when protrusion is greater than 3.6mm, first is that because of plate thickness Spend it is thin cause piercing and flanging mold to be unable to reach height of projection, second is that spacing senior general reduces number of fins to reducing heat-transfer surface Product.

In fork row's equilateral triangle spacing arrangement, fork arrangement, which is set, arranges airflow reflux region overlay face compared with in-line arrangement in raised hole 9 Product is small, and flowing mixing is abundant;Secondly in turbulence state when the protrusion that fork arrangement is set may make water flow to flow through fin surface, reinforcing is changed Heat, and spray water flow path and moisture film cover time are extended, keep heat exchange more evenly abundant；Boss can induce air-flow simultaneously Vortex flow is generated to enhance fin heat transfer.

The outer air-flow of tower is passed through from the gap between fin plate from outside to inside, namely is flowed into from the air intake of fin plate, outlet air End outflow, when flowing through surface cooler fin, it is laminar flow that air flow condition is gradually developed by turbulent flow, and windage increases, and temperature raising leads to wing Piece second half section region heat transfer deterioration, fin back segment regional opening can rough air, prevent the development in boundary layer, promote to flow through small The air-flow in hole generates whirlpool, and flow regime is made to be transitioned into turbulent flow in advance by laminar flow, the heat transfer on enhanced fin surface, and slotted hole is relatively round Hole surface porosity is larger, and air-flow " whirlpool source " is more, can effectively reduce critical Reynolds number, improves turbulent area heat transfer, The fin convection transfer rate for being provided with slotted hole is significantly improved compared to non-porous fin and windage improves seldom, therefore later half in fin Duan Kaiyou slotted hole namely venthole 10 carry out enhanced heat exchange.

It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic Element.

Specific case used herein is expounded the principles of the present invention and embodiment, above example Illustrate the method and its core concept for being merely used to help understand the utility model.The above is only the preferred of the utility model Embodiment, it is noted that due to the finiteness of literal expression, and objectively there is unlimited specific structure, for this technology For the those of ordinary skill in field, without departing from the principle of this utility model, several improvement, retouching can also be made Or variation, above-mentioned technical characteristic can also be combined in the right way；These improve retouching, variation or combination, or not It is improved that the conception and technical scheme of utility model are directly applied into other occasions, it is regarded as the protection of the utility model Range.

Claims (5)

1. a kind of closed cooling tower plate fin wet type surface air cooler, it includes the coil pipe (2) being arranged in fixed frame (4), coil pipe (2) inlet and outlet are connected with inlet and outlet pipes (5), which is characterized in that are evenly arranged with fin plate (7) on the coil pipe (2)；The wing It is distributed useful extruding tool in sheet (7) and has the raised hole (9) gone out；Straight pipe on the coil pipe (2) passes through raised hole (9) it is arranged；The flange height of the protrusion hole (9) is 3.2-3.6mm；Venthole (10) are distributed on the fin plate (7)；Institute Venthole (10) are stated to be located between raised hole (9).

2. a kind of closed cooling tower plate fin wet type surface air cooler according to claim 1, which is characterized in that the ventilation Hole (10) is distributed in outlet air end on fin plate (7), and air intake does not have.

3. a kind of closed cooling tower plate fin wet type surface air cooler according to claim 1, which is characterized in that the protrusion There are two being opened vertically on the flange in hole (9) notch (11).

4. a kind of closed cooling tower plate fin wet type surface air cooler according to claim 1, which is characterized in that the protrusion The flange in hole (9) is semicircular ring shape, and semicircular ring bottom is provided with notch (11).

5. a kind of closed cooling tower plate fin wet type surface air cooler according to claim 1, which is characterized in that the ventilation Hole (10) is string configuration.