CN211476773U - Vertical falling film formula heat exchanger for closed cooling tower - Google Patents
Vertical falling film formula heat exchanger for closed cooling tower Download PDFInfo
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- CN211476773U CN211476773U CN201922171986.XU CN201922171986U CN211476773U CN 211476773 U CN211476773 U CN 211476773U CN 201922171986 U CN201922171986 U CN 201922171986U CN 211476773 U CN211476773 U CN 211476773U
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Abstract
The utility model relates to the technical field of cooling devices, in particular to a heat exchanger for a vertical falling film type closed cooling tower, which comprises at least one inlet header and one outlet header, wherein the inlet header and the outlet header are vertically arranged; a plurality of vertical serpentine coils which are parallel to each other are arranged between the inlet header and the outlet header, and the inlet and the outlet of each vertical serpentine coil are respectively connected with the inlet header and the outlet header. Because import collector and the vertical setting of export collector, and be provided with the vertical serpentine coil of a plurality of mutual parallels between the two, a plurality of vertical serpentine coil are vertical setting promptly, have solved exist among the prior art because the coil pipe adopts regular triangle to pitch the way to arrange mostly, and the air runner is less, and the resistance is great to the easy scale deposit of windward side influences the heat transfer effect problem.
Description
Technical Field
The utility model relates to a cooling device technical field refers in particular to a vertical falling film formula heat exchanger for closed cooling tower.
Background
The cooling tower is a high-efficiency cooling device, and mainly utilizes the evaporation latent heat of water to take away the heat of process fluid (usually circulating water), so as to complete the cooling of the process fluid and realize the cyclic utilization of spray water.
When the closed cooling tower is used, the process fluid flows in the coil pipe, and heat is conducted out of the pipe through the pipe wall; meanwhile, spray water is sprayed outside the pipe, a water film is formed on the outer wall of the pipe, and a heat exchange process of heat transfer and mass transfer is carried out outside the pipe through spray evaporation under the action of air, so that heat transfer is realized. The closed cooling tower can ensure that the water quality is not polluted, well protects the high-efficiency operation of the main equipment and prolongs the service life. And current closed cooling tower adopts horizontal coil pipe heat exchanger as indirect heating equipment mostly, and the coil pipe adopts smooth metal pipe mostly, but its heat exchange efficiency is lower relatively and material consumption is more, and the cost is higher, and these factors make its use and popularization receive the restriction to a certain extent. In a horizontal coil closed cooling tower, spray water collides with a smooth circular pipe for heat exchange, and when the spray water flow is large, the coil is easy to vibrate and the collision noise is large; moreover, the spray water flows from top to bottom, the cooling water in the pipe flows horizontally, and the spray water and the cooling water flow in a staggered manner; in addition, as shown in fig. 9, most of the coil pipes are arranged in a regular triangle staggered manner, the air flow channel is small, the resistance is large, and the windward side is easy to scale, so that the heat exchange effect is influenced.
The closed cooling tower is widely applied to circulating water systems in various industry fields, and is used as important equipment of the system, and the selection of the scheme directly influences the overall performance and energy consumption of the system. The requirements of small size, light weight, large capacity and high efficiency on the cooling tower are increasingly emphasized.
Therefore, the heat exchanger for the cooling tower in the prior art has the following defects:
1. most of the horizontal coil type heat exchangers are used as heat exchange equipment, and most of the coils are smooth metal round pipes, but the heat exchange efficiency is relatively low, the material consumption is high, and the manufacturing cost is high;
2. because the coil pipes are mostly arranged in a regular triangle staggered mode, air flow channels are small, resistance is large, scaling is easy to occur on the windward side, and the heat exchange effect is affected.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: in order to solve the problems existing in the prior art, the utility model provides a vertical falling film formula heat exchanger for closed cooling tower.
In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:
a heat exchanger for a vertical falling film type closed cooling tower comprises at least one inlet header and one outlet header, wherein the inlet header and the outlet header are vertically arranged; a plurality of vertical serpentine coils which are parallel to each other are arranged between the inlet header and the outlet header, and the inlet and the outlet of each vertical serpentine coil are respectively connected with the inlet header and the outlet header.
As the utility model discloses vertical falling liquid film formula heat exchanger for closed cooling tower's a technical scheme's improvement, every vertical serpentine coil comprises many twist tube discoids, adjacent two centre-to-centre spacing between the twist tube with twist tube outside of tubes major axis distance is equal, two twist tubes between have a plurality of contact point.
As an improvement of the technical proposal of the heat exchanger for the vertical falling film type closed cooling tower, the distance between two adjacent vertical serpentine coils is equal, and the distance is 5-100 mm.
As an improvement of the technical proposal of the heat exchanger for the vertical falling film type closed cooling tower, the packing is arranged between the plurality of twisted tubes.
As the utility model discloses the vertical falling film formula heat exchanger for closed cooling tower's improvement, vertical falling film formula heat exchanger for closed cooling tower is including an import header and an export header, an import header is arranged in the upper portion of vertical falling film formula heat exchanger for closed cooling tower, an export header is arranged in the lower part of vertical falling film formula heat exchanger for closed cooling tower, a plurality of vertical snakelike coil pipe syntropies set up import header with between the export header.
As an improvement of the technical scheme of the heat exchanger for vertical falling film formula closed cooling tower, heat exchanger for vertical falling film formula closed cooling tower is including first import header, second import header and one the export header, the export header is arranged in the lower part of heat exchanger for vertical falling film formula closed cooling tower, first import header with the second import header is all arranged in the upper portion of heat exchanger for vertical falling film formula closed cooling tower, first import header with be provided with first vertical serpentine between the export header, the second import header with be provided with the vertical serpentine of second between the export header, first vertical serpentine with the vertical serpentine of second symmetry sets up to connect respectively the left and right sides of export header.
As an improvement of the technical scheme of the heat exchanger for vertical falling film formula closed cooling tower, heat exchanger for vertical falling film formula closed cooling tower is including first import header, second import header and one the export header, the export header is arranged in the upper portion of heat exchanger for vertical falling film formula closed cooling tower, first import header with the second import header is all arranged in the lower part of heat exchanger for vertical falling film formula closed cooling tower, first import header with be provided with first vertical serpentine between the export header, the second import header with be provided with the vertical serpentine of second between the export header, first vertical serpentine with the vertical serpentine of second sets up symmetrically, and connects respectively the left and right sides of export header.
As an improvement of the technical solution of the heat exchanger for the vertical falling film type closed cooling tower of the present invention, the first vertical serpentine coil is close to the second vertical serpentine coil, and the first vertical serpentine coil is connected to the upper end of the outlet header.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the utility model, because the inlet collecting pipe and the outlet collecting pipe are vertically arranged and a plurality of vertical serpentine pipes which are parallel to each other are arranged between the inlet collecting pipe and the outlet collecting pipe, namely the plurality of vertical serpentine pipes are vertically arranged, the problems that in the prior art, because most of the coil pipes are arranged in a regular triangle staggered mode, an air flow channel is small, the resistance is large, and the windward side is easy to scale, so that the heat exchange effect is influenced are solved;
2. every vertical serpentine coil comprises many twist tubes discoid, and centre-to-centre spacing between two adjacent twist tubes is equal with twist tube outside of tubes major axis distance, has a plurality of contact point between two twist tubes, makes adjacent twist tube support each other through a plurality of contact point, has solved the existence among the prior art when spraying discharge great, and the coil pipe shakes easily to the great problem of collision noise.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 4 is a left side view of FIG. 3;
fig. 5 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 6 is a left side view of FIG. 5;
fig. 7 is a schematic structural diagram of a fourth embodiment of the present invention;
FIG. 8 is a left side view of FIG. 7;
fig. 9 is a schematic view of a prior art heat exchanger provided with coils.
Description of reference numerals: 1-vertical serpentine coil pipe; 2-an inlet header; 3-an outlet header; 4-a first inlet header; 5-a second inlet header; 6-a first vertical serpentine coil; 7-second vertical serpentine coil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1 to 8, a heat exchanger for a vertical falling film closed cooling tower includes at least one inlet header 2 and one outlet header 3, and the inlet header 2 and the outlet header 3 are vertically disposed. A plurality of vertical serpentine coils 1 which are parallel to each other are arranged between the inlet header 2 and the outlet header 3, and the inlet and the outlet of each vertical serpentine coil 1 are respectively connected with the inlet header 2 and the outlet header 3.
The utility model discloses in, because the vertical setting of import collector 2 and export collector 3, also because be provided with a plurality of vertical coiled serpentine 1 that are parallel to each other between import collector 2 and the export collector 3, the vertical setting of vertical coiled serpentine 1 that is parallel to each other of a plurality of pieces is between import collector 2 and export collector 3 promptly. Because a plurality of vertical serpentine coil 1 are vertical, when spraying water, the direction of spraying is from last down spraying, the shower water is from last down moving, the shower water forms the water film that sprays on vertical serpentine coil 1's outer wall, when the flow direction of air is unanimous with the flow direction of the water film that sprays, rely on the drive of air, the flow velocity of water film has been accelerated, the flow velocity of water film is very fast, form turbulent state easily on the surface of heat exchanger, therefore the shower water is thinner at the boundary layer on heat exchange tube surface, make shower water and intraductal cooling medium's heat transfer effect preferred, can practice thrift the shower water use amount, consequently, spray pump power can reduce, make closed cooling tower whole economy, the heat transfer effect is better. Meanwhile, the vertical arrangement of the vertical serpentine coil pipes 1 solves the problems that in the prior art, most of the coil pipes are arranged in a regular triangle staggered mode, air flow channels are small, resistance is large, scaling is easy to occur on the windward side, and the heat exchange effect is affected.
Further, because a plurality of vertical serpentine coil 1 parallel arrangement, according to the quantity of vertical serpentine coil 1 of closed cooling tower heat transfer volume size rational design, the distance between two adjacent is the same, designs according to air flow rate, when above-mentioned distance is great, can insert a small amount of fillers between the two, prevents during the direct drip water collector of shower water, can also increase the area of contact of shower water and circulating air simultaneously, effectively cools off its temperature.
Each vertical snake-shaped coil pipe 1 is formed by a plurality of twisted pipe discs, the center distance between two adjacent twisted pipes is equal to the distance between the long axes outside the twisted pipe, and a plurality of contact points are arranged between the two twisted pipes. Because the cross section of the twisted tubes is oval, when the center distance between the adjacent twisted tubes is equal to the outer long axis of the twisted tubes, a plurality of contact points exist between the adjacent twisted tubes, and the contact points play a role of mutual support, so that the vibration of the heat exchange tube caused by the fact that the sprayed water and the high-speed airflow pass over can be effectively prevented, and the flow rate of the air outside the tube can be improved.
Furthermore, the distance between two adjacent vertical serpentine coils 1 is equal, the distance is 5-100mm, the wind speed is in a normal range, and the air resistance is minimum. Furthermore, all be provided with the filler between many kinks and manage, or be provided with the filler between two adjacent vertical serpentine coil, or every vertical serpentine coil's the outside sets up the filler, prevents during the direct drip water collector of shower water, can also increase shower water and circulating air's area of contact simultaneously, effectively cools off its temperature.
As a first embodiment of the present invention, as shown in fig. 1 and 2, a heat exchanger for a vertical falling film closed cooling tower includes an inlet header 2 and an outlet header 3, the inlet header 2 is disposed on the upper portion of the heat exchanger for a vertical falling film closed cooling tower, the outlet header 3 is disposed on the lower portion of the heat exchanger for a closed cooling tower, a plurality of vertical serpentine coils 1 are disposed between the inlet header 2 and the outlet header 3 in the same direction, a refrigerant enters from the inlet header 2 and flows out along the vertical serpentine coils 1 at the outlet header 3, since the plurality of vertical serpentine coils 1 are vertically disposed, spray water forms a water film on the outer surface of the plurality of vertical serpentine coils 1, when the flow direction of air is the same as the flow direction of the water film, not only the flow speed of the water film is accelerated by air, but also the occurrence of a smaller air flow passage is avoided, the resistance is large, and the windward side is easy to scale, which affects the heat exchange effect.
As a second embodiment of the present invention, as shown in fig. 3 and 4, the heat exchanger for a vertical falling film closed cooling tower includes a first inlet header 4, a second inlet header 5 and an outlet header 3, the first inlet header 4 and the second inlet header 5 are disposed on the upper portion of the heat exchanger for a vertical falling film closed cooling tower, the outlet header 3 is disposed on the lower portion of the heat exchanger for a vertical falling film closed cooling tower, a first vertical serpentine coil 6 is disposed between the first inlet header 4 and the outlet header 3, a second vertical serpentine coil 7 is disposed between the second inlet header 5 and the outlet header 3, the first vertical serpentine coil 6 and the second vertical serpentine coil 7 are symmetrically disposed and connected to the left and right sides of the outlet header 3, respectively, which is suitable for a situation with a large flow rate of a cooling medium, and is beneficial to reducing the flow rate of the cooling medium in a single heat exchange tube by providing two inlets, thereby reducing frictional resistance. Simultaneously, arrange first vertical serpentine coil 6 and second vertical serpentine coil 7 through bilateral symmetry's mode, be favorable to reducing the length of whole heat exchanger to reduce closed cooling tower appearance size, reduce area.
As a third embodiment of the present invention, as shown in fig. 5 and fig. 6, a heat exchanger for a vertical falling film closed cooling tower includes a first inlet header 4, a second inlet header 5, and an outlet header 3, the first inlet header 4 and the second inlet header 5 are disposed at a lower portion of the heat exchanger for the vertical falling film closed cooling tower, the outlet header 3 is disposed at an upper portion of the heat exchanger for the vertical falling film closed cooling tower, a first vertical serpentine coil 6 is disposed between the first inlet header 4 and the outlet header 3, a second vertical serpentine coil 7 is disposed between the second inlet header 5 and the outlet header 3, the first vertical serpentine coil 6 and the second vertical serpentine coil 7 are symmetrically disposed and are respectively connected to left and right sides of the outlet header 3, and compared with the second embodiment, the difference is that the inlet and outlet directions of the heat exchanger for the vertical falling film closed cooling tower are opposite, and have certain space in the middle of controlling coexistence formula serpentine coil 1, this space size is adjustable, through settle the filler in this space, can increase the area of contact of shower water and circulating air, effectively cools off its temperature.
As a fourth embodiment of the present invention, as shown in fig. 7 and 8, on the basis of the third embodiment described above, the first vertical serpentine coil 6 and the second vertical serpentine coil 7 are close to each other, and both the first vertical serpentine coil 6 and the second serpentine coil are connected to the upper end of the outlet header 3. Compared with the third embodiment, the difference of the present embodiment is that the outlets of the left and right vertical serpentine coils 1 are all positioned at the highest position of the outlet header 3, and the gap existing in the third embodiment is not provided, so that the width of the heat exchanger is smaller.
Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Claims (8)
1. A heat exchanger for a vertical falling film type closed cooling tower is characterized by comprising at least one inlet header and one outlet header, wherein the inlet header and the outlet header are vertically arranged;
a plurality of vertical serpentine coils which are parallel to each other are arranged between the inlet header and the outlet header, and the inlet and the outlet of each vertical serpentine coil are respectively connected with the inlet header and the outlet header.
2. The heat exchanger according to claim 1, wherein each of the vertical serpentine coils is formed by a plurality of twisted tubes in a disc shape, and a plurality of contact points exist between two adjacent twisted tubes when a center distance between the two adjacent twisted tubes is equal to a major axis distance between the two adjacent twisted tubes.
3. The heat exchanger according to claim 2, wherein the vertical serpentine coils are equally spaced apart from each other by 5-100 mm.
4. The heat exchanger of claim 2, wherein a filler material is disposed between the plurality of twisted tubes.
5. The heat exchanger according to claim 1, wherein the heat exchanger comprises an inlet header and an outlet header, the inlet header is disposed at an upper portion of the heat exchanger, the outlet header is disposed at a lower portion of the heat exchanger, and the plurality of vertical serpentine coils are disposed in a same direction between the inlet header and the outlet header.
6. The heat exchanger according to claim 1, wherein the heat exchanger comprises a first inlet header, a second inlet header and one outlet header, the outlet header is disposed at a lower portion of the heat exchanger, the first inlet header and the second inlet header are disposed at an upper portion of the heat exchanger, a first vertical serpentine coil is disposed between the first inlet header and the outlet header, a second vertical serpentine coil is disposed between the second inlet header and the outlet header, and the first vertical serpentine coil and the second vertical serpentine coil are symmetrically disposed and connected to left and right sides of the outlet header.
7. The heat exchanger according to claim 1, wherein the heat exchanger comprises a first inlet header, a second inlet header and one outlet header, the outlet header is disposed on an upper portion of the heat exchanger, the first inlet header and the second inlet header are disposed on a lower portion of the heat exchanger, a first vertical serpentine coil is disposed between the first inlet header and the outlet header, a second vertical serpentine coil is disposed between the second inlet header and the outlet header, and the first vertical serpentine coil and the second vertical serpentine coil are symmetrically disposed and connected to left and right sides of the outlet header.
8. The heat exchanger according to claim 7, wherein the first vertical serpentine coil and the second vertical serpentine coil are adjacent and the first vertical serpentine coil and the second vertical serpentine coil are connected to the upper end of the outlet header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922171986.XU CN211476773U (en) | 2019-12-06 | 2019-12-06 | Vertical falling film formula heat exchanger for closed cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922171986.XU CN211476773U (en) | 2019-12-06 | 2019-12-06 | Vertical falling film formula heat exchanger for closed cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211476773U true CN211476773U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922171986.XU Active CN211476773U (en) | 2019-12-06 | 2019-12-06 | Vertical falling film formula heat exchanger for closed cooling tower |
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| Country | Link |
|---|---|
| CN (1) | CN211476773U (en) |
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2019
- 2019-12-06 CN CN201922171986.XU patent/CN211476773U/en active Active
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