CN217604730U - Steam recovery device of circulating cooling tower - Google Patents
Steam recovery device of circulating cooling tower Download PDFInfo
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- CN217604730U CN217604730U CN202221493427.6U CN202221493427U CN217604730U CN 217604730 U CN217604730 U CN 217604730U CN 202221493427 U CN202221493427 U CN 202221493427U CN 217604730 U CN217604730 U CN 217604730U
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Abstract
The utility model discloses a vapor recovery device of a circulating cooling tower, which comprises a vapor discharge port and a fan which are arranged at the top of the cooling tower; a heat exchange mechanism is arranged on the steam discharge port; the heat exchange mechanism is used for condensing the rising steam and recycling the steam into a circulating water tank of the cooling tower. The beneficial effects of the utility model are that: the problem that in the existing circulating cooling, a large amount of saturated steam is discharged into the atmosphere from the top under the action of a fan after air is fed from the bottom of a cooling tower and exchanges heat with hot water in the operation process is solved, on one hand, the waste of water resources is caused, and on the other hand, certain influence is caused on the environment; simultaneously the moisture of evaporating can be understood as the pure water at the heat transfer in-process, and along with the great circulating water pond water of evaporation capacity is constantly concentrated, and then quality of water constantly worsens and leads to power plant's heat exchange equipment scale deposit fast, heat exchange efficiency reduces, and then leads to the problem that the unstable generating efficiency of unit operation is low.
Description
Technical Field
The utility model relates to a circulative cooling tower vapor recovery technical field, concretely relates to circulative cooling tower vapor recovery unit.
Background
The circulating cooling tower is mainly applied to the fields of air-conditioning cooling systems, power generation, steam turbines, aluminum profile processing, air compressors, industrial water cooling and the like. As the air in the cooling tower passes upwardly through the fill, the water moves downwardly. As the cross-flow cooling tower air moves horizontally through the fill, the water moves downward.
The cooling tower is a heat sink, so that the water to be cooled is cooled in the tower mainly by means of the evaporative cooling effect of the water. In order to fully utilize water resources, the load of a production line fresh water supply pipe network and reduce the operation cost, cooling water for a condenser of a thermal power plant is recycled by adopting a cooling tower for treatment.
The cooling tower utilizes a natural ventilation or mechanical ventilation method to cool the sprayed hot water. Cooling towers are widely used in cooling systems of thermal power plants. The temperature of water is increased after heat exchange in a condenser and other heat exchange equipment, hot water is pumped to the top of the cooling tower by a water pump, the hot water is uniformly sprayed to the packing layer by a nozzle to be contacted with air flowing from bottom to top, the temperature of the water is reduced, the water is required to be uniformly sprayed on the packing layer, or a uniform water film is formed on the surface of the packing layer, so that the contact surface of the water and the air is increased, the contact time is prolonged, and good conditions are created for mass transfer and heat transfer in the cooling tower. After the air is mass-transferred and heat-transferred, its temp. is raised, water content is increased, and when the tower top is close to saturation state, it is discharged into atmosphere. As a result, part of the water is evaporated, absorbing the latent heat of vaporization, lowering the temperature, and at the same time, the air comes into contact with the water, cooling the water, both of which lower the circulating water temperature.
However, the existing circulating cooling tower has the following disadvantages:
in operation, as the inlet air at the bottom of the cooling tower exchanges heat with the hot water, a large amount of saturated steam is discharged into the atmosphere from the top under the action of the fan, on one hand, the waste of water resources is caused, and on the other hand, certain influence is caused on the environment; meanwhile, the water evaporated in the heat exchange process can be understood as pure water, the water in the circulating water pool is continuously concentrated along with the larger evaporation amount, and the water quality is continuously deteriorated. According to the water quality test result, the calcium hardness of the circulating water continuously concentrated in the water collecting pool of the circulating cooling tower reaches 9.6mmol/l (the standard requirement is below 8 mmol/l), the conductivity reaches 2100us/cm (the standard requirement is below 2000 us/cm), and the concentration rate reaches 3.65 (the standard requirement is below 3). Under the condition of the water quality, the heat exchange equipment of the power plant scales quickly, the heat exchange efficiency is reduced, and further the problem of low generating efficiency caused by unstable operation of the unit is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that in the prior circulating cooling, a large amount of saturated steam is discharged into the atmosphere from the top under the action of a fan after the heat exchange between the inlet air at the bottom of the cooling tower and the hot water is carried out, on one hand, the waste of water resources is caused, and on the other hand, certain influence is caused on the environment; simultaneously can understand the pure water at the moisture of heat transfer in-process evaporation, along with the evaporation capacity is big more the circulating water pond water is constantly concentrated, and then quality of water constantly worsens and leads to the power plant's heat exchange equipment scale deposit fast, heat exchange efficiency reduces, and then leads to the unstable generating efficiency low problem of unit operation, provides a circulative cooling tower steam recovery device.
The purpose of the utility model is realized through the following technical scheme: a vapor recovery device of a circulating cooling tower comprises a vapor discharge port and a fan which are arranged at the top of the cooling tower; a heat exchange mechanism is arranged on the steam discharge port; the heat exchange mechanism is used for condensing the rising steam and recycling the steam into a circulating water tank of the cooling tower;
furthermore, one side of the heat exchange mechanism is connected to a circulating pump of the cooling tower through a water inlet pipe; the other side of the heat exchange mechanism is connected to a circulating water tank in the cooling tower through a water outlet pipe;
further, the heat exchange mechanism comprises a heat exchange box body and heat exchange tube bundles which are mutually communicated; the heat exchange tube bundles are arranged on the peripheral surface and the top surface of the heat exchange box body at intervals;
further, the water inlet pipe is communicated with the heat exchange pipe bundle; the water outlet pipe is communicated with the heat exchange pipe bundle;
further, the heat exchange tube bundle positioned on the top surface of the heat exchange box body is obliquely arranged;
furthermore, a steam outlet is reserved on the top surface of the heat exchange box body;
further, a water collecting tank is arranged at the bottom of the heat exchange box body; the water collecting tank is communicated with the circulating water tank through a falling channel;
the further technical scheme is that the circulating water pump is also connected with heat exchange equipment of a power plant.
The utility model has the advantages of it is following:
1. the heat exchange mechanism is arranged on a steam discharge port of the circulating cooling tower, upward steam is condensed by the heat exchange mechanism and is recycled into the circulating water tank for reuse, so that waste of water resources is reduced, and only a small amount of steam is discharged from the upper part of the heat exchange mechanism after the steam is recycled, so that the influence on the environment is reduced;
2. performing dry top and bottom year cultivation on the transformed circulating water cooling tower according to the calculation, wherein the steam recovery rate of the transformed circulating water cooling tower is about 50%, performing dry top and bottom year cultivation on the transformed circulating water cooling tower according to the original designed evaporation capacity of 20 m/h, and performing dry top and bottom year cultivation on the transformed circulating water cooling tower at about 7 ten thousand m;
3. the heat exchange mechanism condenses the steam and then recovers the condensed steam into a circulating water tank in the circulating cooling tower, so that the gradual deterioration of water quality is avoided, and the problems of low heat exchange efficiency and unstable unit operation caused by the influence on heat exchange equipment of a power plant are avoided;
4. the utility model discloses the cooling water of preferred heat transfer mechanism comes from circulation cold tower self cooling water circulating pump export, and its temperature has nearly 30 ℃ of difference in temperature at 25 ℃, and the steam that goes out with the heat transfer in the circulative cooling tower, consequently reaches the effect that steam condensation was retrieved, does not have other water and energy consumptions newly-increased.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic structural diagram of the heat exchange mechanism.
Fig. 4 is a partial structural plan view of the heat exchange mechanism.
In the figure: 1. a steam discharge port; 2. a fan; 3. a heat exchange mechanism; 4. a circulating water tank; 5. a water inlet pipe; 6. a cooling circulation pump; 7. a water outlet pipe; 8. a heat exchange box body; 9. a heat exchange tube bundle; 10. a water collection tank; 11. a drop passage; 12. provided is a power plant heat exchange device.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, or the directions or positional relationships that the skilled person usually understand, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1: as shown in fig. 1 to 4, a vapor recovery device of a circulating cooling tower comprises a vapor discharge port 1 and a fan 2 which are arranged at the top of the cooling tower; the steam discharge port 1 is provided with a heat exchange mechanism 3; the heat exchange mechanism 3 is used for condensing and recycling the ascending steam into a circulating water tank 4 of the cooling tower; in the embodiment, the fan 2 is a conventional commercially available product, and any reasonable model structure and suitable connection and installation mode can be selected according to needs; the steam discharge port 1 can be provided with a plurality of, can be established ties through heat exchange mechanism 3, can select any reasonable connection and mounting means as required. And the heat exchange mechanisms can also be independently arranged according to requirements and are respectively provided with a set of heat exchange mechanism 3.
The heat exchange mechanism 3 is arranged on the steam discharge port 1 of the circulating cooling tower, upward steam is condensed through the heat exchange mechanism 3 and is recycled into the circulating water tank 4 for reuse, so that waste of water resources is reduced, only a small amount of steam is discharged from the upper part of the heat exchange mechanism 3 after the steam is recycled, and the influence on the environment is reduced; performing dry top and bottom year cultivation on the transformed circulating water cooling tower according to the calculation, wherein the steam recovery rate of the transformed circulating water cooling tower is about 50%, performing dry top and bottom year cultivation on the transformed circulating water cooling tower according to the original designed evaporation capacity of 20 m/h, and performing dry top and bottom year cultivation on the transformed circulating water cooling tower at about 7 ten thousand m; the heat exchange mechanism 3 condenses the steam and then recovers the condensed steam into a circulating water tank 4 in a circulating cooling tower, thereby being beneficial to avoiding gradual deterioration of water quality and avoiding the problems of low heat exchange efficiency and unstable unit operation caused by influence on the heat exchange equipment 12 of the power plant; the utility model discloses the cooling water of preferred heat transfer mechanism 3 comes from circulation cold tower self cooling water circulating pump export, and its temperature has nearly 30 ℃ of difference in temperature at 25 ℃, and the steam that goes out with the heat transfer in the circulation cooling tower, consequently reaches the effect that steam condensation was retrieved, does not have other water and energy consumptions newly-increased.
One side of the heat exchange mechanism 3 is connected to a circulating pump of the cooling tower through a water inlet pipe 5; the other side of the heat exchange mechanism 3 is connected to a circulating water tank 4 in the cooling tower through a water outlet pipe 7; in this embodiment, the cooling water in the heat exchange mechanism 3 passes through the inlet tube 5 and the cooling tower circulating pump, the source and the outlet of the cooling water circulating pump of the circulating cooling tower self, the water temperature is 25 ℃, the temperature difference is nearly 30 ℃ with the steam that the heat exchange goes out in the circulating cooling tower, therefore, the effect of steam condensation recovery is achieved, no other newly-added water and energy consumption are needed, and the cooling water is returned to the cooling tower through the outlet tube 7 after the heat exchange in the heat exchange mechanism 3 is completed, thereby being beneficial to reuse.
The heat exchange mechanism 3 comprises a heat exchange box body 8 and a heat exchange tube bundle 9 which are communicated with each other; the heat exchange tube bundles 9 are arranged on the peripheral surface and the top surface of the heat exchange box body 8 at intervals; in the embodiment, the heat exchange box body 8 and the heat exchange tube bundle 9 are made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to requirements; in the embodiment, the heat exchange tube elements are arranged at intervals of 5-15cm in the heat exchange box body 8, and when cooling water passes through the heat exchange tube bundles 9, cold air curtains are formed among the heat exchange tube bundles 9, so that steam can be better captured and condensed into water; the heat exchange tube bundle 9 is arranged on the periphery and the top surface of the heat exchange box body 8, so that the heat exchange effect is improved; in this embodiment, the heat exchange tube bundles 9 are communicated with each other in a conventional manner, which is beneficial to cooling water passing through all the heat exchange tube bundles 9.
The water inlet pipe 5 is communicated with the heat exchange pipe bundle 9; the water outlet pipe 7 is communicated with a heat exchange pipe bundle 9; in this embodiment, the water inlet pipe 5 and the water outlet pipe 7 are respectively communicated with the heat exchange tube bundle 9, which is beneficial for the inlet and outlet of cooling water,
The heat exchange tube bundle 9 positioned on the top surface of the heat exchange box body 8 is obliquely arranged; in this embodiment, the heat exchange tube bundle 9 on the top surface of the heat exchange box body 8 is obliquely arranged, so that the steam is condensed into water and falls down from the side wall of the obliquely inclined heat exchange box body 8.
A steam outlet is reserved on the top surface of the heat exchange box body 8; in this embodiment, a steam discharge inlet is reserved at the top of the heat exchange box body 8, which is beneficial to discharging a small amount of uncondensed steam.
A water collecting tank 10 is arranged at the bottom of the heat exchange box body 8; the water collecting tank 10 is communicated with the circulating water tank 4 through a falling channel 11; in this embodiment, steam condenses and separates out, on attaching to heat exchanger tube bundle 9, and when water droplet satisfied the condition that drops on heat exchanger tube bundle 9, the water droplet flows to the water catch bowl 10 of heat transfer box 8 bottom along the tube bank surface from heat exchanger tube bundle 9 in, and the water of collecting in the water catch bowl 10 gets back to and recycles in the circulating water pond 4 pond through whereabouts passageway 11.
The circulating water pump is also connected with a power plant heat exchange device 12; in this embodiment, the circulating water pump not only uses the cooling water for the heat exchange mechanism 3 as the cooling water for steam condensation, but also delivers the cooling water to the battery heat exchange equipment for heat exchange in the power plant.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A vapor recovery device of a circulating cooling tower comprises a vapor discharge port and a fan which are arranged at the top of the cooling tower; the method is characterized in that: a heat exchange mechanism is arranged on the steam discharge port; the heat exchange mechanism is used for condensing the rising steam and recycling the steam into a circulating water tank of the cooling tower.
2. The hydronic tower vapor recovery unit according to claim 1, wherein: one side of the heat exchange mechanism is connected to a circulating pump of the cooling tower through a water inlet pipe; and the other side of the heat exchange mechanism is connected to a circulating water tank in the cooling tower through a water outlet pipe.
3. The hydronic tower vapor recovery unit according to claim 2, wherein: the heat exchange mechanism comprises a heat exchange box body and heat exchange tube bundles which are mutually communicated; the heat exchange tube bundles are arranged on the circumferential surface and the top surface of the heat exchange box body at intervals.
4. The hydronic tower vapor recovery device of claim 3, wherein: the water inlet pipe is communicated with the heat exchange pipe bundle; and the water outlet pipe is communicated with the heat exchange pipe bundle.
5. The recycle cooling tower vapor recovery unit of claim 4, wherein: the heat exchange tube bundle positioned on the top surface of the heat exchange box body is obliquely arranged.
6. The hydronic tower vapor recovery device of claim 5, wherein: and a steam outlet is reserved on the top surface of the heat exchange box body.
7. The hydronic tower vapor recovery device of claim 5, wherein: a water collecting tank is arranged at the bottom of the heat exchange box body; the water collecting tank is communicated with the circulating water tank through a falling channel.
8. The hydronic tower vapor recovery unit according to claim 2, wherein: the circulating pump is also connected with power plant heat exchange equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221493427.6U CN217604730U (en) | 2022-06-15 | 2022-06-15 | Steam recovery device of circulating cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221493427.6U CN217604730U (en) | 2022-06-15 | 2022-06-15 | Steam recovery device of circulating cooling tower |
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| Publication Number | Publication Date |
|---|---|
| CN217604730U true CN217604730U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221493427.6U Active CN217604730U (en) | 2022-06-15 | 2022-06-15 | Steam recovery device of circulating cooling tower |
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| CN (1) | CN217604730U (en) |
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2022
- 2022-06-15 CN CN202221493427.6U patent/CN217604730U/en active Active
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