CN216523357U - Ice melting system for cooling tower - Google Patents
Ice melting system for cooling tower Download PDFInfo
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- CN216523357U CN216523357U CN202122771157.2U CN202122771157U CN216523357U CN 216523357 U CN216523357 U CN 216523357U CN 202122771157 U CN202122771157 U CN 202122771157U CN 216523357 U CN216523357 U CN 216523357U
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- cooling tower
- ice melting
- melting system
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Abstract
The utility model discloses an ice melting system for a cooling tower, which relates to the technical field of water saving of the cooling tower.A filter screen for intercepting water vapor is arranged above a water distributor of the cooling tower; the ice melting system is used for increasing the temperature of the filter screen so as to melt an ice layer on the filter screen, and the ice melting system adopts a heating medium or hot air to exchange heat and increase the temperature of the filter screen. The bottom of the filter screen is provided with a supporting pipe for supporting the filter screen, the ice melting system comprises an inlet pipeline and an outlet pipeline, one end of the inlet pipeline is connected with a heat medium source or a hot air source, the other end of the inlet pipeline is communicated with one end of the supporting pipe, one end of the outlet pipeline is communicated with the other end of the supporting pipe, and the supporting pipe and the filter screen are both made of heat conducting materials. The design of ice-melt system can make the filter screen temperature rise, and then can make the ice sheet on filter screen and the stay tube melt gradually, has solved the frozen problem of jam of filter screen, ensures the normal operation and the function of filter screen.
Description
Technical Field
The utility model relates to the technical field of cooling tower water saving, in particular to an ice melting system for a cooling tower.
Background
The cooling tower causes a large amount of water to be lost because the heat in the circulating water is transferred to the air, mainly by evaporation, and is diffused into the atmosphere. Since the advent of cooling tower products, no technology and method for efficiently collecting evaporated water has been found at home and abroad. Patent application No. CN202110734462.6 discloses a steam-water separation device for a cooling tower, which specifically discloses a steam-water separation device for a cooling tower, which comprises support frames arranged on two sides, a plurality of support pieces arranged between the support frames on two sides, and a static filter screen laid on the support pieces. The above-mentioned patent technique adds one set of design scheme that uses catch water system as the prototype on the basis that does not change the inside original temperature drop form of cooling tower, position installation catch water device between cooling tower filler and fan system, collect gaseous water through addding catch water device, especially the evaporation water, utilize the static filter screen in the device to carry out the separation to gaseous water promptly and collect, the evaporation water enters into static filter screen and collides formation large granule drop of water, large granule drop of water freely falls to collect under the action of gravity afterwards, the water after the collection has been realized recycling through dredging, the cooling tower moisturizing has been reduced, because most steam is collected and is not got into in the atmosphere, "white cigarette" that the cooling tower dryer flows also significantly reduces, thereby reach the mesh of water conservation and white elimination.
However, when the steam-water separation device is used at an ambient temperature below 0 ℃, the filter screen can be frozen, and the filter screen is blocked, so that the steam-water separation device cannot play a role in separating steam.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the present invention proposes the following improvements.
The utility model aims to provide an ice melting system for a cooling tower, wherein a filter screen for intercepting water vapor is arranged above a water distributor in the cooling tower; the ice melting system is used for raising the temperature of the filter screen, and the final purpose is to melt the ice layer on the filter screen and solve the problem that the filter screen cannot normally operate due to icing.
Furthermore, the ice melting system adopts media such as heating media or hot air to directly or indirectly heat exchange and heat the filter screen.
Furthermore, a supporting tube for supporting the filter screen is arranged at the bottom of the filter screen, supporting frames for fixing are arranged at two ends of the supporting tube, and the supporting frames are arranged on a bearing part of the cooling tower.
Furthermore, the ice melting system comprises an inlet pipeline and an outlet pipeline, one end of the inlet pipeline is connected with a heat medium source or a hot air source, the other end of the inlet pipeline is communicated with one end of the supporting pipe, one end of the outlet pipeline is communicated with the other end of the supporting pipe, and the supporting pipe and the filter screen are made of heat conduction materials.
Further, when heating is carried out by adopting a heating medium, the other end of the outlet pipeline is connected back to a heating medium source.
Preferably, the heat medium source is circulating water of the cooling tower, and one end of the inlet pipeline is connected with the circulating water pipeline; furthermore, the other end of the water outlet pipe is communicated to the water collecting tank, and circulating water of the cooling tower is recycled as a heat medium source, so that energy is saved, and the working efficiency of the cooling tower is improved.
According to the technical requirement of the utility model, valves are arranged on the inlet pipeline or/and the outlet pipeline, a pump for driving heat medium transmission is arranged on the inlet pipeline, and a fan for driving hot air transmission is arranged on the inlet pipeline.
The utility model also aims to provide a control system applied to the cooling tower, and particularly, the ice melting system further comprises a control system, a temperature sensor and a differential pressure sensor, wherein the temperature sensor and the differential pressure sensor are arranged on the filter screen, the temperature sensor is used for detecting the temperature of the filter screen, the differential pressure sensor is used for measuring the differential pressure of the upper side surface and the lower side surface of the filter screen, and the control system is electrically connected with the temperature sensor, the differential pressure sensor, the pump, the fan and the valve.
Further, when a plurality of support pipes are provided, at least one communicating pipe member for communicating heat medium or hot air in each support pipe is provided between adjacent support pipes, which is designed to raise the overall temperature of the screen as quickly as possible.
Furthermore, a plurality of holes are formed in the supporting tube, and heat medium or hot air can be discharged from the holes to directly contact with the filter screen and the ice layer for heat exchange.
Preferably, the material of the filter screen is any one of foamed nickel, foamed aluminum, foamed copper, foamed aluminum alloy, filtering sponge, biochemical sponge, activated carbon sponge or carbon fiber sponge.
Compared with the prior art, the utility model at least has the following beneficial effects:
(1) the design of ice-melt system can make the filter screen temperature rise, and then can make the ice sheet on filter screen and the stay tube melt gradually, has solved the frozen problem of jam of filter screen, ensures the normal operation and the function of filter screen.
(2) The ice melting system is reasonable and ingenious in design, the two ends of the supporting pipe are respectively connected with the inlet pipeline and the outlet pipeline, and the heat medium or hot air is transmitted in the pipelines, so that the supporting pipe is used as a supporting part of the filter screen and also used as a heat conducting part in the heat exchange process of the filter screen.
(3) Through setting up the stay tube in the filter screen bottom a plurality ofly to adopt intercommunication pipe fitting intercommunication with adjacent stay tube, the diffusion of the flow of heat medium or hot-blast of being convenient for makes the stay tube heat conduction form "the wire side formula" by "linear formula", and filter screen heat transfer effect promotes greatly.
(4) The control system, the temperature sensor, the differential pressure sensor and the valve are arranged in the ice melting system, so that the ice melting system can be automatically opened, operated and closed conveniently, and the ice melting system has the advantages of intelligent automation, energy consumption saving, convenience in overhauling and maintenance and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic view of the structure of a cooling column in examples 1 and 2;
FIG. 2 is a schematic view of the gas-water separation apparatus in example 1, which is a front view and in which the screen is shown in the right half for clarity, and the support tubes and interconnecting tubes are shown on the inside of the screen on the other side;
FIG. 3 is a schematic view of the structure of a cooling tower in example 3;
FIG. 4 is a schematic view of the structure of a cooling tower in example 4.
Labeled as: 1. a cooling tower; 2. a gas-water separation device; 201. a support frame; 202. supporting a tube; 203. filtering with a screen; 204. intercommunicating pipe fittings; 3. a water distributor; 4. a filler structure; 5. a water collecting tank; 6. a circulating water line; 7. a pipeline inlet; 8. discharging the pipeline; 9. a valve; 10. a control system; 11. a temperature sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments 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 drawings in the embodiments of the present invention.
Example 1
An ice melting system for a cooling tower is shown in figure 1, wherein the cooling tower 1 comprises a gas-water separation device 2, a water distributor 3, a filler structure 4 and a water collecting tank 5 which are arranged from top to bottom inside.
Wherein, the water inlet end of the water distributor 3 outside the cooling tower 1 is connected with a circulating water pipeline 6, and the water distributor 3 is used for sending circulating water to the lower packing structure 4 for heat dissipation.
The filler structure 4 has the function of prolonging the water distribution time of the cooling water and enabling the water distribution of the cooling water to be more uniform.
The water collecting tank 5 is arranged at the bottom in the cooling tower 1 and is used for collecting cooling water and recycling the cooling water.
Referring to fig. 2, the gas-water separation device 2 includes support frames 201 disposed at two sides, support pipes 202 disposed between the support frames 201 at two sides, and a filter screen 203 disposed on the support pipes 202, and the support frames 201 at two sides are fixedly mounted on water collector beams at corresponding sides, which are load-bearing members above the interior of the cooling tower 1. Wherein, filter screen 203 is used for "intercepting" the steam (as arrow mark in figure 1) of rising in-process, the evaporation water carries out physics nature in filter screen 203 after the repeated collision, with the steam collision of micron order form the drop of water of millimeter level, the drop of water of condensation falls back to filler structure 4 or catch basin 5 under the action of gravity afterwards, consequently, steam is not direct in the atmosphere of discharging under the drive of 1 top fan of cooling tower, but is retrieved by gas-water separation device 2, and then reaches the purpose of water conservation.
It should be noted that the operation mode of the filter screen 203 is an open structure above the water distributor 3, and the specific mode depends on the shape of the support frame 201 and the arrangement positions of the plurality of support tubes 202. For example: the cross-sectional shape of the screen 203 may be a "V" shape or a semicircular shape in the background art; other shapes can be set, as long as the function of blocking the water vapor is achieved.
In order to facilitate the filter screen 203 to capture water vapor, the filter screen 203 is made of foam metal or nonmetal foam, wherein the foam metal can be selected from foam nickel, foam aluminum, foam copper or foam aluminum alloy and the like; the non-metal foam can be selected from filter sponge, biochemical sponge, activated carbon sponge or carbon fiber sponge.
Based on the above, in order to solve the problem of icing of the filter screen 203 and ensure normal use of the filter screen 203, the cooling tower 1 is provided with an ice melting system, which includes an inlet pipe 7 and an outlet pipe 8 arranged on one side of the outside of the cooling tower 1, one end of the inlet pipe 7 is connected with a heat medium source, and the other end of the inlet pipe 7 is communicated with the end of one support pipe 202 in the gas-water separation device 2.
On the other side of the cooling tower 1 opposite to the inlet pipe 7, one end of the outlet pipe 8 is communicated with the other end of the support pipe 202, the other end of the outlet pipe 8 is preferably connected back to the heat medium source to form a circulation loop, and the heat medium passes through the support pipe 202 on the gas-water separator 2, is discharged from the outlet pipe 8, returns to the refrigerant source, is heated and is reused.
In addition, in order to facilitate the control and driving of the heating medium, a pump (not shown) for driving the transfer of the heating medium is provided on the inlet line 7, and valves 9 are installed on the inlet line 7 or/and the outlet line 8.
When there are a plurality of support tubes 202, in order to exchange heat between the heat medium and the filter screen 203 as soon as possible, the ice layer on the filter screen 203 is ablated, and the adjacent support tubes 202 are communicated with each other through a plurality of communicating pipes 204 (straight pipes or elbow pipes) to achieve communication of the heat medium in each support tube 202 and wide-range conduction of the temperature of the heat medium at the bottom of the filter screen 203, and the support tubes 202 and the filter screen 203 are made of heat conductive materials, such as: the support tube 202 may be made of heat conductive metal, and the filter mesh 203 may preferably be made of nickel foam, aluminum foam, copper foam, aluminum foam, or the like among the aforementioned metal foams.
The working principle of the ice melting system for the cooling tower in the embodiment is as follows:
by conveying the heat medium in the pipeline, the temperature of the heat medium is melted by the heat conduction of the support pipe 202 and the filter screen 203 to melt the ice layer on the filter screen 203, so that the problems of blockage and abnormal work of the filter screen 203 are solved.
Example 2
The embodiment also discloses an ice melting system for a cooling tower, which is different from the embodiment 1 in that: in the embodiment, the hot air conveying indirect heat conduction filter screen 203 is adopted in the inlet and outlet pipelines 8 to melt the ice layer.
Specifically, in this embodiment, the input end of the inlet pipe 7 is changed to be connected to a hot air source, the output end of the outlet pipe 8 is not limited, and the hot air can be directly discharged into the atmosphere, and in addition, the pump for conveying the heat medium on the inlet pipe 7 is changed to be a fan (not shown).
The working principle of the ice melting system for the cooling tower in the embodiment is as follows:
by conveying hot air in the pipeline, the temperature of the hot air is raised by the heat conduction of the support pipe 202 and the filter screen 203 to the whole temperature of the filter screen 203, so that the purpose of melting the ice layer of the filter screen 203 is achieved.
Example 3
Based on embodiment 1, as shown in fig. 3, in this embodiment, the circulating water (hot water) of the cooling tower 1 is used as a heat medium source, specifically, one end (inlet pipe orifice) of the inlet pipe 7 is connected to the circulating water pipe 6, and one end of the outlet pipe is communicated to the water collecting tank 5.
It should be noted that: under this embodiment scheme, need not additionally to add the pump of drive hot water on advancing pipeline 7, because the pump is just installed on itself on circulating water pipeline 6 among the prior art for drive hot water circulation.
As can be seen from the above, the working principle of the ice melting system for the cooling tower 1 in this embodiment is as follows: the hot water in the circulating water pipeline 6 is transmitted to the supporting pipe 202 through the inlet pipeline 7, and exchanges heat with the filter screen 203 and the ice layer on the filter screen after heat conduction, so that the overall temperature of the filter screen 203 can be gradually increased, the ice layer is melted, and the hot water passes through the gas-water separation device 2 and enters the water collecting tank 5 through the outlet pipe.
The technical scheme of the embodiment has the advantages that: on one hand, the circulating water of the cooling tower 1 is used as a heating medium, so that the problem of icing of the filter screen 203 is solved; on the other hand, through the heat transfer, also cool off circulating water betterly, energy-conserving high-efficient.
Example 4
Based on embodiments 1-3, as shown in fig. 4, in order to facilitate automatic start-up and shut-down of the ice melting system, the present embodiment adds a control system 10, a temperature sensor 11, and a differential pressure sensor (not shown).
Wherein, temperature sensor 11 and differential pressure sensor all set up on filter screen 203, and wherein, temperature sensor 11 is used for surveying the temperature of filter screen 203, and differential pressure sensor is used for measuring the pressure differential of filter screen 203 upper and lower both sides face, and control system 10 and above-mentioned temperature sensor 11, differential pressure sensor, pump, fan, electrically connected such as valve 9.
The working principle of the ice melting system for the cooling tower in the embodiment is as follows:
generally, in winter, when the control system 10 detects that the temperature of the filter screen 203 is below the freezing point and the differential pressure measured by the differential pressure sensor exceeds 20Pa, the control system 10 will automatically open the valve 9 on the pipeline, and the system enters the ice melting state, i.e. the pipeline transmits the heat medium, hot air or hot water, and the ice layer on the filter screen 203 is ablated through heat conduction until the differential pressure measured by the differential pressure sensor approaches 10Pa, so that the ice melting operation is completed, and at this time, the filter screen 203 also recovers the normal operation and function.
It should be noted that: the resistance value of the filter net 203 is about 10Pa in a normal state, and when the resistance value is increased to 2-3 times, the filter net 203 may be in an icing state.
Example 5
Based on embodiments 1-4, the present embodiment is different in that:
a plurality of holes (not shown) are arranged on the support tube 202 or/and the communicating pipe 204, and heat medium or hot air can be discharged from the holes and then directly contacted with the filter screen 203 and the ice layer for heat exchange, so that the purpose of melting the ice layer is achieved.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, it should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as if they were fixed or removable or integrally connected, for example; the connection can be mechanical connection or circuit connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A de-icing system for a cooling tower is characterized in that a filter screen for intercepting water vapor is arranged above a water distributor in the cooling tower; the device is characterized in that the ice melting system is used for raising the temperature of the filter screen so as to melt an ice layer on the filter screen;
the ice melting system adopts a heating medium or hot air to carry out heat exchange and temperature rise on the filter screen;
the utility model discloses a filter screen, including filter screen, ice-melt system, inlet pipe way, outlet pipe way, heat medium source or hot-blast source are connected to inlet pipe way one end, the inlet pipe way other end with stay tube one end intercommunication, outlet pipe way one end and stay tube other end intercommunication, the stay tube all adopts the heat conduction material with the filter screen.
2. The ice melting system for the cooling tower as claimed in claim 1, wherein the heat medium source is circulating water of the cooling tower, and one end of the inlet pipeline is connected with the circulating water pipeline.
3. The ice melting system for a cooling tower of claim 2, wherein the other end of the outlet pipe is connected to a sump.
4. The ice melting system for cooling towers of claim 1, wherein the other end of said outlet line is connected back to a source of heating medium when warmed with heating medium.
5. The ice melting system for cooling towers of claim 1, wherein valves are provided on the inlet or/and outlet lines.
6. The ice melting system for cooling tower as claimed in claim 5, wherein a pump for driving the transfer of the heating medium is provided on the inlet pipe, and a fan for driving the transfer of the hot air is provided on the inlet pipe.
7. The ice melting system for the cooling tower as claimed in claim 6, further comprising a control system, a temperature sensor and a differential pressure sensor, wherein the temperature sensor and the differential pressure sensor are both arranged on the filter screen, the temperature sensor is used for detecting the temperature of the filter screen, the differential pressure sensor is used for measuring the differential pressure of the upper side surface and the lower side surface of the filter screen, and the control system is electrically connected with the temperature sensor, the differential pressure sensor, the pump, the fan and the valve.
8. The ice melting system for cooling towers of claim 1, wherein when a plurality of support tubes are provided, at least one interconnecting tube is provided between adjacent support tubes.
9. The ice melting system for the cooling tower as claimed in claim 1, wherein a plurality of holes are formed in the support tube, and a heating medium or hot air can be discharged from the holes to directly contact with the filter screen and the ice layer for heat exchange.
10. The ice melting system for the cooling tower as claimed in claim 1, wherein the filter screen is made of any one of foamed nickel, foamed aluminum, foamed copper, foamed aluminum alloy, filtered sponge, biochemical sponge, activated carbon sponge or carbon fiber sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122771157.2U CN216523357U (en) | 2021-11-12 | 2021-11-12 | Ice melting system for cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122771157.2U CN216523357U (en) | 2021-11-12 | 2021-11-12 | Ice melting system for cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216523357U true CN216523357U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122771157.2U Active CN216523357U (en) | 2021-11-12 | 2021-11-12 | Ice melting system for cooling tower |
Country Status (1)
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|---|---|
| CN (1) | CN216523357U (en) |
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2021
- 2021-11-12 CN CN202122771157.2U patent/CN216523357U/en active Active
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