Adjustable circulating water pipeline system

Abstract

The embodiment of the invention provides an adjustable circulating water pipeline system. The adjustable circulating water pipeline system comprises a water supplementing unit, a cooling water circulating unit and a chilled water circulating unit. When the air temperature does not exceed a preset value, circulating water can be cooled through a cooling tower of the cooling water circulating unit; when the air temperature is larger than a preset value, circulating water can be cooled through a refrigerating machine of the chilled water circulating unit, and the cooling effect is effectively guaranteed; a water treatment device is arranged on a water supply pipeline of the water replenishing unit, so that the water supply hardness can be reduced, and the circulation ratio is effectively increased while pipeline scaling is avoided; the hardness alarm device is arranged between the water treatment device and the water tank, the bypass pipeline is arranged between the water inlet and the water outlet of the water treatment device, and when the hardness of supplied water is lower than a preset value, water can be supplemented through the bypass pipeline, so that pipeline corrosion caused by too low hardness of the supplied water can be avoided, and the hardness of water in the water tank can be conveniently controlled and managed.

Description

Technical Field

[0001] The present invention relates to the technical field of circulating water cooling, and particularly relates to an adjustable circulating water pipeline system. Background Art

[0002] In order to control the supply water temperature within the range required by users, it is necessary to cool down the recycled user return water. The currently commonly used circulating water cooling method is cooling tower cooling. However, affected by the air temperature in summer, the cooling effect of the cooling tower is limited, and it is difficult to meet the cooling requirements of the circulating water system. In addition, too high water hardness of the feed water will result in a relatively low circulating ratio of the circulating water system, and the pipeline is prone to scaling; too low water hardness of the feed water is likely to cause pipeline corrosion. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide an adjustable circulating water pipeline system to solve the technical problems that it is difficult for the cooling tower to meet the cooling requirements when the air temperature is high, too high water hardness of the feed water will result in a relatively low circulating ratio of the circulating water system and pipeline scaling, and too low water hardness of the feed water is likely to cause pipeline corrosion.

[0004] An adjustable circulating water pipeline system provided by an embodiment of the present invention includes: A water replenishing unit, the water replenishing unit includes a water tank, and the water tank is provided with a water replenishing inlet, a water supply outlet, a cooling water inlet, a circulating water outlet and a chilled water inlet; the water replenishing inlet is communicated with a water supply end through a water supply pipeline, and a water treatment device for reducing the water hardness of the feed water is provided on the water supply pipeline; the water supply outlet is communicated to a user water using end through a water outlet pipeline, and a water outlet pump is provided on the water outlet pipeline; A cooling water circulating unit, the cooling water circulating unit includes a cooling tower, the water inlet of the cooling tower is communicated with a user return water end through a return water pipeline, and the water outlet of the cooling tower is communicated to the cooling water inlet of the water tank through a cooling water pipeline; the return water pipeline is communicated with the cooling water pipeline through a first bypass pipeline, a first electric control valve is provided on the first bypass pipeline, and a second electric control valve is provided between the water inlet end of the first bypass pipeline and the water inlet of the cooling tower; A chilled water circulating unit, the chilled water circulating unit includes a chiller, the water inlet of the chiller is communicated with the circulating water outlet of the water tank through a circulating pipeline, and a third electric control valve and a circulating pump are provided on the circulating pipeline; the water outlet of the chiller is communicated to the chilled water inlet of the water tank through a chilled water pipeline; A hardness alarm device is provided between the water treatment device and the water tank, and the front end of the water inlet of the water treatment device is communicated to between the water treatment device and the hardness alarm device through a fourth bypass pipeline; a sixth electric control valve is provided on the fourth bypass pipeline, and a seventh electric control valve is provided between the water inlet end of the fourth bypass pipeline and the water inlet of the water treatment device.

[0005] Optionally, the water inlet of the cooling tower is connected between the water treatment device and the water tank through a second bypass pipeline, and a fourth electric control valve is provided on the second bypass pipeline.

[0006] Optionally, the water outlet pipeline is connected to the water return pipeline through a third bypass pipeline, a fifth electric control valve is provided on the third bypass pipeline, and a water return temperature sensor for monitoring the water return temperature is provided on the water return pipeline; the water inlet end of the third bypass pipeline is connected between the water outlet pump and the user water consumption end, and the water outlet end of the third bypass pipeline is connected between the user water return end and the first bypass pipeline.

[0007] Optionally, pressure sensors are provided on both the water supply pipeline and the water outlet pipeline.

[0008] Optionally, a water supply temperature sensor for monitoring the water supply temperature is provided on the water outlet pipeline.

[0009] Optionally, an automatic discharge device is provided at the discharge port of the cooling tower.

[0010] The embodiments of the present invention have the following beneficial effects: 1. The cooling water circulation unit and the chilled water circulation unit are both provided. When the air temperature does not exceed the preset value, the circulating water can be cooled by the cooling tower; when the air temperature is greater than the preset value, it can be automatically switched to cool the circulating water by the chiller, effectively ensuring the cooling effect. 2. A water treatment device is provided on the water supply pipeline to reduce the hardness of the feed water, avoid pipeline scaling, and effectively increase the circulation ratio at the same time. 3. A hardness alarm device is provided between the water treatment device and the water tank, and a bypass pipeline is provided between the water inlet and the water outlet of the water treatment device. When the feed water hardness is lower than the preset value, it can be automatically switched to replenish water through this bypass pipeline to avoid pipeline corrosion caused by too low feed water hardness; at the same time, adjusting the feed water hardness through the water treatment device, the hardness alarm device and the bypass pipeline also facilitates the control and management of the water quality hardness in the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 is a schematic structural diagram of an embodiment of the present invention; The numbers in the figure represent: 1. Water tank; 2. Water supply pipeline; 3. Water treatment device; 4. Water outlet pipeline; 5. Water outlet pump; 6. Cooling tower; 7. Return water pipeline; 8. Cooling water pipeline; 9. First bypass pipeline; 10. First electric control valve; 11. Second electric control valve; 12. Chiller; 13. Circulation pipeline; 14. Third electric control valve; 15. Circulation pump; 16. Chilled water pipeline; 17. Second bypass pipeline; 18. Fourth electric control valve; 19. Third bypass pipeline; 20. Fifth electric control valve; 21. Return water temperature sensor; 22. Pressure sensor; 23. Water supply temperature sensor; 24. Hardness alarm device; 25. Fourth bypass pipeline; 26. Sixth electric control valve; 27. Seventh electric control valve. Detailed implementation manners

[0013] 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more such features.

[0014] Please refer to Figure 1 As shown, the embodiment of the present invention provides an adjustable circulating water pipeline system, including a water replenishment unit, a cooling water circulation unit, and a chilled water circulation unit. Among them, the water replenishment unit includes a water tank 1, and the water tank 1 is provided with a water replenishment inlet, a water supply outlet, a cooling water inlet, a circulating water outlet, and a chilled water inlet. The water replenishment inlet of the water tank 1 is communicated with a water supply end through a water supply pipeline 2, and a water treatment device 3 such as a water softener or a pure water device is provided on the water supply pipeline 2, which can reduce the hardness of the feed water, avoid pipeline scaling, and increase the circulation ratio at the same time. The water supply outlet of the water tank 1 is communicated with a user water use end through a water outlet pipeline 4, and a water outlet pump 5 is provided on the water outlet pipeline 4.

[0015] The cooling water circulation unit includes a cooling tower 6. The water inlet of the cooling tower 6 is communicated with a user return water end through a return water pipeline 7, and the water outlet of the cooling tower 6 is communicated with the cooling water inlet of the water tank 1 through a cooling water pipeline 8. The return water pipeline 7 is communicated with the cooling water pipeline 8 through a first bypass pipeline 9. A first electric control valve 10 is provided on the first bypass pipeline 9, and a second electric control valve 11 is provided between the water inlet end of the first bypass pipeline 9 and the water inlet of the cooling tower 6.

[0016] The chilled water circulation unit includes a chiller 12. The water inlet of the chiller 12 is communicated with the circulating water outlet of the water tank 1 through a circulating pipeline 13. A third electric control valve 14 and a circulating pump 15 are provided on the circulating pipeline 13. The water outlet of the chiller 12 is communicated with the chilled water inlet of the water tank 1 through a chilled water pipeline 16.

[0017] When the air temperature does not exceed a preset value (monitored by an air temperature sensor and transmitted to the valve control system), the first electric control valve 10 and the third electric control valve 14 are closed, and the second electric control valve 11 is turned on. The user's return water enters the cooling tower 6, is cooled in the cooling tower 6 and then enters the water tank 1, and is then transported from the water tank 1 to the user's water using end for recycling. When the air temperature is greater than the preset value, the first electric control valve 10 and the third electric control valve 14 are turned on, and the second electric control valve 11 is closed. The user's return water directly enters the water tank 1 through the first bypass pipeline 9, is pumped from the water tank 1 to the chiller 12, is cooled in the chiller 12 and then re-enters the water tank 1, and is then transported from the water tank 1 to the user's water using end for recycling, effectively ensuring the cooling effect in high temperature in summer.

[0018] Further, the water inlet of the cooling tower 6 is communicated between the water treatment device 3 and the water tank 1 through a second bypass pipeline 17. A fourth electric control valve 18 is provided on the second bypass pipeline 17. When the air temperature does not exceed the preset value, the fourth electric control valve 18 is turned on. A part of the water supply softened by the water treatment device 3 enters the cooling tower 6 through the second bypass pipeline 17, is cooled in the cooling tower 6 and then enters the water tank 1. The remaining part directly enters the water tank 1, is mixed with the cooling water in the water tank 1 and then transported to the user's water using end to control the water supply temperature at the user's water using end within the required range of the user. When the air temperature is greater than the preset value, the fourth electric control valve 18 is closed, and all the water supply softened by the water treatment device 3 enters the water tank 1, is pumped from the water tank 1 to the chiller 12, is cooled in the chiller 12, and then is transported from the water tank 1 to the user's water using end.

[0019] Further, the water outlet pipeline 4 is communicated with the return water pipeline 7 through a third bypass pipeline 19. A fifth electric control valve 20 is provided on the third bypass pipeline 19. Specifically, the water inlet end of the third bypass pipeline 19 is communicated between the water outlet pump 5 and the user's water using end, and the water outlet end of the third bypass pipeline 19 is communicated between the user's return water end and the first bypass pipeline 9. A return water temperature sensor 21 for monitoring the return water temperature is provided on the return water pipeline 7. When the return water temperature exceeds the preset value, the fifth electric control valve 20 is turned on, so that a part of the cooled water supply can enter the return water pipeline 7 through the third bypass pipeline 19 and be mixed with the high-temperature return water. In the embodiment of the present invention, pressure sensors 22 are provided on both the water supply pipeline 2 and the water outlet pipeline 4 for monitoring the water supply pressure. A water supply temperature sensor 23 is provided on the water outlet pipeline 4 for monitoring the water supply temperature.

[0020] Meanwhile, in the embodiment of the present invention, a hardness alarm device 24 is further provided between the water treatment device 3 and the water tank 1. The front end of the water inlet of the water treatment device 3 is connected to the connection between the water treatment device 3 and the hardness alarm device 24 through a fourth bypass pipeline 25. A sixth electric control valve 26 is provided on the fourth bypass pipeline 25, and a seventh electric control valve 27 is provided between the water inlet end of the fourth bypass pipeline 25 and the water inlet of the water treatment device 3. When the feed water hardness monitored by the hardness alarm device 24 is not lower than a preset value (usually about 100 ppm), the sixth electric control valve 26 is closed and the seventh electric control valve 27 is turned on, and the feed water is softened by the water treatment device 3. On the contrary, when the feed water hardness monitored by the hardness alarm device 24 is lower than the preset value, the sixth electric control valve 26 is turned on and the seventh electric control valve 27 is closed, and the feed water directly enters the water tank 1 through the fourth bypass pipeline 25 without passing through the water treatment device 3, so as to avoid pipeline corrosion caused by too low feed water hardness. Moreover, the water quality hardness in the water tank 1 can be controlled and managed by replenishing water to the water tank 1. Thus, when switching to the operation of the chiller 12, the cooling tower concentrated water in the water tank 1 can be gradually diluted by the replenished soft water, so that the chiller 12 can operate under the condition of low hardness water quality (compared with the concentrated water).

[0021] In addition, an automatic discharge device (not shown in the figure) can be added to the discharge port of the cooling tower 6 to automatically discharge when parameters such as the conductivity or chloride ion content of the cooling tower 6 exceed the set value.

[0022] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable circulating water pipeline system, characterized in that: include: A water replenishment unit, the water replenishment unit comprises a water tank, the water tank is provided with a water replenishment inlet, a water supply outlet, a cooling water inlet, a circulating water outlet and a chilled water inlet; the water replenishment inlet is connected to the water supply end through a water supply pipeline, the water supply pipeline is provided with a water treatment device for reducing the hardness of the water supply; the water supply outlet is connected to the user water use end through a water outlet pipeline, the water outlet pipeline is provided with a water outlet pump; A cooling water circulation unit, the cooling water circulation unit comprising a cooling tower, the water inlet of the cooling tower being connected to the user's water return end through a water return pipeline, and the water outlet of the cooling tower being connected to the cooling water inlet of the water tank through a cooling water pipeline; the water return pipeline being connected to the cooling water pipeline through a first bypass pipeline, a first electrically controlled valve being provided on the first bypass pipeline, and a second electrically controlled valve being provided between the water inlet end of the first bypass pipeline and the water inlet of the cooling tower; A chilled water circulation unit, the chilled water circulation unit comprising a refrigerator, the water inlet of the refrigerator being connected to the circulating water outlet of the water tank through a circulation pipeline, the circulation pipeline being provided with a third electric control valve and a circulation pump; the water outlet of the refrigerator being connected to the chilled water inlet of the water tank through a chilled water pipeline; A hardness alarm device is provided between the water treatment device and the water tank, and the front end of the water inlet of the water treatment device is connected to the water treatment device and the hardness alarm device through a fourth bypass pipeline; a sixth electrically controlled valve is provided on the fourth bypass pipeline, and a seventh electrically controlled valve is provided between the water inlet end of the fourth bypass pipeline and the water inlet of the water treatment device.

2. The adjustable circulating water pipeline system according to claim 1, characterized in that: The water inlet of the cooling tower is connected to the water treatment device and the water tank through a second bypass pipeline, and a fourth electric control valve is arranged on the second bypass pipeline.

3. The adjustable circulating water pipeline system according to claim 1, characterized in that: The water outlet pipeline is connected to the water return pipeline through a third bypass pipeline, a fifth electrically-controlled valve is provided on the third bypass pipeline, and a return water temperature sensor for monitoring the return water temperature is provided on the return water pipeline; the water inlet end of the third bypass pipeline is connected between the water outlet pump and the user water use end, and the water outlet end of the third bypass pipeline is connected between the user return water end and the first bypass pipeline.

4. The adjustable circulating water pipeline system according to claim 1, characterized in that: The water supply pipeline and the water outlet pipeline are both provided with pressure sensors.

5. The adjustable circulating water pipeline system according to claim 1, characterized in that: The water outlet pipeline is provided with a water supply temperature sensor for monitoring the water supply temperature.

6. The adjustable circulating water pipeline system according to claim 1, characterized in that: The discharge port of the cooling tower is provided with an automatic discharge device.

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