Solution concentration device of heat removal tower

Abstract

The utility model relates to the technical field of heat removal towers, and in particular relates to a solution concentration device of a heat removal tower, which solves the technical problems that an existing solution concentration device is complicated in structure, cannot simultaneously perform two functions of evaporation and condensation, is relatively poor in use effect, is relatively poor in adjustability and cannot guarantee an energy-saving effect. Comprising a vertical low-pressure separator and a vacuum pump arranged on the right side of the vertical low-pressure separator, a water vapor condensing device is arranged on the right side of the vacuum pump, and a solar heat collector for obtaining a heat source is arranged on the vertical low-pressure separator. By using the vertical low-pressure separator, the vacuum pump and the water vapor condensing device, a large amount of water in the whole salt solution is volatilized, the concentration of the residual salt solution is increased, the salt solution flows out of the outlet of the device and enters the next step of circulation of a heat removal tower system, the structure is simple, evaporation and condensation can be carried out at the same time, and the cost is low. The cost is lower, the use effect is better, and the popularization value is good.

Description

Technical Field

[0001] This utility model relates to the field of heat extraction tower technology, and in particular to a heat extraction tower solution concentration device. Background Technology

[0002] A heat exchange tower (also called an energy tower) system is a new type of air conditioning that extracts heat from the air. Combining heat pump technology and utilizing a low-freezing-point salt solution, the heat exchange tower can extract a large amount of heat from the ambient air through total heat exchange with the air, regardless of winter or summer. This enables building heating in winter, year-round hot water production, and cross-seasonal heat storage using soil-source energy storage technology. During the heat exchange process, because a low-temperature salt solution is used for total heat exchange with the ambient air, condensate is generated and mixed in with the salt solution. As the amount of condensate in the salt solution increases, the salt concentration gradually decreases, the freezing point gradually increases, and the heat exchange tower system's heat extraction capacity gradually deteriorates. Therefore, during operation, the salt solution needs to be concentrated in a timely manner to separate and discharge excess water.

[0003] For example, Chinese patent CN210751311U discloses a solution concentration device, which includes a raw liquid evaporator, a concentration tank, a raw liquid tank, a solvent recovery condenser, a gas-liquid separator, and a solvent collection tank. Compared with the prior art, it has a simple and compact structure, small size, and significant energy-saving effect, with an energy efficiency ratio of 9.5-12. Since the heating temperature of the substance is not high, it can well maintain the original physical properties of the substance without damage. At the same time, it is an essential and preferred solution for areas where the use of steam boilers is not allowed or where pipeline steam cannot be delivered. It allows some chemical production processes to choose production sites more flexibly without having to consider the demand for pipeline steam, thus achieving the purpose of this application.

[0004] The existing technology has the following problems:

[0005] Existing solution concentration devices have complex structures and cannot perform both evaporation and condensation functions simultaneously, resulting in poor performance. Furthermore, existing devices have poor adjustability and cannot guarantee energy-saving effects. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a heat extraction tower solution concentration device, which solves the technical problems of complex structure and poor adjustability of existing solution concentration devices, and achieves the goal of simple device structure and better adjustability.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a heat extraction tower solution concentration device, including a vertical low-pressure separator and a vacuum pump disposed on the right side of the vertical low-pressure separator. A water vapor condensation device is disposed on the right side of the vacuum pump. A solar collector for obtaining heat source is disposed on the vertical low-pressure separator. A water vapor outlet for water vapor to enter is disposed at the top of the vertical low-pressure separator, and a dilute solution inlet for dilute solution to enter is disposed on the vertical low-pressure separator. Two outlets for salt solution to flow out are disposed on the right side of the vertical low-pressure separator. A water vapor condensation device is disposed with a water vapor inlet for water vapor to enter and a dilute solution outlet for dilute solution to flow out. Two drain outlets are disposed on the water vapor condensation device, and an inlet for dilute solution to flow into the heat extraction tower is disposed on the water vapor condensation device.

[0008] Furthermore, the input end of the vacuum pump is connected to a water pumping pipe a, and the output end of the vacuum pump is connected to a water pumping pipe b. The other end of the water pumping pipe a is connected to a water vapor outlet, and the other end of the water pumping pipe b is connected to a dilute solution outlet. A dilute solution flow pipe is connected to the dilute solution inlet, and the other end of the dilute solution flow pipe is connected to a water vapor inlet.

[0009] Furthermore, the steam condensation device is equipped with multiple regulating water seals inside, and each regulating water seal is equipped with a vent valve that extends beyond the surface of the steam condensation device.

[0010] By employing the above technical solution, this utility model provides a heat extraction tower solution concentration device, which has at least the following beneficial effects:

[0011] 1. This utility model uses a vertical low-pressure separator, a vacuum pump, and a water vapor condensation device to make a large amount of water evaporate from the overall salt solution, increasing the concentration of the remaining salt solution. The solution then flows out from the outlet of this device and enters the next cycle of the heat exchange tower system. It is not only simple in structure, but also can perform evaporation and condensation simultaneously. It is low in cost and has better performance, making it highly valuable for promotion.

[0012] 2. This utility model utilizes a multi-stage adjustable water seal in its steam condensation device. The internal pressure of the steam condensation device remains consistently higher than the ambient air pressure during system operation, allowing steam to condense at a higher temperature within the device. Furthermore, the operating pressure within the steam condensation device can be set in stages via the vent valves at each stage of the multi-stage adjustable water seal, thus better adapting to different water temperatures and operating conditions. Additionally, with the multi-stage water seal, even excessive non-condensable gases within the steam condensation device can be reliably discharged through the water seal without compromising its airtightness, ensuring excellent regulation performance, safer system operation, and controlled energy savings. Attached Figure Description

[0013] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the practical vertical low-pressure separator;

[0017] Figure 3 This is a schematic diagram of the structure of the practical steam condensation device;

[0018] Figure 4 This is a schematic diagram of the adjustable water seal structure of this practical application.

[0019] In the diagram: 1. Vertical low-pressure separator; 2. Solar collector; 3. Pumping pipe a; 4. Vacuum pump; 5. Pumping pipe b; 6. Steam condenser; 7. Dilute solution flow pipe; 11. Dilute solution inlet; 12. Steam outlet; 13. Outlet; 61. Inlet; 62. Drain; 63. Steam inlet; 64. Dilute solution outlet; 65. Vent valve; 66. Regulating water seal. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0021] Given the current limitations of existing solution concentration devices, such as their complex structure, inability to simultaneously perform evaporation and condensation, and poor performance, Figures 1-4As shown, this utility model provides a heat extraction tower solution concentration device, including a vertical low-pressure separator 1 and a vacuum pump 4 disposed on the right side of the vertical low-pressure separator 1. The device is characterized by: a water vapor condensing device 6 disposed on the right side of the vacuum pump 4; a solar collector 2 for obtaining heat source disposed on the vertical low-pressure separator 1; a water vapor outlet 12 for water vapor entry disposed at the top of the vertical low-pressure separator 1; a dilute solution inlet 11 for dilute solution entry disposed on the vertical low-pressure separator 1; two outlets 13 for salt solution outflow disposed on the right side of the vertical low-pressure separator 1; a water vapor inlet 63 for water vapor entry and a dilute solution outlet 64 for dilute solution outflow disposed on the water vapor condensing device 6; two drain outlets 62 disposed on the water vapor condensing device 6; an inlet 61 for dilute solution from the heat extraction tower to flow into the water vapor condensing device 6; a water pump 4 with an input end connected to a water pump pipe a3 and an output end connected to a water pump pipe b5; and the other end of the water pump pipe a3 connected to the water vapor outlet 12. The other end of water pipe b5 is connected to dilute solution outlet 64. A dilute solution flow pipe 7 is connected to dilute solution inlet 11, and the other end of dilute solution flow pipe 7 is connected to water vapor inlet 63. The dilute solution from the heat exchange tower enters the water vapor condensation device 6 through inlet 61. In the water vapor condensation device 6, the high-temperature water vapor drawn from the vertical low-pressure separator 1 by vacuum pump 4 is condensed, and the condensate is discharged from the system through drain outlet 62. After the water vapor in the water vapor condensation device 6 is condensed, the dilute solution with increased temperature enters the vertical low-pressure separator 1 and is heated by high-temperature water from solar collector 2 or other heat sources. The water vapor pressure on the surface of the salt solution increases. At the same time, the air and water vapor in the vertical low-pressure separator 1 are continuously discharged by vacuum pump 4, so that the pressure in the vertical low-pressure separator 1 is always maintained at a low level. Under the combined action of high temperature of salt solution and low pressure of container, a large amount of water in salt solution evaporates, the concentration of the remaining salt solution increases, and it flows out from outlet 13 of this device and enters the next cycle of the heat exchange tower system. Example

[0022] Based on Example 1, Figures 1-4 As shown, although the structure has been simplified, the existing device has poor adjustability and cannot guarantee energy saving effect. Therefore, the water vapor condensation device 6 in this device is equipped with multiple regulating water seals 66, and each regulating water seal 66 is equipped with a vent valve 65 that extends beyond the surface of the water vapor condensation device 6.

[0023] In this embodiment, because the water vapor condensing device 6 uses a multi-stage adjustable water seal 66, the internal pressure of the water vapor condensing device 6 is always higher than the ambient air pressure during system operation, allowing water vapor to condense at a higher temperature inside the water vapor condensing device 6. Moreover, the working pressure inside the water vapor condensing device 6 can be set in stages by the upper vent valves 65 of each stage of the multi-stage adjustable water seal 66, thus better adapting to different water temperatures and operating conditions. At the same time, with the use of a multi-stage water seal, when there is too much non-condensable gas inside the water vapor condensing device 6, the gas can be reliably discharged from the water seal without compromising the airtightness of the water vapor condensing device 6, ensuring the safe operation of the system.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-removing column solution concentration device, comprising a vertical low-pressure separator (1) and a vacuum pump (4) arranged on the right side of the vertical low-pressure separator (1), characterized in that: The right side of the vacuum pump (4) is provided with a water vapor condensing device (6), and the vertical low-pressure separator (1) is provided with a solar heat collector (2) for obtaining heat source; The top of the vertical low-pressure separator (1) is provided with a water vapor outlet (12) for water vapor entering, and the vertical low-pressure separator (1) is provided with a dilute solution inlet (11) for dilute solution entering, and the right side of the vertical low-pressure separator (1) is provided with two outlets (13) for salt solution flowing out; The water vapor condensing device (6) is provided with a water vapor inlet (63) for water vapor entering, and a dilute solution outlet (64) for dilute solution flowing out, and the water vapor condensing device (6) is provided with two water discharge ports (62), and the water vapor condensing device (6) is provided with an inlet (61) for dilute solution of heat extraction tower flowing in.

2. A heat extraction column solution concentration apparatus according to claim 1, wherein: The input end of the vacuum pump (4) is communicated with a water suction pipe a (3), and the output end of the vacuum pump (4) is communicated with a water suction pipe b (5), the other end of the water suction pipe a (3) is communicated with the water vapor outlet (12), and the other end of the water suction pipe b (5) is communicated with the dilute solution outlet (64), the dilute solution inlet (11) is connected with a dilute solution flow pipe (7), and the other end of the dilute solution flow pipe (7) is connected with the water vapor inlet (63).

3. A heat extraction column solution concentration apparatus according to claim 1, wherein: The inside of the water vapor condensing device (6) is provided with a plurality of adjusting water seals (66), and each adjusting water seal (66) is provided with an air vent valve (65) beyond the surface of the water vapor condensing device (6).

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