CN211635235U - Concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation - Google Patents
Concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation Download PDFInfo
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- CN211635235U CN211635235U CN201921898680.8U CN201921898680U CN211635235U CN 211635235 U CN211635235 U CN 211635235U CN 201921898680 U CN201921898680 U CN 201921898680U CN 211635235 U CN211635235 U CN 211635235U
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Abstract
The utility model discloses an improved high-efficiency heat source tower antifreeze agent concentration and regeneration system, which comprises a heat source tower, a preheater group and an evaporator, wherein the preheater group is communicated with the heat source tower through a pipeline; the preheater group comprises a plurality of first preheaters which are positioned at the downstream of the heat source tower process and are connected in series through a pipeline, and a second preheater group which is positioned at the downstream of the heat source tower process and is connected with the first preheaters in parallel. The utility model discloses an evaporimeter combines the separation that can high-efficient realization solution and steam with a whole set of vapor recompression mode in the system, and the pure mechanical vapor recompression's of tradition mode of operating temperature is low, and reducible occupation of land space can be reached with less equipment surface area to lower operation problem simultaneously and reduce the purpose of heat loss and cost.
Description
Technical Field
The utility model relates to a indirect heating equipment technical field especially relates to a concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation.
Background
The heat source tower heat pump system is a heat pump system for heating and cooling buildings by absorbing heat energy from or releasing heat energy to air by utilizing contact between liquid and air.
The method comprises the steps that carrier media with the freezing point lower than zero are used in winter, low-grade heat energy in air with high relative humidity in a low-temperature environment is extracted efficiently, a small amount of high-grade heat sources are input into an energy tower heat pump unit, transfer of the low-grade heat energy to the high-grade heat energy in the low-temperature environment is achieved, heat supply and hot water supply are carried out on a building, and the problems that an air source heat pump is frosted frequently and a buried pipe heat pump is limited by land conditions are solved; the heat generated in the air conditioner is dissipated mainly through evaporation in summer. And the heat source tower heat pump is particularly suitable for high-humidity areas, and has great energy-saving advantage.
When a heat source tower heat pump system supplies heat in winter, sensible heat in air is absorbed, meanwhile, partial water vapor in the air is condensed into water, latent heat of the water vapor in the air is absorbed, the concentration of the anti-freezing agent is gradually reduced, the anti-freezing agent gradually reaches the freezing point of the anti-freezing agent, and the system cannot work normally.
Therefore, the antifreeze needs to be concentrated and regenerated, the common antifreeze regeneration mode not only greatly increases the investment of equipment, but also consumes a large amount of energy, the regeneration efficiency is low, and the system energy efficiency can not even reach the level of an air source heat pump.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rationally utilize the system in the energy, improve the concentrated regeneration system of improved generation high-efficient heat source tower antifreeze of regeneration effect of regeneration efficiency and antifreeze.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model discloses a concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation, this system mainly includes:
a heat source tower;
the preheater group is communicated with the heat source tower through a pipeline and at least comprises a solution heat exchange preheater for preheating the solution to be regenerated through the concentrated solution and a condensate heat exchange preheater for preheating the solution to be regenerated through condensate water;
the evaporator is communicated with the heat source tower through a steam heater and is used for receiving the solution to be regenerated after being preheated by the preheater group;
the steam heater is communicated with the evaporator through a pipeline and is arranged at the upper part of the evaporator;
the output end of the evaporator is divided into two loops, namely a first loop communicated with the solution heat exchange preheater and a second loop communicated with the steam heater;
the first loop conveys the treated regeneration solution;
the second loop reflows the incompletely treated regeneration solution into the steam heater and is conveyed by the steam heater to the evaporator to form a cyclic treatment loop;
the preheater group comprises a plurality of first preheaters which are positioned at the process downstream of the heat source tower and are connected in series through a pipeline, the first preheaters receive the regeneration solution processed by the evaporators and exchange heat with the solution to be regenerated output by the heat source tower so as to preheat the solution to be regenerated, and the first preheaters are solution heat exchange preheaters; and
the second preheater group is positioned at the downstream of the heat source tower process and is connected with the first preheater in parallel, receives the condensed water output by the steam heater and preheats the solution to be regenerated through heat exchange between the condensed water and the solution to be regenerated, and is a condensed liquid heat exchange preheater;
the second preheater group comprises two second preheaters which are connected in parallel, and the condensed water is communicated with any one of the second preheaters through a pipeline.
Further, the input end of the steam heater is communicated with the upper part of the evaporator through a pipeline to receive the steam output by the evaporator, and the part of the steam is subjected to heat exchange with the solution to be regenerated in the steam heater to heat the solution to be regenerated.
Furthermore, the output end of the steam heater is communicated with a condensate water tank through a pipeline, and the condensate water tank receives condensate water formed after heat exchange with the solution to be regenerated and is communicated with any one of the second preheaters through a pipeline.
Furthermore, a steam compressor is installed on a pipeline between the steam heater and the evaporator, and steam output by the evaporator is pressurized by the steam compressor and then is input into the steam heater.
Further, a solution circulating pump is installed on the second loop, and the evaporator returns the incompletely-processed regeneration solution to the steam heater through the solution circulating pump.
Further, the output end of the heat source tower controls the flow of the solution to be regenerated through a first regulating valve.
Further, the second preheater group is provided with a first branch circuit which is connected with the first preheater in parallel and is controlled by a second regulating valve;
the second preheater group is also provided with two second branches which are communicated with the first branch and are connected in parallel, and each second branch is provided with a second preheater.
In the technical scheme, the utility model provides a pair of concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation has following beneficial effect:
the evaporator in the system of the utility model is combined with the whole set of vapor recompression mode, so that the separation of solution and vapor can be realized efficiently, the operation temperature is lower than that of the traditional pure mechanical vapor recompression mode, the occupied space can be reduced, and the purposes of reducing heat loss and cost can be achieved by lower operation problems and less equipment surface area;
in order to improve the efficiency of the preheater and recover the waste heat, the device of the utility model designs a first preheater and a second preheater group which are connected in parallel, and reasonably recovers the energy; simultaneously, two parallel connection's second preheater is also chooseed for use to the second preheater group to open one and prepare for the mode improvement accident situation's result of use and be convenient for later maintenance and maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a system flow chart of an improved high-efficiency heat source tower antifreeze concentration and regeneration system provided by an embodiment of the present invention.
Description of reference numerals:
1. a heat source tower;
201. a first regulating valve; 202. a second regulating valve;
301. a first preheater; 302. a second preheater;
4. an evaporator; 5. a steam heater; 6. a solution circulating pump; 7. a vapor compressor; 8. a condensed water tank;
901. a first circuit; 902. a second loop;
1001. a first branch; 1002. a second branch.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1;
the utility model discloses a concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation, this system mainly includes:
a heat source tower 1;
the preheater group is communicated with the heat source tower 1 through a pipeline and at least comprises a solution heat exchange preheater for preheating the solution to be regenerated through the concentrated solution and a condensate heat exchange preheater for preheating the solution to be regenerated through condensate water;
the evaporator 4 is communicated with the heat source tower 1 through a steam heater 5 and is used for receiving the solution to be regenerated after being preheated by the preheater group;
the steam heater 5 is communicated with the evaporator 4 through a pipeline and is arranged at the upper part of the evaporator 4;
the output end of the evaporator 4 is divided into two loops, namely a first loop 901 communicated with the solution heat exchange preheater and a second loop 902 communicated with the steam heater 5;
the first loop 901 transports the treated regeneration solution;
the second circuit 902 returns the incompletely treated regeneration solution to the steam heater 5 and is delivered to the evaporator 4 by the steam heater 5 to form a circulation treatment circuit;
the preheater group comprises a plurality of first preheaters 301 which are positioned at the process downstream of the heat source tower 1 and are connected in series through pipelines, the first preheaters 301 receive the regeneration solution processed by the evaporator 4 and exchange heat with the solution to be regenerated output by the heat source tower 1 to preheat the solution to be regenerated, and the first preheaters 301 are solution heat exchange preheaters; and
the second preheater group is positioned at the process downstream of the heat source tower 1 and connected with the first preheater 301 in parallel, receives the condensed water output by the steam heater 5 and preheats the solution to be regenerated through heat exchange between the condensed water and the solution to be regenerated, and is a condensed liquid heat exchange preheater;
the second preheater group comprises two second preheaters 302 connected in parallel, and the condensed water is communicated with any one of the second preheaters 302 through a pipeline.
Preferably, the output end of the heat source tower 1 in this embodiment controls the flow rate of the solution to be regenerated through the first regulating valve 201.
Preferably, the second preheater group in this embodiment has a first branch 1001 connected in parallel with the first preheater 301, and the first branch 1001 controls the switch through the second regulating valve 202;
the second preheater group also has two second branches 1002 communicating with the first branch 1001 and formed to be connected in parallel, and each second branch 1002 mounts a second preheater 302.
Specifically, the embodiment discloses a system for concentrating and regenerating the antifreeze solution of the existing heat source tower 1, and meanwhile, the system is improved on the basis of the existing pure mechanical vapor compression mode, and the evaporator 4 is used for separation. Meanwhile, after the steam is generated, the steam flows back to the steam heater 5 to be used as a second heat source, so that the energy consumption is reduced, and the regeneration efficiency and the regeneration effect are improved.
Meanwhile, the heat source tower 1 outputs a solution to be regenerated, namely the water-containing antifreeze solution, and in consideration of subsequent process treatment, a preheater group is designed at the process downstream of the heat source tower 1 and is divided into two groups, wherein the first group is a first preheater 301 for forming heat exchange with the solution to be regenerated by using the regenerated solution as a heat source, and the second group is a second preheater for forming heat exchange with the solution to be regenerated by using high-temperature condensate water generated subsequently in the process as a heat source; because the two groups of preheater heat sources are different, the second preheater group and the first preheater 301 are connected in parallel. The second preheater group is also connected in parallel with the two second preheaters 302 in an one-on one-standby mode, so that the maintenance and the use are convenient, and the preheating efficiency can be improved by starting the second preheaters simultaneously. Products after heat exchange of the two heat exchange media are respectively treated, the regenerated solution after heat exchange flows back to the heat source tower 1 for subsequent use, and condensed water after heat exchange is directly discharged or is intensively stored for irrigation or other treatment modes.
Preferably, in the present embodiment, the input end of the steam heater 5 is communicated with the upper part of the evaporator 4 through a pipeline to receive the steam output by the evaporator 4, and the part of the steam is in heat exchange with the solution to be regenerated in the steam heater 5 to heat the solution to be regenerated.
Preferably, the output end of the steam heater 5 in this embodiment is communicated with a condensed water tank 8 through a pipeline, and the condensed water tank 8 receives condensed water formed after heat exchange with the solution to be regenerated and is communicated with any one of the second preheaters 302 through a pipeline.
Preferably, in this embodiment, a steam compressor 6 is installed in a pipeline between the steam heater 5 and the evaporator 4, and the steam output from the evaporator 4 is pressurized by the steam compressor 6 and then input into the steam heater 5.
Preferably, in the present embodiment, the solution circulating pump 6 is installed on the second circuit 902, and the evaporator 4 returns the incompletely processed regeneration solution to the steam heater 5 through the solution circulating pump 6.
The water vapor generated by the evaporator 4 is compressed and pressurized to a required temperature by the vapor compressor 7, then the vapor is used as a regenerative heat source to be circularly applied and continuously evaporated with the antifreeze solution, and the pressurized vapor can be rapidly cooled or condensed in the process of circulating heat transfer until the pressurized vapor becomes clean pure water and is separated from the antifreeze. The temperature of condensed water obtained after heat exchange with the solution to be regenerated in the steam heater 5 is closer to the solution graduation at the separation part of the separator, the condensed water waste heat and the regeneration solution waste heat can be simultaneously utilized to heat the solution to be regenerated in parallel, the solution to be regenerated is preheated to high temperature, the temperature difference between the solution to be regenerated and the boiling point temperature is reduced, the energy consumption of the steam compressor 7 is reduced, and the system energy efficiency is improved.
In order to regulate the flow rate of the solution to be regenerated, the output end of the heat source tower 1 of the embodiment controls the flow rate of the solution to be regenerated through the first regulating valve 201.
Similarly, considering that the second preheater group is configured in an on-off manner, it is necessary to install the second control valve 202 on the corresponding branch to control the on-off and opening of the corresponding branch.
In the technical scheme, the utility model provides a pair of concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation has following beneficial effect:
the evaporator 4 in the system of the utility model is combined with the whole set of vapor recompression mode, so that the separation of solution and vapor can be realized efficiently, the operation temperature is lower than that of the traditional pure mechanical vapor recompression mode, the occupied space can be reduced, and the purposes of reducing heat loss and cost can be achieved by lower operation problems and less equipment surface area;
in order to improve the efficiency of the preheater and recover the waste heat, the device of the utility model designs a first preheater 301 and a second preheater group which are connected in parallel, and reasonably recovers the energy; meanwhile, the second preheater group also adopts two second preheaters 302 connected in parallel, so that the using effect of the accident state is improved in an one-on one-standby mode, and the later maintenance and the overhaul are facilitated.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. An improved high-efficiency heat source tower antifreeze agent concentration regeneration system is characterized by mainly comprising:
a heat source tower (1);
the preheater group is communicated with the heat source tower (1) through a pipeline and at least comprises a solution heat exchange preheater for preheating the solution to be regenerated through the concentrated solution and a condensate heat exchange preheater for preheating the solution to be regenerated through condensate water;
an evaporator (4), wherein the evaporator (4) is communicated with the heat source tower (1) through a steam heater (5) and is used for receiving the solution to be regenerated after being preheated by the preheater group;
the steam heater (5) is communicated with the evaporator (4) through a pipeline and is arranged at the upper part of the evaporator (4);
the output end of the evaporator (4) is divided into two loops, namely a first loop (901) communicated with the solution heat exchange preheater and a second loop (902) communicated with the steam heater (5);
the first loop (901) conveys the treated regeneration solution;
the second circuit (902) returns the incompletely treated regeneration solution into the steam heater (5) and is conveyed by the steam heater (5) to the evaporator (4) to form a cyclic treatment circuit;
the preheater group comprises a plurality of first preheaters (301) which are positioned at the process downstream of the heat source tower (1) and are connected in series through a pipeline, the first preheaters (301) receive the regeneration solution processed by the evaporator (4) and exchange heat with the solution to be regenerated output by the heat source tower (1) to preheat the solution to be regenerated, and the first preheaters (301) are solution heat exchange preheaters; and
the second preheater group is positioned at the process downstream of the heat source tower (1) and is connected with the first preheater (301) in parallel, receives the condensed water output by the steam heater (5) and preheats the solution to be regenerated through heat exchange between the condensed water and the solution to be regenerated, and is a condensed liquid heat exchange preheater;
the second preheater group comprises two second preheaters (302) connected in parallel, and the condensed water is communicated with any one of the second preheaters (302) through a pipeline.
2. The improved high-efficiency heat source tower antifreeze concentration regeneration system as set forth in claim 1, wherein the input end of said steam heater (5) is communicated with the upper part of said evaporator (4) through a pipeline to receive the steam output from said evaporator (4), and the part of the steam is heat-exchanged with the solution to be regenerated in the steam heater (5) in said steam heater (5) to heat the solution to be regenerated.
3. The improved high-efficiency heat source tower antifreeze concentration regeneration system as set forth in claim 2, wherein the output end of said steam heater (5) is communicated with a condensed water tank (8) through a pipeline, and said condensed water tank (8) receives condensed water formed after heat exchange with said solution to be regenerated and is communicated with any one of said second preheaters (302) through a pipeline.
4. The improved high-efficiency heat source tower antifreeze concentration and regeneration system according to claim 3, wherein a vapor compressor (7) is installed on a pipeline between the vapor heater (5) and the evaporator (4), and the vapor output by the evaporator (4) is pressurized by the vapor compressor (7) and then is input into the vapor heater (5).
5. The improved high-efficiency heat source tower antifreeze concentrated regeneration system according to claim 1, wherein said second loop (902) is installed with a solution circulating pump (6), and said evaporator (4) returns the incompletely treated regeneration solution to said steam heater (5) through said solution circulating pump (6).
6. The improved high-efficiency heat source tower antifreeze concentrated regeneration system as claimed in claim 1, wherein the output end of the heat source tower (1) controls the flow of the solution to be regenerated through a first regulating valve (201).
7. The improved high-efficiency heat source tower antifreeze concentrated regeneration system as claimed in claim 1, wherein said second preheater group has a first branch (1001) connected in parallel with said first preheater (301), said first branch (1001) being controlled to be switched by a second regulating valve (202);
the second preheater group also has two second branches (1002) communicating with the first branch (1001) and formed to be connected in parallel, each of the second branches (1002) mounting one of the second preheaters (302).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921898680.8U CN211635235U (en) | 2019-11-05 | 2019-11-05 | Concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation |
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| CN201921898680.8U CN211635235U (en) | 2019-11-05 | 2019-11-05 | Concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation |
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| CN201921898680.8U Active CN211635235U (en) | 2019-11-05 | 2019-11-05 | Concentrated regeneration system of high-efficient heat source tower antifreeze of improved generation |
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