CN214469476U - Refrigeration system - Google Patents
Refrigeration system Download PDFInfo
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- CN214469476U CN214469476U CN202022499741.2U CN202022499741U CN214469476U CN 214469476 U CN214469476 U CN 214469476U CN 202022499741 U CN202022499741 U CN 202022499741U CN 214469476 U CN214469476 U CN 214469476U
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Abstract
The utility model relates to a refrigerating system, including first freezing pond, refrigerator, the freezing pond of second, an at least heat exchanger, first circulating pump and second circulating pump. The first solution in the first freezing pool can flow through the freezer through the freezing channel to be frozen and flow back to the first freezing pool. The first solution in the first freezing tank can flow through the heat exchanger through the first circulating pump and the first circulating channel and flow back to the first freezing tank. The second solution in the second freezing tank can flow through the heat exchanger through the second circulation pump and the second circulation passage and flow back to the second freezing tank. The first solution flowing through the heat exchanger exchanges heat with the second solution flowing through the heat exchanger in the heat exchanger. The utility model discloses an increase equipment such as heat exchanger, circulating pump and can carry out cold volume and exchange, satisfied production with cold demand, guaranteed the required reaction temperature of production, and then promoted the useless handling capacity of danger.
Description
Technical Field
The utility model relates to a refrigerating system.
Background
With the stricter environmental requirements in China, the comprehensive control of the environment is also in need. The green water in the green mountains is well protected, environment-friendly enterprises are created, and the green water is also a mission of environmental protection people.
At present, dangerous useless processing enterprise can produce the heat in the production process, the chemical reaction in-process of material, in order to maintain reaction temperature, need to carry out cooling treatment to equipment such as reaction tower, cauldron, jar, and according to different and the raw materials of technology, the freezing salt water temperature of selecting is also different.
At present, two sets of refrigeration systems are mainly adopted in a hazardous waste disposal workshop according to a production process, wherein one system is a-30 ℃ chilled water system, and the other system is a-16 ℃ chilled water system. Wherein, the refrigeration water system with the temperature of-30 ℃ can completely meet the production requirement due to advanced production process, a refrigerating machine of the refrigerating unit can be stopped for about 6 hours every day, and the temperature of a refrigeration brine pool can still be kept at-30 ℃, so that the refrigeration water system with the temperature of-30 ℃ is sufficient, and the surplus availability is high. Due to the increase and adjustment of production load, even if the refrigerating machine of the-16 ℃ frozen brine system is completely started to carry out full-load production, the refrigerating requirement of production cannot be met, the temperature of the frozen brine tank can only be maintained at about-8 ℃, and the production process index is about-13 ℃, so that the normal production is seriously influenced. If a set of refrigerating unit needs about 80 ten thousand, the cost is high, so that enterprises can only be forced to reduce the production.
Therefore, how to modify the existing refrigeration system to meet the production requirement and save the cost is one of the problems that the industry needs to solve urgently.
SUMMERY OF THE UTILITY MODEL
To foretell defect, the utility model aims to provide a refrigerating system can both guarantee the required reaction temperature of production, promotes the useless output of handling of danger, can practice thrift the cost again.
In order to achieve the above object, the present invention provides a refrigeration system, which is characterized by comprising:
the first freezing pool is internally provided with a first solution and is provided with a first circulating water outlet, a freezing water outlet, a first circulating water return port and a freezing water return port;
the refrigerator is communicated with the first freezing pool through a freezing channel, and the first solution can flow through the freezing channel from the freezing water outlet through the refrigerator to be refrigerated and flow back to the first freezing pool from the freezing water return port;
the second freezing tank is internally provided with a second solution and is provided with a second circulating water outlet and a second circulating water return port;
the at least one heat exchanger is provided with a first heat exchange water inlet, a first heat exchange water outlet, a second heat exchange water inlet and a second heat exchange water outlet, the at least one heat exchanger is communicated with the first freezing tank through a first circulating channel, and the at least one heat exchanger is communicated with the second freezing tank through a second circulating channel;
the first circulating pump is correspondingly arranged at the first circulating water outlet; and
the second circulating pump is correspondingly arranged at the second circulating water outlet;
the first solution can flow from the first circulating water outlet, through the at least one heat exchanger and back to the first freezing tank from the first circulating water return port through the first circulating pump and the first circulating channel; the second solution can flow from the second circulating water outlet through the at least one heat exchanger and back to the second freezing tank from the second circulating water return port through the second circulating pump and the second circulating channel; the first solution flowing through the at least one heat exchanger is heat exchanged with the second solution flowing through the at least one heat exchanger within the at least one heat exchanger.
In an embodiment of the present invention, the refrigeration system further includes:
the first feeding port is correspondingly arranged on the first freezing tank;
the first temperature sensor is arranged in the first freezing pool and used for sensing the temperature of the first solution;
the first feeding pump is correspondingly arranged at the first feeding port and is connected with the first temperature sensor, and the first feeding pump sends the first solution out of the first feeding port when the first temperature sensor senses that the temperature of the first solution reaches a first temperature;
the second feeding port is correspondingly arranged on the second freezing tank;
the second temperature sensor is arranged in the second freezing pool and used for sensing the temperature of the second solution;
and the second feeding pump is correspondingly arranged at the second feeding port and is connected with the second temperature sensor, and the second feeding pump sends the second solution out of the second feeding port when the second temperature sensor senses that the temperature of the second solution reaches a second temperature, wherein the first temperature is lower than the second temperature.
In an embodiment of the present invention, the refrigeration system further includes:
the first liquid level sensor is correspondingly arranged in the first freezing pool and used for sensing the liquid level of the first solution, and the first feeding pump is also connected with the first liquid level sensor and stops working when the first liquid level sensor senses that the liquid level of the first solution reaches a first height;
and the second liquid level sensor is correspondingly arranged in the second freezing pool and used for sensing the liquid level of the second solution, and the second feeding pump is also connected with the second liquid level sensor and stops working when the second liquid level sensor senses that the liquid level of the second solution reaches a second height.
In an embodiment of the present invention, the first circulation pump and the second circulation pump are centrifugal pumps.
In an embodiment of the present invention, the first feeding pump and the second feeding pump are variable frequency feeding pumps.
In an embodiment of the present invention, the refrigerator has a delivery pump, and the delivery pump is correspondingly disposed at the freezing water outlet.
In an embodiment of the present invention, the at least one heat exchanger includes: a first heat exchanger and a second heat exchanger connected in series.
In an embodiment of the present invention, the heat exchanger is a shell-and-tube heat exchanger, each of the shell-and-tube heat exchanger has a shell layer and a tube layer, wherein the first circulation channel communicates with the shell layer of the shell-and-tube heat exchanger, and the second circulation channel communicates with the tube layer of the shell-and-tube heat exchanger.
The utility model discloses utilize current refrigerating system's-30 ℃ freezing salt solution system, through increasing equipment such as shell-and-tube type heat exchanger, circulating pump, carry out cold volume with-16 ℃ freezing salt solution system and exchange to both can satisfy the cold demand of using of production, guarantee to produce required reaction temperature, promote the useless handling capacity of danger, can practice thrift the cost again.
Drawings
Fig. 1 is a schematic structural diagram of a refrigeration system according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a refrigeration system 100 according to a preferred embodiment of the present invention includes a first freezing tank 10, a refrigerator 20, a second freezing tank 30, at least one heat exchanger 40, a first circulation pump 50, and a second circulation pump 60. In the present embodiment, the heat exchanger 40 may include, for example, a first heat exchanger 41 and a second heat exchanger 42 connected in series. However, it is understood that in other embodiments, the number of the heat exchangers 40 may be only one, or more (e.g., three or more), which is not intended to limit the present invention.
The first freezing chamber 10 contains a first solution, which may be, for example, but not limited to, saline. The first freezing pool 10 has a first circulation water outlet 11, a freezing water outlet 12, a first circulation water return 13 and a freezing water return 14.
The freezing machine 20 is connected to the first freezing pool 10 through a freezing channel 101, wherein the first solution can flow through the freezing channel 101 from the freezing water outlet 12 through the freezing machine 20 for freezing and flow back to the first freezing pool 10 from the freezing water return port 14. In the present embodiment, the freezer 20 has a delivery pump 21 correspondingly disposed at the freezing water outlet 12, for example, the first solution can be delivered to the freezer 20 by starting the delivery pump 21 to be frozen to-30 ℃, and the first solution frozen to-30 ℃ is delivered back to the first freezing pool 10 through the freezing channel 101.
The second freezing tank 30 contains a second solution, such as, but not limited to, brine, and the second freezing tank 30 has a second circulation water outlet 31 and a second circulation water return 32.
Each of the heat exchangers 40 (including the first heat exchanger 41 and the second heat exchanger 42) has a first heat exchange water inlet a, a first heat exchange water outlet b, a second heat exchange water inlet c, and a second heat exchange water outlet d. In the present embodiment, the first heat exchanger 41 and the second heat exchanger 42 are in communication with the first freezing compartment 10 through a first circulation path 102, and the first heat exchanger 41 and the second heat exchanger 42 are in communication with the second freezing compartment 30 through a second circulation path 103. Preferably, the heat exchanger 40 may be, for example, a shell-and-tube heat exchanger, each shell-and-tube heat exchanger having a shell layer and a tube layer, wherein the first circulation channel 102 is, for example, connected to the shell layer of the corresponding shell-and-tube heat exchanger, and the second circulation channel 103 is connected to the tube layer of the corresponding shell-and-tube heat exchanger.
The first circulation pump 50 is correspondingly disposed at the first circulation water outlet 11. The second circulation pump 60 is correspondingly disposed at the second circulation water outlet 31. Preferably, the first circulation pump 50 and the second circulation pump 60 may be, for example, centrifugal pumps.
Wherein the first solution in the first freezing tank 10 can flow from the first circulation water outlet 11 through the at least one heat exchanger 40 and back to the first freezing tank 10 from the first circulation water return 13 through the first circulation pump 50 and the first circulation channel 102. More specifically, the first solution can flow out of the first circulation water outlet 11, for example, under the action of the first circulation pump 50, and flow into the shell layer of the first heat exchanger 41 from the first heat exchange water inlet a of the first heat exchanger 41 through the first circulation channel 102, then flow out of the first heat exchange water outlet b of the first heat exchanger 41, flow into the shell layer of the second heat exchanger 42 from the first heat exchange water inlet a of the second heat exchanger 42 through the first circulation channel 102, then flow out of the first heat exchange water outlet b of the second heat exchanger 42, and flow back to the first freezing tank 10 from the first circulation water return 13 through the first circulation channel 102.
The second solution in the second freezing tank 30 can flow from the second circulation water outlet 31 through the at least one heat exchanger 40 and back to the second freezing tank 30 from the second circulation water return 32 through the second circulation pump 60 and the second circulation channel 103. More specifically, the second solution can flow out from the second circulation water outlet 31, for example, under the action of the second circulation pump 60, and flow into the tube layer of the second heat exchanger 42 from the second heat exchange water inlet c of the second heat exchanger 42 via the second circulation channel 103, then flow out from the second heat exchange water outlet d of the second heat exchanger 42, flow into the tube layer of the first heat exchanger 41 from the second heat exchange water inlet c of the first heat exchanger 41 via the second circulation channel 103, then flow out from the second heat exchange water outlet d of the first heat exchanger 41, and flow back to the second freezing tank 30 from the second circulation water return 32 via the second circulation channel 103.
Wherein the first solution flowing through the first heat exchanger 41 and the second heat exchanger 42 exchanges heat with the second solution flowing through the first heat exchanger 41 and the second heat exchanger 42 in the first heat exchanger 41 and the second heat exchanger 42, respectively.
In the present invention, the refrigeration system 100 may further include a first feeding port, a first temperature sensor, a first feeding pump, a second feeding port, a second temperature sensor, and a second feeding pump (not shown in the figure).
Wherein, the first feeding port is correspondingly arranged on the first freezing tank 10. The first temperature sensor is disposed in the first freezing chamber 10, preferably, for example, at the first feeding port, and is configured to sense the temperature of the first solution. The first feeding pump is correspondingly arranged at the first feeding port and connected with the first temperature sensor, and the first feeding pump sends the first solution out of the first feeding port when the first temperature sensor senses that the temperature of the first solution reaches a first temperature, for example, when the first temperature sensor senses that the temperature of the first solution reaches-30 ℃, the first feeding pump can be started to convey the first solution from the first feeding port to a production workshop.
Wherein, the second feeding port is correspondingly arranged on the second freezing tank 30. The second temperature sensor is disposed in the second freezing chamber 30, preferably, for example, at the second feeding port, and is used for sensing the temperature of the second solution. The second feeding pump is correspondingly arranged at the second feeding port and is connected with the second temperature sensor, and the second feeding pump feeds the second solution out from the second feeding port when the second temperature sensor senses that the temperature of the second solution reaches a second temperature, wherein the first temperature is lower than the second temperature, for example, when the second temperature sensor senses that the temperature of the second solution reaches-16 ℃, the second feeding pump can be started to convey the second solution from the second feeding port to a production workshop.
In the present invention, the first feed pump and the second feed pump may be variable frequency feed pumps, for example.
In the present invention, the refrigeration system 100 may further include a first liquid level sensor and a second liquid level sensor (both not shown in the figure). The first liquid level sensor can be correspondingly arranged in the first freezing pool and used for sensing the liquid level of the first solution; and the first feeding pump is also connected with the first liquid level sensor and stops working when the first liquid level sensor senses that the liquid level of the first solution reaches a first height. The second liquid level sensor is correspondingly arranged in the second freezing pool and used for sensing the liquid level of the second solution; and the second feeding pump is also connected with the second liquid level sensor and stops working when the second liquid level sensor senses that the liquid level of the second solution reaches a second height. Therefore, the liquid levels of the first freezing pool 10 and the second freezing pool 30 can be respectively monitored through the first liquid level sensor and the second liquid level sensor, and are respectively interlocked with the first feeding pump, the second feeding pump, the first circulating pump, the second circulating pump and the like, so that the first solution and the second solution in the first freezing pool 10 and the second freezing pool 30 can be effectively prevented from overflowing.
The refrigeration system of the present invention can be applied to hazardous waste disposal, wherein the first freezing tank 10 can be, for example, a-30 ℃ freezing brine tank, and can be transported to a production plant when the temperature of the first solution (e.g., brine) contained therein reaches-30 ℃; the second freezing tank 30 may be, for example, a-16 ℃ frozen brine tank, and may be transported to a production plant when the temperature of the second solution (e.g., brine) contained therein reaches-16 ℃; and the first solution and the second solution can be respectively conveyed to the heat exchanger 40 through the first circulation pump 50 and the second circulation pump 60 via the first circulation channel 102 and the second circulation channel 103 for heat exchange, so that the cold energy of the first solution and the cold energy of the second solution can be fully exchanged, the temperature of the second solution after heat exchange reaches the production process index standard, and meanwhile, the first solution can also be fully utilized by the refrigerator 20 connected with the first solution to rapidly cool the first solution after heat exchange to-30 ℃ so as to reach the production process index standard.
The realization of-30 deg.C chilled water process flow, -16 deg.C chilled water process flow and cold exchange process flow by using the refrigerating system of the present invention will be described in detail with reference to FIG. 1
(1) -30 ℃ chilled water process: the first circulation pump 50 → the first heat exchanger 41 of the shell-and-tube type at the first stage → the second heat exchanger 42 of the shell-and-tube type at the second stage → the first circulation water returning port 13 of the first freezing tank 10 → the refrigerator evaporator transfer pump 21 → the refrigerator 20 cools to-30 ℃ → the first freezing tank 10.
(2) (2) -16 ℃ chilled water process flow: the second circulation pump 60 → the second heat exchanger 42 of the shell-and-tube type at the first stage → the first heat exchanger 41 of the shell-and-tube type at the second stage → the qualified temperature (i.e., -16 ℃) at the second feed port of the second freezing tank 30 is pumped to the production plant through the second feed.
(3) Cold exchange process flow:
the first circulation pump 50 sends the first solution (for example, the frozen brine with the temperature of-30 ℃) to the shell layer of the first heat exchanger 41 from the first circulation water outlet 11 of the first freezing pool 10, so that the whole shell layer of the first heat exchanger 41 is filled with the frozen brine with the temperature of-30 ℃ which is connected in series to the second heat exchanger 42 after going in low and high, and then the frozen brine goes back to the first freezing pool 10 through the first circulation water return port 13, the returned first solution is sent to the evaporator of the freezing pool 20 by the delivery pump 21 of the freezing pool 20 to be cooled to the temperature of-30 ℃ and then returns to the first freezing pool 10 for circular production.
The second circulation pump 60 sends the second solution (for example, the frozen brine at about-8 ℃) to the tube layer of the second heat exchanger 42 from the second circulation water outlet 31 of the second freezing tank 30, enters the tube layer of the first heat exchanger 41 after heat-cold exchange with the first solution (-30 ℃) in the shell layer, and sends the second solution to the second freezing tank 30 after heat-cold exchange with the first solution (-30 ℃) in the shell layer, and when the temperature of the second solution in the second freezing tank 30 reaches-16 ℃, the second solution can be sent to a production workshop from the second feeding port for use in the production workshop.
The utility model discloses a refrigerating system has following advantage:
(1) the first solution and the second solution can exchange heat in the tube layer and the shell layer of the heat exchanger by utilizing the two heat exchangers and the two circulating pumps, so that the temperature of the first solution and the second solution can reach the index standard of the production process.
(2) The refrigerating machine with larger margin of a refrigerating system at minus 30 ℃ is fully utilized, and the first solution after heat exchange can be quickly cooled to minus 30 ℃.
(3) Because the volumes of the two freezing pools are different, the overflow pools can be effectively avoided by adopting the liquid level and pump interlocking and adding the variable frequency speed regulation control.
(4) Whole scheme equipment only needs to increase two circulating pumps and two heat exchangers, and the investment only 10 ten thousand multiple points can satisfy the production demand, and if not carrying out technical transformation and only increasing one set of refrigerating unit then need 80 ten thousand more, consequently, the utility model discloses the effect is obvious after the transformation, and production is nimble adjustable with cold volume, has both saved the unnecessary investment, has satisfied the production demand again.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (8)
1. A refrigeration system, comprising:
the first freezing pool is internally provided with a first solution and is provided with a first circulating water outlet, a freezing water outlet, a first circulating water return port and a freezing water return port;
a freezing machine communicated with the first freezing pool through a freezing channel, wherein the first solution can flow through the freezing machine from the freezing water outlet through the freezing channel to be frozen and flow back to the first freezing pool from the freezing water return port;
the second freezing tank is internally provided with a second solution and is provided with a second circulating water outlet and a second circulating water return port;
the at least one heat exchanger is provided with a first heat exchange water inlet, a first heat exchange water outlet, a second heat exchange water inlet and a second heat exchange water outlet, the at least one heat exchanger is communicated with the first freezing tank through a first circulating channel, and the at least one heat exchanger is communicated with the second freezing tank through a second circulating channel;
the first circulating pump is correspondingly arranged at the first circulating water outlet; and
the second circulating pump is correspondingly arranged at the second circulating water outlet;
the first solution can flow from the first circulating water outlet, through the at least one heat exchanger and back to the first freezing tank from the first circulating water return port through the first circulating pump and the first circulating channel; the second solution can flow from the second circulating water outlet through the at least one heat exchanger and back to the second freezing tank from the second circulating water return port through the second circulating pump and the second circulating channel; the first solution flowing through the at least one heat exchanger is heat exchanged with the second solution flowing through the at least one heat exchanger within the at least one heat exchanger.
2. The refrigerant system as set forth in claim 1, further including:
the first feeding port is correspondingly arranged on the first freezing tank;
the first temperature sensor is arranged in the first freezing pool and used for sensing the temperature of the first solution;
the first feeding pump is correspondingly arranged at the first feeding port and is connected with the first temperature sensor, and the first feeding pump sends the first solution out of the first feeding port when the first temperature sensor senses that the temperature of the first solution reaches a first temperature;
the second feeding port is correspondingly arranged on the second freezing tank;
the second temperature sensor is arranged in the second freezing pool and used for sensing the temperature of the second solution;
and the second feeding pump is correspondingly arranged at the second feeding port and is connected with the second temperature sensor, and the second feeding pump sends the second solution out of the second feeding port when the second temperature sensor senses that the temperature of the second solution reaches a second temperature, wherein the first temperature is lower than the second temperature.
3. The refrigerant system as set forth in claim 2, further including:
the first liquid level sensor is correspondingly arranged in the first freezing pool and used for sensing the liquid level of the first solution, and the first feeding pump is also connected with the first liquid level sensor and stops working when the first liquid level sensor senses that the liquid level of the first solution reaches a first height;
and the second liquid level sensor is correspondingly arranged in the second freezing pool and used for sensing the liquid level of the second solution, and the second feeding pump is also connected with the second liquid level sensor and stops working when the second liquid level sensor senses that the liquid level of the second solution reaches a second height.
4. The refrigeration system of claim 1, wherein the first and second circulation pumps are centrifugal pumps.
5. The refrigerant system as set forth in claim 2, wherein said first feed pump and said second feed pump are variable frequency feed pumps.
6. The refrigeration system as recited in claim 1 wherein said freezer has a delivery pump disposed in correspondence with said chilled water outlet.
7. A refrigeration system according to any of claims 1 to 6, wherein said at least one heat exchanger comprises:
a first heat exchanger and a second heat exchanger connected in series.
8. The refrigeration system of claim 7 wherein the heat exchangers are shell and tube heat exchangers, each of the shell and tube heat exchangers having a shell layer and a tube layer, wherein the first circulation channel is connected to the shell layer of the corresponding shell and tube heat exchanger, and the second circulation channel is connected to the tube layer of the corresponding shell and tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499741.2U CN214469476U (en) | 2020-11-02 | 2020-11-02 | Refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499741.2U CN214469476U (en) | 2020-11-02 | 2020-11-02 | Refrigeration system |
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| Publication Number | Publication Date |
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| CN214469476U true CN214469476U (en) | 2021-10-22 |
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| CN202022499741.2U Active CN214469476U (en) | 2020-11-02 | 2020-11-02 | Refrigeration system |
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| CN (1) | CN214469476U (en) |
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- 2020-11-02 CN CN202022499741.2U patent/CN214469476U/en active Active
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