Water temperature control system of aquatic product transport vehicle

Abstract

A water temperature control system of an aquatic product transport vehicle relates to the technical field of control systems and comprises a vehicle-mounted refrigerating system, a backflow storage tank and a water pool. A heat exchange structure is arranged in the water pool, the inlet end of the heat exchange structure is connected with a water premixing device, a backflow storage tank is connected with the water premixing device through a normal-temperature water outlet pipeline, the backflow storage tank is connected with a vehicle-mounted refrigerating system through a heat exchange pipeline, and the vehicle-mounted refrigerating system is connected with the water premixing device through a cooling water outlet pipeline. The problems that in the prior art, a vehicle-mounted compressor on an aquatic product transport vehicle is used for control, and due to the fact that temperature control of the vehicle-mounted compressor is an interval temperature, the temperature of a pool fluctuates in a reciprocating mode in the interval temperature, and the survival rate of aquatic products in the pool is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of control systems, and in particular to a water temperature control system for an aquatic product transport vehicle. Background Art

[0002] ‌Aquatic product transport vehicles are mainly used to transport fresh aquatic products, such as fish, shrimp, shellfish and other aquatic products, to ensure that these aquatic products remain fresh during transportation. Through advanced equipment and technology, aquatic product transport vehicles can ensure a high survival rate of aquatic products during transportation, usually reaching more than 95%. Water temperature control is crucial in aquatic product transportation. The main purpose is to ensure that the water temperature is within an appropriate range, because it directly affects the survival rate of aquatic products. Appropriate water temperature can reduce the stress response of aquatic products, reduce the occurrence of diseases, and thus prolong their survival time.

[0003] As the existing technology is used, its shortcomings are gradually exposed, mainly in the following aspects: First, the temperature of the water pool in the existing aquatic product transport vehicle is controlled by the on-board compressor on the aquatic product transport vehicle. Since the temperature control of the on-board compressor is a range temperature, the temperature of the water pool fluctuates back and forth within a range temperature, which affects the survival rate of the aquatic products in the water pool.

[0004] Second, the heat exchange structure in the existing pool has a large temperature difference between the inlet and outlet of the heat exchange structure, which makes it impossible for the aquaculture water in the pool to exchange heat evenly with the heat exchange structure, resulting in different temperatures between areas in the pool, affecting the survival rate of aquatic products.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the defects in the prior art, the present invention provides a water temperature control system for aquatic product transport vehicles, which is used to solve the problem that traditional technology uses an on-board compressor on the aquatic product transport vehicle for control. Since the temperature control of the on-board compressor is a range temperature, the temperature of the water pool fluctuates back and forth within a range of temperatures, which affects the survival rate of aquatic products in the water pool.

[0007] To achieve the above object, the present invention provides the following technical solutions: The water temperature control system of the aquatic product transport vehicle includes an on-board refrigeration system, a reflux storage tank and a water pool; a heat exchange structure is arranged in the water pool, and a pre-mixer is connected to the inlet end of the heat exchange structure. The reflux storage tank is connected to the pre-mixer via a normal temperature water outlet pipeline, the reflux storage tank is connected to the vehicle-mounted refrigeration system via a heat exchange pipeline, and the vehicle-mounted refrigeration system is connected to the pre-mixer via a cooling water outlet pipeline.

[0008] As an optimized solution, a plurality of water pools are arranged in parallel, and each of the water pools is connected to the pre-mixer.

[0009] As an optimized solution, the outlet end of the heat exchange structure is connected to the reflux storage tank via a reflux pipeline, and a reflux water pump is connected to the reflux pipeline.

[0010] As an optimized solution, the water premixer is connected to a circulation pipeline connected to the return pipeline, and the circulation pipeline is connected to a water return solenoid valve.

[0011] As an optimized solution, a stirring structure is provided in the water premixer.

[0012] As an optimized solution, the water premixer is provided with a cooling water inlet pipeline connected to the cooling water outlet pipeline, and the cooling water inlet pipeline is provided with a first electric proportional regulating valve.

[0013] As an optimized solution, the water premixer is provided with a normal temperature water inlet pipeline connected to the normal temperature water outlet pipeline, and the normal temperature water inlet pipeline is connected to a second electric proportional regulating valve.

[0014] As an optimized solution, the pre-mixer is provided with a mixed water outlet pipeline connected to the inlet end of the heat exchange structure, and the mixed water outlet pipeline is connected to a mixed water solenoid valve.

[0015] As an optimized solution, the heat exchange structure includes a sealed cavity located inside the water pool, a heat exchange water pipe is flatly coiled in the sealed cavity, the inlet end of the heat exchange water pipe is connected to the mixed water outlet pipeline, and the outlet end of the heat exchange water pipe is connected to the return pipeline.

[0016] As an optimized solution, the sealed cavity is filled with a temperature-uniform liquid, and a flow-generating pump is rotatably provided in the sealed cavity.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By setting a pre-mixer between the water pool and the vehicle-mounted refrigeration system, the cooling water entering the water pool for heat exchange can be pre-mixed in advance, so that it reaches the aquaculture water temperature, and then the water pool is heat exchanged through the heat exchange structure. This can overcome the problem of the traditional technology of using the vehicle-mounted compressor on the aquatic product transport vehicle to control the water pool temperature, which causes the temperature to fluctuate within a certain range, thereby improving the survival rate of aquatic products in the water pool. A sealed cavity is provided inside the water pool, and the sealed cavity is filled with a uniform temperature liquid that is completely separated from the aquaculture water. A flow pump is used to realize the circulation of uniform liquid so that it can evenly exchange heat with the internal heat exchange water pipe. The uniform temperature liquid can improve the heat exchange efficiency with the heat exchange water pipe, and can also ensure uniform and synchronous cooling of various areas in the water pool, thereby ensuring the temperature consistency between areas in the water pool and overcoming the influence of different temperatures between areas in the water pool on the survival rate of aquatic products; And the flat-lay coiled heat exchange pipe can further improve the uniformity of heat exchange in the water pool; Several of the pools are independently connected with pre-mixing devices to meet the needs of individual temperature control, and can be used for breeding and transportation of aquatic products with different temperature requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic structural diagram of the water premixer of the present invention.

[0020] In the figure: 1- reflux storage tank; 2- pool; 3- pre-mixer; 4- normal temperature water outlet pipeline; 5- heat exchange pipeline; 6- normal temperature water inlet pipeline; 7- cooling water inlet pipeline; 8- first electric proportional control valve; 9- second electric proportional control valve; 10- return water solenoid valve; 11- mixed water solenoid valve; 12- circulation pipeline; 13- mixed water outlet pipeline; 14- reflux pipeline; 15- reflux water pump; 16- heat exchange water pump; 17- circulation heat exchanger; 18- external radiator; 19- on-board compressor; 20- heat exchange water pipe; 21- flow pump; 22- first pre-mix temperature sensor; 23- second pre-mix temperature sensor; 24- stirring structure; 25- cooling water outlet pipeline; 26- pool temperature sensor; 27- mixed temperature sensor. DETAILED DESCRIPTION

[0021] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0022] like Figure 1 and Figure 2As shown, the water temperature control system of the aquatic product transport vehicle includes an on-board refrigeration system, a reflux storage tank 1 and a water pool 2; a heat exchange structure is provided in the water pool 2, and a pre-mixer 3 is connected to the inlet end of the heat exchange structure. The reflux storage tank 1 is connected to the pre-mixer 3 via a normal temperature water outlet pipeline 4 , the reflux storage tank 1 is connected to the vehicle refrigeration system via a heat exchange pipeline 5 , and the vehicle refrigeration system is connected to the pre-mixer 3 via a cooling water outlet pipeline 25 .

[0023] A plurality of water pools 2 are arranged in parallel, and each water pool 2 is connected to a water premixer 3 .

[0024] The outlet end of the heat exchange structure is connected to the reflux storage tank 1 through a reflux pipeline 14 , and a reflux water pump 15 is connected to the reflux pipeline 14 .

[0025] The pre-mixing device 3 is connected to a circulation pipeline 12 connected to a return pipeline 14 , and the circulation pipeline 12 is connected to a return water solenoid valve 10 .

[0026] A stirring structure 24 is provided in the pre-mixing device 3 .

[0027] The premixer 3 is provided with a cooling water inlet pipeline 7 connected to the cooling water outlet pipeline 25 , and the cooling water inlet pipeline 7 is provided with a first electric proportional regulating valve 8 .

[0028] The premixer 3 is provided with a normal temperature water inlet pipeline 6 connected to the normal temperature water outlet pipeline 4 , and the normal temperature water inlet pipeline 6 is connected to a second electric proportional regulating valve 9 .

[0029] The pre-mixing device 3 is provided with a mixed water outlet pipeline 13 connected to the inlet end of the heat exchange structure, and the mixed water outlet pipeline 13 is connected to a mixed water solenoid valve 11 .

[0030] The heat exchange structure includes a sealed cavity located inside the water pool 2 , in which a heat exchange water pipe 20 is flatly coiled. The inlet end of the heat exchange water pipe 20 is connected to the mixed water outlet pipeline 13 , and the outlet end of the heat exchange water pipe 20 is connected to the return pipeline 14 .

[0031] The sealed cavity is filled with a temperature-uniform liquid, and a flow-generating pump 21 is rotatably arranged in the sealed cavity.

[0032] The heat exchange pipeline 5 is connected to a heat exchange water pump 16 .

[0033] The normal temperature water inlet pipeline 6 is connected to a first premix temperature sensor 22 .

[0034] The cooling water inlet pipeline 7 is connected to a second premix temperature sensor 23 .

[0035] A mixing temperature sensor 27 is connected to the pre-mixing device 3 .

[0036] A water pool temperature sensor 26 is provided in the water pool 2 .

[0037] The vehicle-mounted refrigeration system includes a circulating heat exchanger 17 and an external radiator 18 . The circulating heat exchanger 17 and the external radiator 18 are connected via a vehicle-mounted compressor 19 . The circulating heat exchanger 17 is connected to the heat exchange pipeline 5 .

[0038] By arranging a pre-mixer 3 between the water pool 2 and the vehicle-mounted refrigeration system, the cooling water entering the water pool 2 for heat exchange can be pre-mixed in advance, so that it reaches the aquaculture water temperature, and then the water pool 2 is heat exchanged through the heat exchange structure, which can overcome the problem that the temperature of the water pool 2 fluctuates back and forth within a temperature range due to the control of the vehicle-mounted compressor on the aquatic product transport vehicle in the traditional technology, thereby improving the survival rate of the aquatic products in the water pool 2; A sealed cavity is provided inside the pool 2, and the sealed cavity is filled with a uniform temperature liquid that is completely separated from the aquaculture water. A flow pump 21 is used to realize the circulation of uniform liquid so that it can evenly exchange heat with the internal heat exchange water pipe 20. The uniform temperature liquid can improve the heat exchange efficiency with the heat exchange water pipe 20, and can also ensure uniform and synchronous cooling of various areas in the pool 2, thereby ensuring the temperature consistency between the areas in the pool 2 and overcoming the influence of different temperatures between the areas in the pool 2 on the survival rate of aquatic products; The heat exchange water pipe 20 is arranged in a flat coiled manner, which can further improve the uniformity of heat exchange to the water pool 2; A plurality of water pools 2 are independently connected to pre-mixing water devices 3 to realize the requirement of individual temperature control, and can be used for breeding and transportation of aquatic products with different temperature requirements.

[0039] The working principle of this system is: The outlet of the reflux storage tank 1 is connected to the inlet of the heat exchange water pump 16, the outlet of the heat exchange water pump 16 is connected to the inlet of the circulating heat exchanger 17, the outlet of the circulating heat exchanger 17 is connected to the first electric proportional regulating valve 8, and the first electric proportional regulating valve 8 is connected to the inlet of the pre-mixing water device 3; the circulating water inside the reflux storage tank 1 is pressurized by the heat exchange water pump 16 and enters the circulating heat exchanger 17. After the temperature is reduced, it enters the pre-mixing water device 3 through the first electric proportional regulating valve 8; the on-board compressor 19 is running to dissipate the heat absorbed by the circulating heat exchanger 17 to the outside of the vehicle through the external radiator 18; The other outlet of the reflux storage tank 1 is connected to the second electric proportional regulating valve 9, and the second electric proportional regulating valve 9 is connected to the other inlet of the pre-mixing device 3; the circulating water inside the reflux storage tank 1 enters the pre-mixing device 3 through the second electric proportional regulating valve 9; The inlet of the first electric proportional regulating valve 8 is connected to a first premixing temperature sensor 22, and the detection temperature is T1. The inlet of the second electric proportional regulating valve 9 is connected to a second premixing temperature sensor 23, and the detection temperature is T2. The premixing water device 3 is internally equipped with a mixing temperature sensor 27, and the detection temperature is T3. In the cooling state, T2>T3>T1. In order to make the temperature T3 of the mixed water quickly approach the target set temperature, the openings of the first electric proportional regulating valve 8 and the second electric proportional regulating valve 9 are adjusted according to the temperatures T1 and T2 to adjust the ratio of cold and hot water. A stirring structure 24 is installed at the bottom of the premixer 3 to make the temperature of the mixed water uniform. A return solenoid valve 10 is installed at the outlet end of the premixer 3. When the temperature T3 of the mixed water does not reach the target set temperature, in order to avoid the premixer 3 from overflowing, the substandard mixed water passes through the return solenoid valve 10 and is pressurized by the reflux water pump 15, and then flows into the reflux storage tank 1 to continue circulating.

[0040] A mixed water solenoid valve 11 is installed at the outlet of the premixer 3. When the temperature T3 of the mixed water does not reach the target set temperature, the mixed water solenoid valve 11 is in a closed state; when the temperature T3 of the mixed water reaches the target set temperature, the return water solenoid valve 10 is closed, the mixed water solenoid valve 11 is opened, and the mixed water with the standard temperature enters the heat exchange structure; After the mixed water enters the heat exchange structure and the water pool 2 for heat exchange, it is pressurized by the reflux water pump 15 from the outlet end of the heat exchange water pipe 20 and flows into the reflux storage tank 1 to continue circulating.

[0041] There is a pool temperature sensor 26 in the pool 2, and the detected temperature is T4. The outlet water temperature of the mixed water is adjusted according to the difference between T4 and the target temperature. After a period of adjustment, the heat absorbed by the pool 2 from the heat exchange structure and the heat dissipated by the pool 2 to the outside reach a heat exchange balance, and the actual temperature T4 of the pool 2 tends to be constant.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. 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, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. The water temperature control system of aquatic product transport vehicle is characterized by: The invention comprises an on-vehicle refrigeration system, a reflux storage tank (1) and a water pool (2); a heat exchange structure is provided in the water pool (2); the inlet end of the heat exchange structure is connected to a pre-mixing device (3). The reflux storage tank (1) is connected to the pre-mixer (3) via a normal temperature water outlet pipeline (4), the reflux storage tank (1) is connected to the vehicle-mounted refrigeration system via a heat exchange pipeline (5), and the vehicle-mounted refrigeration system is connected to the pre-mixer (3) via a cooling water outlet pipeline (25).

2. The water temperature control system for aquatic product transport vehicle according to claim 1 is characterized in that: A plurality of water pools (2) are arranged in parallel, and each of the water pools (2) is respectively connected to the pre-mixing device (3).

3. The water temperature control system for aquatic product transport vehicle according to claim 2 is characterized in that: The outlet end of the heat exchange structure is connected to the reflux storage tank (1) via a reflux pipeline (14), and a reflux water pump (15) is connected to the reflux pipeline (14).

4. The water temperature control system for aquatic product transport vehicle according to claim 3 is characterized in that: The pre-mixing device (3) is connected to a circulation pipeline (12) connected to the return pipeline (14), and the circulation pipeline (12) is connected to a return water solenoid valve (10).

5. The water temperature control system for aquatic product transport vehicle according to claim 4, characterized in that: The water premixer (3) is provided with a stirring structure (24).

6. The water temperature control system for aquatic product transport vehicle according to claim 5, characterized in that: The premixer (3) is provided with a cooling water inlet pipeline (7) connected to the cooling water outlet pipeline (25), and the cooling water inlet pipeline (7) is provided with a first electric proportional regulating valve (8).

7. The water temperature control system for aquatic product transport vehicle according to claim 6, characterized in that: The premixer (3) is provided with a normal temperature water inlet pipeline (6) connected to the normal temperature water outlet pipeline (4), and the normal temperature water inlet pipeline (6) is connected to a second electric proportional regulating valve (9).

8. The water temperature control system for aquatic product transport vehicle according to claim 7, characterized in that: The pre-mixing device (3) is provided with a mixed water outlet pipeline (13) connected to the inlet end of the heat exchange structure, and the mixed water outlet pipeline (13) is connected to a mixed water solenoid valve (11).

9. The water temperature control system for aquatic product transport vehicle according to claim 8, characterized in that: The heat exchange structure comprises a sealed cavity located inside the water pool (2), a heat exchange water pipe (20) being flatly coiled inside the sealed cavity, the inlet end of the heat exchange water pipe (20) being connected to the mixed water outlet pipeline (13), and the outlet end of the heat exchange water pipe (20) being connected to the return pipeline (14).

10. The water temperature control system for aquatic product transport vehicle according to claim 9, characterized in that: The sealed cavity is filled with a temperature-uniform liquid, and a flow-generating pump (21) is rotatably arranged in the sealed cavity.

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