Improved temperature control system
Technical Field
The utility model belongs to the technical field of artifical influence weather, concretely relates to modified temperature control system.
Background
The cloud chamber is basic equipment for researching cloud physics and artificial influence weather, and can simulate key links of natural cloud and precipitation, including processes of aerosol particle hygroscopicity increase, activation, condensation increase and the like. Temperature control is needed during cloud chamber tests, most of domestic cloud chamber temperature control systems are generally divided into a heating path and a cooling path at present, corresponding pipeline valves are opened according to experimental needs, and the cooling rate is controlled by adjusting the flow rate and the pressure of fluid in pipelines. However, in order to expand the functionality of the laboratory and improve the feasibility of the test, the cloud and fog environment simulated by the cloud and fog laboratory needs to be rapidly cooled, and at the moment, the refrigerating unit needs to run at full load, so that higher requirements are provided for the control mode and the heat transfer and heat exchange process of the whole temperature control system. The traditional cooling mode has large heat exchange loss and low cooling efficiency in the rapid cooling process, not only limits the type and performance of cloud laboratory experiments, but also increases the refrigeration load and energy waste and increases the operation cost.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a modified temperature control system can realize high low temperature and rapid cooling in the laboratory.
In order to realize the purpose, the following technical scheme is adopted:
an improved temperature control system comprising: the system comprises a cooling device, a heating device, a control system and a temperature control pipeline;
the temperature control pipeline comprises a heating path, a rapid cooling path and an experiment path;
the cooling device comprises: the refrigeration system comprises a refrigerating unit, an external circulation refrigeration water pump and a refrigeration water tank; one end of the external circulation refrigeration water pump is connected with a water outlet of the refrigeration unit, and the other end of the external circulation refrigeration water pump is respectively connected with the heating pipeline, the rapid cooling pipeline and the experimental pipeline through the main pipeline switching valve;
the temperature raising device includes: a plate heat exchanger; the temperature rising path is subjected to heat exchange through the plate heat exchanger and then is led into a laboratory fluid pipeline, the rapid temperature lowering path is directly communicated with the laboratory fluid pipeline, the laboratory path is communicated with the laboratory fluid pipeline through a freezing water tank and an internal circulation freezing water pump in sequence, and the laboratory fluid pipeline is led into the laboratory;
the control system includes: the temperature sensors are respectively arranged in the heating path, the rapid cooling path, the experiment path and the laboratory and are connected with the controller; the controller is respectively and simultaneously connected with the refrigerating unit, the external circulation refrigerating water pump, the main pipeline switching valve and the internal circulation refrigerating water pump.
Further, a temperature rise loop is arranged between the temperature rise path and the laboratory; one end of the warming loop is communicated with the plate heat exchanger and the warming loop, and the other end of the warming loop is communicated with the outlet of the laboratory fluid pipeline to form circulation.
Furthermore, the rapid cooling way with be equipped with the rapid cooling return circuit between the laboratory, rapid cooling return circuit one end with the export intercommunication of laboratory fluid pipeline, the other end directly with refrigerating unit's entry intercommunication forms the circulation.
Furthermore, an experimental path loop is arranged between the experimental path and the laboratory, one end of the experimental path loop is communicated with the outlet of the fluid pipeline of the laboratory, and the other end of the experimental path loop is introduced into the freezing water tank to form circulation.
Furthermore, a warming path electromagnetic valve is arranged in the warming path, a rapid cooling path electromagnetic valve 10 is arranged in the rapid cooling path, and an experiment path electromagnetic valve is arranged in the experiment path.
Furthermore, the temperature in the freezing water tank is a set value, and when the temperature in the freezing water tank is higher than the set value, the external circulation freezing water pump is started, so that circulation between the freezing unit and the freezing water tank is realized, and the temperature in the freezing water tank is reduced.
Furthermore, a coolant is arranged in the warming path, exchanges heat in the plate heat exchanger, and enters the laboratory fluid pipeline after warming, so that the temperature rise of the laboratory is realized.
Furthermore, a coolant is arranged in the rapid cooling way, and the coolant in the rapid cooling way is directly pumped into a fluid pipeline of a laboratory by the external circulation chilled water pump, so that the temperature of the laboratory is reduced.
Further, the temperature raising apparatus further includes: the hot water pump is respectively connected with a water outlet of the hot water tank and an inlet of the pipeline heater; one end of the plate heat exchanger is connected with an outlet of the pipeline heater, and the other end of the plate heat exchanger is communicated with the hot water tank.
Compared with the prior art, the utility model discloses following profitable technological effect has:
1. the embodiment of the utility model provides a temperature control system, in traditional temperature control pipeline that rises and falls, newly-increased rapid cooling way, refrigerating unit need be with the maximum load operation during rapid cooling to the fastest cooling rate draws low laboratory temperature, during the coolant that the direct pump sending of extrinsic cycle frozen water pump was cooled down through refrigerating unit gets into the laboratory, the coolant that flows from laboratory fluid pipeline apopore does not get into the freezing water tank and directly gets into refrigerating unit, the flow path and the cooling heat load of coolant in the freezing water tank have been reduced.
2. The embodiment of the utility model provides a temperature control system, three temperature control pipeline of group of main line diverter valve UNICOM reduce the temperature control pipeline complexity, and diverter valve switching speed is fast, improves test efficiency and stability.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an improved temperature control system;
in the figure: 1-a hot water pump, 2-a pipeline heater, 3-a plate heat exchanger, 4-an external circulation refrigeration water pump, 5-an internal circulation refrigeration water pump, 6-a heating-up circuit electromagnetic valve, 7-a rapid cooling-down circuit electromagnetic valve, 8-a laboratory circuit electromagnetic valve, 9-a heating-up circuit, 91-a heating-up circuit, 10-a rapid cooling-down circuit, 101-a rapid cooling-down circuit, 11-a laboratory circuit, 111-a laboratory circuit, 12-a main pipeline switching valve, 13-a control system, 14-a hot water tank, 15-a laboratory fluid pipeline, 16-a laboratory, 17-a refrigeration unit and 18-a refrigeration water tank.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
As shown in fig. 1, an improved temperature control system includes: the system comprises a cooling device, a heating device, a control system and a temperature control pipeline; the cooling equipment is used for reducing the temperature of the laboratory to a set temperature; the temperature raising equipment is used for raising the temperature of the laboratory to a set temperature; the control system is used for controlling the operation of each device in a centralized manner and detecting and regulating the indoor temperature.
The temperature control pipeline comprises a temperature rising pipeline 9, a rapid temperature reducing pipeline 10 and an experiment pipeline 11.
The cooling device comprises: a refrigerating unit 17, an external circulation refrigerating water pump 4 and a refrigerating water tank 18; one end of the external circulation chilled water pump 4 is connected with a water outlet of a refrigerating unit 17, and the other end of the external circulation chilled water pump is respectively connected with a heating path 9, a rapid cooling path 10 and an experimental path 11 through a main path switching valve 12; in order to realize the low-temperature working condition of the laboratory, the refrigerating unit 17 adopts a cascade refrigerating unit, and the refrigerating water tank 18 is used for preserving heat to reduce the cold loss of the secondary refrigerant.
The temperature raising device includes: the system comprises a hot water tank 14, a hot water pump 1, a pipeline heater 2 and a plate heat exchanger 3; the hot water pump 1 is respectively connected with a water outlet of the hot water tank 14 and an inlet of the pipeline heater 2; one end of the plate heat exchanger 3 is connected with an outlet of the pipeline heater 2, and the other end of the plate heat exchanger is communicated with the hot water tank 14; the temperature rising path 9 is communicated with a laboratory fluid pipeline 15 after heat exchange through the plate heat exchanger 3, the rapid temperature lowering path 10 is directly communicated with the laboratory fluid pipeline 15, the laboratory path 11 is communicated with the laboratory fluid pipeline 15 through a freezing water tank 18 and an internal circulation freezing water pump 5 in sequence, and the laboratory fluid pipeline 15 is communicated with the inside of a laboratory 16 to deliver secondary refrigerant to the laboratory 16.
The control system includes: the controller 13 and the temperature sensors are respectively arranged in the temperature rising path 9, the rapid temperature reducing path 10, the experiment path 11 and the laboratory 16 and are connected with the controller 13; the controller 13 is respectively and simultaneously connected with the refrigerating unit 17, the external circulation refrigerating water pump 4, the main pipeline switching valve 12 and the internal circulation refrigerating water pump 5. The controller 13 can collect temperature information of liquid in the temperature control pipeline and temperature information in the laboratory, and adjust the temperature reduction equipment or parameters of the temperature rise equipment according to the collected temperature information to stabilize the indoor temperature.
A temperature rise loop 91 is arranged between the temperature rise path 9 and the laboratory 16; one end of the warming loop 91 is communicated with the plate heat exchanger 3 and the warming loop 9, and the other end of the warming loop is communicated with the outlet of the laboratory fluid pipeline 15 to form circulation. Rapid cooling way 10 with be equipped with rapid cooling return circuit 101 between the laboratory 16, rapid cooling return circuit 101 one end with the export intercommunication of laboratory fluid pipeline 15, the other end directly with refrigerating unit 17's entry intercommunication forms the circulation. An experimental path loop 111 is arranged between the experimental path 11 and the laboratory 16, one end of the experimental path loop 111 is communicated with an outlet of the laboratory fluid pipeline 15, and the other end of the experimental path loop 111 is introduced into the chilled water tank 18 to form circulation.
The temperature rise road 9 is provided with a temperature rise road electromagnetic valve 6, the rapid temperature decrease road 10 is provided with a rapid temperature decrease road electromagnetic valve 10, and the experiment road 11 is provided with an experiment road electromagnetic valve 8 which is respectively used for controlling the access and the open circuit of the corresponding pipeline.
The internal circulation chilled water pump 5 is respectively connected with the chilled water tank 18 and the laboratory fluid pipeline 15 to realize the circulation of secondary refrigerant; the temperature in the freezing water tank 18 is a set value, and when the temperature in the freezing water tank 18 is higher than the set value, the external circulation freezing water pump 4 is started, so that circulation between the freezing unit 17 and the freezing water tank 18 is realized, and the temperature in the freezing water tank 18 is reduced. And a coolant is arranged in the warming path 9, exchanges heat in the plate heat exchanger 3, and enters the laboratory fluid pipeline 15 after warming, so that the temperature rise of the laboratory is realized. The rapid cooling way 10 is internally provided with a coolant, and the external circulation chilled water pump 4 directly pumps the coolant in the rapid cooling way 10 to the laboratory fluid pipeline 15, so that the temperature of the laboratory is reduced.
In the temperature control system, the temperature sensors connected with the controller 13 are respectively arranged on the temperature rise path 9, the rapid temperature decrease path 10 and the experiment path 11; the controller 13 can monitor the temperature of the liquid in the warming path 9, the rapid cooling path 10 and the experiment path 11, and the temperature information in the laboratory 16, and adjust the indoor temperature of the cooling device or the operation state of the warming device according to the acquired temperature information.
The temperature control method of the temperature control system comprises the following steps:
1. during laboratory rapid cooling, controller 13 sets up the target indoor temperature in laboratory 16, opens refrigerating unit 17 and outer circulation frozen water pump 4, switches over main pipeline diverter valve 12 to rapid cooling way 10, opens rapid cooling way solenoid valve 7, and the secondary refrigerant passes through laboratory fluid pipeline 15 and gets into the laboratory, reduces indoor temperature rapidly, and the secondary refrigerant after the intensification flows into refrigerating unit 17 through rapid cooling return circuit 101 again and realizes the circulation. When the feedback temperature of the temperature sensor in the laboratory 16 reaches the set target indoor temperature, the electromagnetic valve 7 of the rapid cooling path and the refrigerating unit 17 are closed.
2. When the experiment temperature is kept stable, the controller 13 sets the target indoor maintenance temperature of the laboratory 16, the main pipeline switching valve 12 is switched to the experiment pipeline 11, the electromagnetic valve 8 of the experiment pipeline is opened, the secondary refrigerant flows into the freezing water tank 18, the internal circulation freezing water pump 5 pumps the secondary refrigerant of the freezing water tank to enter the laboratory through the fluid pipeline 15 for heat exchange, the target indoor maintenance temperature is kept unchanged, and the heated secondary refrigerant circulates to the freezing water tank 18 through the experiment pipeline loop 111.
3. When the temperature is raised after the experiment, the controller 13 sets the target indoor temperature of the laboratory 16, switches the main line switching valve 12 to the temperature raising line 9, opens the temperature raising line electromagnetic valve 6, and the coolant flows into the plate heat exchanger 3. And simultaneously, the hot water pump 1 and the pipeline heater 2 are opened, and the water is heated and then sent to the plate heat exchanger 3. In the plate heat exchanger 3, the water exchanges heat with the secondary refrigerant to heat the secondary refrigerant, and the heated secondary refrigerant enters a laboratory through a laboratory fluid pipeline 15 to realize the indoor temperature rise and reach the target indoor temperature.
The embodiment of the utility model provides a temperature control system, in traditional temperature control pipeline that rises and falls, newly-increased rapid cooling way, refrigerating unit need be with the maximum load operation during rapid cooling to the fastest cooling rate draws low laboratory temperature, during the coolant that the direct pump sending of extrinsic cycle frozen water pump was cooled down through refrigerating unit gets into the laboratory, the coolant that flows from laboratory fluid pipeline apopore does not get into the freezing water tank and directly gets into refrigerating unit, the flow path and the cooling heat load of coolant in the freezing water tank have been reduced. The main pipeline switching valve is communicated with the three groups of temperature control pipelines, complexity of the temperature control pipelines is reduced, switching speed of the switching valve is high, and test efficiency and stability are improved.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.