CN210981810U - Novel heat exchanger comprehensive experiment table - Google Patents
Novel heat exchanger comprehensive experiment table Download PDFInfo
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- CN210981810U CN210981810U CN201920969549.XU CN201920969549U CN210981810U CN 210981810 U CN210981810 U CN 210981810U CN 201920969549 U CN201920969549 U CN 201920969549U CN 210981810 U CN210981810 U CN 210981810U
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Abstract
The utility model relates to a novel heat exchanger comprehensive experiment platform, including the cooling water system, hot water system and cooling water cooling system three, this novel experiment platform device uses P L C programmable controller CPU226 as host system, regard EM231 and EM235 as analog input module, regard EM232 as analog output module, realized the fan through the relay, the variable frequency water pump, the following current solenoid valve, the solenoid valve against the current, plate heat exchanger return circuit solenoid valve, shell and tube heat exchanger return circuit solenoid valve, the control of sleeve heat exchanger return circuit solenoid valve, use the siemens touch-sensitive screen as the host computer simultaneously, human-computer interaction function is outstanding.
Description
Technical Field
The invention relates to a novel heat exchanger comprehensive experiment table, and belongs to the field of heat exchanger teaching instruments.
Background
The heat exchanger performance test experiment table is mainly used for testing the performance of a heat exchanger to obtain the change rule of the heat exchange quantity of the heat exchanger along with parameters such as flow, temperature and the like. However, the existing heat exchanger performance test experimental equipment generally has the problems of unstable cold and heat source temperature, poor real-time performance of data acquisition and performance analysis, inconvenient operation and the like, has a single test function, can realize few experimental items, and even can not complete the purpose of the experiment. The culture conditions of the innovative talents cannot be met. Therefore, it is very important to develop research and development work on a novel laboratory bench.
Disclosure of Invention
The invention aims to overcome the performance defects of the old experiment table, and provides a novel heat exchanger comprehensive experiment table, which realizes the constancy of the temperature of a cold water tank through a cold water radiating loop, adopts an electromagnetic valve to control the switching of the on-off of a water path and the forward and reverse flow modes, realizes the acquisition and real-time display of the experiment temperature, the pressure and the flow through a P L C control module, and completes the automatic control of equipment such as a regulating valve, a pump, a fan and the like.
The technical principle and the technical scheme of the invention are as follows:
the novel heat exchanger experiment table comprises a cold water system, a hot water system and a cold water heat dissipation system.
The experimental bench integrates a double-pipe heat exchanger, a shell-and-tube heat exchanger and a plate heat exchanger, hot water and cold water exchange heat in the heat exchanger, a cold water system comprises a cold water tank, a cold water pump, a first electric ball valve, a first intelligent turbine flowmeter, a first stop valve, a first countercurrent electromagnetic valve, a first cocurrent electromagnetic valve, a second countercurrent electromagnetic valve, a first plate electromagnetic valve, a first sleeve electromagnetic valve, a first shell electromagnetic valve, a second sleeve electromagnetic valve, a second shell electromagnetic valve, a second plate electromagnetic valve, a double-pipe heat exchanger, a shell-and-tube heat exchanger, a plate heat exchanger, a first pressure transmitter and a third pressure transmitter, wherein the outlet of the cold water tank is communicated with the inlet of the cold water pump, the outlet of the cold water pump is connected with the inlet of the first electric ball valve, the outlet of the first electric ball valve is connected, the first stop valve is connected with an inlet of a third pressure transmitter, one path of an outlet of the third pressure transmitter is connected with an inlet of a first downstream solenoid valve, the other path of the outlet of the third pressure transmitter is connected with an inlet of a second countercurrent solenoid valve, one path of an outlet of the first downstream solenoid valve is connected with an inlet of a first plate-type solenoid valve, the other path of the outlet of the first downstream solenoid valve is connected with an inlet of a first sleeve-type solenoid valve, the other path of the outlet of the first plate-type solenoid valve is connected with an inlet on the right side of a plate-type heat exchanger, an outlet of the first sleeve-type solenoid valve is connected with an inlet on the left side of the sleeve-type heat exchanger, an outlet of the first sleeve-type solenoid valve is connected with an inlet on the right side of the sleeve-type heat exchanger, an outlet of the first cocurrent solenoid valve is connected, The second shell solenoid valve, the import of second plate-type solenoid valve, the export of second sleeve solenoid valve is connected shell and tube heat exchanger left side import, the export of second shell solenoid valve is connected shell and tube heat exchanger right side import, the import of second plate-type solenoid valve exit linkage plate heat exchanger right side, the import of second backward flow solenoid valve exit linkage second following current solenoid valve, the import of first backward flow solenoid valve is connected all the way in second following current solenoid valve export, the import of another way connection first pressure transmitter, the import of first pressure transmitter export connecing cold water tank upside. The hot water system comprises a double-pipe type heat exchanger, a shell-and-tube type heat exchanger, a plate type heat exchanger, a second intelligent turbine flowmeter, a second electric ball valve, a hot water pump, a hot water tank, an electromagnetic three-way valve, a third double-pipe electromagnetic valve, a third shell electromagnetic valve, a third plate type electromagnetic valve, a second pressure transmitter and a fourth pressure transmitter, wherein the outlet of the hot water tank is connected with the inlet of the hot water pump, the outlet of the hot water pump is connected with the inlet of the second electric ball valve, the outlet of the second electric ball valve is connected with the inlet of the second intelligent turbine flowmeter, the outlet of the second intelligent turbine flowmeter is connected with the inlet of the second pressure transmitter, the outlet of the second pressure transmitter is connected with the inlet of the third double-pipe type electromagnetic valve, the left side of the double-pipe type heat exchanger is connected with the inlet of the electromagnetic, an outlet on the upper side of the shell-and-tube heat exchanger is connected with an inlet on the upper side of the electromagnetic three-way valve, a solenoid valve on the third shell-and-tube heat exchanger is connected with an inlet on the upper side of the plate heat exchanger, an outlet on the left side of the plate heat exchanger is connected with an inlet on the right side of the electromagnetic three-way valve, an outlet on the lower side of the electromagnetic three-way valve. The cold water heat dissipation system comprises a cold water tank, a variable-frequency circulating water pump and an air cooler, wherein the outlet of the cold water tank is connected with the inlet of the variable-frequency circulating water pump, the outlet of the variable-frequency circulating water pump is connected with the inlet of the air cooler, and the outlet of the air cooler is connected with the inlet of the lower side of the cold water tank.
And a variable-frequency motor and a frequency converter are arranged in the variable-frequency circulating water pump.
The switch of the first electric ball valve, the first countercurrent electromagnetic valve, the first downstream electromagnetic valve, the second countercurrent electromagnetic valve, the first plate-type electromagnetic valve, the first sleeve electromagnetic valve, the first tube shell electromagnetic valve, the second sleeve electromagnetic valve, the second tube shell electromagnetic valve, the second plate-type electromagnetic valve, the second electric ball valve, the electromagnetic three-way valve, the third sleeve electromagnetic valve, the third tube shell electromagnetic valve and the third plate-type electromagnetic valve is controlled by a plc controller, and the touch screen programmed by the winc is used as an upper computer.
In the novel heat exchanger experiment table, cold water passes through a flow regulating valve under the drive of a cold water pump and then enters a forward-reverse flow conversion electromagnetic valve bridge circuit consisting of four electromagnetic valves through a turbine flowmeter. In the solenoid valve bridge circuit, every two are in one group, and when one group is opened and the other group is closed, the heat exchange of cold water and hot water in the heat exchanger in a concurrent flow or countercurrent mode can be realized. Cold water enters a water-dividing four-way pipe (three inputs and one output) after passing through a forward-reverse flow conversion electromagnetic valve bridge circuit, water is divided into three paths and flows to three heat exchangers, namely a sleeve-type heat exchanger, a shell-and-tube heat exchanger and a plate heat exchanger respectively, an electromagnetic valve is arranged on each path of cold water path of the water-dividing four-way pipe, the electromagnetic valve is controlled to be switched on and switched off, the cold water only flows to the specified heat exchanger in the experimental process, and the type of the heat. Cold water enters the heat exchanger to absorb heat and raise temperature, flows out and then returns to the forward and reverse flow electromagnetic valve bridge circuit through the water collecting four-way pipeline (one input and three outputs), each input passage of the water collecting four-way pipeline is also controlled to be switched on and off by the electromagnetic valve, and finally flows into the cold water tank. Hot water in the hot water loop passes through the hot water flow regulating valve under the drive of the hot water pump and then enters the hot water diversion four-way pipe (one input and three outputs) through the hot water flowmeter, each output passage is provided with an electromagnetic valve for controlling the on-off, the hot water only flows to one heat exchanger in the test process, and the hot water directly flows back to the hot water tank after flowing out of the heat exchanger. The water in the cold water tank dissipates heat in the radiator through the cold water heat dissipation loop, and the variable frequency pump in the cold water heat dissipation loop can be adjusted in real time according to the temperature in the cold water tank, so that the temperature of the water tank is guaranteed to be constant.
In the experiment, the switching of heat exchanger type and flow mode all realizes through P L C direct control solenoid valve, and sensors such as pressure transmitter, flow sensor and thermal resistance gather and concentrate the demonstration with the data in the experiment in real time, have improved the inconvenient problem of experiment operation and data reading greatly.
Compared with the prior art, the invention has the following innovation:
1. the air cooler cooling water system is arranged, the frequency of the water pump is collected and controlled through the water inlet temperature of cold water, the heat dissipation capacity adjustment is realized by changing the water flow, the constant water temperature of the cold water tank is ensured, and the better performance analysis of the heat exchanger can be realized.
2. The starting and stopping of equipment such as a variable frequency pump, a radiator fan, a cold water pump and a hot water pump and the adjustment of a regulating valve are realized through a P L C control module, the temperature, the pressure and the flow of the experiment table can be collected, and the real-time output of experiment data is realized.
3. And a winc is adopted to write a touch screen program, and the electromagnetic valve is quick to respond.
Drawings
Fig. 1 is a structural schematic diagram of a novel heat exchanger comprehensive experiment table.
Wherein: 1-a cold water tank, 2-a cold water pump, 3-a first electric ball valve, 4-a first intelligent turbine flowmeter, 5-a first cut-off valve, 6-a first reverse-flow solenoid valve, 7-a first forward-flow solenoid valve, 8-a second forward-flow solenoid valve, 9-a second reverse-flow solenoid valve, 10-a first plate solenoid valve, 11-a first sleeve solenoid valve, 12-a first tube-in-tube solenoid valve, 13-a second sleeve solenoid valve, 14-a second tube-in-tube solenoid valve, 15-a second plate solenoid valve, 16-a sleeve-type heat exchanger, 17-a shell-and-tube heat exchanger, 18-a plate heat exchanger, 19-a second intelligent turbine flowmeter, 20-a second electric ball valve, 21-a hot water pump, 22-a hot water tank, 23-an electromagnetic three-way valve, 24-a third tube-in-tube solenoid valve, 25-a third solenoid valve, 26-a third plate solenoid valve, 27-a variable frequency circulating water pump, 28-an, 30-a second pressure transmitter, 31-a third pressure transmitter, 32-a fourth pressure transmitter.
In the figure, black solid arrows indicate the cold (hot) water downstream flow direction, and diagonal filled arrows indicate the cold water upstream flow direction.
Detailed Description
To make the objects, features and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In addition, directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", and the like, refer to directions of the drawings only. Accordingly, the directional terminology is used for the purpose of illustration and understanding and is in no way limiting.
As shown in fig. 1, the novel heat exchanger comprehensive experiment table comprises a cold water system, a hot water system and a cold water heat dissipation system.
The cold water system includes: cold water tank (1), cold water pump (2), first electric ball valve (3), first intelligent turbine flowmeter (4), first stop valve (5), first solenoid valve against current (6), first downstream solenoid valve (7), second downstream solenoid valve (8), second solenoid valve against current (9), first plate solenoid valve (10), first sleeve solenoid valve (11), first tube solenoid valve (12), second sleeve solenoid valve (13), second tube solenoid valve (14), second plate solenoid valve (15), double pipe heat exchanger (16), shell and tube heat exchanger (17), plate heat exchanger (18), first pressure transmitter (29), third pressure transmitter (31)
The outlet of a cold water tank (1) is communicated with the inlet of a cold water pump (2), the outlet of the cold water pump (2) is connected with the inlet of a first electric ball valve (3), the outlet of the first electric ball valve (3) is connected with the inlet of a first intelligent turbine flowmeter (4), the outlet of the first intelligent turbine flowmeter (4) is connected with the inlet of a first stop valve (5), the inlet of a third pressure transmitter (31) is connected with the inlet of a first downstream electromagnetic valve (7) on one way, the inlet of a second upstream electromagnetic valve (9) is connected with the other way, the outlet of the first downstream electromagnetic valve (7) is connected with the inlet of a first plate type electromagnetic valve (10) on one way, the inlet of a first sleeve electromagnetic valve (11) is connected with the other way, and the inlet of the other way is connected with a first tube shell electromagnetic valve (12). An outlet of the first plate type electromagnetic valve (10) is connected with a right inlet of the plate type heat exchanger (18), an outlet of the first casing type electromagnetic valve (11) is connected with a left inlet of the casing type heat exchanger (16), and an outlet of the first casing type electromagnetic valve (12) is connected with a right inlet of the casing type heat exchanger (17). The outlet of the first downstream solenoid valve (7) is connected with the inlet of the first upstream solenoid valve (6), one path of the outlet of the first upstream solenoid valve (6) is connected with the inlet of the second downstream solenoid valve (8), the other path of the outlet of the first upstream solenoid valve is connected with the inlet of the first pressure transmitter (29), and the outlet of the first pressure transmitter (29) is connected with the inlet on the upper side of the water tank. The outlet of the second countercurrent electromagnetic valve (9) is connected with the inlet of a second sleeve electromagnetic valve (13), a second shell electromagnetic valve (14) and a second plate electromagnetic valve (15), the left side of the second sleeve electromagnetic valve (13) is connected with the inlet of a double-pipe heat exchanger (16), the right side of the second shell electromagnetic valve (14) is connected with the inlet of a shell heat exchanger (17), and the outlet of the second plate electromagnetic valve (15) is connected with the inlet of the right side of a plate heat exchanger (18). The outlet of the second countercurrent solenoid valve (9) is connected with the inlet of the second downstream solenoid valve (8), one path of the outlet of the second downstream solenoid valve (8) is connected with the inlet of the first countercurrent solenoid valve (6), the other path of the outlet of the second downstream solenoid valve is connected with the inlet of the first pressure transmitter (29), and the outlet of the first pressure transmitter (29) is connected with the inlet on the upper side of the water tank.
The hot water system includes: the system comprises a double-pipe heat exchanger (16), a shell-and-tube heat exchanger (17), a plate heat exchanger (18), a second intelligent turbine flowmeter (19), a second electric ball valve (20), a hot water pump (21), a hot water tank (22), an electromagnetic three-way valve (23), a third sleeve electromagnetic valve (24), a third shell electromagnetic valve (25), a third plate electromagnetic valve (26), a second pressure transmitter (30) and a fourth pressure transmitter (32).
An outlet of a hot water tank (22) is connected with an inlet of a hot water pump (21), an outlet of the hot water pump (21) is connected with an inlet of a second electric ball valve (20), an outlet of the second electric ball valve (20) is connected with an inlet of a second intelligent turbine flowmeter (19), an outlet of the second intelligent turbine flowmeter (19) is connected with an inlet of a second pressure transmitter (30), an outlet of the second pressure transmitter (30) is connected with a third sleeve electromagnetic valve (24), a third sleeve electromagnetic valve (25) and an inlet of a third plate-type electromagnetic valve (26), the third sleeve electromagnetic valve (24) is connected with a left inlet of a sleeve-type heat exchanger (16), a left outlet of the sleeve-type heat exchanger (16) is connected with a left inlet of an electromagnetic three-way valve (23), an outlet of the third sleeve electromagnetic valve (25) is connected with a left inlet of a shell-type heat exchanger (17), an upper side outlet of the shell-type heat exchanger (17), an outlet at the left side of the plate heat exchanger (18) is connected with an inlet at the right side of an electromagnetic three-way valve (23), an outlet at the lower side of the electromagnetic three-way valve (23) is connected with an inlet of a fourth pressure transmitter (32), and an outlet of the fourth pressure transmitter (32) is connected with a hot water tank (22).
The cold water heat dissipation system includes: a cold water tank (1), a variable frequency circulating water pump (27) and an air cooler (28). The outlet of the cold water tank (1) is connected with the inlet of a variable frequency circulating water pump (27), the outlet of the variable frequency circulating water pump (27) is connected with the inlet of an air cooler (28), and the outlet of the air cooler (28) is connected with the inlet at the lower side of the cold water tank (1).
In this example, the variable frequency circulating water pump (27) is internally provided with a variable frequency motor and a variable frequency device.
In this example, the experiment table is provided with an electric box, a plc module is arranged in the electric box and connected with a relay to realize control over various valves, and a touch screen programmed by wincc is used as an upper computer.
The operation of the device is as follows:
1 cold and hot water exchanges heat in the double-pipe heat exchanger, regulation and control are realized through a touch screen at the moment, a cold water pump (2), a first electric ball valve (3), a first stop valve (5), a first countercurrent electromagnetic valve (6), a first downstream electromagnetic valve (7), a second downstream electromagnetic valve (8), a first sleeve electromagnetic valve (11), a second sleeve electromagnetic valve (13), a second intelligent turbine flowmeter (19), a second electric ball valve (20), a hot water pump (21), a third sleeve electromagnetic valve (24) are opened, a first plate type electromagnetic valve (10), a first tube electromagnetic valve (12), a second plate type electromagnetic valve (14), a second plate type electromagnetic valve (15), a third tube electromagnetic valve (25), and a third plate type electromagnetic valve (26) is closed.
Hot water in the hot water tank 22 enters the second electric ball valve 20 through the hot water pump 21 and then flows into the second intelligent turbine flowmeter 19, and then enters the second pressure transmitter 30 after flowing out through the second intelligent turbine flowmeter 19 and then enters the double pipe heat exchanger 16 through the third double pipe electromagnetic valve 24. The cooled hot water enters the fourth pressure transmitter 32 from the upper outlet of the double-pipe heat exchanger 16 through the electromagnetic three-way valve 23 and flows back to the hot water tank 22, and hot water circulation is completed.
The cold water of the sleeve flows downstream: cold water in the cold water tank 1 enters the first electric ball valve 3 through the cold water pump 2, enters the third pressure transmitter 31 through the first stop valve 5, then enters the first downstream electromagnetic valve 7, enters the first sleeve electromagnetic valve 11 after exiting from the first downstream electromagnetic valve 7, and enters the sleeve heat exchanger 16 after exiting from the first sleeve electromagnetic valve 11. (in this case, the cold water and the hot water flow in the same direction in the heat exchanger, so the flow is the cold-hot water concurrent heat exchange). After the temperature of the cold water is raised, the cold water flows through the double-pipe heat exchanger 16, flows through the second sleeve electromagnetic valve 13, enters the second downstream electromagnetic valve 8, flows into the cold water tank from the second downstream electromagnetic valve 8 through the first pressure transmitter 29, and completes the cold water circulation of the double-pipe heat exchanger.
And (3) sleeve cold water countercurrent flow: cold water in the cold water tank 1 enters the first electric ball valve 3 through the cold water pump 2, enters the third pressure transmitter 31 through the first stop valve 5, then enters the second countercurrent electromagnetic valve 9, enters the second sleeve electromagnetic valve 13 after exiting from the second countercurrent electromagnetic valve 9, and enters the sleeve type heat exchanger 16 after exiting from the second sleeve electromagnetic valve 13. (in this case, the flow direction of the cold water and the hot water in the heat exchanger is opposite, so the flow is the cold-hot water countercurrent heat exchange). After the temperature of the cold water is increased, the cold water flows through the first sleeve electromagnetic valve 11 in the sleeve type heat exchanger 16, enters the first countercurrent electromagnetic valve 6, flows into the cold water tank 1 from the first countercurrent electromagnetic valve 6 through the first pressure transmitter 29, and the cold water circulation of the sleeve type heat exchanger is completed.
2 cold and hot water exchanges heat in the shell-and-tube heat exchanger, regulation and control are realized through a touch screen at the moment, the cold water pump 2, the first electric ball valve 3, the first stop valve 5, the first downstream electromagnetic valve 7, the second downstream electromagnetic valve 8, the first shell-and-tube electromagnetic valve 12, the second shell-and-tube electromagnetic valve 14, the third shell-and-tube electromagnetic valve 25, the second intelligent turbine flowmeter 19, the second electric ball valve 20 and the hot water pump 21 are opened, and the first plate type electromagnetic valve 10, the second plate type electromagnetic valve 15, the third plate type electromagnetic valve 26, the first shell-and-tube electromagnetic valve 11, the second shell-and-tube electromagnetic valve 13 and the third shell-and.
Hot water in the hot water tank 22 enters the second electric ball valve 20 through the hot water pump 21 and then flows into the second intelligent turbine flowmeter 19, and then enters the second pressure transmitter 30 after flowing out through the second intelligent turbine flowmeter 19 and then enters the shell-and-tube heat exchanger 17 through the third shell-and-tube electromagnetic valve 25. The cooled hot water enters the fourth pressure transmitter 32 from the upper outlet of the double pipe heat exchanger 16 through the electromagnetic three-way valve 23 and then flows back to the hot water tank 22, and hot water circulation is completed.
Pipe shell cold water downstream: cold water in the cold water tank 1 enters the first electric ball valve 3 through the cold water pump 2, enters the third pressure transmitter 31 through the first stop valve 5, then enters the first downstream electromagnetic valve 7, enters the first tube shell electromagnetic valve 12 after exiting from the first downstream electromagnetic valve 7, and enters the shell-and-tube heat exchanger 17 after exiting from the first tube shell electromagnetic valve 12. (in this case, the cold water and the hot water flow in the same direction in the heat exchanger, so the flow is the cold-hot water concurrent heat exchange). After the temperature of the cold water is increased, the cold water flows through the second shell-and-tube electromagnetic valve 14 through the shell-and-tube heat exchanger 17, enters the second downstream electromagnetic valve 8, flows into the cold water tank through the first pressure transmitter 29 from the second downstream electromagnetic valve 8, and the cold water circulation of the double-tube heat exchanger is completed.
The cold water of the pipe shell flows reversely: cold water in the cold water tank 1 enters the first electric ball valve 3 through the cold water pump 2, enters the third pressure transmitter 31 through the first stop valve 5, then enters the second countercurrent electromagnetic valve 9, enters the second shell-and-tube electromagnetic valve 14 after exiting from the second countercurrent electromagnetic valve 9, and enters the shell-and-tube heat exchanger 17 after exiting from the second shell-and-tube electromagnetic valve 14. (in this case, the flow direction of the cold water and the hot water in the heat exchanger is opposite, so the flow is the cold-hot water countercurrent heat exchange). After the temperature of the cold water is increased, the cold water flows through the first shell-and-tube electromagnetic valve 12 in the shell-and-tube heat exchanger 17, enters the first countercurrent electromagnetic valve 6, flows into the cold water tank 1 from the first countercurrent electromagnetic valve 6 through the first pressure transmitter 29, and completes the cold water circulation of the shell-and-tube heat exchanger.
3 cold and hot water exchanges heat in the plate heat exchanger, regulation and control are realized through a touch screen at the moment, the cold water pump 2, the first electric ball valve 3, the first stop valve 5, the first downstream electromagnetic valve 7, the second downstream electromagnetic valve 8, the second intelligent turbine flowmeter 19, the second electric ball valve 20, the hot water pump 21, the first plate electromagnetic valve 10, the second plate electromagnetic valve 15 and the third plate electromagnetic valve 26 are opened, and the first sleeve electromagnetic valve 11, the second sleeve electromagnetic valve 13, the third sleeve electromagnetic valve 24, the first tube electromagnetic valve 12, the second tube electromagnetic valve 14 and the third tube electromagnetic valve 25 are closed.
Hot water in the hot water tank 22 enters the second electric ball valve 20 through the hot water pump 21 and then flows into the second intelligent turbine flowmeter 19, and then flows out of the second intelligent turbine flowmeter 19 and enters the second pressure transmitter 30 and then enters the plate heat exchanger 18 through the third plate-type electromagnetic valve 26. The cooled hot water flows from the upper outlet of the plate heat exchanger 18 through the electromagnetic three-way valve 23 and the fourth pressure transmitter 32 and then flows back to the hot water tank 22, and hot water circulation is completed.
Plate-type cold water forward flow: cold water in the cold water tank 1 enters the first electric ball valve 3 through the cold water pump 2, enters the third pressure transmitter 31 through the first stop valve 5, then enters the first downstream electromagnetic valve 7, enters the first plate-type electromagnetic valve 10 after exiting from the first downstream electromagnetic valve 7, and enters the plate-type heat exchanger 18 after exiting from the first plate-type electromagnetic valve 10. (in this case, the cold water and the hot water flow in the same direction in the heat exchanger, so the flow is the cold-hot water concurrent heat exchange). After the temperature of the cold water is increased, the cold water flows through the plate heat exchanger 18, the second plate type electromagnetic valve 15, enters the second downstream electromagnetic valve 8, flows into the cold water tank from the second downstream electromagnetic valve 8 through the first pressure transmitter 29, and cold water circulation of the double-pipe heat exchanger is completed.
Plate-type cold water countercurrent: cold water in the cold water tank 1 enters the first electric ball valve 3 through the cold water pump 2, enters the third pressure transmitter 31 through the first stop valve 5, then enters the second countercurrent electromagnetic valve 9, enters the second plate-type electromagnetic valve 15 after coming out of the second countercurrent electromagnetic valve 9, and enters the plate-type heat exchanger 18 after flowing out of the second plate-type electromagnetic valve 15. (in this case, the flow direction of the cold water and the hot water in the heat exchanger is opposite, so the flow is the cold-hot water countercurrent heat exchange). After the temperature of the cold water is increased, the cold water flows through the first plate-type electromagnetic valve 10 in the plate-type heat exchanger 18 and enters the first countercurrent electromagnetic valve 6, and flows into the cold water tank 1 from the first countercurrent electromagnetic valve 6 through the first pressure transmitter 29, so that cold water circulation of the double-pipe heat exchanger is completed.
4. Operation of air cooler heat dissipation system
Under the state that the valve is opened, the control is realized through the touch screen, the variable frequency circulating water pump (27) is opened, the heated cold water enters the air cooler 28 through the variable frequency circulating water pump 27, and flows back to the cold water tank after being cooled. The heat dissipation system can be opened in the whole process when the heat exchanger exchanges heat.
The above description is only exemplary of the invention, and should not be taken as limiting the invention, as modifications, equivalents and the like that are within the spirit and scope of the invention are intended to be included therein.
Claims (3)
1. The utility model provides a novel heat exchanger comprehensive experiment platform, includes cooling water system, hot water system and cold water cooling system three, characterized by, cooling water system includes: the device comprises a cold water tank (1), a cold water pump (2), a first electric ball valve (3), a first intelligent turbine flowmeter (4), a first stop valve (5), a first countercurrent electromagnetic valve (6), a first downstream electromagnetic valve (7), a second downstream electromagnetic valve (8), a second countercurrent electromagnetic valve (9), a first plate-type electromagnetic valve (10), a first sleeve electromagnetic valve (11), a first shell electromagnetic valve (12), a second sleeve electromagnetic valve (13), a second shell electromagnetic valve (14), a second plate-type electromagnetic valve (15), a sleeve-type heat exchanger (16), a shell-and-tube heat exchanger (17), a plate-type heat exchanger (18), a first pressure transmitter (29) and a third pressure transmitter (31), wherein the outlet of the cold water tank (1) is communicated with the inlet of the cold water pump (2), the outlet of the cold water pump (2) is connected with the inlet of the first electric ball valve (3), the outlet of the first electric ball valve (3) is connected with the inlet of the first, the outlet of the first intelligent turbine flowmeter (4) is connected with the inlet of a first stop valve (5), the first stop valve (5) is connected with the inlet of a third pressure transmitter (31), one path of the outlet of the third pressure transmitter (31) is connected with the inlet of a first downstream electromagnetic valve (7), the other path of the outlet of the third pressure transmitter is connected with the inlet of a second countercurrent electromagnetic valve (9), one path of the outlet of the first downstream electromagnetic valve (7) is connected with the inlet of a first plate type electromagnetic valve (10), the other path of the outlet of the first downstream electromagnetic valve is connected with the inlet of a first sleeve type electromagnetic valve (11), the other path of the outlet of the first sleeve type electromagnetic valve (12) is also connected with the inlet of a first sleeve type electromagnetic valve (12), the outlet of the first plate type electromagnetic valve (10) is connected with the right side inlet of a plate type heat exchanger (18), the outlet of the first sleeve type electromagnetic valve (11) is connected with the left side inlet of a sleeve, one path of an outlet of the first countercurrent electromagnetic valve (6) is connected with an inlet of a second downstream electromagnetic valve (8), the other path of the outlet of the first countercurrent electromagnetic valve (6) is connected with an inlet of a first pressure transmitter (29), an outlet of the first pressure transmitter (29) is connected with an inlet at the upper side of a water tank, an outlet of the second countercurrent electromagnetic valve (9) is connected with a second sleeve electromagnetic valve (13), a second shell electromagnetic valve (14) and an inlet of a second plate electromagnetic valve (15), an outlet of the second sleeve electromagnetic valve (13) is connected with a left inlet of a shell heat exchanger (16), an outlet of the second shell electromagnetic valve (14) is connected with a right inlet of the shell heat exchanger (17), an outlet of the second plate electromagnetic valve (15) is connected with a right inlet of a plate heat exchanger (18), an outlet of the second countercurrent electromagnetic valve (9) is connected with an inlet of the second downstream electromagnetic valve (8), one path of an outlet of the second, the first pressure transmitter (29) export connects the import of cold water tank (1) upside, hot water system includes: double-pipe heat exchanger (16), shell-and-tube heat exchanger (17), plate heat exchanger (18), second intelligence turbine flowmeter (19), second electric ball valve (20), hot-water pump (21), hot-water tank (22), electromagnetism three-way valve (23), third sleeve solenoid valve (24), third shell solenoid valve (25), third plate solenoid valve (26), second pressure transmitter (30), fourth pressure transmitter (32), hot-water tank (22) exit linkage hot-water pump (21) import, hot-water pump (21) exit linkage second electric ball valve (20) import, second electric ball valve (20) exit linkage second intelligence turbine flowmeter (19) import, second intelligence turbine flowmeter (19) exit linkage second pressure transmitter (30) entry, second pressure transmitter (30) exit linkage third sleeve solenoid valve (24), third shell solenoid valve (25), Third plate solenoid valve (26) import, import on third sleeve solenoid valve (24) double pipe heat exchanger (16) left side, the export connection electromagnetism three-way valve (23) left side import on double pipe heat exchanger (16) left side, import on third shell solenoid valve (25) export connection shell type heat exchanger (17) left side, the import of shell type heat exchanger (17) upside exit linkage electromagnetism three-way valve (23), the import of third shell solenoid valve (25) connection plate heat exchanger (18) upside, the import of plate heat exchanger (18) left side exit connection electromagnetism three-way valve (23) right side, the import of electromagnetism three-way valve (23) downside exit connection fourth pressure transmitter (32), fourth pressure transmitter (32) export connects hot water tank (22), cold water cooling system includes: cold water storage cistern (1), frequency conversion circulating water pump (27), air cooler (28), cold water storage cistern (1) exit linkage frequency conversion circulating water pump (27) import, frequency conversion circulating water pump (27) exit linkage air cooler (28) import, air cooler (28) export connects cold water storage cistern (1) downside import.
2. The comprehensive experiment table of the novel heat exchanger as claimed in claim 1, wherein a variable frequency motor and a frequency converter are arranged in the variable frequency circulating water pump (27).
3. The novel heat exchanger comprehensive experiment table as claimed in claim 1, wherein the first electric ball valve (3), the first countercurrent electromagnetic valve (6), the first cocurrent electromagnetic valve (7), the second cocurrent electromagnetic valve (8), the second countercurrent electromagnetic valve (9), the first plate type electromagnetic valve (10), the first casing electromagnetic valve (11), the first casing electromagnetic valve (12), the second casing electromagnetic valve (13), the second casing electromagnetic valve (14), the second plate type electromagnetic valve (15), the second electric ball valve (20), the electromagnetic three-way valve (23), the third casing electromagnetic valve (24), the third casing electromagnetic valve (25), and the third plate type electromagnetic valve (26) are controlled by a plc controller, and a touch screen programmed by a winc is used as an upper computer.
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| CN201920969549.XU CN210981810U (en) | 2019-06-25 | 2019-06-25 | Novel heat exchanger comprehensive experiment table |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114779725A (en) * | 2022-04-25 | 2022-07-22 | 新疆大学 | Comprehensive experiment system for open process equipment and control engineering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114779725A (en) * | 2022-04-25 | 2022-07-22 | 新疆大学 | Comprehensive experiment system for open process equipment and control engineering |
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