Simple thermal fluid distribution and coupling heat exchanger test system

Abstract

The utility model discloses a simple hot fluid distribution and coupling heat exchanger testing system, which belongs to the technical field of heat exchanger testing and comprises a coupling heat exchanger, and all heat inlets of the coupling heat exchanger are connected with a heat source pipeline. The heat source pipeline is provided with a heating device and a first flowmeter; one end of the shunting pipeline is connected between the flowmeter and the heating device; the shunting pipeline is provided with a regulating valve and a second flowmeter; a heat outlet of each coupling heat exchanger is connected with a heat discharge pipeline, each heat discharge pipeline is provided with a flow meter and a regulating valve, and coolers are arranged between all the heat outlets and the regulating valves on the heat discharge pipelines. Different temperatures of hot fluid at different heat inlets are realized through one heating device; a flow meter and a regulating valve are arranged on each heat exhaust pipeline, so that the distribution of the hot fluid in the coupling heat exchanger is regulated; and a cooler is arranged between the heat outlet and the regulating valve, so that the regulating valve and the flow meter are prevented from being burnt by the hot fluid after heat exchange.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger test technical field, concretely relates to a simple and easy hot fluid distribution and coupling heat exchanger test system. BACKGROUND

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] At present, the heat transfer effect, resistance loss and other thermal fluid comprehensive performance of heat exchanger are detected and verified by using heat exchanger test system.For example, the patent CN221325917U discloses a high-temperature heat exchanger test system, which provides cold source fluid and heat source fluid for the heat exchanger, and sets detector on the corresponding pipeline to measure the heat transfer limit of the heat exchanger to be tested, so as to test the heat transfer effect, resistance loss and other thermal fluid comprehensive performance of the high-temperature heat exchanger.

[0004] The above-mentioned scheme can only test the conventional heat exchanger, and the conventional heat exchanger often only has hot side and cold side connection inlet, while the coupling heat exchanger has two or more hot fluids and two or more cold fluids.For the flow control and pressure detection of multiple cold fluids, it is relatively easy to realize in engineering, and the flow distribution control of hot fluid is more complex than that of cold fluid.This is because the preparation of hot fluid is often associated with heating equipment, and for the same multi-path hot fluid scheme, a single heater is matched with multiple heat exchangers, or multiple heaters are matched with multiple heat exchangers.But increasing the heating device and increasing the cost of heat exchanger are relatively high, and the cost of valve group matching high-temperature fluid distribution is high and the reliability is poor. UTILITY MODEL CONTENT

[0005] In view of the above problems, the utility model provides a simple and easy hot fluid distribution and coupling heat exchanger test system, which only needs a heating device and can realize different hot fluid temperatures of different hot inlets;By setting a flow meter and an adjusting valve on each hot discharge pipeline, the distribution of hot fluid in the coupling heat exchanger is adjusted;Between the hot outlet and the adjusting valve, a cooler is arranged to prevent the adjusting valve and the flow meter from being damaged by the hot fluid after heat exchange.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A simple and easy hot fluid distribution and coupling heat exchanger test system, comprising a coupling heat exchanger, a first hot inlet and a second hot inlet of the coupling heat exchanger, which are connected with a heat source pipeline;

[0008] A first fan is arranged at the starting point of the heat source pipeline, a heating device is arranged between the first fan and the coupling heat exchanger, and a first flow meter is arranged between the first fan and the heating device; one end of a shunt pipeline is connected between the first flow meter and the heating device, and the other end is connected to a second heat inlet; a first adjusting valve and a second flow meter are arranged on the shunt pipeline;

[0009] The first heat outlet of the coupling heat exchanger is connected to a first heat discharge pipeline, and the second heat outlet is connected to a second heat discharge pipeline; a second adjusting valve is arranged on the first heat discharge pipeline, and a third adjusting valve is arranged on the second heat discharge pipeline.

[0010] Preferably, a fifth flow meter is arranged on the first heat discharge pipeline, the fifth flow meter is located on the side, away from the first heat outlet, of the second adjusting valve, and a first cooler is arranged between the first heat outlet and the second adjusting valve.

[0011] Preferably, a sixth flow meter is arranged on the second heat discharge pipeline, the sixth flow meter is located on the side, away from the second heat outlet, of the third adjusting valve, and a second cooler is arranged between the second heat outlet and the third adjusting valve.

[0012] Preferably, a seventh pressure sensor and a seventh temperature sensor are arranged between the second heat outlet and the second cooler; and a sixth pressure sensor and a sixth temperature sensor are arranged between the first heat outlet and the first cooler.

[0013] Preferably, a first temperature meter and a first pressure meter are arranged between the heating device and the coupling heat exchanger.

[0014] Preferably, the coupling heat exchanger further comprises a first cold inlet, the first cold inlet is connected to a first cold source pipeline, and a second fan is arranged at the starting point of the first cold source pipeline; a third flow meter is arranged between the second fan and the first cold inlet.

[0015] Preferably, a second pressure sensor and a second temperature sensor are arranged between the third flow meter and the first cold inlet.

[0016] Preferably, the coupling heat exchanger further comprises a second cold inlet, the second cold inlet is connected to a second cold source pipeline, a water tank is arranged at the starting point of the second cold source pipeline, a water pump is arranged between the water tank and the second cold inlet, and a fourth flow meter is arranged between the water pump and the second cold inlet.

[0017] Preferably, a third pressure sensor and a third temperature sensor are arranged between the water pump and the fourth flow meter.

[0018] Preferably, the coupling heat exchanger further comprises a first cold outlet and a second cold outlet, both cold outlets are respectively connected to a cold discharge pipeline, and a pressure sensor and a temperature sensor are arranged on each cold discharge pipeline.

[0019] Compared with the prior art, the utility model has the advantages and positive effects that:

[0020] The utility model discloses a set up flowmeter and a heating device on the heat source pipeline, and all heat inlets including the first heat inlet of the heat source pipeline are connected with the coupling heat exchanger, a plurality of shunt pipelines are arranged between the flowmeter and the heating device, and adjusting valves and flowmeters are arranged on the shunt pipelines, so that the plurality of shunt pipelines are connected with all heat inlets except the first heat inlet, the opening and closing degree of the adjusting valve is controlled, the temperature of the heat fluid entering the heat inlet can be adjusted, and no extra heating device needs to be added.

[0021] The utility model discloses a set up flowmeter and a heating device on the heat source pipeline, and all heat inlets including the first heat inlet of the heat source pipeline are connected with the coupling heat exchanger, a plurality of shunt pipelines are arranged between the flowmeter and the heating device, and adjusting valves and flowmeters are arranged on the shunt pipelines, so that the plurality of shunt pipelines are connected with all heat inlets except the first heat inlet, the opening and closing degree of the adjusting valve is controlled, the temperature of the heat fluid entering the heat inlet can be adjusted, and no extra heating device needs to be added.

[0022] The utility model discloses a set up flowmeter and a heating device on the heat source pipeline, and all heat inlets including the first heat inlet of the heat source pipeline are connected with the coupling heat exchanger, a plurality of shunt pipelines are arranged between the flowmeter and the heating device, and adjusting valves and flowmeters are arranged on the shunt pipelines, so that the plurality of shunt pipelines are connected with all heat inlets except the first heat inlet, the opening and closing degree of the adjusting valve is controlled, the temperature of the heat fluid entering the heat inlet can be adjusted, and no extra heating device needs to be added. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings accompanying the specification provide further understanding of the utility model, and the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0024] Figure 1 It is the test system schematic drawing of the utility model embodiment;

[0025] Figure 2 It is the working step schematic drawing of the test system of the utility model embodiment;

[0026] In the drawing:

[0027] 1, coupling heat exchanger; 11, first heat inlet; 12, second heat inlet; 13, first heat outlet; 14, second heat outlet; 15, first cold inlet; 16, second cold inlet; 17, first cold outlet; 18, second cold outlet; 2, heat source pipeline; 21, first fan; 22, heating device; 23, first flowmeter; 3, shunt pipeline; 31, first adjusting valve; 32, second flowmeter; 4, first cold source pipeline; 41, second fan; 42, third flowmeter; 5, second cold source pipeline; 51, water tank; 52, water pump; 53, fourth flowmeter; 6, first cold exhaust pipeline; 7, second cold exhaust pipeline; 8, first heat exhaust pipeline; 81, first cooler; 82, second adjusting valve; 83, fifth flowmeter; 9, second heat exhaust pipeline; 91, second cooler; 92, third adjusting valve; 93, sixth flowmeter. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed description is exemplary and is intended to further explain the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0029] The present application will be described in detail below with reference to the accompanying drawings. The simple hot fluid distribution and coupling heat exchanger test system disclosed in the present embodiment, as shown in Figure 1 The coupling heat exchanger 1 includes a first hot inlet 11 and a second hot inlet 12 for the hot fluid to enter the coupling heat exchanger 1. Correspondingly, it also includes a first hot outlet 13 and a second hot outlet 14 for the heat-exchanged hot fluid to flow out of the coupling heat exchanger 1. It also includes a first cold inlet 15 and a second cold inlet 16 for the first cold fluid and the second cold fluid to enter the coupling heat exchanger 1. Correspondingly, it also includes a first cold outlet 17 and a second cold outlet 18 for the heat-exchanged first cold fluid and second cold fluid to flow out of the coupling heat exchanger 1.

[0030] In the present embodiment, the hot fluid is air. As shown in Figure 1 The first hot inlet 11 and the second hot inlet 12 of the coupling heat exchanger 1 are connected to a heat source pipeline 2. The heat source pipeline 2 has a first fan 21 at its starting point for blowing air into the heat source pipeline 2. The heat source pipeline 2 also has a heating device 22, which in the present embodiment is an electric heater. The heating device 22 is used to heat the air blown into the heat source pipeline 2. A first flow meter 23 is provided between the first fan 21 and the heating device 22 for monitoring the amount of air entering the heat source pipeline 2. The air heated by the heating device 22 is sent to the first hot inlet 11 and the second hot inlet 12, respectively. A first thermometer and a first pressure gauge are also provided between the heating device 22 and the coupling heat exchanger 1 for monitoring the temperature and pressure of the air after the heating device 22.

[0031] It can be understood that the hot fluid can also be hot water, high-temperature steam, or other high-temperature hot fluids. The heating device can be replaced by other heating equipment, such as a burner, a fuel cell device capable of generating heat, a magnetic fluid heating device, etc.

[0032] As shown in Figure 1 A shunt pipeline 3 is also provided between the first flow meter 23 and the heating device 22. One end of the shunt pipeline 3 is arranged between the first flow meter 23 and the heating device 22, and the other end is connected to the second hot inlet 12. The shunt pipeline 3 is provided with a first regulating valve 31 and a second flow meter 32. The first regulating valve 31 is used to control the opening and closing of the shunt pipeline 3 or to control the flow rate in the shunt pipeline 3. The second flow meter 32 is used to monitor the flow rate of the shunt pipeline 3.

[0033] It can be understood that the embodiment can adjust the temperature of the air entering the first and second hot inlets according to requirements; specifically, the air temperature of the second hot inlet can be adjusted by the first adjusting valve, and opening the first adjusting valve can mix the hot air of the heat source pipeline with the air at normal temperature, so that the air temperature entering the second hot inlet is different from the air temperature entering the first hot inlet; if there is no adjustment, the temperature of the heat fluid entering the coupling heat exchanger is consistent. It can also be understood that in the embodiment, the temperature of the heat fluid is mainly affected by the power of the electric heater.

[0034] In the embodiment, the first cold fluid is air, as shown in Figure 1 The first cold inlet 15 is connected to the first cold source pipeline 4, and the second fan 41 is arranged at the starting point of the first cold source pipeline 4, which is used to blow air into the first cold source pipeline and then into the coupling heat exchanger through the first cold inlet 15. Between the second fan 41 and the first cold inlet 15, a third flow meter 42, a second pressure sensor and a second temperature sensor are arranged in sequence to monitor the air temperature, pressure and flow rate of the first cold source pipeline entering the coupling heat exchanger. After the normal temperature air is pressurized by the second fan and the flow rate is controlled, it reaches the first cold inlet through the third flow meter, the second temperature meter and the second pressure meter to provide cooling air for the coupling heat exchanger.

[0035] In the embodiment, the second cold fluid is water, as shown in Figure 1 The second cold inlet 16 is connected to the second cold source pipeline 5, and the water tank 51 is arranged at the starting point of the second cold source pipeline 5. A water pump 52 is arranged on the second cold source pipeline 5 to transport the water in the water tank 51 to the second cold inlet 16. A fourth flow meter 53 is arranged between the water pump and the second cold inlet 16 to monitor the flow rate of the water entering the coupling heat exchanger. A third pressure sensor and a third temperature sensor are arranged between the water pump and the fourth flow meter to monitor the temperature and pressure of the water entering the coupling heat exchanger. After the water in the water tank is pressurized by the water pump and the flow rate is controlled, it reaches the second cold inlet through the third temperature meter, the third pressure meter and the fourth flow meter to provide cooling water for the coupling heat exchanger.

[0036] As shown in Figure 1 The first cold outlet 17 is connected to the first cold discharge pipeline 6, and a fourth pressure sensor and a fourth temperature sensor are arranged on the first cold discharge pipeline 6 to monitor the temperature and pressure of the first cold fluid discharged from the coupling heat exchanger. The second cold outlet 18 is connected to the second cold discharge pipeline 7, and a fifth pressure sensor and a fifth temperature sensor are arranged on the second cold discharge pipeline 7 to monitor the temperature and pressure of the second cold fluid discharged from the coupling heat exchanger.

[0037] As shown in Figure 1As shown, the first hot outlet 13 is connected to the first hot exhaust pipe 8. Starting from the first hot outlet, a sixth pressure sensor, a sixth temperature sensor, a first cooler 81, a second regulating valve 82, and a fifth flow meter 83 are sequentially installed. The sixth pressure sensor and the sixth temperature sensor are used to monitor the temperature and pressure of the hot fluid exiting the coupled heat exchanger. The first cooler 81 is used to cool the hot fluid whose temperature and pressure have been monitored, preventing it from overheating and damaging the subsequent second regulating valve 82 and fifth flow meter 83. The second regulating valve 82 is used to regulate the opening and closing of the first hot exhaust pipe 8 or the flow rate of the first hot exhaust pipe 8, while the fifth flow meter 83 is used to monitor the flow rate within the first hot exhaust pipe 8.

[0038] Typically, the temperature of the hot fluid (air) ranges from 100 to 900℃, and the temperature after heat exchange in the coupling heat exchanger depends on the exchanger's capacity. However, the operating temperature of conventional flow meters and control valves is ≤200℃, ≤150℃, or ≤100℃, etc. To prevent damage to the flow meter and control valve from the hot fluid at the first heat outlet, a cooler is installed between the coupling heat exchanger and the second control valve to lower the temperature of the hot fluid. The cooling medium of the cooler can be matched according to actual conditions, including: liquid water, air, and organic solvents such as butane and Freon.

[0039] like Figure 1 As shown, the second heat outlet 14 is connected to the second heat exhaust pipe 9. Starting from the second heat outlet, a seventh pressure sensor, a seventh temperature sensor, a second cooler 91, a third regulating valve 92, and a sixth flow meter 93 are sequentially installed. The seventh pressure sensor and the seventh temperature sensor are used to monitor the temperature and pressure of the hot fluid exiting the coupled heat exchanger. The second cooler 91 is used to cool the hot fluid whose temperature and pressure have been monitored, preventing it from overheating and damaging the subsequent third regulating valve 92 and sixth flow meter 93. The third regulating valve 92 is used to regulate the opening and closing of the second heat exhaust pipe 9 or the flow rate of the second heat exhaust pipe 9, while the sixth flow meter 93 is used to monitor the flow rate within the second heat exhaust pipe 9.

[0040] In this embodiment, the air flow rates entering the first and second hot inlets are controlled and regulated by the second and third regulating valves to achieve the distribution of hot fluids. Combined with the flow rate regulation of the first and second cold fluids, the heat exchange performance indicators of the coupled heat exchanger are measured.

[0041] like Figure 2 As shown, the specific steps for measuring the heat transfer performance indicators and heat fluid distribution of the coupled heat exchanger using the test system of this embodiment are as follows:

[0042] S1. Turn on the second fan and water pump, and set the flow rate to be greater than the flow rate of the coupling heat exchanger under test.

[0043] S2, open the first fan, and set the total flow of the heat transfer fluid coupled to the heat exchanger, so as to adjust the first fan speed according to the first flow meter;

[0044] S3, according to the readings of the fifth flow meter and the sixth flow meter, adjust the opening degree of the second regulating valve and the third regulating valve, so as to realize the initial distribution of the heat fluid;

[0045] S4, start the heating device, keep the first regulating valve closed, and the heat fluid temperature of the first heat inlet and the second heat inlet is consistent;

[0046] S5, according to the difference between the temperature of the first heat outlet and the second heat outlet and the temperature of the flow meter, adjust the flow of the cooling fluid of the first cooler and the second cooler, so that the temperature of the heat fluid after heat exchange is lower than the temperature of the flow meter and the second regulating valve and the third regulating valve;

[0047] S6-1, when the heat fluid temperature of the first heat inlet and the second heat inlet is required to be consistent, keep the first regulating valve closed, and according to the readings of the fifth flow meter and the sixth flow meter, adjust the opening degree of the second regulating valve and the third regulating valve, so as to realize the final distribution of the heat fluid;

[0048] S6-2, when the heat fluid temperature of the first heat inlet and the second heat inlet is required to be inconsistent, according to the readings of the first flow meter, the fifth flow meter and the sixth flow meter, adjust the opening degree of the second regulating valve and the third regulating valve, so as to realize the final distribution of the heat fluid;

[0049] S7, gradually reduce the delivery flow of the second fan and the water pump, and approach the flow of the coupling heat exchanger under the working condition to be measured;

[0050] S8, after stable operation, record the values of each sensor to obtain the test results;

[0051] S9, after the test is completed, close the heating device and the first regulating valve, keep the first fan, the second fan, the water pump, the first cooler and the second cooler running until the coupling heat exchanger and the components in the system are cooled to a safe temperature.

[0052] The utility model adopts a first regulating valve and a heating device, can provide heat fluid of same or different temperature for the coupling heat exchanger, and through the readings of the fifth flow meter and the sixth flow meter, the opening degree of the second regulating valve and the third regulating valve can be controlled, and the distribution of the heat fluid in the coupling heat exchanger can be adjusted.

[0053] It can be understood that when the coupling heat exchanger has three or more heat fluid, the scheme is similar to the embodiment, for example, a heating device is still arranged on the heat source pipeline 2, the heat source pipeline is connected with multiple heat inlets of the coupling heat exchanger, multiple shunt pipelines are arranged between the heating device and the first fan, each shunt pipeline is connected with a heat inlet, an adjusting valve and a flow meter are arranged on each shunt pipeline; the rest of the pipelines are not changed, the number is consistent with the number of the heat inlets, and the number of the shunt pipelines is one less than the number of the heat inlets.

[0054] Although the specific embodiments of the utility model are described above with reference to the drawings, it is not a limitation on the protection scope of the utility model, and the skilled in the art should understand that various modifications or deformations made by the skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A simple hot fluid distribution and coupled heat exchanger test system, characterized by, The coupling heat exchanger comprises a first heat inlet and a second heat inlet, both of which are connected with a heat source pipeline; A first fan is arranged at the starting point of the heat source pipeline, a heating device is arranged between the first fan and the coupling heat exchanger, and a first flow meter is arranged between the first fan and the heating device; One end of the shunt pipeline is connected between the first flow meter and the heating device, and the other end is connected to the second heat inlet; A first regulating valve and a second flow meter are arranged on the shunt pipeline; The first heat outlet of the coupling heat exchanger is connected with a first heat discharge pipeline, and the second heat outlet is connected with a second heat discharge pipeline; a second regulating valve is arranged on the first heat discharge pipeline, and a third regulating valve is arranged on the second heat discharge pipeline.

2. A simple test system for a heat transfer exchanger of the type comprising a heat transfer fluid circuit, a heat exchanger and a heat transfer fluid coupling device, as claimed in claim 1, characterized in that A fifth flow meter is arranged on the first heat discharge pipeline, the fifth flow meter is located on the side of the second regulating valve away from the first heat outlet, and a first cooler is arranged between the first heat outlet and the second regulating valve.

3. A simple test system for a heat transfer exchanger of the type comprising a heat transfer fluid circuit, a heat exchanger and a heat transfer fluid coupling device, as claimed in claim 1, characterized in that, A sixth flow meter is arranged on the second heat discharge pipeline, the sixth flow meter is located on the side of the third regulating valve away from the second heat outlet, and a second cooler is arranged between the second heat outlet and the third regulating valve.

4. A simple test system for a heat transfer exchanger of the type comprising a heat transfer fluid circuit, a heat exchanger and a heat transfer fluid coupling device, as claimed in claim 3, characterized in that A seventh pressure sensor and a seventh temperature sensor are arranged between the second heat outlet and the second cooler; a sixth pressure sensor and a sixth temperature sensor are arranged between the first heat outlet and the first cooler.

5. A simple test system for a heat transfer exchanger of the type comprising a heat transfer fluid circuit, a heat exchanger and a heat transfer fluid coupling device, as claimed in claim 1, characterized in that, A first temperature meter and a first pressure meter are arranged between the heating device and the coupling heat exchanger.

6. The simplified heat fluid distribution and coupling heat exchanger test system as described in claim 1, characterized in that, The coupling heat exchanger further comprises a first cold inlet connected with a first cold source pipeline, and a second fan is arranged at the starting point of the first cold source pipeline; a third flow meter is arranged between the second fan and the first cold inlet.

7. A simple test system for a heat transfer exchanger of the type comprising a heat transfer fluid circuit, a heat exchanger and a heat transfer fluid coupling, as claimed in claim 6, characterized in that, A second pressure sensor and a second temperature sensor are arranged between the third flow meter and the first cold inlet.

8. A simple heat transfer fluid distribution and coupling heat exchanger test system as set forth in claim 1, wherein, The coupling heat exchanger further comprises a second cold inlet connected with a second cold source pipeline, a water tank is arranged at the starting point of the second cold source pipeline; a water pump is arranged between the water tank and the second cold inlet, and a fourth flow meter is arranged between the water pump and the second cold inlet.

9. A simple test system for a heat transfer exchanger of the type comprising a heat transfer fluid circuit, a heat exchanger and a heat transfer fluid coupling, as claimed in claim 8, characterized in that, A third pressure sensor and a third temperature sensor are arranged between the water pump and the fourth flow meter.

10. The simplified heat fluid distribution and coupling heat exchanger test system as described in claim 1, characterized in that, The coupling heat exchanger further comprises a first cold outlet and a second cold outlet, both of which are connected with a cold discharge pipeline, and a pressure sensor and a temperature sensor are arranged on each cold discharge pipeline.

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