CN218444498U - Heat load device for testing heat exchange coefficient of plate heat exchanger - Google Patents
Heat load device for testing heat exchange coefficient of plate heat exchanger Download PDFInfo
- Publication number
- CN218444498U CN218444498U CN202222695184.0U CN202222695184U CN218444498U CN 218444498 U CN218444498 U CN 218444498U CN 202222695184 U CN202222695184 U CN 202222695184U CN 218444498 U CN218444498 U CN 218444498U
- Authority
- CN
- China
- Prior art keywords
- circulation pipeline
- heat
- heat exchanger
- internal circulation
- external circulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a test plate heat exchanger heat transfer coefficient's heat loading device, include: the system comprises a heat production device, an internal circulation pipeline system, an external circulation pipeline system and a heat dissipation device; the heat production device, the internal circulation pipeline system, the plate heat exchanger to be tested, the external circulation pipeline system and the heat dissipation device are sequentially connected; the plate heat exchanger to be tested is provided with two hot side interfaces and two cold side interfaces; the internal circulation pipeline system is connected into two hot side interfaces of the plate heat exchanger to be tested, and the external circulation pipeline system is connected into two cold side interfaces of the plate heat exchanger to be tested. The utility model discloses can simulate the on-spot use operating mode of engineering and test plate heat exchanger's heat transfer performance before dispatching from the factory, ensure that its heat transfer ability satisfies the design demand.
Description
Technical Field
The utility model relates to a converter test technical field, more specifically the heat loading device who relates to a test plate heat exchanger heat transfer coefficient that says so.
Background
With the overall advance of basic construction in China, particularly the construction of infrastructures such as high-speed rails, subways and highways, the application of shield tunnel boring machines is more and more common. The water-cooling frequency conversion device has the advantages of enabling the cutter head motor to operate stably without impact, being in place slowly, prolonging the service life, improving the safety of the motor and the like, so that the application of the water-cooling frequency conversion device on the shield tunnel boring machine is promoted to be more and more popularized.
At present, the assembled water-cooling frequency conversion device is generally tested before leaving the factory, the core component of the water-cooling heat transfer device is a plate heat exchanger, the plate heat exchanger is a theoretical calculation value when the design and the selection are carried out, and a testing device for the plate heat exchanger is lacked before assembly, so that if the water-cooling frequency conversion device is unqualified in test, the disassembly and analysis are needed, and time and labor are wasted. Therefore, it is necessary to test the heat exchange coefficient of the core component plate heat exchanger in advance when designing the shield water-cooling frequency conversion device, and to avoid that the heat exchange capacity of the equipment can not meet the design requirements in the actual operation process at the later stage.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a test plate heat exchanger heat transfer coefficient's heat loading device can simulate the on-the-spot use operating mode of engineering and test plate heat exchanger's heat transfer performance before dispatching from the factory, ensures that its heat transfer ability satisfies the design demand.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a heat load device for testing the heat exchange coefficient of a plate heat exchanger comprises: the system comprises a heat production device, an internal circulation pipeline system, an external circulation pipeline system and a heat dissipation device; the heat production device, the internal circulation pipeline system, the plate heat exchanger to be tested, the external circulation pipeline system and the heat dissipation device are sequentially connected; the plate heat exchanger to be tested is provided with two hot side interfaces and two cold side interfaces; the internal circulation pipeline system is connected into two hot side interfaces of the plate heat exchanger to be tested, and the external circulation pipeline system is connected into two cold side interfaces of the plate heat exchanger to be tested;
the heat generating device is used for heating the fluid medium in the internal circulation pipeline system; the plate heat exchanger to be tested is used for exchanging heat between the fluid medium of the internal circulation pipeline system and the fluid medium of the external circulation pipeline system; the internal circulation pipeline system and the external circulation pipeline system are respectively used for monitoring related parameters of the fluid medium before and after heat exchange; the heat dissipation device is used for dissipating heat of fluid media in the external circulation pipeline system.
Further, the internal circulation pipe system includes: the system comprises an internal circulation pipeline, and an internal circulation water pump, an internal circulation water supply thermometer, an internal circulation water return thermometer and an internal circulation flowmeter which are arranged on the internal circulation pipeline; the internal circulation pipeline is of a closed structure; the two hot side interfaces of the plate heat exchanger to be tested are respectively a hot side water supply interface and a hot side water return interface; the internal circulation water supply thermometer is arranged close to the hot side water supply interface; the internal circulation return water thermometer is installed close to the hot side return water interface.
Further, the external circulation pipe system includes: the system comprises an external circulation pipeline, and an external circulation water pump, an external circulation water supply thermometer, an external circulation water return thermometer and an external circulation flowmeter which are arranged on the external circulation pipeline; the two cold side interfaces of the plate heat exchanger to be tested are respectively a cold side water supply interface and a cold side water return interface; the external circulation water supply thermometer is installed close to the cold side water supply connector, and the external circulation water return thermometer is installed close to the cold side water return connector; the outer circulation pipeline is of an open structure, and the open end of the outer circulation pipeline is connected into the heat dissipation device.
Furthermore, the heat dissipation device comprises a cooling tower, a spray head and a cooling fan; the open ends of the external circulation pipeline are respectively a water supply end and a water return end, the water supply end of the external circulation pipeline extends into the fluid medium in the cooling tower, and the water return end is provided with the spray head; the cooling fan is arranged close to the spray head and used for evaporating and radiating fluid media sprayed by the spray head.
Further, the heat generating device comprises a plurality of electric heat generating devices.
According to the above technical scheme, compare with prior art, the utility model provides a test plate heat exchanger heat transfer coefficient's heat loading device, the heat transfer coefficient who surveys plate heat exchanger in advance through the use operating mode of simulation engineering scene before the product dispatches from the factory to ensure that its heat transfer ability can satisfy the designing requirement, avoid the later stage to be unsatisfied designing requirement at the heat transfer ability of actual in-process equipment of commissioning, lead to the water-cooling converter to send high temperature signal (early warning), the condition that probably sends tripping signal (shut down) even takes place.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is the utility model provides a test plate heat exchanger heat transfer coefficient's heat load device's schematic structure diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the utility model discloses test plate heat exchanger heat transfer coefficient's heat loading device, include: the system comprises a heat generating device 1, an internal circulation pipeline system 2, an external circulation pipeline system 4 and a heat radiating device 5; the heat production device 1, the internal circulation pipeline system 2, the plate heat exchanger 3 to be tested, the external circulation pipeline system 4 and the heat dissipation device 5 are sequentially connected; the plate heat exchanger 3 to be tested is provided with two hot side interfaces and two cold side interfaces; the internal circulation pipeline system 2 is connected into two hot side interfaces of the plate heat exchanger 3 to be tested, and the external circulation pipeline system 4 is connected into two cold side interfaces of the plate heat exchanger 3 to be tested;
the heat generating device 1 is used for heating fluid medium in the internal circulation pipeline system 2; the plate heat exchanger 3 to be tested is used for exchanging heat between the fluid medium of the internal circulation pipeline system 2 and the fluid medium of the external circulation pipeline system 4; the internal circulation pipeline system 2 and the external circulation pipeline system 4 are respectively used for monitoring related parameters of fluid media before and after heat exchange; the heat sink 5 is used for dissipating heat of the fluid medium in the external circulation pipe system 4.
Wherein the heat generating device 1 comprises a plurality of electric heating devices 6. The electric heating device 6 with rated power continuously outputs heat, the heat is transferred to the plate heat exchanger 3 to be tested through the internal circulation fluid medium of the internal circulation pipeline system 2 (primary heat exchange equipment), the heat on the plate heat exchanger 3 is transferred to the heat dissipation device 5 to be tested through the external circulation fluid medium of the external circulation pipeline system 4 (secondary heat exchange equipment), and finally the heat dissipation device 5 is started to perform evaporation heat dissipation.
In one embodiment, the internal circulation pipe system 2 includes: the system comprises an internal circulation pipeline 21, and an internal circulation water pump 22, an internal circulation water supply thermometer 23, an internal circulation water return thermometer 24 and an internal circulation flowmeter 25 which are arranged on the internal circulation pipeline 21; the internal circulation pipeline 21 is of a closed structure; the two hot side interfaces of the plate heat exchanger 3 to be tested are respectively a hot side water supply interface and a hot side water return interface; the internal circulation water supply thermometer 23 is installed near the hot side water supply interface; an internal circulation return water thermometer 24 is mounted near the hot side return water connection.
In one embodiment, the external circulation pipe system 4 includes: an external circulation pipeline 41, and an external circulation water pump 42, an external circulation water supply thermometer 43, an external circulation water return thermometer 44 and an external circulation flow meter 45 which are installed on the external circulation pipeline 41; two cold side interfaces of the plate heat exchanger 3 to be tested are respectively a cold side water supply interface and a cold side water return interface; an external circulation water supply thermometer 43 is installed close to the cold side water supply connector, and an external circulation water return thermometer 44 is installed close to the cold side water return connector; the outer circulation pipe 41 has an open structure, and an open end thereof is connected to the heat sink 5.
In the embodiment of the present invention, when the two internal and external circulation pipe systems circulate (through pipe connection, the flow direction of the fluid medium is the same as the arrow direction on the corresponding pipe in fig. 1), the fluid medium (such as water) of the internal circulation pipe system 2 (primary heat exchange device) and the fluid medium of the external circulation pipe system 4 (secondary heat exchange device) require a large difference (the former is a closed circulation system, which is not communicated with the atmosphere and is not easily polluted; the latter is an open circulation system, which is communicated with the atmosphere and is easily polluted), which is separated by the multi-layer plate of the plate heat exchanger 3 to be tested, wherein the power source of the internal circulation pipe system 2 (primary heat exchange device) is the internal circulation water pump 22, when the internal circulation pipe system 2 (primary heat exchange device) works, the heat generated by the electric heating device 6 of the heat generating device is brought to the plate heat exchanger 3, the power source of the external circulation pipe system 4 (secondary heat exchange device) is the external circulation water pump 42, when the external circulation pipe system 4 (secondary heat exchange device) works, the heat on the heat exchanger 3 to be tested is brought to the heat radiating device 5 to be evaporated.
In one embodiment, the heat sink 5 includes a cooling tower 51, a spray head 52, and a cooling fan 53; the open ends of the external circulation pipeline 41 are respectively a water supply end and a water return end, the water supply end extends into the fluid medium in the cooling tower 51, and the water return end is provided with a spray head 52; the cooling fan 53 is installed near the nozzle and is used for evaporating and dissipating heat of the fluid medium sprayed from the nozzle.
The embodiment of the utility model provides an in, the cooling fluid medium among the cooling tower 51 is stretched into to the water supply end of the open end of outer circulating line 41, and the plate heat exchanger 3 that awaits measuring carries out the heat exchange with cooling fluid medium and fluid among the inner circulating line 21, takes away the heat among the inner circulating line 21, then the fluid medium blowout after the shower nozzle 52 through the return water end will exchange heat, and the rethread cooling fan 53 dispels the heat with spun fluid medium to reach the mesh that reduces cooling tower spray water temperature.
When the heat of the whole heat load device keeps a balance state, the heat exchange coefficient can be tested by 6 detection instruments including an internal circulation water supply thermometer 23, an internal circulation water return thermometer 24 and an internal circulation flow meter 25 of the internal circulation pipeline system 2 (primary heat exchange equipment), and an external circulation water supply thermometer 43, an external circulation water return thermometer 44 and an external circulation flow meter 45 of the external circulation pipeline system 4 (secondary heat exchange equipment). The specific test mode of the heat exchange coefficient is as follows:
1. and (3) checking a heat load device (such as a circuit, a water path, a pipe interface of the plate heat exchanger to be detected and the like) before starting.
2. The internal circulation water pump 22 on the internal circulation pipe system 2, the external circulation water pump 42 on the external circulation pipe system 4 and the cooling fan 53 on the heat sink 5 are started.
3. The corresponding flow is output according to the theoretical calculation flow requirement of the plate heat exchanger 3 to be measured (the flow range can be adjusted by frequency conversion of a frequency converter of a water pump motor, for example, the range is 0.001-0.01 m 3 In s), that is, the internal circulation flow meter 25 in the internal circulation line system 2 and the internal circulation flow meter 45 in the external circulation line system 4 are checked, and the flow rates of the two flow meters are adjusted to be different as much as possible (typically, the difference is 10 to 30%).
4. Starting the electric heating devices 6 on the heat generating device 1 (determining which combinations to put into according to the theoretical calculation heat of the plate heat exchanger 3 to be measured, for example, 6 groups of electric heating devices are provided, and the heat generating power is 10 × 10 3 W、10×10 3 W、20×10 3 W、20×10 3 W、50×10 3 W and 50X 10 3 W, if the theoretical calculation heat production power requirement is 100 x 10 3 W, then different permutation combinations are possible, e.g. 50X 10 3 +50×10 3 、50×10 3 +20×10 3 +20×10 3 +10×10 3 And can be started according to actual conditions).
5. After the heat load device operates stably (the process from starting to stable operation generally takes 600s, and at this time, the heat of the heat generating device, the heat exchange device and the heat dissipation device is in a balanced state relatively), data on 6 detection instruments are collected at the same time at intervals (generally, the interval is 100, 200s, and generally, the process takes 600 s), namely, an internal circulation water supply thermometer 23 (T23), an internal circulation water return thermometer 24 (T24), an internal circulation flow meter 25 (F25) on the internal circulation pipeline system 2, an external circulation water supply thermometer 43 (T43), an external circulation water return thermometer 44 (T44) and an external circulation flow meter 45 (F45) on the external circulation pipeline system 4, and generally, 3-5 groups of data are collected (arithmetic mean value is taken) so that the arithmetic mean value of the relevant collected data is substituted into formulas (1) - (5) for calculation, and finally, the heat exchange coefficient K of the plate heat exchanger 3 to be measured is obtained.
6. The thermal load device is restored after shutdown (initialization state).
The calculation formula of the heat exchange coefficient of the plate heat exchanger to be measured is as follows:
Q 1 ＝C 1 ·q m1 ·ΔT m1 ＝C 1 ·ρ 1 ·F 25 ·(T 23 -T 24 ) (1)
Q 2 ＝C 2 ·q m2 ·ΔT m2 ＝C 2 ·ρ 2 ·F 45 ·(T 44 -T 43 ) (2)
Q 1 ＝Q 2 ＝Q 3 (3)
wherein Q 1 For the heat production of heat-producing devices, Q 2 For the heat-dissipating capacity of the heat-dissipating device, Q 3 The unit of the heat exchange quantity of the plate heat exchanger to be measured is watt (W); c 1 Is the specific heat capacity of the internal circulating fluid medium in joules per kilogram kelvin (J/(kg · K)); q. q of m1 Mass flow rate of the internal circulation fluid medium, unit is kilogram per second (kg/s); delta T m1 The temperature difference of liquid supply and liquid return of the internal circulation fluid medium is expressed in Kelvin (K); rho 1 Is the density of the internally circulating fluid medium and has a unit of kilograms per cubic meter (kg/m) 3 )，F 25 Is the flow rate of the internal circulation fluid medium and has the unit of cubic meter per second (m) 3 /s)；T 23 Is the temperature of the liquid supply of the internally circulating fluid medium in Kelvin (K), T 24 Is the return temperature of the internal circulation fluid medium, and the unit is Kelvin (K); c 2 Is the specific heat capacity joules per kilogram kelvin (J/(kg · K)) of the externally circulating fluid medium; q. q.s m2 In kilograms per second (kg/s) of mass flow of the externally circulating fluid medium; delta T m2 The temperature difference of liquid supply and return of the external circulation fluid medium is expressed in Kelvin (K); rho 2 Is the density unit of the externally circulating fluid medium in kilograms per cubic meter (kg/m) 3 )；F 45 Is the flow rate of the externally circulating fluid medium and has the unit of cubic meter per second (m) 3 /s)；T 43 Is the feed liquid temperature of the externally circulating fluid medium, and has the unit of Kelvin (K); t is 44 Is the return temperature of the externally circulating fluid medium in kelvin (K); delta T m3 Is the log mean temperature difference in kelvin (K); k is the heat transfer coefficient in units of watts per square meter Kelvin (W/(m) 2 K)); f is a correction factor, is dimensionless, and takes 1; a is the heat exchange area of the plate heat exchanger, and the unit is square meter (m) 2 )。
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A heat load device for testing heat exchange coefficient of a plate heat exchanger is characterized by comprising: the system comprises a heat production device, an internal circulation pipeline system, an external circulation pipeline system and a heat dissipation device; the heat production device, the internal circulation pipeline system, the plate heat exchanger to be tested, the external circulation pipeline system and the heat dissipation device are sequentially connected; the plate heat exchanger to be tested is provided with two hot side interfaces and two cold side interfaces; the internal circulation pipeline system is connected into two hot side interfaces of the plate heat exchanger to be tested, and the external circulation pipeline system is connected into two cold side interfaces of the plate heat exchanger to be tested;
the heat generating device is used for heating the fluid medium in the internal circulation pipeline system; the plate heat exchanger to be tested is used for exchanging heat between the fluid medium of the internal circulation pipeline system and the fluid medium of the external circulation pipeline system; the internal circulation pipeline system and the external circulation pipeline system are respectively used for monitoring related parameters of the fluid medium before and after heat exchange; the heat dissipation device is used for dissipating heat of fluid media in the external circulation pipeline system.
2. The heat load device for testing the heat exchange coefficient of a plate heat exchanger according to claim 1, wherein the internal circulation pipeline system comprises: the system comprises an internal circulation pipeline, and an internal circulation water pump, an internal circulation water supply thermometer, an internal circulation water return thermometer and an internal circulation flowmeter which are arranged on the internal circulation pipeline; the internal circulation pipeline is of a closed structure; the two hot side interfaces of the plate heat exchanger to be tested are respectively a hot side water supply interface and a hot side water return interface; the internal circulation water supply thermometer is arranged close to the hot side water supply interface; and the internal circulation return water thermometer is arranged close to the hot-side return water interface.
3. The heat load device for testing the heat exchange coefficient of the plate heat exchanger according to claim 1, wherein the external circulation pipeline system comprises: the system comprises an external circulation pipeline, and an external circulation water pump, an external circulation water supply thermometer, an external circulation water return thermometer and an external circulation flowmeter which are arranged on the external circulation pipeline; the two cold side interfaces of the plate heat exchanger to be tested are respectively a cold side water supply interface and a cold side water return interface; the external circulation water supply thermometer is installed close to the cold side water supply connector, and the external circulation water return thermometer is installed close to the cold side water return connector; the outer circulation pipeline is of an open structure, and the open end of the outer circulation pipeline is connected into the heat dissipation device.
4. The heat load device for testing the heat exchange coefficient of the plate heat exchanger according to claim 3, wherein the heat dissipation device comprises a cooling tower, a spray head and a cooling fan; the open ends of the external circulation pipeline are respectively a water supply end and a water return end, the water supply end of the external circulation pipeline extends into the fluid medium in the cooling tower, and the water return end is provided with the spray head; the cooling fan is arranged close to the spray head and used for evaporating and radiating fluid media sprayed by the spray head.
5. The heat loading device for testing the heat exchange coefficient of a plate heat exchanger according to claim 1, wherein the heat generating device comprises a plurality of electric heating devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222695184.0U CN218444498U (en) | 2022-10-11 | 2022-10-11 | Heat load device for testing heat exchange coefficient of plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222695184.0U CN218444498U (en) | 2022-10-11 | 2022-10-11 | Heat load device for testing heat exchange coefficient of plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218444498U true CN218444498U (en) | 2023-02-03 |
Family
ID=85043266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222695184.0U Active CN218444498U (en) | 2022-10-11 | 2022-10-11 | Heat load device for testing heat exchange coefficient of plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218444498U (en) |
-
2022
- 2022-10-11 CN CN202222695184.0U patent/CN218444498U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| He et al. | Optimal thermal management of server cooling system based cooling tower under different ambient temperatures | |
| US8925333B2 (en) | Thermoelectric-enhanced air and liquid cooling of an electronic system | |
| CN102804098A (en) | Electrical device cooling efficiency monitoring | |
| TWI711920B (en) | Coolant distribution unit | |
| CN109443075B (en) | Thermal performance evaluation method and monitoring system for closed cooling tower | |
| Song et al. | Numerical and experimental investigation of thermal performance in data center with different deflectors for cold aisle containment | |
| Fan et al. | Analytical design methodology for liquid based cooling solution for high tdp cpus | |
| CN112234485A (en) | Semiconductor refrigeration cooling system based on circulation heat dissipation | |
| CN107484395A (en) | A kind of low energy consumption water-cooled container data center and temprature control method | |
| Wu et al. | Full-scale two-phase liquid immersion cooing data center system in tropical environment | |
| CN218444498U (en) | Heat load device for testing heat exchange coefficient of plate heat exchanger | |
| Heydari et al. | Liquid to Liquid Cooling for High Heat Density Liquid Cooled Data Centers | |
| Erden et al. | Experimental investigation of CRAH bypass for enclosed aisle data centers | |
| TWM413828U (en) | Cooling system | |
| CN115597898A (en) | Heat load device for testing heat exchange coefficient of plate heat exchanger and testing method thereof | |
| Tian et al. | A new mathematical model for multi-scale thermal management of data centers using entransy theory | |
| Sickinger et al. | Energy Performance Testing of Asetek's RackCDU System at NREL's High Performance Computing Data Center | |
| Minazzo et al. | Air-Cooled Closed Loop Thermosyphon Cooling System Experimental Campaign: Effects of Working Fluid, Heat Load and Air Flow Rate | |
| CN104992066B (en) | Condenser heat transfer coefficient computational methods based on two dimensionless numbers | |
| Nadjahi et al. | Passive cooling and thermal management in data centers | |
| CN214314123U (en) | Semiconductor refrigeration cooling system based on circulation heat dissipation | |
| CN217563997U (en) | Liquid cooling system | |
| Chen et al. | Experimental research and energy effectiveness analysis on chip-level two-stage loop thermosyphon system for data centre free cooling | |
| Chen et al. | Using plate heat exchanger (PHE) for totally enclosed air-to-air cooled (TEAAC) motor | |
| CN220510109U (en) | Heat-dissipation water cooling machine for new energy battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |