CN212988819U - Heat pipe exchanger detecting system - Google Patents
Heat pipe exchanger detecting system Download PDFInfo
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- CN212988819U CN212988819U CN202022330154.0U CN202022330154U CN212988819U CN 212988819 U CN212988819 U CN 212988819U CN 202022330154 U CN202022330154 U CN 202022330154U CN 212988819 U CN212988819 U CN 212988819U
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Abstract
The utility model relates to a heat pipe exchanger detecting system. The heat pipe heat exchanger detection system comprises a heat exchange pipeline, a cooling device, a power pump, a temperature detection device and a heat source simulation device, wherein the temperature detection device is used for detecting the temperature of at least two points on a heat pipe of the heat pipe heat exchanger; the heat source simulator is provided with a heat pipe contact surface which is used for being in heat conduction contact with a heat pipe of the heat pipe exchanger. The vacuum condition in the heat pipe heat exchanger is judged by measuring the temperature of multiple points on the heat pipe heat exchanger, when the vacuum fails, non-condensable gas in the heat pipe does not participate in evaporation-condensation circulation, so that the temperature difference of the heat pipe is large, if the difference value of the temperature of two points on the heat pipe is always larger than the temperature difference value of the vacuum failure, the vacuum failure of the heat pipe heat exchanger can be judged, the detection efficiency is high, the heat pipe does not need to be disassembled for detection, and the technical problem that the detection efficiency is low due to the fact that the vacuum degree of the heat pipe heat exchanger.
Description
Technical Field
The utility model relates to a heat pipe exchanger detecting system.
Background
The heat pipe heat exchanger belongs to the set composite of heat pipe and heat exchanger, need carry out performance test before dispatching from the factory, and the heat pipe heat exchanger can have the problem of leaking, damage, vacuum environment damage after using a period of time moreover, and vacuum environment damages the back, and inside noncondensable gas increases, and the heat conduction effect descends. The condition that vacuum environment damaged in the heat pipe is difficult to detect, only can discover through removing and taking apart the inside of heat pipe exchanger of heat exchanger inspection after this kind of problem appears usually, and heat pipe exchanger's use amount is very big, takes apart heat pipe exchanger and carries out the efficiency that detects extremely low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat pipe exchanger's detection detecting system for solve present heat pipe exchanger and detect the technical problem that the detection efficiency is low that heat pipe vacuum that heat pipe exchanger caused through unpack apart.
The utility model discloses heat pipe exchanger detecting system's technical scheme:
the heat pipe exchanger detecting system includes:
the heat exchange pipeline is provided with a first interface used for being connected with a medium inlet of the heat exchanger in the heat pipe heat exchanger and a second interface used for being connected with a medium outlet of the heat exchanger;
the cooling device is connected in series on the heat exchange pipeline and is used for cooling the heat exchange medium flowing out of the heat pipe exchanger;
the power pump is connected in series on the heat exchange pipeline and used for providing power for the flow of the heat exchange medium in the heat exchange process;
the heat source simulation device is provided with a heat pipe contact surface which is used for being in heat conduction contact with a heat pipe of the heat pipe exchanger;
and the temperature detection device is used for detecting the temperatures of at least two points on the heat pipe when the temperature of the heat source simulation device is increased to be higher than the working starting temperature of the heat pipe.
The utility model has the advantages that: the heat transfer effect is deteriorated when the vacuum in the heat pipe fails, the temperature detection device is used for measuring the temperature of multiple points on the heat pipe when the heat pipe reaches the working starting temperature, the vacuum condition in the heat pipe is judged, when the vacuum of the heat pipe exchanger is intact, the temperature of the heat pipe exchanger is relatively uniform, the temperature difference of each point is relatively small, when the vacuum fails, the temperature of part of the area of the heat pipe exchanger is low, the temperature of part of the area is high, the temperature difference is relatively large, if the difference value of the temperatures of two points on the heat pipe is always larger than the vacuum failure temperature difference value, the vacuum failure of the heat pipe exchanger can be judged, the detection method is simple, the detection efficiency is high, the heat pipe does not need to be disassembled for detection.
Furthermore, a flow meter and a flow regulating valve for regulating the flow of the heat exchange pipeline are connected in series on the heat exchange pipeline. The heat pipe heat exchanger can also adapt to different flow rates by adjusting the flow rate.
Further, a first temperature measuring instrument and a second temperature measuring instrument are connected to the heat exchange pipeline in series, the first temperature measuring instrument is located between the first interface and the cooling device, and the second temperature measuring instrument is located between the second interface and the power pump. The heat pipe performance of the heat pipe exchanger at different temperatures can be tested by the thermodetector.
Furthermore, the temperature detection device comprises a thermocouple for measuring the temperature of the surface of the heat pipe exchanger. The thermocouple has simple structure and low cost.
Furthermore, an expansion oil tank is connected in series in the heat exchange pipeline. The expansion oil tank can discharge the gas in the heat exchange pipeline in time.
Furthermore, the heat exchange pipeline is connected with a shunt pipeline, an inlet of the shunt pipeline is positioned at the downstream of the power pump, an outlet of the shunt pipeline is positioned at the downstream of the cooling device, and a shunt cutoff valve is arranged on the shunt pipeline. The shunt pipeline can shunt to enable part of heat exchange media pumped out by the power pump to directly flow back, and the heat pipe heat exchanger with smaller flow is suitable for the power pump.
Drawings
Fig. 1 is a schematic structural diagram of a heat pipe exchanger inspection system according to embodiment 1 of the present invention;
FIG. 2 is a top view of FIG. 1;
in the figure: 1-heat pipe heat exchanger; 11-a heat pipe; 12-a heat exchanger; 2-heat exchange lines; 21-main pipeline; 22-cold medium hose; 23-a heat medium hose; 3-a cooling device; 4-an oil tank; 41-main oil tank; 42-expansion oil tank; 5-a power pump; 6-a heat source simulation device; 61-a housing; 7-a flow meter; 81-a first temperature detector; 82-a second thermometer; 91-a first pressure gauge; 92-a second pressure gauge; 10-a shunt line; 101-a shunt cutoff valve; 102-a flow regulating valve; 103-third temperature measurer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses heat pipe exchanger detecting system's embodiment 1:
as shown in fig. 1 and fig. 2, the flat-plate heat pipe exchanger is exemplified in this embodiment, the heat pipe exchanger 1 includes a flat-plate heat pipe 11 and a heat exchanger 12, the heat exchanger 12 is fixed on a plate surface of the heat pipe 11, and the heat exchanger 12 has a medium inlet and a medium outlet.
The heat pipe exchanger detection system comprises a heat exchange pipeline 2, a cooling device 3, an oil tank 4, a power pump 5 and a heat source simulation device 6.
The heat exchange line 2 has a second connection for connection to a medium outlet of the heat exchanger 12. The heat exchange pipeline 2 comprises a main pipeline 21, a cold medium hose 22 and a hot medium hose 23, wherein the cold medium hose 22 is connected with a medium inlet of the heat exchanger 12, a first interface used for being connected with the medium inlet of the heat exchanger 12 is formed by an interface of the cold medium hose 22 connected with the heat exchanger 12, the hot medium hose 23 is connected with a medium outlet of the heat exchanger 12, and a second interface used for being connected with the medium outlet of the heat exchanger 12 is formed by an interface of the hot medium hose 23 connected with the heat exchanger 12.
The cooling device 3, the oil tank 4 and the power pump 5 are all connected in series on a main pipeline 21 of the heat exchange pipeline 2, wherein the cooling device 3 is used for cooling heat exchange media flowing out of the heat pipe exchanger, the power pump 5 is used for providing power for flowing of the heat exchange media in the heat exchange process, the oil tank 4 is used for storing heat conduction oil, and the heat conduction oil is used as the heat exchange media to circulate in the heat exchange pipeline 2.
The heat source simulation device 6 includes a casing 61 and a heating member (not shown in the figure), and the casing 61 is provided with a heat pipe contact surface for heat conductive contact with the heat pipe 11. In this embodiment, the heating element is an electric heating wire, and in other embodiments, the heating element may be a heating rod, or may also be an electromagnetic heating element.
Due to damage, leakage or long-time use, a large amount of non-condensable gas is generated inside the heat pipe, so that the vacuum degree of the heat pipe is reduced, and the heat transfer efficiency of the heat pipe is reduced. The temperature of the non-condensable gas is high, so that the temperature inside the heat pipe is not uniform. In order to facilitate the detection of the vacuum degree of the heat pipe, the heat pipe heat exchanger detection system further comprises a temperature detection device, the temperature detection device comprises a plurality of thermocouples (not shown in the figure) used for measuring the temperature of the surface of the heat pipe heat exchanger 1, the temperature of multiple points on the surface of the heat pipe is measured by the thermocouples, and when the measured value of two thermocouples exceeds a vacuum failure temperature difference value, the vacuum degree in the heat pipe is damaged. The heat pipe heat exchanger in the embodiment is used for heat exchange of an electrolytic aluminum tank, the vacuum failure temperature difference value is determined according to a simulation test, the vacuum failure temperature difference value in the embodiment is 10 ℃, and of course, in other embodiments, the vacuum failure temperature difference value obtained through the simulation test is different according to different parameters of the heat pipe.
The size of the vacuum failure temperature difference value can be determined through simulation tests. The simulation test adopts a simulated heat pipe heat exchanger with set specification parameters to simulate the vacuum failure of a heat pipe of the heat pipe heat exchanger, so that the temperature of multiple points on the heat pipe is measured after the heat pipe of the simulated heat pipe heat exchanger is heated to the working starting temperature, wherein the temperature difference value of two points with larger temperature difference on the heat pipe of the simulated heat pipe heat exchanger can be used as the vacuum failure temperature difference value. After the vacuum failure temperature difference value is determined, the heat pipe heat exchangers with the set specification parameters corresponding to the vacuum failure temperature difference value can be detected in batches, and the working efficiency is greatly improved. In other embodiments, the vacuum failure temperature difference value may also be selected based on empirical values.
The utility model discloses the work start temperature of heat pipe indicates the temperature that the heat pipe can normally work, and after the temperature of heat pipe reached work start temperature, the heat transfer medium in the heat pipe began to carry out evaporation-condensation circulation, and when the heat pipe was less than work start temperature, the heat transfer medium in the heat pipe worked unusually.
After detecting that the heat pipe is normal, through the utility model discloses a heat pipe exchanger detecting system can also be used for detecting heat pipe exchanger 1's heat exchange efficiency.
In this embodiment, a flowmeter 7 is connected in series to the heat exchange pipeline 2, the flowmeter 7 is located between the first port and the power pump 5, a first temperature measuring instrument 81, a first pressure gauge 91, a second temperature measuring instrument 82, and a second pressure gauge 92 are further connected to the heat exchange pipeline 2, the first temperature measuring instrument 81 and the first pressure gauge 91 are both located between the first port and the cooling device 3, and the second temperature measuring instrument 82 and the second pressure gauge 92 are both located between the second port and the power pump 5. Recording the reading of the flowmeter 7, and simultaneously recording the reading of the corresponding thermodetector under each flow reading and the reading of the corresponding pressure gauge under each flow reading; according to the density and specific heat of the heat conduction oil at each temperature, the heat exchange coefficient and the heat exchange power of the heat pipe exchanger 1 can be calculated.
In this embodiment, the oil tank 4 includes a main oil tank 41 and an expansion oil tank 42 located above the main oil tank 41, the expansion oil tank 42 is connected in series to the heat exchange pipeline 2, in this embodiment, the expansion oil tank 42 is located between the cooling device 3 and the power pump 5, the heat exchange medium flowing out of the heat pipe heat exchanger 1 enters the expansion oil tank 42 after being cooled by the cooling device 3, and then is pumped into the heat pipe heat exchanger 1 again through the suction effect of the power pump 5, so that the cycle is performed.
In order to adjust the flow rate in the heat exchange pipeline 2, a shunt pipeline 10 is connected to the heat exchange pipeline 2, an inlet of the shunt pipeline 10 is located at the downstream of the power pump 5, an outlet of the shunt pipeline 10 is located at the downstream of the cooling device 3, and a shunt cutoff valve 101 is arranged on the shunt pipeline 10, so that when the flow rate is low, the shunt cutoff valve 101 can be opened, and a part of the heat exchange medium pumped out by the power pump 5 directly returns to the oil tank 4 through the shunt pipeline 10. The power pump 5 can meet the heat exchange requirement of small flow, and the pump with small power does not need to be replaced additionally. In other embodiments, the requirement of small flow rate can be met by replacing pumps with different powers, and a shunt pipeline may not be provided. In other embodiments, a plurality of shunt pipes may be provided.
In this embodiment, the heat exchange pipeline 2 is provided with a flow regulating valve 102, and the flow regulating valve 102 is located between the power pump 5 and the first interface and is located downstream of the inlet of the shunt pipeline 10. The flow in the main line 21 can be regulated by regulating the flow regulating valve 102.
In order to detect the operation condition of the cooling device 3, a third temperature measuring instrument 103 is arranged between the cooling device 3 and the oil tank 4, and the third temperature measuring instrument 103 can detect the temperature of the cooled heat exchange medium and monitor the operation condition of the cooling device 3. The fluid after absorbing heat by the cooling device 3 can be directly discharged or recycled.
The utility model discloses heat pipe exchanger detecting system detects the step to heat pipe exchanger 1 and is:
1) after all the elements and devices are connected; a plurality of thermocouples are installed on the surface of the heat pipe 11, and of course, the thermocouples cannot be installed on the heat conducting surface of the casing, where the heat pipe 11 is in heat conducting contact with the casing 61, so as to avoid the temperature of the casing 61 from affecting the detection result. Reading and recording the thermal electric even data in real time through a computer; the working start temperature of the heat pipe in this embodiment is less than 150 ℃.
2) Closing the flow dividing block valve 101, opening other valves on the heat exchange pipeline 2, starting the power pump 5, and starting to inject a heat exchange medium, namely heat conduction oil, into the heat pipe exchanger 1;
3) circulating the heat conducting oil in the pipeline for a period of time until the gas in the pipeline is exhausted;
4) starting the heat source simulation device 6 and the cooling device 3, raising the temperature of the shell 61 to about 150 ℃ according to a temperature rise curve, namely, to be higher than the working starting temperature of the heat pipe, and meanwhile, adjusting the flow in the heat exchange pipeline 2 to keep the temperature of heat conduction oil in the heat exchange pipeline 2 below 98 ℃ for a set time until the moisture in the heat conduction oil is completely discharged from the expansion oil tank 42 so as to avoid oil injection in the expansion oil tank 42;
5) increasing the power of the heat source simulation device 6 to raise the temperature of the outer side of the shell 61 to 300 ℃, and keeping the power constant;
at this time, when the temperature of the thermocouple on the heat pipe 11 is raised to 150 ℃ to 300 ℃, if the temperature difference delta T is larger than 10 ℃, the vacuum failure of the heat pipe 11 can be judged.
If the vacuum degree of the heat pipe is not in a problem, adjusting a flow regulating valve 102 and a shunt cutoff valve 101, and recording the reading of the flowmeter 7; and simultaneously recording the reading of each corresponding temperature instrument under each flow reading, and the reading of each corresponding pressure meter under each flow reading, and calculating the heat exchange coefficient and the heat exchange power of the flat heat pipe heat exchanger according to the density and specific heat of the heat conducting oil at each temperature.
The utility model discloses heat pipe exchanger detecting system embodiment 2, the difference of heat pipe exchanger detecting system in this embodiment and above-mentioned embodiment only lies in: in this embodiment, the temperature detection device is an electronic thermometer, in other embodiments, only one electronic thermometer is provided, the temperature of multiple points of the heat pipe can be obtained by manually measuring the heat pipe for multiple times, and in other embodiments, a laser thermometer may also be used.
The utility model discloses heat pipe exchanger detecting system embodiment 3, the difference of heat pipe exchanger detecting system in this embodiment and above-mentioned embodiment only lies in: in this embodiment, the heat pipe heat exchanger detection system is only used for detecting the vacuum degree of the heat pipe, and at this time, the heat pipe is not provided with a flowmeter.
The utility model discloses heat pipe exchanger detecting system embodiment 4, the difference of heat pipe exchanger detecting system in this embodiment and above-mentioned embodiment only lies in: in this embodiment, heat source analogue means's shell is the lagging casing, sets up the conducting block in the shell, and the heating member is the heating rod, heats the conducting block through the heating rod, heat pipe exchanger and conducting block heat conduction contact. In other embodiments, the heat source simulator may be constituted by only a heating member on which the heat pipe exchanger is disposed. In other embodiments, the heat source simulation device can also adopt a stove or an electric stove.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. Heat pipe exchanger detecting system, its characterized in that includes:
the heat exchange pipeline is provided with a first interface used for being connected with a medium inlet of the heat exchanger in the heat pipe heat exchanger and a second interface used for being connected with a medium outlet of the heat exchanger;
the cooling device is connected in series on the heat exchange pipeline and is used for cooling the heat exchange medium flowing out of the heat pipe exchanger;
the power pump is connected in series on the heat exchange pipeline and used for providing power for the flow of the heat exchange medium in the heat exchange process;
the heat source simulation device is provided with a heat pipe contact surface which is used for being in heat conduction contact with a heat pipe of the heat pipe exchanger;
and the temperature detection device is used for detecting the temperatures of at least two points on the heat pipe when the temperature of the heat source simulation device is increased to be higher than the working starting temperature of the heat pipe.
2. A heat pipe heat exchanger test system as claimed in claim 1 wherein a flow meter and a flow control valve for regulating the flow rate of the heat exchange line are connected in series to the heat exchange line.
3. A heat pipe heat exchanger detection system according to claim 1 or 2, wherein a first temperature measuring instrument and a second temperature measuring instrument are connected in series on the heat exchange pipeline, the first temperature measuring instrument is located between the first interface and the cooling device, and the second temperature measuring instrument is located between the second interface and the power pump.
4. A heat pipe heat exchanger test system as claimed in claim 1 or 2 wherein the temperature test means comprises a thermocouple for measuring the temperature of the heat pipe surface of the heat pipe heat exchanger.
5. A heat pipe heat exchanger testing system according to claim 1 or 2, wherein an expansion oil tank is connected in series in the heat exchange pipeline.
6. A heat pipe heat exchanger testing system according to claim 1 or 2, wherein a shunt pipeline is connected to the heat exchanging pipeline, an inlet of the shunt pipeline is located downstream of the power pump, an outlet of the shunt pipeline is located downstream of the cooling device, and a shunt cutoff valve is arranged on the shunt pipeline.
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| CN202022330154.0U CN212988819U (en) | 2020-10-19 | 2020-10-19 | Heat pipe exchanger detecting system |
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| CN202022330154.0U CN212988819U (en) | 2020-10-19 | 2020-10-19 | Heat pipe exchanger detecting system |
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| CN212988819U true CN212988819U (en) | 2021-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268924A (en) * | 2020-10-19 | 2021-01-26 | 郑州轻冶科技股份有限公司 | Detection method and detection system for heat pipe exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268924A (en) * | 2020-10-19 | 2021-01-26 | 郑州轻冶科技股份有限公司 | Detection method and detection system for heat pipe exchanger |
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