CN106596163B - Comprehensive experiment system for testing heat radiation performance of heating equipment - Google Patents
Comprehensive experiment system for testing heat radiation performance of heating equipment Download PDFInfo
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- CN106596163B CN106596163B CN201710054772.7A CN201710054772A CN106596163B CN 106596163 B CN106596163 B CN 106596163B CN 201710054772 A CN201710054772 A CN 201710054772A CN 106596163 B CN106596163 B CN 106596163B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
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Abstract
The invention provides a comprehensive experiment system for testing heat dissipation performance of heating equipment, which comprises: the test chamber comprises an inner wall, a test environment cabin is formed in the inner wall, an outer wall is arranged outside the inner wall, an air regulation cavity is formed between the inner wall and the outer wall, and the test environment cabin is used for placing a heating terminal device to be tested; the output part of the hot water supply device is connected with the water inlet end of the heating end device, and the input part of the hot water supply device is connected with the water outlet end of the heating end device so as to supply heat medium water for the heating end device; the air cooling control system comprises an air conditioning unit, and the input end of the air conditioning unit is communicated with the bottom of the air conditioning cavity; the monitoring control system comprises a cabin temperature sensor, an inlet temperature sensor, an outlet temperature sensor, a flow detection device and a control circuit; the low water level tank, the high water level tank and the heating tail end device form a communicating vessel; the control circuit is controlled by a digital signal. The invention has the beneficial effects that: experimental data are provided for evaluating the heat transfer of a heating tip device of a test heating apparatus.
Description
Technical Field
The invention relates to an experimental system, in particular to a comprehensive experimental system for testing heat dissipation performance of heating equipment.
Background
In the prior art, a heating end device 6 is provided in a heating apparatus, the heating end device 6 is in the form of a heating medium water coil pipe or the like, the heating apparatus supplies heating medium water to the heating end device 6, and the heating medium water exchanges heat with air to heat the air. In order to ensure that the heat dissipation performance of the heating end device 6 is higher in the heat exchange process of the heating medium water and the air, the heating end device 6 needs to be tested when the heating end device 6 leaves the factory, the inlet and outlet temperatures of the heating end device 6 need to be tested in the test process, the flow rate of the heating medium water flowing through the heating end device 6 in unit time is tested, the heat load Q exchanged in the heat transfer process can be used for evaluating the heat exchange capability of the heating end device 6, and in order to obtain the heat load Q, the calculation formula is as follows: q=m×c (T2-T1), where T2 is the temperature of the water outlet end of the heating end device 6 (T2 is K), T1 is the temperature of the water inlet end of the heating end device 6 (T1 is K), and C is the specific heat capacity (C is
) M is the mass (M is kg) of the heat medium water flowing through the heating terminal device 6 in unit time. To obtain the flow of the heat medium water in unit timeThe mass M of the heating tip device 6 is represented by the formula m=ρ×v×s (where ρ is the density of water, v is the flow rate of the heating medium water, and s is the cross-sectional area of the heating tip device 6 flowing therethrough). To sum up, in order to evaluate the heat exchange capability of the heating terminal device 6, it is necessary to test T2, T1 and M, but the conventional device has the following drawbacks:
1) In the prior art, the equipment without auxiliary test can perform test on the index influencing the heat radiation performance of the heating end device 6;
2) In addition, in the prior art, the influences of the change of the water temperature of the heating medium, the change of the water flow of the heating medium, the heat radiation environment and the like are not considered, the change of the water temperature of the heating medium and the change of the water flow of the heating medium are directly reflected by different working conditions of the heating end device 6, the heat radiation performance of the heating end device 6 is not evaluated under the different working conditions, the change of the heat radiation environment is directly related to the change of T2 and T1, so that the evaluation of the heat radiation performance of the heating end device 6 is inaccurate, in addition, the measurement of the flow is generally performed by adopting the measurement of a flowmeter, the measurement result of the general flowmeter is not accurate enough, and the evaluation of the heat radiation performance of the heating end device 6 is further inaccurate.
Disclosure of Invention
The invention provides a comprehensive experimental system for testing heat dissipation performance of heating equipment, which provides experimental data for evaluating heat exchange performance of a heating terminal device of the heating equipment.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a heating equipment heat dispersion test comprehensive experiment system comprises:
the test chamber comprises an inner wall, a test environment cabin is formed in the inner wall, an outer wall is arranged outside the inner wall, an air regulation cavity is formed between the inner wall and the outer wall, and the test environment cabin is used for placing a heating terminal device to be tested;
the output part of the hot water supply device is connected with the water inlet end of the heating end device, and the input part of the hot water supply device is connected with the water outlet end of the heating end device so as to supply heat medium water for the heating end device;
the air cooling control system comprises an air conditioning unit, wherein the input end of the air conditioning unit is communicated with the bottom of the air conditioning cavity, and the output end of the air conditioning unit is communicated with the top of the air conditioning cavity so as to timely discharge heat transferred into the air conditioning cavity in the test environment cabin; and
the monitoring control system comprises a cabin temperature sensor, an inlet temperature sensor, an outlet temperature sensor, a flow detection device and a control circuit, wherein the cabin temperature sensor, the inlet temperature sensor, the outlet temperature sensor and the flow detection device are all connected with the control circuit, and the cabin temperature sensor is arranged in the test environment cabin to detect the temperature in the test environment cabin; the inlet temperature sensor is arranged at the water inlet end of the heating end device so as to detect the temperature of the water inlet end of the heating end device; the outlet temperature sensor is arranged at the water outlet end of the heating end device so as to detect the temperature of the water outlet end of the heating end device; the flow detection device is arranged on a pipeline of the hot water supply device to detect the quality of the hot medium water flowing through the heating terminal device in unit time; the hot water supply device air cooling control system is connected with the monitoring control system, and the air cooling control system controls the temperature in the test environment cabin to be constant;
wherein the inner wall is made of heat conducting material, and the outer wall is made of heat insulating material;
the hot water supply device comprises a low water level tank, a high water level tank, a water pump and a cooler, wherein the top of the low water level tank is provided with a liquid return pipe used for communicating the water outlet end of the heating tail end device, and the liquid return pipe is an input part of the hot water supply device; the low water level tank, the high water level tank and the heating tail end device form a communicating vessel; the control circuit is controlled by a digital signal;
the flow detection device comprises an electronic scale, the top surface of the electronic scale is lower than the bottom surface of the high water level tank, a waterway switching mechanism is arranged on a passage for connecting the cooler and the low water level tank, the electronic scale is arranged beside the waterway switching mechanism, and the waterway switching mechanism is connected with the controller so that backwater passing through the cooler flows into the low water level tank or the electronic scale under the control of the controller; the electronic scale is connected with the controller to obtain the quality of backwater in unit time;
the waterway switching mechanism includes: the electronic scale comprises a scale body and a measuring cup positioned on the scale body, wherein a water outlet positioned right above the measuring cup is formed in the bottom surface of the second water tank; the first channel outlet of the cooler is connected with a pipeline, the funnel is positioned below the pipeline outlet, and the funnel is positioned above the isolation plate; the guide rod stretches across the water containing groove and is connected with the receiver, the guide rod is positioned above the isolation plate, and the funnel is connected with the guide rod in a sliding manner; the electromagnet is arranged on the inner wall of the receiver and positioned on one side of the isolation plate, and the electromagnet is electrically connected with the controller; the permanent magnet is arranged at the bottom of the hopper and is opposite to the electromagnet; one end of the spring is connected with the inner wall of the receiver, and the other end of the spring is connected with the funnel; the spring is positioned on one side of the funnel close to the electromagnet, and when the spring is in a natural length, the outlet of the funnel is aligned with the first water tank; when the electromagnet is electrified, the electromagnet attracts with the permanent magnet, and the outlet of the hopper is aligned with the second water tank.
It is preferred that the composition of the present invention,
the top of the low water level tank is provided with a water inlet pipe communicated with a tap water pipe, the bottom of the low water level tank is provided with a water drain pipe, a first valve for opening and closing the water inlet pipe is arranged on the water inlet pipe, a second valve for opening and closing the water drain pipe is arranged on the water drain pipe, and a first heater for heating water in the low water level tank is arranged in the low water level tank;
the bottom surface of the high water level tank is higher than the top surface of the low water level tank, and a second heater for heating water in the high water level tank is arranged in the high water level tank; and
the water inlet end of the water pump is communicated with the low water level tank through a third valve, and the water outlet end of the water pump is communicated with the high water level tank;
wherein, the bottom of the high water level tank is provided with a liquid supply pipe for communicating the water inlet end of the heating terminal device, the liquid supply pipe is an output part of the hot water supply device, and a fifth valve for opening and closing the liquid supply pipe is arranged on the liquid supply pipe.
Preferably, the monitoring control system further comprises:
the heating medium water temperature sensor is arranged in the high water level box to collect the water temperature in the high water level box, and the second heater is connected with the control circuit to control the temperature of the heating medium water in the high water level box to be a specified temperature under the control of the control circuit.
Preferably, the control circuit includes:
the input end of the first signal processing circuit is connected with the cabin temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the acquired air temperature in the test environment cabin, namely, the analog signal is converted into a digital signal, and then the digital signal of the temperature of the cavity is obtained;
the input end of the second signal processing circuit is connected with the heat medium water temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the high water level tank to obtain a high water level tank temperature digital signal;
the input end of the third signal processing circuit is connected with the inlet temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the acquired temperature of water in the inlet end of the heating tail end device to obtain an inlet temperature digital signal;
the input end of the fourth signal processing circuit is connected with the outlet temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the outlet end of the heating tail end device to obtain an outlet temperature digital signal;
the output ends of the first signal processing circuit, the second signal processing circuit, the third signal processing circuit and the fourth signal processing circuit are connected to the controller; and
the controller is connected with the second heater through the heater driving circuit and controls the operation of the second heater through a high water level tank temperature digital signal;
the controller is also electrically connected with the air cooling control system to control the operation of the air cooling control system according to the chamber temperature digital signal, the high water level tank temperature digital signal, the inlet temperature digital signal, the outlet temperature digital signal and the flow of the heat medium water.
Preferably, a first channel and a second channel are arranged in the cooler, the cooler is arranged on the liquid return pipe, the heating end device is communicated to the waterway switching mechanism through the first channel of the cooler, one end of the second channel is connected with a tap water pipe, and the other end of the second channel is connected with a floor drain so as to cool the backwater discharged by the heating end device flowing in the first channel.
Preferably, a heating compensator is arranged in a pipeline of the air conditioning unit connected with the air conditioning cavity, and the heating compensator is connected with the control circuit.
Preferably, the high water level tank includes:
the box body is internally provided with an inner cavity;
the baffle plate is arranged on the bottom surface of the box body, the inner cavity is divided into an overflow cavity and a liquid storage cavity by the baffle plate, the bottom surface of the overflow cavity is communicated with an overflow pipe, and a distance is reserved between the top surface of the baffle plate and the top surface of the inner cavity, so that the overflow cavity and the liquid storage cavity are communicated from above the baffle plate; and
the liquid level sensor is arranged in the liquid storage cavity to detect the liquid level in the liquid storage cavity, and the liquid level sensor is connected to the controller through a fifth signal processing circuit.
Compared with the prior art, the invention has the following beneficial effects:
1) The air regulation cavity is arranged, so that the isolation between the test environmental chamber and the outside air is enhanced, the overheat in the test environmental chamber is timely transferred into the air regulation cavity, the air regulation cavity is contacted with the outside air through the outer wall, the outside air only affects the temperature in the air regulation cavity, and further the influence of heat transfer between the test environmental chamber and the outside air on the temperature in the test environmental chamber is avoided;
2) By arranging the air cooling control system, the heat in the test environment cabin is discharged in time, and the temperature in the test environment cabin is accurately controlled;
3) By setting the inner wall as a heat conducting material, conditions are provided for timely transferring the overheat in the test environmental cabin into the air regulation cavity;
4) The comprehensive test system for testing the heat radiation performance of the heating equipment is provided with a stable hot water supply device, a heat radiation environment test cabin and a reserved connection module of various heating equipment, and comprises an accurate flow metering device and a complete operation monitoring system, so that the thermal monitoring technology and implementation scheme of the test process for the heat radiation performance of the heating equipment are comprehensively embodied, the test analysis of the full working condition performance of various heating equipment can be carried out, the process control law research work of typical thermal objects can be carried out, the practical value is high, and meanwhile, the device can be widely applied to teaching experiments, so that students can know the performance of a heating terminal device designed by themselves.
Drawings
Fig. 1 is a schematic structural diagram of a comprehensive experimental system for testing heat dissipation performance of a heating device.
Fig. 2 is a circuit block diagram of a monitoring control system of the heating equipment heat radiation performance test comprehensive experiment system.
Fig. 3 is a view of the water path switching mechanism of fig. 1 taken in section.
Fig. 4 is a sectional view of the high water tank of fig. 1 in a vertical direction.
In the above figures: 1. a test cell; 11. an inner wall; 12. testing an environmental chamber; 13. an outer wall; 14. an air conditioning cavity; 2. a hot water supply device; 22. a low water level tank; 221. a water inlet pipe; 222. a drain pipe; 223. a first valve; 224. a second valve; 225. a first heater; 23. a high water level tank; 230. a liquid level sensor; 231. a second heater; 232. a fifth valve; 233. a liquid supply pipe; 235. a liquid return pipe; 236. a case; 237. a partition plate; 238. an overflow chamber; 239. a liquid storage cavity; 24. a water pump; 25. a cooler; 3. an air cooling control system; 31. an air conditioning unit; 39. a heating compensator; 42. an electronic scale; 421. weighing the body; 422. a measuring cup; 43. a waterway switching mechanism; 431. a receptacle; 432. a funnel; 433. a guide rod; 434. an electromagnet; 435. a permanent magnet; 436. a spring; 437. a partition plate; 438. a first water tank; 439. a second water tank; 6. heating end device.
Detailed Description
As shown in fig. 1, this embodiment provides a comprehensive experimental system for testing heat dissipation performance of a heating device, including:
the test chamber 1 comprises an inner wall 11, a test environment cabin 12 is formed in the inner wall 11, an outer wall 13 is arranged outside the inner wall 11, an air regulation cavity 14 is formed between the inner wall 11 and the outer wall 13, and the test environment cabin 12 is used for placing a heating terminal device 6 to be tested;
the output part of the hot water supply device 2 is connected with the water inlet end of the heating end device 6, and the input part of the hot water supply device is connected with the water outlet end of the heating end device 6 so as to supply heat medium water for the heating end device 6;
the air cooling control system 3 comprises an air conditioning unit 31, wherein the input end of the air conditioning unit 31 is communicated with the bottom of the air regulation cavity 14, and the output end of the air conditioning unit 31 is communicated with the top of the air regulation cavity 14 so as to timely discharge heat transferred into the air regulation cavity 14 in the test environment cabin 12; and
the monitoring control system comprises a cabin temperature sensor, an inlet temperature sensor, an outlet temperature sensor, a flow detection device and a control circuit, wherein the cabin temperature sensor, the inlet temperature sensor, the outlet temperature sensor and the flow detection device are all connected with the control circuit, and the cabin temperature sensor is arranged in the test environment cabin 12 to detect the temperature in the test environment cabin 12; the inlet temperature sensor is arranged at the water inlet end of the heating end device 6 to detect the temperature of the water inlet end of the heating end device 6; the outlet temperature sensor is arranged at the water outlet end of the heating end device 6 to detect the temperature of the water outlet end of the heating end device 6; the flow detection device is arranged on a pipeline of the hot water supply device 2 to detect the quality of the hot medium water flowing through the heating end device 6 in unit time; the hot water supply device 2 is connected with the air cooling control system 3, and the air cooling control system 3 controls the temperature in the test environment cabin 12 to be constant;
wherein the inner wall 11 is made of a heat conductive material, and the outer wall 13 is made of a heat insulating material. In operation, the hot water supply device 2 provides heat medium water for the heating end device 6 in real time, the heating end device 6 is arranged in the test environmental chamber 12, the heating end device 6 transfers heat of the heat medium water into the test environmental chamber 12 through heat transfer, the heat supply in the test environmental chamber 12 is realized, the heating end device 6 continuously supplies heat in the test environmental chamber 12, the temperature chamber temperature sensor detects the temperature in the test environmental chamber 12 in real time, when the temperature in the test environmental chamber 12 is 20 ℃, the control circuit controls the air conditioning unit 31 to work because the heating end device 6 continuously supplies heat in the test environmental chamber 12, the heat in the test environmental chamber 12 is transferred into the air conditioning chamber 14 through heat transfer, the air conditioning unit 31 transfers the heat through an air suction mode, and the air conditioning unit 31 reduces the temperature in the air conditioning chamber 14, the test environmental chamber 12 provides the environment of 20 ℃ required by heat comfort, the cooling performance of the tested heating end device 6 under the test environmental conditions is maintained by the circulation of the air conditioning unit in the air conditioning chamber 14, and the temperature requirement of the test environmental chamber 12 is maintained. And further, the temperature of the water inlet end and the water outlet end of the heating end device 6 is detected in an environment of 20 ℃, and the quality of the heat medium water flowing through the heating end device 6 in unit time is detected, so that the calculation of the heat load is realized, and the heat exchange performance of the heating end device 6 is conveniently evaluated.
In order to design the hot water supply device 2 with a simple structure and convenient use, the hot water supply device 2 comprises:
the low water level tank 22, the top of which is provided with a water inlet pipe 221 communicated with a tap water pipe, the bottom of which is provided with a water drain pipe 222, the water inlet pipe 221 is provided with a first valve 223 for opening and closing the water inlet pipe 221, the water drain pipe 222 is provided with a second valve 224 for opening and closing the water drain pipe 222, and a first heater 225 for heating water in the low water level tank 22 is arranged in the low water level tank 22;
a high water level tank 23 having a bottom surface located at a position higher than a top surface of the low water level tank 22, and a second heater 231 for heating water in the high water level tank 23 being provided therein; and
the water inlet end of the water pump 24 is communicated with the low water level tank 22 through a third valve, and the water outlet end of the water pump 24 is communicated with the high water level tank 23;
the bottom of the high water tank 23 is provided with a liquid supply pipe 233 for communicating with the water inlet end of the heating end device 6, the liquid supply pipe 233 is an output part of the hot water supply device 2, the liquid supply pipe 233 is provided with a fifth valve 232 for opening and closing the liquid supply pipe 233, the top of the low water tank 22 is provided with a liquid return pipe 235 for communicating with the water outlet end of the heating end device 6, and the liquid return pipe 235 is an input part of the hot water supply device 2. In operation, first, the first valve 223 is opened, and tap water is introduced into the low water level tank 22 from the water inlet pipe 221; then, the first heater 225 is started to heat the tap water in the low water level tank 22, and the first heater 225 primarily heats the temperature in the low water level tank 22 to a desired temperature; then, the third valve is opened, the water pump 24 is started, and the water pump 24 in the low water level tank 22 is led into the high water level tank 23; then, the second heater 231 in the high water level tank 23 precisely heats the hot medium water therein to a specified temperature so as to meet the requirement of the heating end device 6; finally, the fifth valve 232 is opened, the low water level tank 22, the high water level tank 23 and the heating end device 6 form a communicating vessel, and because the bottom surface of the high water level tank 23 is higher than the top surface of the low water level tank 22, the heat medium water automatically flows from the high water level tank 23 into the low water level tank 22 by utilizing the difference between the high water level and the low water level, flows out from the bottom of the high water level tank 23 and flows through the heating end device 6 to the lower water tank.
In order to control the supply of heating medium water to the heating tip device 6 to different temperatures so as to realize the test of the heating tip device 6 under different temperature conditions, the monitoring control system further comprises:
and the heat medium water temperature sensor is arranged in the high water level tank 23 to collect the water temperature in the high water level tank 23, and the second heater 231 is connected with the control circuit to control the heat medium water temperature in the high water level tank 23 to be a specified temperature under the control of the control circuit.
As shown in fig. 2, to realize the acquisition of the respective sensor signals and the control of the second heater 231, the control circuit includes:
the input end of the first signal processing circuit is connected with the cabin temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the acquired air temperature in the test environment cabin 12, namely, convert an analog signal into a digital signal, and further obtain a cavity temperature digital signal;
the input end of the second signal processing circuit is connected with the heat medium water temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the high water level tank 23 to obtain a high water level tank 23 temperature digital signal;
the input end of the third signal processing circuit is connected with the inlet temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the acquired temperature of the water in the inlet end of the heating tail end device 6 to obtain an inlet temperature digital signal;
the input end of the fourth signal processing circuit is connected with the outlet temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the outlet end of the heating end device 6 to obtain an outlet temperature digital signal;
the output ends of the first signal processing circuit, the second signal processing circuit, the third signal processing circuit and the fourth signal processing circuit are connected to the controller; and
the controller is connected with the second heater 231 through the heater driving circuit and controls the operation of the second heater 231 through a digital signal of the temperature of the high water level tank 23;
the controller is further electrically connected to the air cooling control system 3 to control the operation of the air cooling control system 3 according to the chamber temperature digital signal, the high water level tank 23 temperature digital signal, the inlet temperature digital signal, the outlet temperature digital signal and the flow rate of the heat medium water.
In order to improve the metering accuracy of the flow rate of the heating medium water in unit time, the flow rate detection device comprises an electronic scale 42, wherein the top surface of the electronic scale 42 is lower than the bottom surface of the high water level tank 23 so as to ensure that the flow of the heating medium water can still utilize the liquid level difference when flowing into the electronic scale 42, a waterway switching mechanism 43 is arranged on a passage connecting the cooler 25 and the low water level tank 22, the electronic scale 42 is arranged beside the waterway switching mechanism 43, and the waterway switching mechanism 43 is connected with a controller so that the backwater passing through the cooler 25 flows into the low water level tank 22 or the electronic scale 42 under the control of the controller; the electronic scale 42 is connected to the controller to obtain the quality of the return water per unit time, i.e. the quality of the flow through the heating end device 6 per unit time. Because the simple flowmeter is calculated through the relation of the size of the pipeline section and the flow rate of the fluid, the flow rate is different from the flow rate in implementation, the defect can be overcome by arranging the electronic scale 42, the heat medium water flowing into the electronic scale 42 in unit time is weighed, the purpose of measuring the heat medium water is achieved, and the flow rate is measured more accurately. The water path switching mechanism 43 provides conditions for the cooler 25 to flow into the low water level tank 22 or the electronic scale 42, so as to avoid volatilization of the heat medium water flowing in the heating end device 6, influence the measurement accuracy during weighing, and guide the flowing heat medium water into the electronic scale 42 when the flow is required to be measured; when the flow is not measured, the waterway switching structure guides the flowing heat medium water into the low water level tank 22, and the waterway switching mechanism 43 switches the pipeline flow channels.
As shown in fig. 1 and 3, in order to design the waterway switching mechanism 43 with a simple structure and convenient use, the waterway switching mechanism 43 includes:
the receiver 431 is in a cup-shaped structure, a separation plate 437 is arranged in a water containing tank of the receiver 431, the separation plate 437 separates the water containing tank into a first water tank 438 and a second water tank 439 which are mutually independent, the first water tank 438 is communicated with the low water level tank 22, the electronic scale 42 comprises a scale body 421 and a measuring cup 422 positioned on the scale body 421, and a water outlet positioned right above the measuring cup 422 is formed in the bottom surface of the second water tank 439;
a funnel 432, the outlet of the first channel of the cooler 25 is connected with a pipeline, the funnel 432 is positioned below the outlet of the pipeline, and the funnel 432 is positioned above the isolating plate 437;
a guide rod 433 straddles the water containing tank and is connected with the receiver 431, the guide rod 433 is positioned above the isolation plate 437, and the funnel 432 is slidably connected with the guide rod 433;
an electromagnet 434 disposed on the inner wall of the receiver 431 and on one side of the isolation plate 437, the electromagnet 434 being electrically connected to the controller;
a permanent magnet 435 disposed at the bottom of the hopper 432 and opposite to the electromagnet 434; and
a spring 436, one end of which is connected to the inner wall of the receiver 431 and the other end of which is connected to the funnel 432;
wherein the spring 436 is located on a side of the funnel 432 adjacent the electromagnet 434, and when the spring 436 is at a natural length, the funnel 432 outlet is aligned with the first water tank 438; when the electromagnet 434 is energized, the electromagnet 434 attracts the permanent magnet 435 and the outlet of the funnel 432 aligns with the second water reservoir 439. When the flow is not measured, the electromagnet 434 is in a power-off state, the spring 436 is in a normal extension length, and the funnel 432 is positioned above the first water tank 438, so that the flowing heat medium water is guided to the low water level tank 22 through the first water tank 438, and the system can work normally; when the flow is required to be measured, the controller sends a signal for starting the electromagnet 434, the electromagnet 434 receives the signal and then is electrified, the electromagnet 434 generates magnetism and is attracted with the permanent magnet 435, under the action of the magnetism, the funnel 432 positioned above the first water tank 438 moves towards the direction of the second water tank 439, the spring 436 is compressed, finally the heat medium water flowing out of the outlet of the funnel 432 enters the measuring cup 422 of the electronic scale 42, the time for supplying the heat medium water in the measuring cup 422 of the funnel 432 is controlled to be the unit time, the electronic scale 42 weighs the heat medium water in the measuring cup 422, and therefore the flow of the heat medium water flowing in the unit time is measured, and the purpose of measuring the flow is achieved; when the flow is not metered again, the electromagnet 434 is disconnected, the electromagnet 434 is in a power-off state, the permanent magnet 435 and the electromagnet 434 lose mutual attractive force, the funnel 432 moves towards the first water tank 438 under the action of the automatic restoring force of the spring 436, and finally the funnel 432 is positioned above the first water tank 438, so that the flowing heat medium water is guided to the low water level tank 22 through the first water tank 438, and the system can work normally again.
The hot water supply device 2 further comprises a cooler 25, a first channel and a second channel are arranged in the cooler 25, the cooler 25 is arranged on the liquid return pipe 235, the heating end device 6 is communicated to the waterway switching mechanism 43 through the first channel of the cooler 25, one end of the second channel is connected with a tap water pipe, and the other end of the second channel is connected with a floor drain so as to cool the backwater discharged by the heating end device 6 flowing in the first channel.
Since the temperature of the air input from the air conditioner 31 may be too low per unit time, it is necessary to raise the temperature output from the air conditioner 31 to a specified temperature, and a heating compensator 39 is provided in a pipe line connecting the air conditioner 31 and the air conditioning chamber 14 to slightly heat the cool air output from the air conditioner 31 to obtain a relatively hot cool air, and the heating compensator 39 is connected to a control circuit.
In order to control the mass flowing through the heating tip device 6 per unit time by controlling only the opening degree of the fifth valve 232, the high water tank 23 includes:
a case 236, an inner cavity being formed in the case 236;
the baffle plate 237 is arranged on the bottom surface of the box body 236, the baffle plate 237 divides the inner cavity into an overflow cavity 238 and a liquid storage cavity 239, the bottom surface of the overflow cavity 238 is communicated with an overflow pipe, and a distance is reserved between the top surface of the baffle plate 237 and the top surface of the inner cavity, so that the overflow cavity 238 and the liquid storage cavity 239 are communicated from above the baffle plate 237; and
a liquid level sensor 230 is disposed in the liquid storage chamber 239 to detect the liquid level in the liquid storage chamber 239, and the liquid level sensor 230 is connected to the controller through a fifth signal processing circuit. Thus, the liquid level sensor 230 can detect the height of the heat medium water in the liquid storage cavity 239, the height of the heat medium water to be reached is equal to the height of the partition plate 237, and when the heat medium water is excessive, the heat medium water automatically enters the overflow cavity 238 from the upper part of the partition plate 237, and is discharged from the overflow pipe; when the heat medium water is too little, the liquid level sensor detects that the liquid level of the heat medium water is too low, the controller controls the water pump 24 to work, the water pump 24 stretches into the liquid storage cavity 239 through the pump pipe, the end part of the pump pipe, which stretches into the liquid storage cavity 239, is provided with the injection head, so that the heat medium water in the liquid storage cavity 239 is uniformly mixed, and the temperature consistency of all parts is ensured. The consistency of the height of the heating medium water in the liquid storage cavity 239 is guaranteed, the consistency of the liquid level difference of the heating medium water in the high water level tank 23 and the heating medium water in the low water level tank 22 is guaranteed, therefore, the consistency of the pressure is guaranteed, the circulation speed of the heating medium water in the heating end device 6 is always equal, the mass M of the heating end device 6 in unit time of the heating medium water flows, according to the formula M=ρ=v×s, under the condition that ρ and v are always unchanged, the opening degree of the fifth valve 232 is adjusted, the size of s is changed, the mass M working condition control of the heating end device 6 in unit time of different heating medium water is realized, and the mass M is equal to a preset value after the control so as to conveniently control the size of M. It will of course be appreciated that: when the liquid storage chamber 239 is overflowed, the liquid level sensor 230 is not required to be arranged, the pump from the lower water tank to the upper water tank is always on, and redundant water flows back to the lower water tank from the overflow chamber 238, so that the water level of the height of the partition plate 237 can be ensured.
For the hot water supply device 2, the constant position height water level is adopted to ensure that the pressure difference between the high water level tank 23 and the low water level tank 22 is constant, so that the flow rate flowing through the heating end device 6 in unit time can be conveniently regulated by regulating the opening of the fifth valve 232; by controlling the operation time of the first heater 225 and the second heater 231, accurate adjustment of the water supply temperature is achieved; the environment temperature is stabilized by constructing the test environment cabin 12 with constant temperature and adopting a mode of matching interlayer air supply cooling with electric heating compensation, and the heating compensator 39 is arranged, so that the compensation of cold air supplied by the air conditioning unit 31 and required by the test environment cabin 12 is realized, and the condition that the temperature of the test environment cabin 12 is lower than the designated temperature due to the fact that the air conditioning unit 31 supplies cold air is avoided; the flow rate of the hot water supply device 2 is monitored by adopting a flowmeter to master the working condition change, meanwhile, the flow rate of the heating medium is measured by adopting a weighing method, and the heat dissipation capacity under the constant heat dissipation environment is determined by combining the inlet and outlet temperature differences of the measured heating end device 6, so that the heating end device 6 can be controlled to work under different working conditions conveniently, and meanwhile, the flow rate precision under different working conditions is improved; the working condition of the tested heating end device 6 is changed by collecting the water temperature flow of the heating medium and the change of the water supply temperature; and a centralized monitoring control system is adopted to realize centralized collection of relevant parameters reflecting operation conditions in the experimental process, and coordinated control of the temperature of the heating medium and the temperature of an environmental cabin and full-condition analysis of the tested heating terminal device 6. The comprehensive experimental system for testing the heat radiation performance of the heating equipment is provided with the stable hot water supply device 2, the testing environment cabin 12 and the reserved connecting modules of various heating equipment, and comprises an accurate flow metering device and a complete operation monitoring system, so that the thermal monitoring technology and implementation scheme of the heat radiation performance testing process of the heating equipment are comprehensively embodied. The test analysis of the full-working condition performance of various heating equipment can be carried out, and the process control law research work of typical thermal objects can be carried out.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (7)
1. A heating equipment heat dispersion test comprehensive experiment system is characterized by comprising:
the test chamber (1) comprises an inner wall (11), a test environment cabin (12) is formed in the inner wall (11), an outer wall (13) is arranged outside the inner wall (11), an air regulation cavity (14) is formed between the inner wall (11) and the outer wall (13), and the test environment cabin (12) is used for placing a heating end device (6) to be tested;
the output part of the hot water supply device (2) is connected with the water inlet end of the heating end device (6), and the input part of the hot water supply device is connected with the water outlet end of the heating end device (6) so as to supply heat medium water for the heating end device (6);
the air cooling control system (3) comprises an air conditioning unit (31), wherein the input end of the air conditioning unit (31) is communicated with the bottom of the air conditioning cavity (14), and the output end of the air conditioning unit (31) is communicated with the top of the air conditioning cavity (14) so as to timely discharge heat transferred into the air conditioning cavity (14) in the test environment cabin (12); and
the monitoring control system comprises a cabin temperature sensor, an inlet temperature sensor, an outlet temperature sensor, a flow detection device and a control circuit, wherein the cabin temperature sensor, the inlet temperature sensor, the outlet temperature sensor and the flow detection device are all connected with the control circuit, and the cabin temperature sensor is arranged in the test environment cabin (12) to detect the temperature in the test environment cabin (12); the inlet temperature sensor is arranged at the water inlet end of the heating end device (6) so as to detect the temperature of the water inlet end of the heating end device (6); the outlet temperature sensor is arranged at the water outlet end of the heating end device (6) so as to detect the temperature of the water outlet end of the heating end device (6); the flow detection device is arranged on a pipeline of the hot water supply device (2) to detect the quality of the hot medium water flowing through the heating end device (6) in unit time; the hot water supply device (2) and the air cooling control system (3) are connected with the monitoring control system, and the air cooling control system (3) controls the temperature in the test environment cabin (12) to be constant;
wherein the inner wall (11) is made of heat conducting material, and the outer wall (13) is made of heat insulating material;
the hot water supply device (2) comprises a low water level tank (22), a high water level tank (23), a water pump (24) and a cooler (25), wherein a liquid return pipe (235) for communicating the water outlet end of the heating end device (6) is arranged at the top of the low water level tank (22), and the liquid return pipe (235) is an input part of the hot water supply device (2); the low water level tank (22), the high water level tank (23) and the heating end device (6) form a communicating vessel; the control circuit is controlled by a digital signal;
the flow detection device comprises an electronic scale (42), wherein the position of the top surface of the electronic scale (42) is lower than the position of the bottom surface of the high water level tank (23), a waterway switching mechanism (43) is arranged on a passage connected with the cooler (25) and the low water level tank (22), the electronic scale (42) is arranged beside the waterway switching mechanism (43), and the waterway switching mechanism (43) is connected with the controller so that backwater passing through the cooler (25) flows into the low water level tank (22) or the electronic scale (42) under the control of the controller; the electronic scale (42) is connected with the controller to obtain the quality of backwater in unit time;
the waterway switching mechanism (43) includes: the electronic scale (42) comprises a scale body (421) and a measuring cup (422) positioned on the scale body (421), wherein a partition plate (437) is arranged in a water containing groove of the support (431), the partition plate (437) divides the water containing groove into a first water groove (438) and a second water groove (439) which are mutually independent, the first water groove (438) is communicated with the low water level tank (22), and a water outlet positioned right above the measuring cup (422) is formed in the bottom surface of the second water groove (439); the first channel outlet of the cooler (25) is connected with a pipeline, the funnel (432) is positioned below the pipeline outlet, and the funnel (432) is positioned above the isolation plate (437); the guide rod (433) stretches across the water containing groove and is connected with the receiver (431), the guide rod (433) is positioned above the isolation plate (437), and the funnel (432) is connected with the guide rod (433) in a sliding manner; an electromagnet (434) arranged on the inner wall of the receiver (431) and positioned on one side of the isolation plate (437), the electromagnet (434) being electrically connected with the controller; a permanent magnet (435) which is arranged at the bottom of the hopper (432) and is arranged opposite to the electromagnet (434); and a spring (436) one end of which is connected to the inner wall of the receiver (431) and the other end of which is connected to the funnel (432); wherein the spring (436) is located on a side of the funnel (432) adjacent the electromagnet (434), and when the spring (436) is at a natural length, the funnel (432) outlet is aligned with the first sink (438); when the electromagnet (434) is energized, the electromagnet (434) attracts the permanent magnet (435), and the outlet of the funnel (432) aligns with the second water reservoir (439).
2. The comprehensive test system for heat radiation performance of heating equipment according to claim 1, wherein,
the low water level tank (22) is provided with a water inlet pipe (221) communicated with a tap water pipe at the top, a water drain pipe (222) is arranged at the bottom, a first valve (223) for opening and closing the water inlet pipe (221) is arranged on the water inlet pipe (221), a second valve (224) for opening and closing the water drain pipe (222) is arranged on the water drain pipe (222), and a first heater (225) for heating water in the low water level tank (22) is arranged in the low water level tank (22);
a high water level tank (23) with a bottom surface higher than the top surface of the low water level tank (22), and a second heater (231) for heating water in the high water level tank (23) is arranged in the high water level tank; and
the water inlet end of the water pump (24) is communicated with the low water level tank (22) through a third valve, and the water outlet end of the water pump (24) is communicated with the high water level tank (23);
the bottom of the high water level tank (23) is provided with a liquid supply pipe (233) for communicating the water inlet end of the heating terminal device (6), the liquid supply pipe (233) is an output part of the hot water supply device (2), and a fifth valve (232) for opening and closing the liquid supply pipe (233) is arranged on the liquid supply pipe (233).
3. The heating installation heat sink testing integrated test system of claim 2, wherein the monitoring control system further comprises:
the heating medium water temperature sensor is arranged in the high water level tank (23) to collect the water temperature in the high water level tank (23), and the second heater (231) is connected with the control circuit to control the heating medium water temperature in the high water level tank (23) to be the designated temperature under the control of the control circuit.
4. A heating installation heat sink testing integrated test system according to claim 3, wherein the control circuit comprises:
the input end of the first signal processing circuit is connected with the cabin temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the acquired air temperature in the test environment cabin (12) to obtain a cavity temperature digital signal;
the input end of the second signal processing circuit is connected with the heat medium water temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the high water level tank (23) to obtain a high water level tank (23) temperature digital signal;
the input end of the third signal processing circuit is connected with the inlet temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the inlet end of the heating terminal device (6) to obtain an inlet temperature digital signal;
the input end of the fourth signal processing circuit is connected with the outlet temperature sensor so as to perform signal conditioning, sampling and A/D conversion on the collected water temperature in the outlet end of the heating end device (6) to obtain an outlet temperature digital signal;
the output ends of the first signal processing circuit, the second signal processing circuit, the third signal processing circuit and the fourth signal processing circuit are connected to the controller; and
the controller is connected with the second heater (231) through the heater driving circuit and controls the operation of the second heater (231) through a high water level tank (23) temperature digital signal;
the controller is also electrically connected with the air cooling control system (3) to control the operation of the air cooling control system (3) according to the chamber temperature digital signal, the high water level tank (23) temperature digital signal, the inlet temperature digital signal, the outlet temperature digital signal and the flow of the heat medium water.
5. The comprehensive test system for heat radiation performance test of heating equipment according to claim 1, wherein a first channel and a second channel are arranged in the cooler (25), the cooler (25) is arranged on the liquid return pipe (235), the heating end device (6) is communicated to the waterway switching mechanism (43) through the first channel of the cooler (25), one end of the second channel is connected with a tap water pipe, and the other end of the second channel is connected with a floor drain so as to cool backwater discharged by the heating end device (6) flowing in the first channel.
6. The comprehensive test system for heat radiation performance test of heating equipment according to claim 1, wherein a heating compensator (39) is arranged in a pipeline of the air conditioning unit (31) connected with the air regulating cavity (14), and the heating compensator (39) is connected with a control circuit.
7. The heating installation heat radiation performance test comprehensive experiment system according to claim 1, wherein the high water level tank (23) comprises:
the box body (236), form the inner chamber in the box body (236);
the baffle plate (237) is arranged on the bottom surface of the box body (236), the inner cavity is divided into an overflow cavity (238) and a liquid storage cavity (239) by the baffle plate (237), an overflow pipe is communicated with the bottom surface of the overflow cavity (238), and a distance is reserved between the top surface of the baffle plate (237) and the top surface of the inner cavity, so that the overflow cavity (238) and the liquid storage cavity (239) are communicated from the upper part of the baffle plate (237); and
and a liquid level sensor (230) arranged in the liquid storage cavity (239) to detect the liquid level in the liquid storage cavity (239), wherein the liquid level sensor (230) is connected to the controller through a fifth signal processing circuit.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000240955A (en) * | 1999-02-23 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Hot water supply heater |
| CN201188038Y (en) * | 2008-04-22 | 2009-01-28 | 天津市产品质量监督检测技术研究院 | System for detecting heat dissipating capacity of heating radiator |
| CN102706679A (en) * | 2012-05-31 | 2012-10-03 | 东南大学 | Constant-temperature water tank for water cooling chiller performance testing system |
| CN103226910A (en) * | 2013-04-01 | 2013-07-31 | 河海大学 | Device for automatically discharging imnoising agent of acoustic doppler velocimetry and use method thereof |
| CN205079328U (en) * | 2015-11-03 | 2016-03-09 | 北京建筑材料检验研究院有限公司 | A heat dispersion detection device for heating radiator |
| CN206420667U (en) * | 2017-01-24 | 2017-08-18 | 天津城建大学 | Heating equipment heat dispersion test synthesis experimental system |
-
2017
- 2017-01-24 CN CN201710054772.7A patent/CN106596163B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000240955A (en) * | 1999-02-23 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Hot water supply heater |
| CN201188038Y (en) * | 2008-04-22 | 2009-01-28 | 天津市产品质量监督检测技术研究院 | System for detecting heat dissipating capacity of heating radiator |
| CN102706679A (en) * | 2012-05-31 | 2012-10-03 | 东南大学 | Constant-temperature water tank for water cooling chiller performance testing system |
| CN103226910A (en) * | 2013-04-01 | 2013-07-31 | 河海大学 | Device for automatically discharging imnoising agent of acoustic doppler velocimetry and use method thereof |
| CN205079328U (en) * | 2015-11-03 | 2016-03-09 | 北京建筑材料检验研究院有限公司 | A heat dispersion detection device for heating radiator |
| CN206420667U (en) * | 2017-01-24 | 2017-08-18 | 天津城建大学 | Heating equipment heat dispersion test synthesis experimental system |
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