CN218039310U - Temperature control device for fuel cell engine test - Google Patents
Temperature control device for fuel cell engine test Download PDFInfo
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- CN218039310U CN218039310U CN202222371176.0U CN202222371176U CN218039310U CN 218039310 U CN218039310 U CN 218039310U CN 202222371176 U CN202222371176 U CN 202222371176U CN 218039310 U CN218039310 U CN 218039310U
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Abstract
The utility model provides a temperature control device for fuel cell engine test belongs to fuel cell test technical field, has solved the too big problem that just can't drop into new test place fast of current device heat dissipation loss. The device comprises a heat dissipation shell, a fuel cell engine to be tested in the shell, a placing mechanism, a first plate type heat exchanger, a second plate type heat exchanger, a first proportional valve and a second proportional valve, and a refrigerant refrigerating device outside the shell. One path of the output end of the refrigerant refrigeration equipment is connected with the input end of the first plate heat exchanger through the first proportional valve and the first branch of the first plate heat exchanger in sequence to form a refrigeration main loop, and the other path of the output end of the refrigerant refrigeration equipment is connected with the input end of the second plate heat exchanger through the second proportional valve and the first branch of the second plate heat exchanger in sequence to form a refrigeration auxiliary loop. One path of a cooling liquid outlet on the placing mechanism is connected with a cooling liquid inlet of the first plate type heat exchanger through a branch path two of the first plate type heat exchanger to form a heat exchange main loop, and the other path of the cooling liquid outlet is connected with a cooling liquid inlet of the second plate type heat exchanger through a branch path two of the second plate type heat exchanger to form a heat exchange auxiliary loop.
Description
Technical Field
The utility model relates to a fuel cell tests technical field, especially relates to a temperature control device is used in fuel cell engine test.
Background
Along with the continuous breakthrough and development of fuel cell technology, the application of fuel cell engines in the automobile industry gradually realizes industrialization and can replace the traditional fuel engine. In order to ensure the use reliability and safety, the fuel cell engine is subjected to a performance quality test before leaving a factory, and a special temperature control device is used for carrying out heat dissipation management on the fuel cell engine to be tested during the test.
The water-cooling test bench is a mainstream temperature control device at present. The working principle is that the external circulating water is cooled by cooling medium in an external water cooling unit, and then the internal circulating water of the engine is cooled by the cooled external circulating water (namely, the energy process is transferred into the processes of cooling medium refrigeration → external circulating water → internal circulating water), in the process, the external circulating water is required to control the temperature in an auxiliary way, two energy transfer processes exist, and the heat dissipation loss is large. In addition, the existing water-cooling test bench does not have the autonomous refrigerating capacity, and when the temperature of the cooling liquid of the fuel cell engine is controlled, an external water-cooling unit is required to refrigerate for assistance.
When a test site is newly established every time, a water chilling unit for external circulation refrigeration needs to be added, and the water chilling unit cannot be rapidly tested due to the fact that the time for establishing the water chilling unit is too long, and the investment cost is too high.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing analysis, an embodiment of the present invention is directed to providing a temperature control device for a fuel cell engine test, so as to solve the problem that the heat dissipation loss of the existing device is too large and the existing device cannot be quickly dropped into a new test site.
On one hand, the embodiment of the utility model provides a temperature control device for fuel cell engine test, including the heat dissipation casing, locate the mechanism of imbedding of the fuel cell engine (1) of awaiting measuring in the heat dissipation casing, first plate heat exchanger (5), second plate heat exchanger (22), first proportional valve (16), second proportional valve (19), and locate the refrigerant refrigeration plant (29) outside the heat dissipation casing; wherein the content of the first and second substances,
one path of the output end of the refrigerant refrigeration equipment (29) is sequentially connected with the input end of the first plate type heat exchanger (5) through a first proportional valve (16) and the first branch to form a refrigerant refrigeration main loop, and the other path of the output end of the refrigerant refrigeration equipment is sequentially connected with the input end of the second plate type heat exchanger (22) through a second proportional valve (19) and the first branch to form a refrigerant refrigeration auxiliary loop;
one path of a cooling liquid outlet of a fuel cell engine (1) to be tested arranged on the mechanism is connected with a cooling liquid inlet thereof through a second branch of the first plate heat exchanger (5) to form a heat exchange main loop, and the other path of the cooling liquid outlet is connected with a cooling liquid inlet thereof through a second branch of the second plate heat exchanger (22) to form a heat exchange auxiliary loop.
The beneficial effects of the above technical scheme are as follows: the temperature control device only needs to transmit primary energy to control the temperature of the fuel cell engine during testing, and compared with the existing water-cooling testing device of the fuel cell engine, the water-cooling testing device does not need external circulating cooling liquid for assistance any more, but automatically refrigerates through internal circulation. The internal circulation independent refrigeration can reduce an energy transfer process, thereby reducing energy loss, indirectly improving energy conversion efficiency, reducing the investment of auxiliary facilities without investing in a water cooling unit of external circulation refrigeration when a new test site is established, reducing the investment of the auxiliary facilities, reducing the preparation cost of the device and being capable of quickly investing in tests.
Based on the further improvement of the device, the refrigerant refrigerating equipment (29) adopts one of compression refrigerating equipment, absorption refrigerating equipment and semiconductor refrigerating equipment; and also,
the refrigerant circulating in the refrigerant refrigeration equipment (29) is an environment-friendly refrigerant or a non-environment-friendly refrigerant.
Furthermore, the refrigerant refrigeration equipment (29) further comprises a compressor (10) and a condenser (13) which are connected in sequence.
Furthermore, the temperature control device also comprises a first expansion valve (17) and a second expansion valve (20) which are arranged in the heat dissipation shell; wherein, the first and the second end of the pipe are connected with each other,
a first expansion valve (17) provided between the first proportional valve (16) and the first plate heat exchanger (5);
and a second expansion valve (20) provided between the second proportional valve (19) and the second plate heat exchanger (22).
Furthermore, the temperature control device also comprises a first electric valve (2), a second electric valve (24), a third electric valve (6) and a fourth electric valve (27) which are arranged in the heat dissipation shell; wherein, the first and the second end of the pipe are connected with each other,
one path of a cooling liquid outlet of the fuel cell engine (1) to be tested is sequentially connected with a cooling liquid inlet through a first electric valve (2), a second branch of the first plate type heat exchanger (5) and a third electric valve (6), and the other path of the cooling liquid outlet is sequentially connected with the cooling liquid inlet through a second electric valve (24), a second branch of the second plate type heat exchanger (22) and a fourth electric valve (27).
Furthermore, the temperature control device also comprises a controller which is used for starting the refrigerant refrigeration main loop or simultaneously starting the refrigerant refrigeration main loop and the refrigerant refrigeration auxiliary loop for refrigeration according to the difference value between the temperature of the discharged stack cooling liquid of the fuel cell engine (1) to be tested and a set value after starting and adjusting the refrigeration quantity of the refrigerant refrigeration equipment (29) according to the current test working condition; and also,
the first expansion valve (17) and the second expansion valve (20) are electronic expansion valves;
the output end of the controller is respectively connected with the control ends of the first proportional valve (16), the second proportional valve (19), the first electric valve (2), the second electric valve (24), the third electric valve (6), the fourth electric valve (27), the first expansion valve (17), the second expansion valve (20), the compressor (10) and the condenser (13).
Further, the compressor (10) and the condenser (13) are arranged outdoors, and the heat dissipation shell is arranged indoors.
Further, the controller further comprises a data acquisition unit and a data processing and control unit which are connected in sequence.
Further, the data acquisition unit further includes:
the first temperature sensor (4) is arranged on the inner wall of the output end pipeline of the first electric valve (2);
the second temperature sensor (26) is arranged on the inner wall of the output end pipeline of the second electric valve (24);
the third temperature sensor (8) is arranged on the inner wall of the input end pipeline of the compressor (10);
the fourth temperature sensor (11) is arranged on the inner wall of the pipeline at the output end of the compressor (10);
the fifth temperature sensor (14) is arranged on the inner wall of the pipeline at the output end of the condenser (13);
the sixth temperature sensor (7) is arranged on the inner wall of the outlet pipeline of the first branch of the first plate heat exchanger (5);
and the seventh temperature sensor (23) is arranged on the inner wall of the first outlet pipeline of the branch of the second plate heat exchanger (22).
Further, the data acquisition unit further includes:
the first pressure sensor (3) is arranged on the inner wall of the output end pipeline of the first electric valve (2);
the second pressure sensor (25) is arranged on the inner wall of the pipeline at the output end of the second electric valve (24);
the third pressure sensor (9) is arranged on the inner wall of the input end pipeline of the compressor (10);
the fourth pressure sensor (12) is arranged on the inner wall of the pipeline at the output end of the compressor (10);
the fifth pressure sensor (15) is arranged on the inner wall of the pipeline at the output end of the condenser (13);
the sixth pressure sensor (18) is arranged on the inner wall of the inlet pipeline of the first branch of the first plate heat exchanger (5);
and the seventh pressure sensor (21) is arranged on the inner wall of the inlet pipeline of the branch of the second plate heat exchanger (22).
Further, the data processing and control unit is provided with a display module. The display screen of the display module displays data collected by the first temperature sensor 4, the second temperature sensor 26, the third temperature sensor 8, the fourth temperature sensor 11, the fifth temperature sensor 14, the sixth temperature sensor 7 and the seventh temperature sensor 23, the first pressure sensor 3, the second pressure sensor 25, the third pressure sensor 9, the fourth pressure sensor 12, the fifth pressure sensor 15, the sixth pressure sensor 18 and the seventh pressure sensor 21, and starting states of the refrigerant refrigeration main loop and the refrigerant refrigeration auxiliary loop.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
1. on the basis of the design of the existing water-cooling test bench of the fuel cell engine, the air-conditioning refrigerant refrigeration technology is combined in order, so that the temperature control device with independent and autonomous refrigeration capacity is produced.
2. In the testing process of the fuel cell engine, compared with the existing temperature control device, the energy transfer process of the cooling medium of the fuel cell engine is reduced from 2 times to 1 time, and the energy conversion efficiency is indirectly improved.
3. Use this temperature control device can make newly-built test place can possess the test ability fast, and the current forced air cooling temperature control device of contrast can effectively avoid the noise, and the heat spreads the problem in test space.
The summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.
FIG. 1 is a schematic diagram showing the composition of a temperature control device for a fuel cell engine test according to example 1;
FIG. 2 is a schematic diagram showing the composition of a temperature control device for a fuel cell engine test according to example 2.
Reference numerals are as follows:
1-a fuel cell engine to be tested; 2-first electrically operated valve; 3-a first pressure sensor; 4-a first temperature sensor; 5-a first plate heat exchanger; 6-third electric valve; 7-a sixth temperature sensor; 8-a third temperature sensor; 9-a third pressure sensor; 10-a compressor; 11-a fourth temperature sensor; 12-a fourth pressure sensor; 13-a condenser; 14-a fifth temperature sensor; 15-a fifth pressure sensor; 16-a first proportional valve; 17-a first expansion valve; 18-a sixth pressure sensor; 19-a second proportional valve; 20-a second expansion valve; 21-a seventh pressure sensor; 22-a second plate heat exchanger; 23-a seventh temperature sensor; 24-a second electrically operated valve; 25-a second pressure sensor; 26-a second temperature sensor; 27-fourth electrically operated valve; 28-located outside the heat sink housing; 29-refrigerant refrigeration equipment.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The term "include" and variations thereof as used herein is meant to be inclusive in an open-ended manner, i.e., "including but not limited to". The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like may refer to different or the same object. Other explicit and implicit definitions are also possible below.
Example 1
The utility model discloses an embodiment discloses a temperature control device is used in fuel cell engine test, as shown in FIG. 1, including the heat dissipation casing, locate the fuel cell engine 1 that awaits measuring in the heat dissipation casing put into mechanism, first plate heat exchanger 5, second plate heat exchanger 22, first proportional valve 16, second proportional valve 19 to and locate the external refrigerant refrigeration plant 29 of heat dissipation casing.
One path of the output end of the refrigerant refrigeration equipment 29 is connected to the input end of the first plate heat exchanger 5 through the first proportional valve 16, and the other path is connected to the input end of the second plate heat exchanger 22 through the second proportional valve 19, and the branch of the first plate heat exchanger 5, to form a refrigerant refrigeration auxiliary loop. The refrigerant flows through the refrigerant refrigeration main loop and the refrigerant refrigeration auxiliary loop.
There are many conventional refrigerant refrigeration devices 29, such as the refrigerant compression-expansion refrigeration device in fig. 2, and refrigerant refrigeration devices of other refrigeration modes, which are described with reference to embodiment 2, but are not limited to the scope described in embodiment 2.
One path of a cooling liquid outlet of the fuel cell engine 1 to be tested arranged on the mechanism is connected with a cooling liquid inlet thereof through a second branch of the first plate heat exchanger 5 to form a heat exchange main loop, and the other path of the cooling liquid outlet is connected with a cooling liquid inlet thereof through a second branch of the second plate heat exchanger 22 to form a heat exchange auxiliary loop. And the cooling liquid of the fuel cell engine 1 to be tested flows through the heat exchange main loop and the heat exchange auxiliary loop.
When the fuel cell engine to be tested is implemented, the fuel cell engine 1 to be tested is arranged in the heat dissipation shell, so that the circulation of cooling liquid realizes internal circulation control, and the fuel cell engine to be tested is provided with two sets of independently controlled cooling control branches, namely a main cooling control branch consisting of a refrigerant-exchanging cooling main loop and a heat dissipation main loop, and an auxiliary cooling control branch consisting of a refrigerant-exchanging cooling auxiliary loop and a heat-exchanging auxiliary loop.
Compared with the prior art, the embodiment provides the temperature control device which only needs to transmit primary energy to test the fuel cell engine, and compared with the existing water-cooling test device for the fuel cell engine, the water-cooling test device for the fuel cell engine does not need external circulating cooling liquid for assistance, but automatically refrigerates through internal circulation. The internal circulation independent refrigeration can reduce an energy transfer process, thereby reducing energy loss, indirectly improving energy conversion efficiency, reducing the investment of auxiliary facilities without investing in a water cooling unit of external circulation refrigeration when a new test site is established, reducing the investment of the auxiliary facilities, reducing the preparation cost of the device and being capable of quickly investing in tests.
Example 2
The improvement is carried out on the basis of the embodiment 1, and the refrigerant refrigerating equipment 29 adopts one of compression refrigerating equipment, absorption refrigerating equipment and semiconductor refrigerating equipment.
Preferably, the refrigerant circulating in the refrigerant refrigeration equipment 29 is an eco-refrigerant or a non eco-refrigerant. The types of common environmentally friendly refrigerants can be classified into R134A, R410A, R407C, R417A, R404A, R507, R23, R508A, R508B, R152a, and the like.
Preferably, for a compression-type refrigeration device, the refrigerant refrigeration device 29 further includes a compressor 10 and a condenser 13 connected in sequence, as shown in fig. 2.
Preferably, the temperature control device further comprises a first expansion valve 17 and a second expansion valve 20 arranged in the heat dissipation shell. The expansion valve makes the liquid refrigerant (refrigerant) of middle temperature and high pressure become wet steam of low temperature and low pressure through it, absorbs heat to achieve the refrigeration effect, and can be one of an electronic expansion valve or a thermal expansion valve, etc.
The first expansion valve 17 is provided between the first proportional valve 16 and the first plate heat exchanger 5. And a second expansion valve 20 provided between the second proportional valve 19 and the second plate heat exchanger 22.
Preferably, the temperature control device further comprises a first electric valve 2, a second electric valve 24, a third electric valve 6 and a fourth electric valve 27 which are arranged in the heat dissipation shell.
One path of a cooling liquid outlet of the fuel cell engine 1 to be tested is sequentially connected with a cooling liquid inlet through the first electric valve 2 and the second and third electric valves 6 of the branch of the first plate heat exchanger 5, and the other path of the cooling liquid outlet is sequentially connected with the cooling liquid inlet through the second electric valve 24 and the second and fourth electric valves 27 of the branch of the second plate heat exchanger 22.
Preferably, the temperature control device further comprises a controller.
And the controller is used for starting a refrigerant refrigeration main loop (starting the first proportional valve 16, the first expansion valve 17, the compressor 10 and the condenser 13) or simultaneously starting the refrigerant refrigeration main loop and the refrigerant refrigeration auxiliary loop for refrigeration (starting the first proportional valve 16, the first expansion valve 17, the compressor 10, the condenser 13, the second proportional valve 19 and the second expansion valve 20) according to the difference value between the stack-out coolant temperature of the fuel cell engine 1 to be tested and a set value after starting, and adjusting the refrigeration capacity (control parameters of the refrigerant refrigeration equipment, such as the working frequency of the compressor) of the refrigerant refrigeration equipment 29 according to the current test working condition.
Both the first expansion valve 17 and the second expansion valve 20 are electronic expansion valves. The electronic expansion valve realizes automatic control and energy saving in the heat dissipation shell of the temperature control device and has superior characteristics incomparable to thermal expansion valves. The basic use of the electronic expansion valve is the same as that of the thermal expansion valve.
The output end of the controller is connected with the control ends of the first proportional valve 16, the second proportional valve 19, the first electric valve 2, the second electric valve 24, the third electric valve 6, the fourth electric valve 27, the first expansion valve 17, the second expansion valve 20, the compressor 10 and the condenser 13.
Preferably, the compressor 10 and the condenser 13 are both arranged outdoors, and the heat dissipation shell is arranged indoors, so that heat is prevented from being dissipated into the heat dissipation shell to affect the heat dissipation effect, and meanwhile, noise of the compressor is avoided.
Preferably, the controller further comprises a data acquisition unit and a data processing and control unit which are connected in sequence.
Preferably, the data acquisition unit further comprises a first temperature sensor 4, a second temperature sensor 26, a third temperature sensor 8, a fourth temperature sensor 11, a fifth temperature sensor 14, a sixth temperature sensor 7, a seventh temperature sensor 23, and a first pressure sensor 3, a second pressure sensor 25, a third pressure sensor 9, a fourth pressure sensor 12, a fifth pressure sensor 15, a sixth pressure sensor 18, a seventh pressure sensor 21.
And the first temperature sensor 4 is arranged on the inner wall of the output end pipeline of the first electric valve 2 and used for acquiring the temperature of the stack outlet cooling liquid of the fuel cell engine 1 to be measured.
And the second temperature sensor 26 is arranged on the inner wall of the output end pipeline of the second electric valve 24 and is used for measuring the temperature of the cooling liquid discharged from the stack of the fuel cell engine 1.
And the third temperature sensor 8 is arranged on the inner wall of the input end pipeline of the compressor 10 and used for collecting the temperature of the refrigerant entering the compressor 10.
And the fourth temperature sensor 11 is arranged on the inner wall of the output end pipeline of the compressor 10 and used for collecting the temperature of the refrigerant flowing out of the compressor 10.
And the fifth temperature sensor 14 is arranged on the inner wall of the output end pipeline of the condenser 13 and used for collecting the temperature of the refrigerant flowing out of the condenser 13.
And the sixth temperature sensor 7 is arranged on the inner wall of the first branch outlet pipeline of the first plate heat exchanger 5 and is used for collecting the temperature of the refrigerant after heat exchange of the first plate heat exchanger 5.
And the seventh temperature sensor 23 is arranged on the inner wall of the first outlet pipeline of the branch of the second plate heat exchanger 22 and is used for collecting the temperature of the refrigerant after heat exchange of the second plate heat exchanger 2.
And the first pressure sensor 3 is arranged on the inner wall of the output end pipeline of the first electric valve 2 and is used for acquiring the pressure of the discharged pile cooling liquid of the fuel cell engine 1 to be detected.
And the second pressure sensor 25 is arranged on the inner wall of the output end pipeline of the second electric valve 24 and is used for acquiring the pressure of the stack discharging cooling liquid of the fuel cell engine 1 to be detected.
And the third pressure sensor 9 is arranged on the inner wall of the input end pipeline of the compressor 10 and is used for collecting the pressure of the refrigerant entering the compressor 10.
And the fourth pressure sensor 12 is disposed on an inner wall of the output end pipeline of the compressor 10, and is configured to collect pressure of the refrigerant flowing out of the compressor 10.
And the fifth pressure sensor 15 is arranged on the inner wall of the output end pipeline of the condenser 13 and used for collecting the pressure of the refrigerant flowing out of the condenser 13.
And the sixth pressure sensor 18 is arranged on the inner wall of the inlet pipeline of the first branch of the first plate heat exchanger 5 and used for collecting the pressure of the refrigerant before heat exchange of the first plate heat exchanger 5.
And the seventh pressure sensor 21 is arranged on the inner wall of the branch-inlet pipeline of the second plate heat exchanger 22 and is used for collecting the pressure of the refrigerant before the refrigerant is subjected to heat exchange by the second plate heat exchanger 22.
Preferably, the controller has a display module. The display screen of the display module displays data collected by the first temperature sensor 4, the second temperature sensor 26, the third temperature sensor 8, the fourth temperature sensor 11, the fifth temperature sensor 14, the sixth temperature sensor 7 and the seventh temperature sensor 23, the first pressure sensor 3, the second pressure sensor 25, the third pressure sensor 9, the fourth pressure sensor 12, the fifth pressure sensor 15, the sixth pressure sensor 18 and the seventh pressure sensor 21, and starting states of the refrigerant refrigeration main loop and the refrigerant refrigeration auxiliary loop.
In practice, the preferred control modes of the controller include the following:
1) After a fuel cell engine is arranged in the radiating shell, the temperature control device is electrified, and when the selection of a man-machine interaction interface is started, the controller receives a command, starts the electric valve 2/6/24/27, starts the temperature sensor 4/7/8/11/14/23/26 and starts the pressure sensor 3/9/12/15/18/21/25; and the condenser 13 is started; at this time, the controller monitors the temperatures collected by the temperature sensor 4 and the temperature sensor 26, and identifies whether the temperatures are greater than a set value; if not, no action is taken; if yes, executing the next step;
2) If the temperature collected by the temperature sensor 4 is greater than the set value, the first proportional valve 16 and the first expansion valve 17 are opened, the compressor 10 is started, meanwhile, the controller adjusts the opening degree of the first proportional valve 16 according to different test working conditions at the current moment, so that different refrigerating capacities are obtained, at the moment, the controller again identifies whether the temperature collected by the temperature sensor 4 is greater than the set value, if not, no action is carried out until the test is finished, if yes, the opening degree of the proportional valve 16 is identified to be maximum, if not, the opening degree of the proportional valve 16 is gradually adjusted to be maximum, during the period, the temperature collected by the temperature sensor 4 is continuously and circularly detected to be greater than the set value, when the opening degree of the proportional valve 16 is adjusted to be maximum, at the moment, the temperature collected by the temperature sensor 4 is still greater than the set value, whether the working frequency of the compressor 10 is identified to be maximum, if not, the working frequency of the compressor 10 is gradually adjusted to be maximum, during the period, the temperature collected by the temperature sensor 4 is continuously and until the test is finished, if not, the case, the opening degree of the proportional valve 16 is maximum, the working frequency of the compressor 10 is already reached, the maximum, the test is automatically stopped, and the fuel cell engine test is carried out, so as to prevent overtemperature protection is carried out.
3) If the temperature collected by the second temperature sensor 26 is greater than the set value, the second proportional valve 19, the electronic expansion valve 20 and the compressor 10 are opened, meanwhile, the controller adjusts the opening degree of the second proportional valve 19 according to different test working conditions at the current moment so as to obtain different refrigerating capacities, at the moment, the controller again identifies whether the temperature collected by the second temperature sensor 26 is greater than the set value, if not, no action is carried out until the test is finished, if yes, whether the opening degree of the second proportional valve 19 reaches the maximum value is identified, if not, the opening degree of the second proportional valve 19 is gradually adjusted to the maximum value, during the period, the temperature collected by the second temperature sensor 26 is continuously and circularly detected whether the temperature collected by the second temperature sensor 26 is greater than the set value, if the opening degree of the second proportional valve 19 is adjusted to the maximum value, at the moment, whether the working frequency of the compressor 10 reaches the maximum value is identified, if not, the working frequency of the compressor 10 is gradually adjusted to the maximum value, during the period, whether the temperature collected by the second temperature sensor 26 is continuously and detected whether the temperature is greater than the set value, if not, the temperature reaches the test is not, if the temperature of the second proportional valve 19 reaches the maximum value, the engine is not, and the engine is automatically stopped, and the engine is protected.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
1. on the basis of the design of the existing water-cooling test bench of the fuel cell engine, the air-conditioning refrigerant refrigeration technology is combined in order, so that the temperature control device with independent and autonomous refrigeration capacity is produced.
2. In the testing process of the fuel cell engine, compared with the existing temperature control device, the energy transfer process of the cooling medium of the fuel cell engine is reduced from 2 times to 1 time, and the energy conversion efficiency is indirectly improved.
3. Use this temperature control device can make newly-built test place can possess the test ability fast, and the current forced air cooling temperature control device of contrast can effectively avoid the noise, and the heat spreads the problem in test space.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the embodiments, the practical application, or improvements made to the prior art, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The temperature control device for the fuel cell engine test is characterized by comprising a heat dissipation shell, an embedding mechanism of a fuel cell engine (1) to be tested, a first plate type heat exchanger (5), a second plate type heat exchanger (22), a first proportional valve (16), a second proportional valve (19) and refrigerant refrigeration equipment (29) arranged outside the heat dissipation shell, wherein the embedding mechanism is arranged in the heat dissipation shell; wherein the content of the first and second substances,
one path of the output end of the refrigerant refrigeration equipment (29) is connected with the input end of the first plate type heat exchanger (5) through a first proportional valve (16) and the first branch in sequence to form a refrigerant refrigeration main loop, and the other path of the output end of the refrigerant refrigeration equipment is connected with the input end of the second plate type heat exchanger (22) through a second proportional valve (19) and the first branch in sequence to form a refrigerant refrigeration auxiliary loop;
one path of a cooling liquid outlet of a fuel cell engine (1) to be tested on the placing mechanism is connected with a cooling liquid inlet of the first plate type heat exchanger (5) through a branch path two of the first plate type heat exchanger to form a heat exchange main loop, and the other path of the cooling liquid outlet is connected with a cooling liquid inlet of the second plate type heat exchanger (22) through a branch path two of the second plate type heat exchanger to form a heat exchange auxiliary loop.
2. The temperature control device for testing the fuel cell engine according to claim 1, wherein the refrigerant refrigerating device (29) is one of a compression refrigerating device, an absorption refrigerating device and a semiconductor refrigerating device; and also,
the refrigerant circulating in the refrigerant refrigeration equipment (29) is an environment-friendly refrigerant or a non-environment-friendly refrigerant.
3. The temperature control device for the fuel cell engine test according to claim 1 or 2, wherein the refrigerant cooling device (29) further includes a compressor (10) and a condenser (13) connected in this order.
4. The temperature control device for testing the fuel cell engine according to claim 3, further comprising a first expansion valve (17) and a second expansion valve (20) disposed in the heat dissipation case; wherein the content of the first and second substances,
a first expansion valve (17) provided between the first proportional valve (16) and the first plate heat exchanger (5);
and a second expansion valve (20) provided between the second proportional valve (19) and the second plate heat exchanger (22).
5. The temperature control device for testing the fuel cell engine as defined in claim 4, further comprising a first electrically operated valve (2), a second electrically operated valve (24), a third electrically operated valve (6) and a fourth electrically operated valve (27) which are arranged in the heat dissipation housing; wherein, the first and the second end of the pipe are connected with each other,
one path of a cooling liquid outlet of the fuel cell engine (1) to be tested is sequentially connected with a cooling liquid inlet through a first electric valve (2), a second branch of the first plate type heat exchanger (5) and a third electric valve (6), and the other path of the cooling liquid outlet is sequentially connected with the cooling liquid inlet through a second electric valve (24), a second branch of the second plate type heat exchanger (22) and a fourth electric valve (27).
6. The temperature control device for the fuel cell engine test as defined in claim 5, further comprising a controller for starting the primary refrigerant refrigeration loop or simultaneously starting the primary refrigerant refrigeration loop and the secondary refrigerant refrigeration loop to refrigerate and adjusting the refrigerating capacity of the refrigerant refrigeration equipment (29) according to the current test condition after starting according to the difference between the temperature of the discharged coolant of the fuel cell engine (1) to be tested and a set value; and also,
the first expansion valve (17) and the second expansion valve (20) both adopt electronic expansion valves;
the output end of the controller is respectively connected with the control ends of the first proportional valve (16), the second proportional valve (19), the first electric valve (2), the second electric valve (24), the third electric valve (6), the fourth electric valve (27), the first expansion valve (17), the second expansion valve (20), the compressor (10) and the condenser (13).
7. The temperature control device for fuel cell engine test as defined in any one of claims 4, 5, and 6, wherein the compressor (10) and the condenser (13) are provided outdoors, and the heat dissipating case is provided indoors.
8. The temperature control device for the fuel cell engine test according to claim 6, wherein the controller further comprises a data acquisition unit, a data processing and control unit connected in sequence.
9. The temperature control device for a fuel cell engine test according to claim 8, wherein the data acquisition unit further includes:
the first temperature sensor (4) is arranged on the inner wall of the pipeline at the output end of the first electric valve (2);
the second temperature sensor (26) is arranged on the inner wall of the output end pipeline of the second electric valve (24);
the third temperature sensor (8) is arranged on the inner wall of the input end pipeline of the compressor (10);
the fourth temperature sensor (11) is arranged on the inner wall of the pipeline at the output end of the compressor (10);
the fifth temperature sensor (14) is arranged on the inner wall of the pipeline at the output end of the condenser (13);
the sixth temperature sensor (7) is arranged on the inner wall of the first outlet pipeline of the branch of the first plate heat exchanger (5);
and the seventh temperature sensor (23) is arranged on the inner wall of the first outlet pipeline of the branch of the second plate heat exchanger (22).
10. The temperature control device for a fuel cell engine test according to claim 9, wherein the data acquisition unit further includes:
the first pressure sensor (3) is arranged on the inner wall of the pipeline at the output end of the first electric valve (2);
the second pressure sensor (25) is arranged on the inner wall of the pipeline at the output end of the second electric valve (24);
the third pressure sensor (9) is arranged on the inner wall of the input end pipeline of the compressor (10);
the fourth pressure sensor (12) is arranged on the inner wall of the pipeline at the output end of the compressor (10);
the fifth pressure sensor (15) is arranged on the inner wall of the pipeline at the output end of the condenser (13);
the sixth pressure sensor (18) is arranged on the inner wall of the inlet pipeline of the branch of the first plate heat exchanger (5);
and the seventh pressure sensor (21) is arranged on the inner wall of the branch-inlet pipeline of the second plate heat exchanger (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222371176.0U CN218039310U (en) | 2022-09-07 | 2022-09-07 | Temperature control device for fuel cell engine test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222371176.0U CN218039310U (en) | 2022-09-07 | 2022-09-07 | Temperature control device for fuel cell engine test |
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| Publication Number | Publication Date |
|---|---|
| CN218039310U true CN218039310U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222371176.0U Active CN218039310U (en) | 2022-09-07 | 2022-09-07 | Temperature control device for fuel cell engine test |
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| Country | Link |
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| CN (1) | CN218039310U (en) |
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2022
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