CN218867157U - Simulation use rack for fuel cell cooling liquid - Google Patents
Simulation use rack for fuel cell cooling liquid Download PDFInfo
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- CN218867157U CN218867157U CN202221455730.7U CN202221455730U CN218867157U CN 218867157 U CN218867157 U CN 218867157U CN 202221455730 U CN202221455730 U CN 202221455730U CN 218867157 U CN218867157 U CN 218867157U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model belongs to the technical field of the simulation rack, concretely relates to rack is used in simulation of fuel cell coolant liquid. The simulation use rack comprises a storage, a heater, a cold source, a condenser, a flowmeter, a first controller, a galvanic pile, a heat exchanger, a pump, a rotor flowmeter, an ion column, a second controller, a test piece group and an online monitoring instrument. The heater and the cold source generate high-low temperature circulating cooling liquid, and the ion column is used for removing anions and cations generated in the circulating test; the temperature sensor, the pressure sensor, the online pH meter and the online conductivity meter are used for monitoring the operating parameter conditions of the fuel cell cooling liquid in the high-low temperature cycle test process in real time and simulating the operating condition of the fuel cell cooling system to realize the comprehensive evaluation of the durability of the cooling liquid. The test piece group comprises typical metal and non-metal materials of the fuel cell system, and the corrosion resistance of the metal materials and the compatibility of the non-metal materials of the cooling liquid during actual use can be inspected by immersing the test piece group in the cooling liquid in the storage device.
Description
Technical Field
The utility model belongs to the technical field of the simulation rack, concretely relates to rack is used in simulation of fuel cell coolant liquid.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs) have the advantages of high energy density, high efficiency, low pollution, low noise, etc., and have been used in the fields of automobiles, ships, airplanes, emergency power supplies, etc. Temperature is an important factor affecting PEMFC performance and lifetime metrics. The fuel cell stack is at a high temperature (about 60 ℃) for a long time during normal operation, and a large amount of heat needs to be taken away by cooling liquid; in winter, the engine is at low temperature (about-40 ℃) when shut down, and needs cooling liquid to transfer heat when in cold start. Therefore, the coolant is critical to the proper operation of the fuel cell, known as the "blood" of the PEMFC. Particularly, under the rapid and large-range temperature alternation state, the PEMFC cooling liquid is easy to leak, the conductivity is increased, corrosion and the like, so that the galvanic pile is damaged. The high-low temperature simulation use investigation of the cooling liquid is an important basis for judging whether the cooling liquid meets the technical requirements of a fuel cell system, and has important significance for improving the reliability and the service life of the whole electric pile.
At present, the cooling liquid simulated use test method mainly refers to petrochemical standard SH/T0088 corrosion determination method for engine cooling liquid simulated use. National standards aiming at simulation use tests of the PEMFC cooling liquid do not exist at home and abroad, and related researches specially aiming at simulation use of the PEMFC cooling liquid do not exist. Because the PEMFC cooling liquid and the conventional engine cooling liquid have great difference in the aspects of conductivity, corrosion resistance and the like, the conventional engine cooling liquid simulated use test equipment can not meet the requirements of the fuel cell industry on the comprehensive evaluation of the PEMFC cooling liquid.
Chinese patent application CN 113237823A provides a high-low temperature cycle test system for proton exchange membrane fuel cells, which includes mutually independent low-temperature and high-temperature cycle impact structures, and can rapidly perform heating and cooling switching, thereby achieving rapid evaluation of durability of stack materials and key components. However, the patent application cannot realize online monitoring of the temperature, pressure, pH and conductivity of the cooling liquid, and cannot investigate the influence of the cooling liquid on metal and non-metal materials of the fuel cell system.
Through the analysis, the cooling liquid simulation use test method in the prior art cannot meet the requirement of the fuel cell on the PEMFC cooling liquid simulation test. The existing research method lacks the function of on-line monitoring of relevant parameters of the cooling liquid, so that the influence of the cooling liquid on metal and non-metal materials of a fuel cell system cannot be comprehensively evaluated.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a rack is used in simulation of fuel cell coolant liquid can overcome prior art and can not satisfy fuel cell to PEMFC coolant liquid simulation test's requirement, lacks the on-line monitoring function to the relevant parameter of coolant liquid to the defect of the influence of unable comprehensive aassessment coolant liquid to fuel cell system metal, non-metallic material.
The utility model discloses a realize through following technical scheme:
a simulated use rack of fuel cell coolant, the rack comprising a reservoir, a heater, a cold source, a condenser, a stack, and a pump; the output end of the storage, the galvanic pile, the pump and the input end of the storage are connected in sequence through pipelines to form a cooling liquid main circulation loop;
the cold source is positioned outside the storage and connected with the condenser inside the storage through a pipeline to form a cold supply loop;
a test strip group is placed in the storage device, the test strip group comprises metal and non-metal materials of the fuel cell system, and the test strip group is immersed in the cooling liquid.
Further, the rack also comprises a heat exchanger which is connected in parallel in a pipeline between the electric pile and the pump.
Further, the rack further comprises an ion column connected in parallel in the pipeline between the pump and the input end of the reservoir.
Furthermore, a flow meter and a valve are arranged on a pipeline between the output end of the storage device and the input end of the galvanic pile, a three-way valve A is arranged on a pipeline between the output end of the galvanic pile and the inlet of the heat exchanger, the inlet end of the three-way valve A is connected with the output end of the galvanic pile, the first outlet end is connected with the inlet of the heat exchanger, and the second outlet end is communicated with a pipeline between the heat exchanger and the pump through the pipeline A; the pipeline A is connected with the heat exchanger in parallel.
Furthermore, a three-way valve B is installed on a pipeline between the pump and the input end of the galvanic pile, the inlet end of the three-way valve B is connected with the outlet of the pump, the first outlet end of the three-way valve B is connected with the input end of the storage, the second outlet end of the three-way valve B is connected with the inlet end of the ion column, and a rotameter is installed on a pipeline between the three-way valve B and the ion column.
Further, a storage temperature sensor, an online pH meter and an online conductivity meter are mounted on the storage; a pile inlet temperature sensor and a pressure sensor are respectively arranged between the valve and the pipeline of the galvanic pile;
the rack further comprises a first controller and a second controller, wherein the first controller is used for acquiring data of the reactor entering temperature sensor and the reactor entering pressure sensor and controlling the heater, the cold source, the valve and the three-way valve A to be switched on and off according to the temperature and pressure data of the reactor entering temperature sensor and the reactor entering pressure sensor; the second controller is used for acquiring the temperature data of the temperature sensor of the storage device and controlling the on-line PH meter, the on-line conductivity meter and the three-way valve B to be switched on and off according to the temperature data of the temperature sensor of the storage device.
Furthermore, the ion column is provided with anion and cation mixed exchange resin.
Furthermore, the test strip group comprises a metal test strip group, a polar plate test strip, a rubber test strip and a plastic test strip.
Furthermore, a pipeline between the cold source and the condenser is a metal pipeline, and a heat insulation layer is additionally arranged on the metal pipeline; the rest pipelines of the rack are non-metal pipelines, and the non-metal pipelines are coated with heat insulation materials.
Furthermore, the metal pipeline is made of 316L stainless steel, and the non-metal pipeline is made of silicon rubber or fluorosilicone rubber.
Has the beneficial effects that:
(1) The utility model provides a fuel cell coolant liquid simulation uses rack, the rack can realize the simulation of the cold and hot circulation test environment of minus 45 ℃ to plus 95 ℃ under the ordinary pressure, can monitor real-time data such as coolant temperature, pressure, pH, conductivity on line simultaneously, can realize the comprehensive evaluation of coolant liquid durability; a condenser is placed in the storage device of the rack and connected with a cold source located outside the storage device through a pipeline, so that the cold exchange area can be increased, and the refrigeration efficiency is improved.
(2) The utility model provides a fuel cell coolant liquid simulation uses rack, the rack connects the heat exchanger in parallel in the pipeline between pile and pump to make the fuel cell coolant liquid realize rising fast, cooling at the in-process of simulation cold and hot circulation test environment.
(3) The utility model provides a fuel cell coolant liquid simulation uses rack, the rack includes heat exchanger and ion exchange system, and high low temperature analogue test environment more is close to fuel cell operating condition, can test investigation through test block group to the metal material anticorrosive of fuel cell system and non-metallic material compatibility simultaneously.
(4) The utility model provides a fuel cell coolant liquid simulation uses rack, the rack includes reservoir temperature sensor, advances to pile temperature sensor, pressure sensor, online PH appearance and online conductivity meter, can realize temperature, pressure, PH value and coolant liquid conductivity value among the real-time supervision fuel cell cooling system operation process, is convenient for in time the dynamic parameter situation who masters in the cold and hot circulation test process of fuel cell coolant liquid.
(5) The utility model provides a fuel cell coolant liquid simulation uses rack, the ionic column of rack is equipped with anion and cation mixed exchange resin, can adsorb free electric conduction ion in the coolant liquid to keep the coolant liquid to have low conductivity.
(6) The utility model provides a fuel cell cooling liquid simulation use rack, wherein the metal pipeline is made of 316L stainless steel, and a heat preservation layer is additionally arranged on the metal pipeline; the nonmetal pipelines are made of silicon rubber or fluorosilicone rubber, and the nonmetal pipelines are coated with heat insulation materials, so that the pipelines can be prevented from being corroded by cooling liquid, and the simulation temperature of the fuel cell cooling liquid, which cannot reach minus 45 ℃ to plus 95 ℃ because heat and cold are dissipated to air in the process of temperature rising and reducing, can be prevented.
Drawings
Fig. 1 is a schematic diagram of a system for simulating a rack for using a fuel cell coolant according to an embodiment of the present invention.
The system comprises a storage device 1, a heater 2, a cold source 3, a flowmeter 4, a first controller 5, a galvanic pile 6, a heat exchanger 7, a pump 8, a rotor flowmeter 9, an ion column 10, a second controller 11, a test piece group 12 and a condenser 13.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
A simulation of fuel cell coolant uses the rack, the rack includes reservoir 1, heater 2, cold source 3, condenser 13, flowmeter 4, first controller 5, galvanic pile 6, heat exchanger 7, pump 8, rotameter 9, ion column 10, second controller 11, test block group 12 and on-line monitoring instrument.
The on-line monitoring instrument comprises a storage temperature sensor T1, a reactor entering temperature sensor T2, a reactor entering pressure sensor P, an on-line pH meter and an on-line conductivity meter.
The storage 1 contains cooling liquid, the heater 2, the condenser 13 and the test strip group 12 are all located in the storage 1 and immersed in the cooling liquid, the test strip group 12 comprises typical metal and nonmetal materials of a fuel cell system and is used for observing the corrosion resistance and compatibility of the cooling liquid to metal and nonmetal in the actual use process, and the test strip group 12 in the embodiment is a metal test piece, a pole plate test piece, a rubber test piece and a plastic test piece; the condenser is connected with a cold source 3 positioned outside the storage 1 through a pipeline to form a closed loop. The reservoir 1 is provided with a reservoir temperature sensor (shown in the figure T1), an online PH meter (shown in the figure PH) and an online conductivity meter (shown in the figure G), wherein the reservoir temperature sensor is used for measuring the temperature of cooling liquid in the reservoir, the online PH meter is used for measuring the PH value of the cooling liquid, and the online conductivity meter is used for measuring the conductivity of the cooling liquid. The output end of the storage 1, the flow meter 4, the galvanic pile 6, the heat exchanger 7, the pump 8 and the input end of the storage 1 are sequentially connected through pipelines to form a main cooling liquid circulation loop; the flowmeter 4 is used for displaying the flow of the cooling liquid of the main circulation loop; an electromagnetic valve (shown in a figure V-1) is arranged in a pipeline between the flow meter 4 and the electric pile 6, and a pile entering temperature sensor (shown in a figure T2) and a pressure sensor (shown in a figure P) are respectively arranged between the electromagnetic valve and the pipeline of the electric pile 6 and are used for measuring the temperature and the pressure of cooling liquid before the cooling liquid enters the electric pile 6; the pipeline A is connected with the heat exchanger 7 in parallel through a second outlet end of a three-way electromagnetic valve A (shown in figure V-2), and the specific installation mode is as follows: the inlet end of the three-way electromagnetic valve A is connected with the galvanic pile 6, the first outlet end is connected with the inlet of the heat exchanger 7, and the second outlet end is communicated with a pipeline between the heat exchanger 7 and the pump 8 through a pipeline A; in this embodiment, the heat exchanger 7 is a heat exchange fan.
A branch where the rotameter 9 and the ion column 10 are located passes through a three-way electromagnetic valve B (shown as V-3), and a second outlet end is connected in parallel into a pipeline between the storage 1 and the pump 8; the method specifically comprises the following steps: the inlet of the three-way electromagnetic valve B is connected with the outlet of the pump 8, the first outlet end is connected with the input end of the storage 1, the second outlet end is connected with the inlet end of the rotameter 9, the outlet end of the rotameter 9 is connected with the inlet end of the ion column 10, and the outlet end of the ion column 10 is connected into a pipeline between the input ends of the pump 8 and the storage 1.
In the embodiment, the ion column 10 is filled with anion and cation mixed exchange resin with the filling amount of 0.5-2 liters, and is used for adsorbing free conductive ions in the cooling liquid so as to keep the low conductivity of the cooling liquid; the rotor flow meter 9 is used for displaying the flow of the cooling liquid in the secondary circulation loop;
the pipeline comprises a metal pipeline and a non-metal pipeline, wherein the metal pipeline is arranged between the cold source 3 and the condenser 13, and the rest pipelines (including the pipeline A) of the rack are non-metal pipelines. In this embodiment, the metal pipeline is made of 316L stainless steel, and the metal pipeline is additionally provided with an insulating layer; the non-metal pipeline is made of silicon rubber or fluorosilicone rubber, and is externally coated with a heat insulation material.
The material of the contact part of the pump 8 and the cooling liquid is 316L stainless steel or polytetrafluoroethylene material, so that the corrosion of the cooling liquid to the pump is prevented.
The first controller 5 is used for acquiring data of the reactor inlet temperature sensor T2 and the reactor inlet pressure sensor, and controlling the switch of the heater 2, the switch of the cold source 3, the switch of the electromagnetic valve and the switch of the three-way electromagnetic valve A according to the temperature and pressure data of the reactor inlet temperature sensor T2 and the reactor inlet pressure sensor; the second controller 11 is configured to collect temperature data of the reservoir temperature sensor, and control a switch of the online PH meter, a switch of the online conductivity meter, and a switch of the three-way electromagnetic valve B according to the temperature data of the reservoir temperature sensor. The temperature range of the temperature sensor of the storage device and the temperature sensor of the reactor is set to be-50-150 ℃, and the temperature precision is +/-0.1 ℃; the pressure sensor is set within a range of 50kPa to 300kPa.
The working principle is as follows: when the influence of the cooling liquid on metal and non-metal materials of the fuel cell system in the temperature rising and reducing processes is evaluated:
when the temperature is raised and started, the heater 2 works to provide heat, the cooling liquid in the storage 1 is heated, the pump 8 conveys the cooling liquid absorbing the heat from the storage 1 to the galvanic pile 6 through the flowmeter 4 and the electromagnetic valve V-1 by a pipeline, and then the cooling liquid returns to the input end of the storage 1 through the pipeline A and the pump 8; in the process of temperature rise starting, the electromagnetic valve V-1 is opened to adjust the pressure of the reactor, the first outlet end of the electromagnetic three-way valve V-2 connected with the heat exchanger 7 is closed, the second outlet end connected with the pipeline A is opened, the second outlet end of a branch of the three-way electromagnetic valve V-3 connected with the rotor flow meter 9 and the ion column 10 is closed, and the first outlet end connected with the input end of the storage 1 is opened.
In the temperature rising process, when the temperature of a reactor entering temperature sensor T2 reaches 90 ℃, the first controller 5 controls the switch of the heater 2 to be closed, the heater 2 stops working, after the temperature of cooling liquid is kept at 90 ℃ for circulating set time, the first controller 5 controls the switch of the three-way electromagnetic valve V-2 to open the first outlet end of the three-way electromagnetic valve V-2 connected with the heat exchanger 7 and close the second outlet end of the connecting pipeline A, after the temperature of the cooling liquid is quickly reduced to the room temperature through the heat exchanger 7, the first controller 5 controls the first outlet end of the three-way electromagnetic valve V-2 connected with the heat exchanger 7 to be closed, and the second outlet end of the connecting pipeline A is opened; and (3) the influence on metal and non-metal materials of the fuel cell system is realized in the process of heating the fuel cell cooling liquid to 90 ℃.
When the temperature reduction is started, the cold source 3 provides cold energy for the cooling liquid in the storage device 1 through the condenser 13, the cooling liquid in the storage device 1 is cooled, the pump 8 transmits the cooling liquid which absorbs the cold energy from the storage device 1 to the electric pile 6 through the pipeline, the flowmeter 4 and the electromagnetic valve V-1, and then the cooling liquid returns to the input end of the storage device 1 through the pipeline A and the pump 8; in the process of cooling and starting, the electromagnetic valve V-1 is opened to adjust the pressure of the reactor, the first outlet end of the electromagnetic three-way valve V-2 connected with the heat exchanger 7 is closed, the second outlet end connected with the pipeline A is opened, the second outlet end of a branch of the three-way electromagnetic valve V-3 connected with the rotor flow meter 9 and the ion column 10 is closed, and the first outlet end connected with the input end of the storage 1 is opened.
In the cooling process, when the temperature of a reactor inlet temperature sensor T2 reaches-40 ℃, the controller 1 controls the cooling source 3 to stop working, after the temperature of the cooling liquid is kept at-40 ℃ for circulating set time, the first controller 5 controls the on-off of the three-way electromagnetic valve V-2 to open the first outlet end of the three-way electromagnetic valve V-2 connected with the heat exchanger 7 and close the second outlet end of the connecting pipeline A, after the temperature of the cooling liquid is quickly reduced to the room temperature through the heat exchanger 7, the first controller 5 controls the first outlet end of the three-way electromagnetic valve V-2 connected with the heat exchanger 7 to close, and the second outlet end of the connecting pipeline A is open; the influence on metal and non-metal materials of a fuel cell system is completed in the process of cooling the fuel cell cooling liquid to-40 ℃.
In the temperature rising and reducing process, when the temperature of the temperature sensor T1 of the storage is between 5 ℃ and 45 ℃, the second controller 11 controls the on-line PH instrument and the on-line conductivity meter to work, otherwise, the on-line PH instrument and the on-line conductivity meter do not work, the measurement precision of the on-line PH instrument is 0.1PH, and the on-line PH instrument works at 5 ℃ to 45 ℃; the online conductivity meter has a measuring range of 0-200 mu S/cm and a precision of 0.01 mu S/cm, and is started to work at 5-45 ℃. In the cooling liquid heating and cooling circulation process, when the on-line conductivity meter detects that the conductivity of the cooling liquid is more than or equal to 10 muS/cm, the second controller 11 controls the on-off of the three-way electromagnetic valve V-3, the second outlet end of a branch where the three-way electromagnetic valve V-3 is connected with the rotor flow meter 9 and the ion column 10 is opened, the first outlet end connected with the input end of the storage 1 is closed, and the cooling liquid returns to the input end of the storage 1 through the flow meter 9 and the ion column 10 so as to maintain the low conductivity of the system; when the on-line conductivity meter detects that the conductivity of the cooling liquid is less than 2.0 muS/cm, the second controller 11 controls the on-off of the three-way electromagnetic valve V-3, the second outlet end of the branch where the three-way electromagnetic valve V-3 is connected with the rotor flow meter 9 and the ion column 10 is closed, the first outlet end of the branch where the input end of the storage 1 is connected is opened, and the branch where the flow meter 9 and the ion column 10 are located is closed; and the pH value and the conductivity value of the fuel cell cooling liquid in the processes of temperature rise and temperature reduction are monitored on line.
The effect of the cooling fluid on the metallic and non-metallic materials is determined by the weight loss of typical metallic and non-metallic test strips of the fuel cell system within the reservoir and the visual inspection of the condition of each strip surface.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A simulated use rack for a fuel cell coolant, characterized in that: the rack comprises a storage (1), a heater (2), a cold source (3), a condenser (13), an electric pile (6) and a pump (8); the output end of the storage (1), the galvanic pile (6), the pump (8) and the input end of the storage (1) are connected through pipelines in sequence to form a cooling liquid main circulation loop;
the cold source (3) is positioned outside the storage (1) and is connected with the condenser (13) inside the storage (1) through a pipeline to form a cold supply loop;
a test strip group (12) is placed in the storage device (1), the test strip group (12) comprises metal and non-metal materials of the fuel cell system, and the test strip group (12) is immersed in the cooling liquid.
2. A simulated use rack of fuel cell coolant as claimed in claim 1 wherein: the rack also comprises a heat exchanger (7), and the heat exchanger (7) is connected in parallel in a pipeline between the electric pile (6) and the pump (8).
3. A simulated use rack of fuel cell coolant as claimed in claim 1 wherein: the rack also comprises an ion column (10), and the ion column (10) is connected in parallel into a pipeline between the pump (8) and the input end of the storage (1).
4. A simulated use rack of fuel cell coolant as claimed in claim 2, wherein: a flow meter (4) and a valve are arranged on a pipeline between the output end of the storage (1) and the input end of the galvanic pile (6), a three-way valve A is arranged on a pipeline between the output end of the galvanic pile (6) and the inlet of the heat exchanger (7), the inlet end of the three-way valve A is connected with the output end of the galvanic pile (6), the first outlet end is connected with the inlet of the heat exchanger (7), and the second outlet end is communicated with a pipeline between the heat exchanger (7) and the pump (8) through the pipeline A; the pipeline A is connected with the heat exchanger (7) in parallel.
5. A simulated use rack of fuel cell coolant as claimed in claim 4 wherein: install three-way valve B on the pipeline between pump (8) and galvanic pile (6) input, three-way valve B's entry end and pump (8) exit linkage, first exit end and the input of accumulator (1) are connected, and the second exit end is connected with the entry end of ion column (10), installs rotameter (9) on the pipeline between three-way valve B and ion column (10).
6. A simulated use rack of fuel cell coolant as claimed in claim 5 wherein: a storage temperature sensor, an online PH meter and an online conductivity meter are arranged on the storage (1); a reactor inlet temperature sensor and a pressure sensor are respectively arranged between the valve and the pipeline of the galvanic pile (6);
the rack also comprises a first controller (5) and a second controller (11), wherein the first controller (5) is used for acquiring data of the stack entering temperature sensor and the stack entering pressure sensor and controlling the heater (2), the cold source (3), the valve and the three-way valve A to be switched on and off according to the temperature and pressure data of the stack entering temperature sensor and the stack entering pressure sensor; the second controller (11) is used for acquiring temperature data of the temperature sensor of the storage and controlling the on-line PH meter, the on-line conductivity meter and the three-way valve B to be switched on and off according to the temperature data of the temperature sensor of the storage.
7. A simulated use rack for fuel cell coolant as claimed in claim 5 or 6 wherein: the ion column (10) is filled with anion and cation mixed exchange resin.
8. A simulated use rack of fuel cell coolant as claimed in any of claims 1 to 6, wherein: the test piece group (12) comprises a metal test piece group, a polar plate test piece, a rubber test piece and a plastic test piece.
9. A simulated use rack of fuel cell coolant as claimed in any of claims 1 to 6, wherein: a metal pipeline is arranged between the cold source (3) and the condenser (13), and a heat insulation layer is additionally arranged on the metal pipeline; the rest pipelines of the rack are non-metal pipelines, and the non-metal pipelines are coated with heat insulation materials.
10. A simulated use rack of fuel cell coolant as claimed in claim 9 wherein: the metal pipeline is made of 316L stainless steel, and the nonmetal pipeline is made of silicon rubber or fluorosilicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221455730.7U CN218867157U (en) | 2022-06-10 | 2022-06-10 | Simulation use rack for fuel cell cooling liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221455730.7U CN218867157U (en) | 2022-06-10 | 2022-06-10 | Simulation use rack for fuel cell cooling liquid |
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| Publication Number | Publication Date |
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| CN218867157U true CN218867157U (en) | 2023-04-14 |
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| CN202221455730.7U Active CN218867157U (en) | 2022-06-10 | 2022-06-10 | Simulation use rack for fuel cell cooling liquid |
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| CN (1) | CN218867157U (en) |
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2022
- 2022-06-10 CN CN202221455730.7U patent/CN218867157U/en active Active
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