CN211238399U - Fuel cell coolant temperature monitoring device - Google Patents
Fuel cell coolant temperature monitoring device Download PDFInfo
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- CN211238399U CN211238399U CN201922389621.4U CN201922389621U CN211238399U CN 211238399 U CN211238399 U CN 211238399U CN 201922389621 U CN201922389621 U CN 201922389621U CN 211238399 U CN211238399 U CN 211238399U
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- fuel cell
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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
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Abstract
The utility model belongs to the fuel cell field discloses a fuel cell coolant temperature monitoring device. The liquid inlet pipe is connected with a liquid supplementing control valve, the liquid supplementing control valve is connected with the lower part of a water tank, the bottom of the water tank is connected with circulating water, a circulating water pump is connected with an electric heater, the electric heater is connected with an adjusting valve, the other end of the adjusting valve is divided into two pipelines, one pipeline is connected with a temperature adjusting valve, the other pipeline is connected with a plate heat exchanger and then is connected with the temperature adjusting valve, the other end of the temperature adjusting valve is connected with a flowmeter, and the flowmeter is connected with a cooling; the fuel cell stack cooling liquid inlet is connected with the fuel cell, and the other end of the fuel cell is connected with the fuel cell stack cooling liquid outlet; and a pipe for connecting the flow meter with a cooling liquid inlet of the fuel cell stack is provided with a stack inlet temperature sensor, and a pipe for connecting the cooling liquid outlet of the fuel cell stack is provided with a stack outlet temperature sensor. The device has the characteristics of monitoring the temperature of the cooling liquid entering and exiting the fuel cell stack.
Description
Technical Field
The utility model belongs to the fuel cell field, the utility model relates to a fuel cell coolant temperature monitoring device.
Background
The heat generated when a hydrogen fuel cell stack (hereinafter referred to as a stack) works is accumulated, the stack is burnt out when the temperature is too high, and the stack needs to be cooled, but the working process of the fuel cell needs a certain reaction temperature, the fuel cell is difficult to normally react when the temperature is low, and the rapid temperature rise and the temperature reduction can cause the defects of unstable heat dissipation of the stack and unbalanced temperature in the stack. A water heat management system of the fuel cell is required to control the internal temperature of the fuel cell, take away excess heat and ensure the internal temperature of the fuel cell stack. Therefore, there is a need for a temperature monitoring device that can monitor the temperature of the coolant entering and exiting the fuel cell stack to maintain a relatively constant temperature differential.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the above-mentioned background art, provide a fuel cell coolant temperature monitoring device, the device has the characteristics of the coolant temperature of control business turn over fuel cell pile. The device can stabilize the temperature difference of the cooling liquid of the fuel cell entering and exiting the fuel cell stack.
The utility model provides a technical scheme that its technical problem adopted is: a fuel cell coolant temperature monitoring device comprises a liquid inlet pipe, a liquid supplementing control valve, a water tank, a liquid level meter group, a fuel cell, an electric heater and a circulating water pump; the liquid inlet pipe is connected with one end of a liquid supplementing control valve, the other end of the liquid supplementing control valve is connected with the lower part of a water tank through a pipeline, the bottom of the water tank is connected with one end of a circulating water pump through a pipeline, the other end of the circulating water pump is connected with an electric heater, the other end of the electric heater is connected with an adjusting valve, the other end of the adjusting valve is divided into two pipelines, one pipeline is directly connected with a temperature adjusting valve, the other pipeline is connected with a plate heat exchanger and then connected with the temperature adjusting valve, the other end of the temperature adjusting valve is connected with a; the cooling liquid inlet of the fuel cell stack is connected with the fuel cell, the other end of the fuel cell is connected with the cooling liquid outlet of the fuel cell stack, and the cooling liquid outlet of the fuel cell stack is connected with the upper part of the water tank; a pipe of the flowmeter, which is connected with a cooling liquid inlet of the fuel cell stack, is provided with a stack inlet temperature sensor, a cooling liquid outlet pipe of the fuel cell stack is provided with a stack outlet temperature sensor, one end of the other side of the plate heat exchanger is connected with an external cooling water outlet, and the other end of the plate heat exchanger is sequentially connected with a proportion regulating valve and an external cooling water inlet; a liquid level meter group is arranged on the outer side of the water tank, and a temperature monitoring group is arranged outside the electric heater; and the liquid supplementing control valve, the liquid level meter group, the regulating valve, the temperature regulating valve, the proportion regulating valve, the flow meter, the reactor inlet temperature sensor and the reactor outlet temperature sensor are respectively connected with the PLC system.
Furthermore, the electric heater is externally provided with a temperature monitoring group comprising a temperature sensor and a temperature instrument which are connected in sequence.
Furthermore, the liquid level meter group comprises more than two liquid level meters, wherein one liquid level meter is arranged at the upper part of the outer side of the water tank, and the other liquid level meter is arranged at the lower part of the outer side of the water tank;
further, a hole is formed in the center of the bottom of the water tank, and one end of the water tank is connected with a circulating water pump through a pipeline;
further, the proportional control valve controls the flow rate of the external cooling water.
The cooling liquid in the water tank provides power through a circulating water pump;
compared with the prior art, the utility model beneficial effect who has is:
the utility model provides a fuel cell cooling liquid temperature monitoring device, which can efficiently and reasonably control the temperature of a fuel cell stack to be kept at a stable difference value through the combined arrangement of a valve and an instrument; moreover, the combination of the valve and the instrument is adopted, so that the cost is saved; the fuel cell cooling liquid inlet and outlet connecting pipeline is provided with a stack inlet temperature sensor and a stack outlet temperature sensor; the device can more accurately determine the temperature of the fuel cell stack cooling liquid, and is a device for stabilizing the temperature difference of the fuel cell stack cooling liquid entering and exiting the fuel cell stack. And the design of the liquid level meter group outside the water tank can accurately determine the water level of the water tank, so that the monitoring is more accurate and the practical application is convenient.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a system diagram of a fuel cell coolant temperature monitoring device according to the present invention.
In the figure, 1, a liquid inlet pipe, 2, a liquid supplementing control valve, 3, a liquid level meter, 4, a water tank, 5, a circulating water pump, 6, a temperature monitoring group, 7, an electric heater, 8, an adjusting valve, 9, a plate heat exchanger, 10, a proportion adjusting valve, 11, a temperature adjusting valve, 12, a flow meter, 13, a stack inlet temperature sensor, 14, a stack outlet temperature sensor, 15, a PLC (programmable logic controller) system, 16, a fuel cell, 17, an external cooling water inlet and 18, and an external cooling water outlet are arranged.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments. In the embodiment, a liquid supplementing control valve, a liquid level meter group, a regulating valve, a temperature regulating valve, a proportion regulating valve, a flowmeter, a pile feeding temperature sensor and a pile discharging temperature sensor which are connected with a PLC system are not limited to be of a certain type, and the liquid supplementing control valve, the regulating valve, the temperature regulating valve and the proportion regulating valve can be valves which can receive control signals of the PLC system to realize opening and closing functions; the type of the liquid level meter is not limited, and the liquid level meter can realize liquid level measurement and feed back signals to a PLC system; the flowmeter is not limited in model, and can realize flow measurement and feed back signals to a PLC system; the type of the temperature sensor is not limited, and the temperature sensor can realize temperature measurement and feed back signals to a sensor with the PLC system function.
Example 1
A fuel cell coolant temperature monitoring device, as shown in figure 1, comprises a liquid inlet pipe 1, a liquid supplementing control valve 2, a water tank 4, a liquid level meter group, a fuel cell 16, an electric heater 7 and a circulating water pump 5; the liquid inlet pipe 1 is connected with one end of a liquid supplementing control valve 2, the other end of the liquid supplementing control valve 2 is connected with the lower part of a water tank 4 through a pipeline, the bottom of the water tank 4 is connected with one end of a circulating water pump 5 through a pipeline, the other end of the circulating water pump 5 is connected with an electric heater 7, the other end of the electric heater 7 is connected with an adjusting valve 8, the other end of the adjusting valve 8 is divided into two pipelines, one pipeline is directly connected with a temperature adjusting valve 11, the other pipeline is connected with a plate heat exchanger 9 and then connected with the temperature adjusting valve 11, the other end of the temperature adjusting valve 11 is connected with a flow meter 12; a cooling liquid inlet of the fuel cell 16 stack is connected with the fuel cell 16, the other end of the fuel cell 16 is connected with a cooling liquid outlet of the fuel cell 16 stack, and the cooling liquid outlet of the fuel cell 16 stack is connected with the upper part of the water tank 4; a stack inlet temperature sensor 13 is arranged on a pipeline of the flowmeter 12 connected with a cooling liquid inlet of a fuel cell 16 electric stack, a stack outlet temperature sensor 14 is arranged on a cooling liquid outlet pipeline of the fuel cell 16 electric stack, one end of the other side of the plate heat exchanger 9 is connected with an external cooling water outlet 18, and the other end of the other side of the plate heat exchanger is sequentially connected with a proportion regulating valve 10 and an external cooling water inlet 17; a liquid level meter group is arranged on the outer side of the water tank 4, and a temperature monitoring group is arranged outside the electric heater 7; and the liquid supplementing control valve 2, the liquid level meter group, the regulating valve 8, the temperature regulating valve 11, the proportion regulating valve 10, the flowmeter 12, the reactor inlet temperature sensor 13 and the reactor outlet temperature sensor 14 are respectively connected with a PLC (programmable logic controller) control system 15.
The outside of the electric heater 7 is provided with a temperature monitoring group which comprises a temperature sensor and a temperature instrument which are connected in sequence.
The liquid level meter group comprises more than two liquid level meters 3, wherein one liquid level meter 3 is arranged at the upper part of the outer side of the water tank 4, and the other liquid level meter 3 is arranged at the lower part of the outer side of the water tank 4;
the center of the bottom of the water tank 4 is provided with a hole which is connected with one end of a circulating water pump 5 through a pipeline;
the proportional control valve 10 controls the flow rate of the external cooling water.
The cooling liquid in the water tank 4 is powered by a circulating water pump 5;
the temperature regulating valve 11 is a three-way converging valve, and regulates the inlet temperature stability of the fuel cell stack by controlling the mixing ratio of the cold liquid and the hot liquid.
When the device works, a cooling liquid circulation pipeline is filled with deionized water, and the cooling liquid circulation pipeline, which is formed by sequentially connecting a water tank 4, a circulating water pump 5, an electric heater 7, an adjusting valve 8, a plate heat exchanger 9, a temperature control valve 11, a flowmeter 12 and a fuel cell 16, is filled with deionized water, and the plate heat exchanger 9 is communicated with external cooling water; because the pile during operation needs certain reaction temperature, before starting the pile with electric heater 7 with the inside deionized water heating of coolant liquid circulation pipeline to a certain settlement temperature, through circulating water pump 5, circulate deionized water, preheat the pile to the operating temperature that needs like this, electric heater 7 stop work, then start the pile, when the pile electricity generation, there is partly used heat production, make the inside temperature of pile rise, can influence the work efficiency of pile when the temperature rises to the uniform temperature and damage the pile even, just so need circulating cooling liquid to be connected through plate heat exchanger 9 and outside cooling water outlet 18 and take away the waste heat of pile, keep the inside temperature of pile can not the overtemperature. The proportional control valve 10 controls the flow of external cooling water to ensure that the heat taken away by the cooling water is stable and does not lower the temperature of the galvanic pile too much. Because the galvanic pile needs a stable temperature when working, the flow of the circulating cooling liquid is adjusted by the adjusting valve 8, the flowmeter 12 and the matching, the inlet temperature of the galvanic pile is adjusted by the temperature control valve 11, the plate heat exchanger 9 and the proportion adjusting valve 10 adjust the heat which takes away the waste heat, the internal temperature of the galvanic pile is stable, the inlet temperature of the galvanic pile is monitored by the pile inlet temperature sensor 13, the outlet temperature of the galvanic pile is monitored by the pile outlet temperature sensor 14, and the inlet temperature and the outlet temperature of the fuel cell galvanic pile are kept at a stable difference value.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. A fuel cell coolant temperature monitoring device is characterized by comprising a liquid inlet pipe (1), a liquid supplementing control valve (2), a water tank (4), a liquid level meter group, a fuel cell (16), an electric heater (7) and a circulating water pump (5); the liquid inlet pipe (1) is connected with one end of a liquid supplementing control valve (2), the other end of the liquid supplementing control valve (2) is connected with the lower part of a water tank (4) through a pipeline, the bottom of the water tank (4) is connected with one end of a circulating water pump (5) through a pipeline, the other end of the circulating water pump (5) is connected with an electric heater (7), the other end of the electric heater (7) is connected with an adjusting valve (8), the other end of the adjusting valve (8) is divided into two pipelines, one pipeline is directly connected with a temperature adjusting valve (11), the other pipeline is connected with a plate heat exchanger (9) and then is connected with the temperature adjusting valve (11), the other end of the temperature adjusting valve (11) is connected with a flow meter (12), and the other end of the; the inlet of the stack cooling liquid of the fuel cell (16) is connected with the fuel cell (16), the other end of the fuel cell (16) is connected with the outlet of the stack cooling liquid of the fuel cell (16), and the outlet of the stack cooling liquid of the fuel cell (16) is connected with the upper part of the water tank (4); a pipeline of the flow meter (12) connected with a cooling liquid inlet of a fuel cell (16) stack is provided with a stack inlet temperature sensor (13), a stack outlet temperature sensor (14) is arranged on a cooling liquid outlet pipeline of the fuel cell (16) stack, one end of the other side of the plate heat exchanger (9) is connected with an external cooling water outlet (18), and the other end of the other side of the plate heat exchanger is sequentially connected with a proportion regulating valve (10) and an external cooling water inlet (17); a liquid level meter group is arranged on the outer side of the water tank (4), and a temperature monitoring group is arranged outside the electric heater (7); and the liquid supplementing control valve (2), the liquid level meter group, the regulating valve (8), the temperature regulating valve (11), the proportion regulating valve (10), the flowmeter (12), the reactor entering temperature sensor (13) and the reactor outlet temperature sensor (14) are respectively connected with a PLC control system (15).
2. A fuel cell coolant temperature monitoring apparatus as claimed in claim 1, characterized in that a temperature monitoring group including a temperature sensor and a temperature meter connected in series is provided outside the electric heater (7).
3. A fuel cell coolant temperature monitoring apparatus as claimed in claim 1, characterized in that the liquid level gauge group includes two or more liquid level gauges (3), one of the liquid level gauges (3) is disposed at an upper portion of an outer side of the water tank (4), and the other liquid level gauge (3) is disposed at a lower portion of the outer side of the water tank (4).
4. The fuel cell coolant temperature monitoring apparatus according to claim 1, wherein a hole is formed in a central portion of the bottom of the water tank (4) and connected to one end of the circulating water pump (5) through a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922389621.4U CN211238399U (en) | 2019-12-26 | 2019-12-26 | Fuel cell coolant temperature monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922389621.4U CN211238399U (en) | 2019-12-26 | 2019-12-26 | Fuel cell coolant temperature monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211238399U true CN211238399U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922389621.4U Active CN211238399U (en) | 2019-12-26 | 2019-12-26 | Fuel cell coolant temperature monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211238399U (en) |
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2019
- 2019-12-26 CN CN201922389621.4U patent/CN211238399U/en active Active
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