A rapid temperature control device

Abstract

The utility model relates to fuel cell stack test technical field, and disclose a kind of fast control gas temperature equipment, including main part, the top of main part is fixed with exhaust top, the main part includes test platform board, and the top of test platform board is fixed with enclosed cover around, the top of platform board is distributed with steam hole, and the bottom end of steam hole is connected with shunt pipe, and the end of shunt pipe is connected with central tube.The utility model is transported hot steam by the steam hole structure of dispersion arrangement in the test platform board two sides cooperation bottom shunt pipe, can be in shorter time, realize the uniformity discharge of hot steam, to fill enclosed cover fast heating, and when needing cooling, then can be through top exhaust top fast discharge top steam, while bottom cold exhaust pipe switching carries out the release of condensed gas, to realize the effect of fast cooling and remove a large amount of hot steam, overall structure temperature control effect is rapid, can provide controllable test environment for stack test process.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell stack testing technology, specifically a rapid temperature control device. Background Technology

[0002] Fuel cell systems are used as driving or auxiliary power sources in vehicles, yachts, aerospace, and underwater propulsion equipment. They convert the chemical energy of reactants (fuel and oxidant) into electrical and thermal energy through an electrochemical reaction process. Proton exchange membrane fuel cells (PEMFCs) are the most widely used. To ensure efficient operation of PEMFC systems in optimal environments, the supplied reaction gases need to be heated and humidified. Therefore, precise and rapid control of the temperature and humidity of the reaction gases is crucial. Humidity control also needs to prevent the formation of liquid water. In fuel cell stack testing, the humidification and temperature control of hydrogen and oxygen are key technologies to ensure the proton exchange membrane (PEM) is in its optimal hydration state, directly affecting stack performance and lifespan. Insufficient humidity leads to dehydration of the PEM, a decrease in ionic conductivity, resulting in performance degradation or even damage. Conversely, excessive humidity can cause flooding, hindering gas diffusion to the catalyst layer and reducing reaction efficiency.

[0003] In existing technologies, when fuel cells are tested using a fuel cell stack test platform, it is necessary to precisely control the temperature, humidity, and delivery pressure within the test platform. The mainstream method for traditional temperature and humidity control is to pre-humidify the reaction gas using an external humidifier, such as liquid water injection or bubbling, to form steam. This steam is then delivered into the platform in a single stream to provide heating and humidification. When temperature control is required, a liquid cooling or gas cooling system is needed.

[0004] While the aforementioned existing technologies have significant beneficial effects, they still have shortcomings:

[0005] In the aforementioned test platform, the temperature control method, which uses a single stream of steam to heat the platform and a gas-cooled / liquid-cooled system for cooling, is slow to respond when temperature needs to be adjusted. The large amount of steam inside the platform affects the normal temperature-humidity ratio of the fuel cell test platform. Furthermore, continuous testing often occurs during fuel cell stack testing. If the temperature response speed is slow, it will affect the fuel cell stack testing under different operating conditions. Therefore, a rapid temperature control device is proposed. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a rapid temperature control device. By delivering hot steam through a distribution pipe at the bottom of the test platform, uniform discharge of hot steam can be achieved in a short time. The top steam can also be quickly discharged through the top exhaust pipe, while the bottom cooling pipe switches to release condensate gas, thereby achieving rapid cooling and removal of a large amount of hot steam.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rapid temperature control device, comprising a main body, an exhaust top fixed to the top of the main body, a test platform plate, and a sealed cover fixed around the top surface of the test platform plate, steam outlets distributed on both sides of the top surface of the platform plate, and a diversion pipe connected to the bottom of the steam outlet, a central pipe connected to the end of the diversion pipe, and a temperature and humidity sensor fixed in the middle of the central pipe, a hot exhaust pipe and a cold exhaust pipe connected to both sides of one end of the central pipe, and both the hot exhaust pipe and the cold exhaust pipe are connected to a solenoid valve, a booster pump fixed to one end of the cold exhaust pipe, a cold air box fixed to the other end of the cold exhaust pipe, and a gas storage pipe connected to the rear end of the cold air box.

[0008] Preferably, the steam outlets are symmetrically distributed along both sides of the top surface of the test platform plate, and the test platform plate is fixedly connected to the exhaust top through a sealing cover.

[0009] Preferably, the test platform plate is connected to the split pipe through a steam inlet, and the split pipe is equidistantly distributed along both sides of the central pipe.

[0010] Preferably, the hot runner and the cold runner are connected to one end of the central tube, and the cold runner is connected to the central tube via a booster pump.

[0011] Preferably, the cold air box is connected to the radiator pipe and the gas storage pipe, and the cold air box is filled with condensate gas.

[0012] Preferably, the exhaust top includes a top cover, and an exhaust chimney is distributed at the center of the top surface of the top cover. A connecting cover is fixed to the bottom surface of the top cover, and an exhaust groove is opened inside the connecting cover. A fan frame is embedded in the bottom of the connecting cover, and fans are distributed on both sides inside the fan frame.

[0013] Preferably, the fan frame and the connecting cover are embedded and fixed to the top surface, and the connecting cover is connected to the exhaust chimney at the top of the top cover.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses a distributed steam outlet structure on both sides of the test platform plate, combined with a bottom distribution pipe to transport hot steam. This allows for uniform discharge of hot steam in a short time, thereby rapidly heating up the sealed hood. When cooling is required, the top steam can be quickly discharged through the top exhaust pipe, while the bottom cold exhaust pipe switches to release condensate gas, thus achieving rapid cooling and removal of a large amount of hot steam. The overall structure has a rapid temperature control effect and can provide a controllable test environment for the fuel cell stack testing process.

[0016] 2. This temperature control device, by setting a fan bracket at the top to assist in the exhaust function, can help to quickly expel the hot steam retained at the top during rapid cooling control in the test environment, thereby reducing the amount of steam retained and assisting in the rapid cooling of the entire test space.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of the hat of this utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the diversion tube of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the air conditioning unit of this utility model;

[0021] Figure 4 This is a schematic diagram of the explosion structure of the exhaust top of this utility model.

[0022] In the diagram: 1. Main body; 101. Test platform plate; 102. Enclosed cover; 103. Steam inlet; 104. Diverter pipe; 105. Central pipe; 106. Temperature and humidity sensor; 107. Heat pipe; 108. Cold pipe; 109. Solenoid valve; 110. Booster pump; 111. Cold air box; 112. Gas storage pipe; 2. Exhaust top; 201. Top cover; 202. Exhaust chimney; 203. Connecting cover; 204. Exhaust trough; 205. Fan frame; 206. Fan. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This embodiment of a rapid temperature control device includes a main body 1, with an exhaust top 2 fixed to the top of the main body 1. The main body 1 includes a test platform plate 101, and a sealing cover 102 is fixed around the top surface of the test platform plate 101. Steam outlets 103 are distributed on both sides of the top surface of the platform plate 101, and a diversion pipe 104 is connected to the bottom of the steam outlet 103. A central pipe 105 is connected to the end of the diversion pipe 104, and a temperature and humidity sensor 106 is fixed in the middle of the central pipe 105. A hot exhaust pipe 107 and a cold exhaust pipe 108 are connected to both sides of one end of the central pipe 105, and both the hot exhaust pipe 107 and the cold exhaust pipe 108 are connected to a solenoid valve 109. A booster pump 110 is fixed to one end of the cold exhaust pipe 108, and a cold air box 111 is fixed to the other end of the cold exhaust pipe 108. A gas storage pipe 112 is connected to the rear end of the cold air box 111.

[0025] like Figure 1-4 As shown, the temperature control device in this invention is similar to the existing temperature control structure of fuel cell stack test platforms. The main improvement of this invention is that by supplying hot steam through the diversion pipe 104 at the bottom of the test platform plate 101, uniform discharge of hot steam can be achieved in a short time. Top steam can also be quickly discharged through the top exhaust pipe 2, while the bottom cold exhaust pipe 108 switches to release condensate gas, thereby achieving rapid cooling and removal of a large amount of hot steam. The solenoid valve 109 and booster pump 110 in this invention are existing technologies. When using this temperature control device, the gas storage pipe 112 can be connected to an external condensate gas generator, while the hot exhaust pipe 107 is connected to high-temperature steam. During use, the solenoid valve 109 on the side of the hot exhaust pipe 107 can be opened, while the solenoid valve 109 on the side of the cold exhaust pipe 108 can be closed, allowing the hot steam to flow into the diversion pipes 104 on both sides along the central pipe 105, and then from the steam outlet 1... The steam is evenly discharged from the 03, thus rapidly diffusing and heating within the sealed enclosure 102. When a temperature reduction is needed, the solenoid valve 109 on the side of the hot exhaust pipe 107 is closed, and the solenoid valve 109 on the side of the cold exhaust pipe 108 is opened, allowing the condensate gas stored in the cold air box 111 to flow back into the sealed enclosure 102 via the central pipe 105 for cooling, achieving rapid ventilation and temperature control. This device uses a structure of dispersed steam outlets 103 on both sides of the test platform plate 101, combined with the bottom diversion pipe 104 to deliver hot steam, which can achieve uniform discharge of hot steam in a short time, thereby filling the sealed enclosure 102 and rapidly heating it. When a temperature reduction is needed, the top steam can be quickly discharged through the top exhaust 2, while the bottom cold exhaust pipe 108 switches to release condensate gas, thereby achieving rapid cooling and removal of a large amount of hot steam. The overall structure has a rapid temperature control effect, providing a controllable test environment for the fuel cell stack testing process.

[0026] like Figure 2-4As shown, the exhaust top 2 includes a top cover 201, and an exhaust chimney 202 is distributed at the center of the top surface of the top cover 201. A connecting cover 203 is fixed to the bottom surface of the top cover 201, and an exhaust groove 204 is opened inside the connecting cover 203. A fan frame 205 is embedded in the bottom of the connecting cover 203, and fans 206 are distributed on both sides inside the fan frame 205. When the enclosure 102 of this device needs to be cooled and vented, the fans 206 built into the fan frame 205 can generate an upward airflow to quickly exhaust the hot steam retained at the top of the enclosure 102 from the exhaust chimney 202, thus completing the auxiliary heat exhaust process. By setting the fan frame 205 at the top to assist in the exhaust function, this device can assist in the rapid exhaust of the hot steam retained at the top during rapid cooling control in the test environment, thereby reducing the amount of steam retained and assisting in the rapid cooling of the entire test space.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rapid temperature control device, comprising a main body (1), characterized in that, The top of the main body (1) is fixed with an exhaust top (2). The main body (1) includes a test platform plate (101), and a sealing cover (102) is fixed around the top surface of the test platform plate (101). Steam inlets (103) are distributed on both sides of the top surface of the platform plate (101), and a diversion pipe (104) is connected to the bottom end of the steam inlet (103). A central pipe (105) is connected to the end of the diversion pipe (104), and the middle part of the central pipe (105) is... A temperature and humidity sensor (106) is fixed. A heat pipe (107) and a cold pipe (108) are connected to both sides of one end of the central tube (105). Both the heat pipe (107) and the cold pipe (108) are connected to a solenoid valve (109). A booster pump (110) is fixed to one end of the cold pipe (108). A cold air box (111) is fixed to the other end of the cold pipe (108). An air storage pipe (112) is connected to the rear end of the cold air box (111).

2. The rapid temperature control device according to claim 1, characterized in that, The steam outlets (103) are symmetrically distributed on both sides of the top surface of the test platform plate (101), and the test platform plate (101) is fixedly connected to the exhaust top (2) through the sealing cover (102).

3. The rapid temperature control device according to claim 1, characterized in that, The test platform plate (101) is connected to the diversion pipe (104) through the steam inlet (103), and the diversion pipe (104) is distributed at equal intervals along both sides of the central pipe (105).

4. The rapid temperature control device according to claim 1, characterized in that, The hot runner (107) and cold runner (108) are connected to one end of the central tube (105), and the cold runner (108) is connected to the central tube (105) through a booster pump (110).

5. The rapid temperature control device according to claim 1, characterized in that, The cold air box (111) is connected to the cold air pipe (108) and the gas storage pipe (112), and the cold air box (111) is filled with condensed gas.

6. The rapid temperature control device according to claim 1, characterized in that, The exhaust top (2) includes a top cover (201), and an exhaust chimney (202) is distributed at the center of the top surface of the top cover (201). A connecting cover (203) is fixed to the bottom surface of the top cover (201), and an exhaust groove (204) is opened inside the connecting cover (203). A fan frame (205) is embedded in the bottom of the connecting cover (203), and fans (206) are distributed on both sides inside the fan frame (205).

7. A rapid temperature control device according to claim 6, characterized in that, The fan frame (205) and the connecting cover (203) are embedded and fixed to the top surface, and the connecting cover (203) is connected to the exhaust chimney (202) at the top of the top cover (201).

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