Cooling pipeline valve structure

Abstract

The utility model relates to the technical field of electric pile maintenance, and discloses a cooling pipeline valve structure which is suitable for a cooling liquid pipeline, the cooling liquid pipeline is connected with an electric pile connector pipeline through a hoop, the cooling liquid pipeline is provided with a branch pipe, a valve body is arranged in the branch pipe, an airflow channel is formed in the valve body, and an air bag is bonded in the airflow channel. The air bag is hung in the cooling liquid pipeline, the valve body comprises a supporting base, the supporting base and the branch pipe are in interference fit, and an upper shell is fixedly installed on the supporting base. According to the cooling pipeline valve structure, the simple valve body is integrated at the branch pipe 11 on the cooling liquid pipeline, and before a galvanic pile is maintained, gas is introduced into the gas flow channel, so that the gas bag is expanded due to gas filling, and the expanded gas bag is attached to the inner wall of the cooling liquid pipeline, so that a path of a cooling medium flowing into a galvanic pile interface pipeline from the cooling liquid pipeline is blocked, and the service life of the galvanic pile is prolonged. And the cooling medium does not need to be discharged, so that the energy waste and pollution are solved with lower cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery stack maintenance, and in particular to a cooling pipeline valve structure. Background Art

[0002] The outstanding advantages of hydrogen fuel energy are that it is pollution-free, highly efficient, and recyclable. It is widely used in the commercial vehicle field, including light trucks, heavy trucks, buses, passenger cars, and ships.

[0003] In the application of hydrogen fuel energy, cars and various types of construction machinery equipped with hydrogen fuel cells will inevitably fail during operation. When the stack needs to be repaired, it needs to be removed from the vehicle. Since there are many interfaces in the thermal management pipeline, it is difficult and costly to add manual or solenoid switch valves to the pipeline interfaces. Therefore, when repairing the stack, the thermal management pipeline is usually disassembled and the coolant is discharged. After the repair is completed, the pipeline is reconnected and the coolant is introduced. The previously discharged coolant will cause energy waste and pollution. Utility Model Content

[0004] The purpose of the utility model is to provide a cooling pipeline valve structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling pipeline valve structure, suitable for a coolant pipeline, the coolant pipeline is connected to the stack interface pipeline through a clamp, the coolant pipeline is provided with a branch pipe, a valve body is provided in the branch pipe, an air flow channel is opened in the valve body, an air bag is bonded in the air flow channel, and the air bag is suspended in the coolant pipeline.

[0006] Preferably, the valve body comprises a support base, and the support base is interference fitted with the branch pipe.

[0007] Preferably, an upper shell is fixedly mounted on the support base, and a sealing ring is arranged between the support base and the upper shell.

[0008] Preferably, the upper shell and the branch pipe are interference fitted.

[0009] Preferably, a boss is provided on the top of the upper shell.

[0010] Preferably, the upper shell is threadedly connected with a plug cover.

[0011] Preferably, a sealing gasket is arranged between the upper shell and the blocking cover.

[0012] Preferably, the airbag is made of high-elastic rubber.

[0013] Preferably, an adhesive is provided on the contact surface between the air bag and the support base.

[0014] Preferably, a sealing ring is provided between the air bag and the supporting base.

[0015] The cooling pipeline valve structure has the following beneficial effects:

[0016] The cooling pipeline valve structure integrates a simple valve body at the branch pipe 11 on the coolant pipeline. Before repairing the fuel cell stack, gas is introduced into the air flow channel to make the air bag expand due to the filling of gas. The expanded air bag fits with the inner wall of the coolant pipeline, thereby blocking the path of the cooling medium flowing from the coolant pipeline to the fuel cell stack interface pipeline. There is no need to discharge the cooling medium, thus solving the energy waste and pollution at a lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of a cooling pipeline valve structure provided in an embodiment of the present application;

[0018] Figure 2 A cross-sectional view of a cooling pipeline valve structure provided in an embodiment of the present application;

[0019] Figure 3 This is a cross-sectional view of the cooling line valve structure when the air bag is inflated.

[0020] In the figure: 1. Coolant pipeline; 11. Branch pipe; 2. Stack interface pipeline; 3. Support base; 4. Upper shell; 5. Plug cover; 6. Sealing ring; 7. Air bag. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 2 As shown, the utility model provides a cooling pipeline valve structure, which is suitable for a coolant pipeline 1, the coolant pipeline 1 is connected to a stack interface pipeline 2 through a clamp, and the stack interface pipeline 2 is arranged in a hydrogen fuel cell stack, wherein the coolant pipeline 1 is a non-metallic hose and the stack interface pipeline 2 is a metal pipe.

[0023] Specifically, the coolant pipeline 1 is provided with a branch pipe 11 , a valve body is provided in the branch pipe 11 , an air flow channel is provided in the valve body, an air bag 7 made of high elastic rubber is bonded in the air flow channel, and the air bag 7 is suspended in the coolant pipeline 1 .

[0024] Furthermore, the valve body includes a support base 3, which is interference fitted with the branch pipe 11, and the support base 3 is fixedly installed with an upper shell 4. A sealing ring 6 is arranged between the support base 3 and the upper shell 4 to prevent the gas in the airflow channel from flowing into the coolant pipe 1 from the contact gap between the support base 3 and the upper shell 4. The upper shell 4 is interference fitted with the branch pipe 11, and a boss is arranged on the top of the upper shell 4 to prevent the valve body from falling into the coolant pipe 1 during assembly. The upper shell 4 is threadedly connected with a plug cover 5, and the plug cover 5 and the upper shell 4 are in an annular step-like contact, and a sealing gasket is arranged between the upper shell 4 and the plug cover 5 to prevent the infiltration of external gas when the plug cover 5 blocks the air bag 7.

[0025] Among them, an adhesive is provided on the contact surface between the airbag 7 and the support base 3, so that the airbag 7 can still be fixed in the support base 3 when being filled with gas. A sealing ring 6 is also provided between the airbag 7 and the support base 3 to prevent the gas in the airflow channel from entering the coolant pipe 1 along the gap between the airbag 7 and the support base 3, thereby avoiding the closed environment formed between the airflow channel and the airbag 7 from being destroyed, so that the airbag 7 after being filled with gas can better fit the inner wall of the coolant pipe 1.

[0026] In this embodiment, a simple valve body is integrated at the branch pipe 11 on the coolant pipeline 1. The valve body is composed of a support base 3, an upper shell 4, a plugging cover 5, a sealing ring 6 and an air bag 7. Its structure is simpler and easier to assemble than the diaphragm valve, butterfly valve and other valves in the prior art. Before repairing the battery stack, first open the plugging cover 5. Figure 3 As shown, an air pump is used to inflate the air flow channel so that the air bag 7 expands due to the filling of gas. The expanded air bag 7 fits against the inner wall of the coolant pipe 1, thereby blocking the path of the cooling medium flowing from the coolant pipe 1 into the stack interface pipe 2. The coolant pipe 1 and the stack interface pipe 2 are removed, and the stack is repaired. After the repair is completed, the coolant pipe 1 and the stack interface pipe 2 are connected, the air in the air bag 7 is discharged, and the blocking cover 5 is covered.

[0027] In the present application, there is no need to discharge the cooling medium. The cooling medium can be intercepted by inflating the air bag 7, and the cooling medium can be circulated by deflating the air bag 7, thereby solving the energy (cooling medium) waste and pollution problems at a lower cost.

[0028] Working principle: Before repairing the fuel cell stack, first open the plugging cover 5, use an air pump to inflate the air flow channel, so that the air bag 7 expands due to the filling of gas, and the expanded air bag 7 fits against the inner wall of the coolant pipe 1, thereby blocking the path of the cooling medium flowing from the coolant pipe 1 to the fuel cell stack interface pipe 2, remove the coolant pipe 1 and the fuel cell stack interface pipe 2, and repair the fuel cell stack. After the repair is completed, connect the coolant pipe 1 and the fuel cell stack interface pipe 2, discharge the air in the air bag 7, and cover the plugging cover 5.

[0029] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling pipeline valve structure, suitable for a coolant pipeline, wherein the coolant pipeline is connected to a stack interface pipeline through a clamp, and is characterized in that: The coolant pipeline is provided with a branch pipe, a valve body is provided in the branch pipe, an air flow channel is provided in the valve body, and an air bag is bonded in the air flow channel; The air bag is suspended in the coolant pipe.

2. The valve structure according to claim 1, characterized in that: The valve body comprises a support base, and the support base is interference fitted with the branch pipe.

3. The valve structure according to claim 2, characterized in that: An upper shell is fixedly mounted on the support base, and a sealing ring is arranged between the support base and the upper shell.

4. The valve structure according to claim 3, characterized in that: The upper shell and the branch pipe are interference fitted.

5. The valve structure according to claim 4, characterized in that: A boss is arranged on the top of the upper shell.

6. The valve structure according to claim 4, characterized in that: The upper shell is threadedly connected with a plugging cover.

7. The valve structure according to claim 6, characterized in that: A sealing gasket is arranged between the upper shell and the blocking cover.

8. The valve structure according to claim 2, characterized in that: The air bag is made of high-elastic rubber.

9. The valve structure according to claim 8, characterized in that: Adhesive is provided on the contact surface between the air bag and the support base.

10. The valve structure according to claim 9, characterized in that: A sealing ring is arranged between the air bag and the supporting base.

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