A pipe joint facilitating water replenishment for exhaust and a hydrogen fuel cell system

Abstract

The utility model relates to the technical field of pipeline engineering, specifically provides a pipeline joint and hydrogen fuel cell system beneficial to exhaust water replenishment. The pipeline joint, including tubular joint body, and the baffle that sets up from the one end of tubular joint body outward extension, can reduce the flow velocity of water flow through the baffle to the water flow in the pipeline, and then make the bubble in water flow more easily through tubular joint body and discharge, thereby solve the problem in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering technology, specifically to a pipeline joint that facilitates exhaust water replenishment and a hydrogen fuel cell system. Background Technology

[0002] During normal operation of a hydrogen fuel cell system, its cooling system typically requires water replenishment, such as... Figure 1 The diagram shows the current structure of a hydrogen fuel cell system. The hydrogen fuel cell system includes a stack 1 and a cooling system. The cooling system includes a water tank 21, a circulation pipe 22, and a water pump 23 installed in the circulation pipe 22. The two ends of the circulation pipe 22 are connected to the circulation water outlet and circulation water inlet of the stack 1, respectively. The circulation pipe 22 is also provided with a water inlet 221, so that the water tank 21 can flow into the circulation pipe 22 through the water inlet 221 for water replenishment.

[0003] In practical applications, the water tank 21 is usually connected to the water inlet 221 through the water supply pipe 211. Currently, there are two ways to connect the water supply pipe 211 to the water inlet 221: one is to directly insert the water supply pipe 211, which has a diameter slightly smaller than the inner diameter of the water inlet 221, into the water inlet 221, or to fit the water supply pipe 211, which has a diameter slightly larger than the outer diameter of the water inlet 221, around the water inlet 221.

[0004] However, it should be noted that when water circulates in the circulation pipe 22, air bubbles are usually generated. The presence of these air bubbles will have a certain impact on the fuel cell stack 1. However, the two connection methods of the water supply pipe 211 and the water supply port 221 are not conducive to the discharge of air bubbles. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a pipe joint and hydrogen fuel cell system that facilitates exhaust water replenishment, aiming to solve the problem of unfavorable pipe bubble discharge in related technologies to a certain extent.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This application provides a pipe joint that facilitates exhaust and water replenishment, including a tubular joint body and a baffle plate extending outward from one end of the tubular joint body.

[0008] Preferably, the tubular connector body has a boss connector at one end where the baffle is located.

[0009] Preferably, the other end of the tubular connector body is also provided with a boss connector.

[0010] Preferably, a limiting block is also provided at the position between the two ends of the tubular connector body.

[0011] Preferably, the tubular connector body is specifically a circular tubular connector body; and,

[0012] The cross-section of the baffle plate is an arc shape that matches the circular cross-section of the cylindrical connector body.

[0013] Preferably, the arc length of the arc is greater than 1 / 3 of the circumference of the circular cross-section of the tubular connector body, and less than 2 / 3 of the circumference of the circular cross-section.

[0014] Preferably, the tubular connector body is specifically a square tubular connector body; and,

[0015] The cross-section of the baffle plate has square corners that match the square cross-section of the square tubular connector body.

[0016] This application also provides a hydrogen fuel cell system, including a fuel cell stack, a circulation pipeline, and a water tank, wherein:

[0017] The two ends of the circulation pipe are respectively connected to the circulating water outlet and the circulating water inlet of the fuel cell stack;

[0018] The circulation pipeline is equipped with a water inlet;

[0019] The water tank is connected to a water inlet via a water supply pipe; and...

[0020] The water supply pipe and the water supply inlet are connected by the pipe joint provided in this embodiment.

[0021] Based on the above technical solution, compared with the prior art, the advantages of this utility model are as follows: the pipe joint provided in the embodiment of this application, which facilitates air release, includes a tubular joint body and a baffle plate extending outward from one end of the tubular joint body. The baffle plate can reduce the flow velocity of the water in the pipe by blocking the water flow, thereby making it easier for air bubbles in the water to be discharged through the tubular joint body, thus solving the problems in the prior art. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a hydrogen fuel cell system in the prior art;

[0023] Figure 2 A schematic diagram of the hydrogen fuel cell system provided for this application;

[0024] Figure 3 The structural schematic diagram of the pipe joint provided for this application;

[0025] Figure 4 A schematic cross-sectional view of the baffle plate in the pipe joint provided for this application;

[0026] Figure 5 The diagram provided in this application illustrates the connection method between the pipe joint and the water inlet in the circulation pipe.

[0027] In the above diagram: 1-fuel cell stack; 21-water tank; 22-circulation pipe; 23-water pump; 221-water inlet; 211-water inlet pipe; 3-tubular connector body; 4-baffle plate; 5-pipe connector; 6-fuel cell stack; 7-circulation pipe; 8-water tank; 71-water inlet; 81-water inlet pipe; 9-water pump. Detailed Implementation

[0028] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] As mentioned earlier, bubbles are easily generated when water circulates in the circulation pipe. The presence of these bubbles can have a certain impact on the fuel cell stack. However, the current connection method between the water supply pipe and the water supply port is not conducive to the discharge of bubbles.

[0032] In view of this, embodiments of this application provide a pipe joint and a hydrogen fuel cell system that facilitate exhaust water replenishment, which can be used to solve the problems in the prior art and can be combined with the present application. Figures 2-5 The structure of the pipe joint will be explained in detail as shown.

[0033] like Figure 2 The diagram shown is a structural schematic of the hydrogen fuel cell system provided in an embodiment of this application. This hydrogen fuel cell system is related to... Figure 1 Compared to the prior art hydrogen fuel cell system shown, this application also includes the fuel cell stack 6, circulation pipe 7, and water tank 8 found in prior art hydrogen fuel cell systems. The circulation pipe 7 is connected to the circulating water outlet and circulating water inlet of the fuel cell stack 6 at both ends, respectively. The circulation pipe 7 is equipped with a water inlet 71. The water tank 8 is connected to the water inlet 71 via the water inlet pipe 81. A water pump 9 can also be installed in the circulation pipe 7 to provide power for water circulation. These structures in the hydrogen fuel cell system provided in this application can be compared with... Figure 1 The hydrogen fuel cell system shown is the same as that in the prior art. The difference is that in the hydrogen fuel cell system provided in this application embodiment, the water supply pipe 81 and the water supply port 71 are connected by the pipe connector 5 provided in this application embodiment, which will be described in detail later.

[0034] like Figure 3 The diagram shown is a schematic diagram of the specific structure of the pipe joint 5 provided in the embodiment of this application. The pipe joint 5 has a tubular joint body 3 and a baffle plate 4 extending outward from one end of the tubular joint body 3. The function of the baffle plate 4 is to block the speed of the water flow to a certain extent, thereby reducing the water flow rate. When the water flow rate is reduced, the air bubbles in the water are more likely to flow to the pipe joint 5, and then flow into the water supply pipe 81, and finally enter the water tank 8, thereby realizing the discharge of air bubbles in the circulation pipe 7 into the water tank 8.

[0035] Therefore, the pipe joint for facilitating air release provided in this application embodiment includes a tubular joint body 3 and a baffle plate 4 extending outward from one end of the tubular joint body 3. The baffle plate 4 can reduce the flow velocity of the water in the pipe by blocking the water flow, thereby making it easier for air bubbles in the water to be discharged through the tubular joint body 3, thus solving the problems in the prior art.

[0036] It should be noted that, depending on actual needs, the water inlet 71 in the circulation pipe 7 can be circular, square, or other shapes. Correspondingly, the tubular connector body 3 can also be a circular tubular connector body 3 to fit the circular water inlet. In this case, the cross-section of the baffle 4 is an arc shape that matches the circular cross-section of the circular tubular connector body 3. Furthermore, if the baffle 4 is too wide or too narrow, its blocking effect on the water flow will not be optimal, thus affecting the air bubble removal effect. In practical applications, the arc length of the baffle 4 is greater than 1 / 3 and less than 2 / 3 of the circumference of the circular cross-section of the circular tubular connector body 3. For example, the arc length of the baffle 4 can be semi-circular.

[0037] Of course, the tubular connector body 3 can also be a square tubular connector body 3, thus adapting to a square water inlet. In this case, the cross-section of the baffle 4 can be a square corner that matches the square cross-section of the square tubular connector body 3, for example... Figure 4 The diagram shown is a cross-sectional view of the baffle 4 at the square corner.

[0038] In practical applications, in order to facilitate the secure installation of the pipe joint 5, the end of the pipe joint body 3 with the baffle plate 4 can also be provided with a boss joint 11. After the baffle plate 4 is inserted into the water inlet 71 of the circulation pipe 7, it can be snapped in place by the boss joint 11, thereby making the connection more secure.

[0039] In addition, since the two ends of the tubular connector body 3 in the pipe connector 5 are connected to the water inlet 71 and the water supply pipe 81 respectively, in order to make the connection between the tubular connector body 3 and the water supply pipe 81 more stable, the other end of the tubular connector body 3 (that is, the end without the baffle 4) can also be provided with a boss connector 11, so that the connection can be made more stable by inserting the boss connector 11 into the water supply pipe 81.

[0040] Of course, a limiting block 10 can also be provided between the two ends of the tubular connector body 3. For example, the limiting block 10 can be set in the middle of the tubular connector body 3, so that when the two ends of the tubular connector body 3 are inserted into the water inlet 71 and the water supply pipe 81 respectively, the limiting block 10 can be used to limit the insertion and prevent one end from being inserted too deeply, which would affect the stability of the other end.

[0041] like Figure 5The diagram shows the connection between the pipe joint 5 and the water inlet 74 in the circulation pipe 7. In this diagram, the baffle 4 in the pipe joint 5 is inserted into the circulation pipe 7 through the water inlet 71, and the insertion depth is limited by the limiting block 10. At this time, the water flow is blocked by the baffle 4 during the flow in the circulation pipe 7, which reduces the flow rate and makes it easier for air bubbles to flow into the tubular joint body 3. Finally, the air bubbles can flow into the water tank 8 through the water inlet 81, thus making it easier to discharge the air bubbles in the circulation pipe 7.

[0042] This utility model is not limited to the above-described embodiments. For those skilled in the art, various improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model. Contents not described in detail in this specification are prior art known to those skilled in the art.

Claims

1. A pipe joint facilitating water replenishment for exhaust gas, characterized by, It includes a tubular connector body (3) and a baffle plate (4) extending outward from one end of the tubular connector body (3).

2. The pipe joint of claim 1, wherein, The tubular connector body (3) has a boss connector (11) at one end where the baffle plate (4) is located.

3. The pipe joint of claim 2, wherein, The other end of the tubular connector body (3) is also provided with a boss connector (11).

4. The pipe joint of claim 1, wherein, The tubular connector body (3) is also provided with a limiting block (10) between its two ends.

5. The pipe joint of claim 1, wherein, The tubular connector body (3) is specifically a circular tubular connector body (3); and, The cross-section of the baffle (4) is an arc shape that matches the circular cross-section of the cylindrical connector body (3).

6. The pipe joint of claim 5, wherein, The arc length of the arc is greater than 1 / 3 of the circumference of the circular cross section of the cylindrical connector body (3) and less than 2 / 3 of the circumference of the circular cross section.

7. The pipe joint of claim 1, wherein, The tubular connector body (3) is specifically a square tubular connector body (3); and, The cross-section of the baffle (4) is a square corner that matches the square cross-section of the square tube connector body (3).

8. A hydrogen fuel cell system characterized by comprising: Includes fuel cell stack, circulation piping, and water tank, among which: The two ends of the circulation pipe are respectively connected to the circulating water outlet and the circulating water inlet of the fuel cell stack; The circulation pipeline is equipped with a water inlet; The water tank is connected to a water inlet via a water supply pipe; and... The water supply pipe and the water supply inlet are connected by a pipe joint as described in any one of claims 1 to 7.

Images