Gas-liquid separator

Abstract

The utility model relates to a gas-liquid separator. The gas-liquid separator comprises a shell and a guide plate; a containing cavity is formed in the shell, and a liquid inlet, a liquid outlet and an air outlet which are communicated with the containing cavity are formed in the shell; the flow guide plate is contained in the containing cavity and connected with the cavity wall of the containing cavity, and the flow guide plate is in a concentric spiral shape and spirally surrounds in the first direction so as to construct a plurality of concentric surrounding and communicating annular cavities, so that the to-be-separated matter flowing in through the liquid inlet passes through at least part of the annular cavities and flows out through the liquid outlet. The flow guide plate is in a snail type spiral shape and is provided with a plurality of concentric surrounding and communicated annular cavities, so that the flowing stroke of the to-be-separated object in the containing cavity can be increased, and compared with the mode that baffle plates and flow guide plates in a spiral rising mode are arranged in the prior art, the flow guide plate has the advantages that the separation efficiency is improved, and the separation efficiency is improved. According to the gas-liquid separator, the snail type spiral guide plate can reduce the size of the gas-liquid separator in the transverse direction and the longitudinal direction, and therefore the size of the gas-liquid separator can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separation, in particular to a gas-liquid separator. Background Art

[0002] Proton exchange membrane fuel cells usually supply excess hydrogen when working. In order to improve fuel utilization, a hydrogen circulation system needs to be installed to recover excess hydrogen. When hydrogen is discharged from the stack after electrochemical reaction, it will carry a certain amount of water (including liquid water and water vapor). Gas-liquid separators are often used for gas-liquid separation. In order to ensure that the flow path of the gas-containing liquid inside the gas-liquid separator is long enough, some parallel and staggered baffles are generally set in the gas-liquid separator. However, this will make the gas-liquid separator larger and occupy a larger space. Utility Model Content

[0003] Based on this, it is necessary to provide a gas-liquid separator to address the technical problems that the existing gas-liquid separators are large in size and occupy a large space.

[0004] A gas-liquid separator, comprising:

[0005] A shell, wherein a receiving cavity is configured in the shell, and the shell is provided with a liquid inlet, a liquid outlet and an air outlet communicated with the receiving cavity;

[0006] A guide plate is accommodated in the accommodating chamber and connected to the chamber wall of the accommodating chamber. The guide plate is in a concentric spiral shape and spirally surrounds a first direction to construct a plurality of concentrically surrounded and connected annular chambers, so that the to-be-separated substance flowing in through the liquid inlet passes through at least a portion of the annular chamber and flows out through the liquid outlet.

[0007] In one embodiment, the liquid outlet is communicated with the innermost annular cavity of the guide plate, and the liquid inlet is communicated with the outermost annular cavity of the guide plate.

[0008] In one of the embodiments, the liquid outlet is located at one end of the shell in the first direction, and the guide plate is connected to the shell on one side facing the liquid outlet, wherein the first direction forms an angle with the horizontal direction.

[0009] In one embodiment, the shell body includes a shell bottom cover, the side of the guide plate facing the liquid outlet is connected to the shell bottom cover, the shell bottom cover is protruded toward the side away from the accommodating cavity, and the size of the shell bottom cover in a direction perpendicular to the first direction is gradually reduced, and the liquid outlet is arranged at the end of the shell bottom cover away from the accommodating cavity.

[0010] In one of the embodiments, the air outlet is arranged at an end of the shell away from the liquid outlet.

[0011] In one of the embodiments, a preset gap is provided between the side of the guide plate facing the air outlet and the cavity wall of the accommodating cavity, so that each of the annular cavities is connected to the air outlet.

[0012] In one of the embodiments, in the first direction, the air outlet is aligned with the innermost annular cavity of the guide plate.

[0013] In one embodiment, the shell includes a shell top cover, the preset gap is located between the shell top cover and the guide plate, the shell top cover is protruded toward the side away from the accommodating cavity, and the size of the shell top cover in a direction perpendicular to the first direction is gradually reduced, and the air outlet is arranged at an end of the shell top cover away from the accommodating cavity.

[0014] In one of the embodiments, the gas-liquid separator further includes a liquid inlet pipe, which is connected to the shell and communicates with the liquid inlet port. In the first direction, an extension direction of the liquid inlet pipe coincides with a tangent direction of the shell.

[0015] In one embodiment, in the first direction, the distance between the liquid inlet and the gas outlet is greater than the distance between the liquid inlet and the liquid outlet.

[0016] Beneficial effects:

[0017] The gas-liquid separator provided by the embodiment of the utility model includes a shell and a guide plate; a accommodating chamber is constructed in the shell, and a liquid inlet, a liquid outlet and an air outlet connected to the accommodating chamber are provided on the shell; the guide plate is accommodated in the accommodating chamber and connected to the chamber wall of the accommodating chamber, and the guide plate is concentrically spiral and spirally wound around a first direction to construct a plurality of concentrically wound and connected annular chambers, so that the to-be-separated substance flowing in through the liquid inlet passes through at least part of the annular chamber and flows out through the liquid outlet or the air outlet. The guide plate in the present application is in the shape of a snail spiral and is constructed with a plurality of concentrically surrounding and connected annular cavities, thereby increasing the flow stroke of the object to be separated in the containing cavity, so that it has sufficient time for gas-liquid separation to ensure the gas-liquid separation effect. Compared with the method of setting parallel and staggered baffles in the prior art, the guide plate in the present application is in the shape of a snail spiral and can reduce the lateral size of the gas-liquid separator. Compared with the spiral ascending guide plate in the prior art, the guide plate in the present application is in the shape of a snail spiral and can reduce the longitudinal size of the gas-liquid separator, thereby reducing the volume of the gas-liquid separator and the space occupied. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A cross-sectional view of a gas-liquid separator provided in one embodiment of the utility model Figure 1 .

[0019] Figure 2 This is the front view of the gas-liquid separator provided by an embodiment of the present utility model.

[0020] Figure 3 This is the cross-section of the gas-liquid separator provided by an embodiment of the present utility model Figure 2 。

[0021] Reference numerals in the drawings:

[0022] 100 - housing; 110 - main body of the housing; 120 - bottom cover of the housing; 130 - top cover of the housing; 140 - accommodation cavity; 150 - liquid inlet; 160 - liquid outlet; 170 - gas outlet; 200 - deflector; 210 - annular cavity; 220 - preset gap; 300 - liquid inlet pipe. Detailed implementation manners

[0023] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0029] Refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 is a sectional view of the gas-liquid separator provided by an embodiment of the present utility model Figure 1 . Figure 2 is a schematic diagram of the gas-liquid separator provided by an embodiment of the present utility model. Figure 3 is a sectional view of the gas-liquid separator provided by an embodiment of the present utility model Figure 2An embodiment of the present utility model provides a gas-liquid separator, which includes a housing 100 and a flow guide plate 200; a receiving cavity 140 is formed inside the housing 100, and a liquid inlet 150, a liquid outlet 160 and a gas outlet 170 communicating with the receiving cavity 140 are provided on the housing 100; the flow guide plate 200 is accommodated in the receiving cavity 140 and is connected to the cavity wall of the receiving cavity 140. The flow guide plate 200 is in a concentric spiral shape and spirally surrounds in a first direction to form a plurality of concentrically surrounded and communicating annular cavities 210, so that the material to be separated flowing in through the liquid inlet 150 passes through at least part of the annular cavities 210 and flows out through the liquid outlet 160 or the gas outlet 170.

[0030] Specifically, in the present application, the flow guide plate 200 is in a snail-shaped spiral, and a plurality of concentrically surrounded and communicating annular cavities 210 are formed, so that the flow path of the material to be separated in the receiving cavity 140 can be increased, and it has sufficient time for gas-liquid separation to ensure the gas-liquid separation effect. Among them, compared with the prior art of setting parallel and staggered baffle plates, the snail-shaped spiral flow guide plate 200 in the present application can reduce the lateral size of the gas-liquid separator, and compared with the spiral rising flow guide plate 200 in the prior art, the snail-shaped spiral flow guide plate 200 in the present application can reduce the longitudinal size of the gas-liquid separator, and thus can reduce the volume of the gas-liquid separator and the occupied space.

[0031] It should be noted that the material to be separated includes liquid water and gas. When the material to be separated flows in the annular cavity 210, the gas will gradually escape from the material to be separated, so that the gas flows out through the gas outlet 170 and the liquid flows out through the liquid outlet 160.

[0032] Refer to Figure 2 and Figure 3 , in one embodiment, the liquid outlet 160 communicates with the innermost annular cavity 210 of the flow guide plate 200, and the liquid inlet 150 communicates with the outermost annular cavity 210 of the flow guide plate 200, so that the flow path of the material to be separated flowing out of the liquid outlet 160 through the liquid inlet 150 can be extended as much as possible, so that it has sufficient gas-liquid separation time and improves the gas-liquid separation effect.

[0033] Refer to Figure 1 , Figure 2 and Figure 3 , in one embodiment, the liquid outlet 160 is located at one end of the housing 100 in the first direction, and one side of the flow guide plate 200 facing the liquid outlet 160 is connected to the housing 100, where the first direction forms an angle with the horizontal direction.

[0034] Specifically, the liquid outlet 160 is located at the lower end of the shell 100, and the side of the guide plate 200 facing the liquid outlet 160 is connected to the shell 100, so that each annular cavity 210 is connected from the inside to the outside at the end close to the liquid outlet 160, and the liquid outlet 160 is only connected to the innermost annular cavity 210, so that the to-be-separated substance entering through the liquid inlet 150 rotates around the first direction along the side of the guide plate 200 close to the liquid outlet 160 under the action of gravity, so as to be discharged from the outermost annular cavity 210. 10 flows from outside to inside along the corresponding annular cavity 210 to the innermost annular cavity 210, so that the object to be separated has the largest flow stroke. At the same time, the liquid water separated from the object to be separated can hit the guide plate 200 under the action of centrifugal force, and adhere to the guide plate 200 under the action of the tension of the guide plate 200. After that, the liquid water continues to gather to form large droplets, and flows along the wall of the guide plate 200 under the action of gravity to the bottom of the accommodating cavity 140, and flows out through the liquid outlet 160. Preferably, the first direction is parallel to the vertical direction.

[0035] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, the shell 100 includes a shell bottom cover 120, and the side of the guide plate 200 facing the liquid outlet 160 is connected to the shell bottom cover 120, the shell bottom cover 120 is protruded toward the side away from the accommodating cavity 140, and the size of the shell bottom cover 120 in a direction perpendicular to the first direction is gradually reduced, and the liquid outlet 160 is arranged at the end of the shell bottom cover 120 away from the accommodating cavity 140.

[0036] Specifically, the shell bottom cover 120 is conical, so that the droplets flowing into the shell bottom cover 120 through the guide plate 200 rotate around the first direction along the inclined shell bottom cover 120 under the action of gravity to flow to the lowermost end of the shell bottom cover 120, thereby facilitating the droplets to flow out from the liquid outlet 160.

[0037] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, the gas outlet 170 is arranged at the end of the shell 100 away from the liquid outlet 160, that is, at the upper end of the shell 100, so that the separated gas can escape upward through the gas outlet 170, and under the action of gravity, it can also prevent the incompletely separated gas-liquid material from escaping from the gas outlet 170, affecting the gas-liquid separation effect, thereby improving the reliability of the gas-liquid separator.

[0038] See also Figure 1 , Figure 2 and Figure 3In one embodiment, a preset gap 220 is provided between the guide plate 200 and the wall of the accommodating cavity 140 on the side facing the gas outlet 170, so that each annular cavity 210 is connected with the gas outlet 170, so that the gas separated in each annular cavity 210 can flow out directly from the gas outlet 170 through the preset gap 220, that is, the flow path of the gas is shortened, and secondary condensation of the gas in the annular cavity 210 is avoided.

[0039] See also Figure 1 , Figure 2 and Figure 3 In one of the embodiments, in a first direction, the gas outlet 170 is aligned with the innermost annular cavity 210 of the guide plate 200, that is, the gas outlet 170 is located directly above the innermost annular cavity 210, thereby reducing the flow distance of the gas flowing out from above each annular cavity 210, avoiding secondary condensation, and facilitating the outflow of the gas separated in each annular cavity 210.

[0040] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, the shell 100 includes a shell top cover 130, a preset gap 220 is located between the shell top cover 130 and the guide plate 200, the shell top cover 130 is convex to the side away from the accommodating cavity 140, and the size of the shell top cover 130 in a direction perpendicular to the first direction is gradually reduced, and the air outlet 170 is arranged at one end of the shell top cover 130 away from the accommodating cavity 140.

[0041] Specifically, the shell top cover 130 is conical and can play a guiding role, so that the gas flowing out through the annular cavity 210 can be quickly discharged along the shell top cover 130 through the gas outlet 170 .

[0042] Furthermore, the shell 100 also includes a shell body 110, and the shell bottom cover 120 and the shell top cover 130 are respectively connected to the two ends of the shell body 110 along the first direction to construct a cavity wall of the accommodating cavity 140, and the outermost side of the guide plate 200 is connected to the shell body 110.

[0043] See also Figure 1 , Figure 2 and Figure 3 In one embodiment, the gas-liquid separator also includes a liquid inlet pipe 300, which is connected to the shell 100, and the liquid inlet pipe 300 is communicated with the liquid inlet port 150. In a first direction, the extension direction of the liquid inlet pipe 300 coincides with the tangent direction of the shell 100.

[0044] Specifically, the liquid inlet pipe 300 is connected to the shell body 110. In a first direction, the extension direction of the liquid inlet pipe 300 coincides with the tangent direction of the shell body 110.

[0045] As a result, the substance to be separated entering through the liquid inlet 150 enters the outermost annular cavity 210 along the extending direction of the liquid inlet pipe 300 and rotates in the first direction, that is, it can reduce the volume of the substance to be separated flowing back into the gap between the deflector 200 and the cavity wall of the housing body 110, ensure the flow path of the liquid to be separated, and improve the reliability of the gas-liquid separator.

[0046] Refer to Figure 1 and Figure 3 , in one embodiment, in the first direction, the distance between the liquid inlet 150 and the gas outlet 170 is greater than the distance between the liquid inlet 150 and the liquid outlet 160. As a result, the substance to be separated entering through the liquid inlet 150 needs to travel the distance between the liquid inlet 150 and the gas outlet 170 in the first direction before it can flow out from the gas outlet 170, so as to avoid the substance to be separated that is not completely separated from flowing out through the gas outlet 170 and affecting the gas-liquid separation effect.

[0047] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A gas-liquid separator, characterized in that: The gas-liquid separator comprises: A shell, wherein a receiving cavity is configured in the shell, and the shell is provided with a liquid inlet, a liquid outlet and an air outlet communicated with the receiving cavity; A guide plate is accommodated in the accommodating chamber and connected to the chamber wall of the accommodating chamber. The guide plate is in a concentric spiral shape and spirally surrounds a first direction to construct a plurality of concentrically surrounded and connected annular chambers, so that the to-be-separated substance flowing in through the liquid inlet passes through at least a portion of the annular chamber and flows out through the liquid outlet.

2. The gas-liquid separator according to claim 1, characterized in that: The liquid outlet is communicated with the annular cavity at the innermost side of the guide plate, and the liquid inlet is communicated with the annular cavity at the outermost side of the guide plate.

3. The gas-liquid separator according to claim 2, characterized in that: The liquid outlet is located at one end of the shell in the first direction, and the guide plate is connected to the shell on one side facing the liquid outlet, wherein the first direction forms an angle with the horizontal direction.

4. The gas-liquid separator according to claim 3, characterized in that: The shell body includes a shell bottom cover, the side of the guide plate facing the liquid outlet is connected to the shell bottom cover, the shell bottom cover is protruded toward the side away from the accommodating cavity, and the size of the shell bottom cover in a direction perpendicular to the first direction is gradually reduced, and the liquid outlet is arranged at the end of the shell bottom cover away from the accommodating cavity.

5. The gas-liquid separator according to claim 3, characterized in that: The air outlet is arranged at an end of the shell away from the liquid outlet.

6. The gas-liquid separator according to claim 5, characterized in that: A preset gap is provided between the side of the guide plate facing the air outlet and the cavity wall of the accommodating cavity, so that each of the annular cavities is communicated with the air outlet.

7. The gas-liquid separator according to claim 6, characterized in that: In the first direction, the air outlet is aligned with the innermost annular cavity of the guide plate.

8. The gas-liquid separator according to claim 7, characterized in that: The shell body includes a shell top cover, the preset gap is located between the shell top cover and the guide plate, the shell top cover is protruded toward the side away from the accommodating cavity, and the size of the shell top cover in a direction perpendicular to the first direction is gradually reduced, and the air outlet is arranged at one end of the shell top cover away from the accommodating cavity.

9. The gas-liquid separator according to any one of claims 1 to 8, characterized in that: The gas-liquid separator further comprises a liquid inlet pipe, which is connected to the shell and communicates with the liquid inlet. In the first direction, an extension direction of the liquid inlet pipe coincides with a tangent direction of the shell.

10. The gas-liquid separator according to any one of claims 1 to 8, characterized in that: In the first direction, the distance between the liquid inlet and the gas outlet is greater than the distance between the liquid inlet and the liquid outlet.

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