Low-cost modularized one-way valve based on Tesla valve

Abstract

The utility model relates to the technical field of one-way valves, in particular to a low-cost modular one-way valve based on a Tesla valve, which comprises two single-module valve groups which are detachably connected in parallel, the two single-module valve groups are identical in structure, each single-module valve group comprises a bottom shell, a fluid channel groove is formed in the bottom shell, and a fluid channel is formed in the fluid channel groove. A first threaded groove is formed in one end of the bottom shell, a first threaded connecting pipe matched with the first threaded groove is fixedly installed at the other end of the bottom shell, and an upper shell is fixedly installed at the top of the bottom shell. According to the valve, a traditional spring element is abandoned, efficient one-way flowing under low pressure difference is achieved, meanwhile, the production cost is remarkably reduced, in addition, the structure is simple, a plurality of single-module valve sets can be connected in series according to needs for different systems to achieve the set effect, applicability is good, the whole device is convenient and efficient to disassemble and assemble due to threaded connection, and the service life of the device is prolonged. And an economical and reliable solution is provided for a low-pressure fluid control system such as a plate type solid fuel cell.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, and particularly relates to a low-cost modular check valve based on a Tesla valve. Background Technique

[0002] In a fluid control system, as a key component, a check valve is widely used in occasions where it is necessary to prevent fluid backflow or control fluid flow direction. With the continuous progress of technology, especially in the new energy field, such as the development of a plate-type solid fuel cell system, more stringent requirements are put forward for the performance of the check valve. The traditional check valve design mostly relies on a spring as the main reset component. This design performs well in high-pressure systems, but in a low-pressure environment, such as a plate-type solid fuel cell system, due to the excessive pressure drop during full opening, it seriously affects the overall efficiency and stability of the system, so it is no longer applicable.

[0003] On the other hand, check valves with a springless structure such as Tesla valves have attracted the attention of the industry due to their advantages such as low pressure drop and no mechanical wear. However, the types of Tesla valve products available on the market are limited at present, and due to factors such as complex manufacturing processes and high material costs, the product prices are relatively high, which limits their application in a wider range of fields. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a low-cost modular check valve based on a Tesla valve. This valve abandons the traditional spring element, realizes efficient one-way flow under a low pressure difference, and at the same time significantly reduces the production cost, providing an economical and reliable solution for low-pressure fluid control systems such as plate-type solid fuel cells.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A low-cost modular check valve based on a Tesla valve includes two single-module valve groups that are detachably connected in parallel. The two single-module valve groups have the same structure. The single-module valve group includes a bottom shell. A fluid channel groove is opened inside the bottom shell. A first threaded groove is opened at one end of the bottom shell. A first threaded connecting pipe adapted to the first threaded groove is fixedly installed at the other end of the bottom shell. An upper shell is fixedly installed on the top of the bottom shell. A second threaded connecting pipe adapted to the first threaded connecting pipe is fixedly installed at the same end of the upper shell as the first threaded connecting pipe. A second threaded groove adapted to the first threaded groove is also opened at the same end of the upper shell as the first threaded groove. The first threaded connecting pipe and the second threaded connecting pipe are spliced and combined into an external threaded connection end, and the first threaded groove and the second threaded groove are spliced and combined into an internal threaded connection end.

[0006] Preferably, the two parallel single-module valve groups are threadedly connected to each other.

[0007] Preferably, the upper shell is welded to the top of the bottom shell.

[0008] Preferably, the fluid channel grooves inside the two single-module valve groups are connected and communicated.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. By deeply studying the principle of fluid dynamics, combining advanced materials science and manufacturing processes, the present utility model has developed a low-cost one-way valve based on the Tesla valve applicable to low-pressure systems. This valve abandons the traditional spring element, realizes efficient one-way flow under low pressure difference, and significantly reduces the production cost. In addition, the structure of the present utility model is simple. For different systems, multiple single-module valve groups can be connected in series as needed to achieve the established effect, with good applicability. The threaded connection makes the overall disassembly and assembly of the device convenient and efficient, providing an economical and reliable solution for low-pressure fluid control systems such as plate-type solid fuel cells.

[0011] 2. Through innovative design, the present utility model eliminates the performance bottleneck of traditional one-way valves in low-pressure environments, and provides a one-way valve that can work stably under low pressure difference and has extremely small pressure drop.

[0012] 3. The present utility model realizes cost control and market popularity. By material selection, simplification of manufacturing processes and application of standardized production processes, the production cost is greatly reduced, thereby providing a one-way valve product with a more affordable price and easier to obtain in the market, effectively broadening its application scope in various low-pressure fluid control systems, and providing more efficient, economical and reliable fluid control solutions for multiple fields such as new energy, chemical industry, and water treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the connection structure of two single-module valve groups of the present utility model;

[0014] Figure 2 It is a schematic diagram of the assembled structure of two single-module valve groups of the present utility model;

[0015] Figure 3 It is a schematic diagram of the structure of a single-module valve group of the present utility model.

[0016] In the figure: 1. Single-module valve group; 101. Bottom shell; 102. Fluid channel groove; 103. First thread groove; 104. First threaded connecting pipe; 2. Upper shell; 201. Second threaded connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 therefore cannot be understood as a limitation to the present utility model.

[0019] In the present utility model, unless otherwise clearly specified and defined, 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 be 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", "below" and "beneath" 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.

[0020] Next, refer to Figures 1 - 3 to describe a low-cost modular check valve based on a Tesla valve provided by an embodiment of the present application.

[0021] A low-cost modular check valve based on a Tesla valve, comprising two single-module valve groups 1 connected in parallel and detachably. The two single-module valve groups 1 have the same structure. The single-module valve group 1 includes a bottom shell 101. A fluid channel groove 102 is formed inside the bottom shell 101. When the bottom shell 101 is processed, a 316L stainless steel blank is used for CNC machining to mill the groove. A first threaded groove 103 is formed at one end of the bottom shell 101. A first threaded connecting pipe 104 adapted to the first threaded groove 103 is fixedly installed at the other end of the bottom shell 101. When the first threaded groove 103 and the first threaded connecting pipe 104 are processed, a steel pipe is welded by diffusion welding at one end to turn an NPT external thread, and an NPT internal thread is turned at the other end. An upper shell 2 is fixedly installed on the top of the bottom shell 101. A second threaded connecting pipe 201 adapted to the first threaded connecting pipe 104 is fixedly installed at the same end of the upper shell 2 as the first threaded connecting pipe 104. A second threaded groove adapted to the first threaded groove 103 is also formed at the same end of the upper shell 2 as the first threaded groove 103. The second threaded groove is not shown in the figure. The first threaded connecting pipe 104 and the second threaded connecting pipe 201 are spliced and combined into an external threaded connection end. The first threaded groove 103 and the second threaded groove are spliced and combined into an internal threaded connection end.

[0022] Further, the two juxtaposed single-module valve groups 1 are threadedly connected to each other.

[0023] Further, the upper shell 2 is welded to the top of the bottom shell 101. The upper shell 2 cover plate with the same area as the bottom shell 101 is welded to the bottom shell 101 by diffusion welding.

[0024] In a further embodiment, the fluid channel grooves 102 inside the two single-module valve groups 1 are connected and communicated.

[0025] Combined with the above embodiments, the working principle of a low-cost modular check valve based on a Tesla valve of the present application is described: The hydrodynamic effect is utilized to achieve unidirectional conduction. When the fluid passes through the valve, its flow direction and speed will be affected by the shape of the internal channel of the valve. By precisely designing the shape and angle of the channel, the Tesla valve enables the fluid to pass smoothly during forward flow, while being subject to greater resistance during reverse flow, thereby achieving the effect of unidirectional conduction. At the same time, for different systems, multiple single-module valve groups 1 can be connected in series as needed to achieve the desired effect.

[0026] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above 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 recorded in this specification.

[0027] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A low-cost modular check valve based on a Tesla valve, comprising two single-module valve groups (1) that are detachably connected in parallel, characterized in that: The two single-module valve groups (1) have the same structure. The single-module valve group (1) includes a bottom shell (101). A fluid channel groove (102) is formed inside the bottom shell (101). A first threaded groove (103) is formed at one end of the bottom shell (101). A first threaded connecting pipe (104) adapted to the first threaded groove (103) is fixedly installed at the other end of the bottom shell (101). An upper shell (2) is fixedly installed on the top of the bottom shell (101). A second threaded connecting pipe (201) adapted to the first threaded connecting pipe (104) is fixedly installed at the same end of the upper shell (2) as the first threaded connecting pipe (104). A second threaded groove adapted to the first threaded groove (103) is also formed at the same end of the upper shell (2) as the first threaded groove (103). The first threaded connecting pipe (104) and the second threaded connecting pipe (201) are spliced and combined into an external threaded connection end. The first threaded groove (103) and the second threaded groove are spliced and combined into an internal threaded connection end.

2. The modular one-way valve based on a Tesla valve with low cost according to claim 1, characterized in that: The two juxtaposed single-module valve groups (1) are threadedly connected to each other.

3. A low-cost modular one-way valve based on a Tesla valve according to claim 1, characterized in that: The upper shell (2) is welded to the top of the bottom shell (101).

4. A low-cost modular one-way valve based on a Tesla valve according to claim 1, characterized in that: The fluid channel grooves (102) inside the two single-module valve groups (1) are communicated with each other.

Images