Decompression device

Abstract

The utility model relates to a decompression device and belongs to the technical field of fluid decompression. Comprising a first Tesla valve and a second Tesla valve which are sequentially connected in series between an inlet and an outlet through a pipeline; a first pipeline and / or a second pipeline are / is communicated between the inlet and the first Tesla valve, the first pipeline is connected with the first Tesla valve in parallel, and the second pipeline is connected with the first Tesla valve and the second Tesla valve in parallel; stop valves are arranged on the first pipeline and the second pipeline, and a pressure detection unit electrically connected with the stop valves is arranged at the outlet; the pressure detection unit detects the pressure of the fluid at the outlet and performs interlocking control on the stop valve according to the detection result so as to achieve the purpose of adjusting the pressure reduction ratio. The utility model has the advantages of no mechanical wear, low maintenance cost, stability, reliability, high temperature resistance, high pressure resistance and good medium quality tolerance, is more convenient for fluid containing impurities or thick texture to pass through, and is not easy to cause channel blockage.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid pressure reduction, and relates to a pressure reduction device. Background Art

[0002] At present, in the technical field of fluid pressure reduction, pressure reduction is mainly achieved by controlling the valve opening. After the outlet pressure of the pressure reducing valve is fed back into the valve body, there are moving parts such as regulating springs in the valve body to control the valve opening. These moving parts are mostly made of metal materials, which are prone to failure. Moreover, when the valve opening is low, if there are impurities in the medium, it is easy to be blocked, damaging the pressure reducing valve. And some moving parts are difficult to withstand high temperature and high pressure.

[0003] Therefore, how to design a pressure reduction device that can well adapt to the pressure change at the inlet of the pressure reduction device, is stable and reliable, resistant to high temperature and high pressure, and has good tolerance to the medium quality is an urgent problem to be solved at present. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a pressure reduction device that can adjust the pressure reduction ratio in sections, well adapt to the pressure change at the inlet of the pressure reduction device, and is resistant to high temperature and high pressure and has good tolerance to the medium quality.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pressure reduction device includes a first Tesla valve and a second Tesla valve serially arranged between an inlet and an outlet through a pipeline; a first pipeline and / or a second pipeline is / are communicated between the inlet and the first Tesla valve, the first pipeline is parallel to the first Tesla valve, and the second pipeline is parallel to the first Tesla valve and the second Tesla valve; after the fluid enters through the inlet, it flows through the first pipeline and / or the second pipeline respectively, and flows through the first Tesla valve for pressure reduction, and then converges at one end of the first Tesla valve far from the inlet and jointly flows through the second Tesla valve for pressure reduction.

[0007] Optionally, a cut-off valve is arranged on the first pipeline and the second pipeline.

[0008] Optionally, a pressure detection unit electrically connected to the cut-off valve is arranged at the outlet.

[0009] Optionally, the number of the cut-off valves is one less than the number of the Tesla valves.

[0010] Optionally, it further includes a third Tesla valve serially arranged between the second Tesla valve and the outlet.

[0011] Optionally, the first Tesla valve, the second Tesla valve, and the third Tesla valve are arranged side by side.

[0012] Optionally, the first Tesla valve, the second Tesla valve, and the third Tesla valve are stacked.

[0013] Optionally, the first Tesla valve, the second Tesla valve, and the third Tesla valve are horizontally dispersed.

[0014] Optionally, accommodation boxes are provided around the exteriors of the first Tesla valve, the second Tesla valve, and the third Tesla valve.

[0015] Optionally, the first Tesla valve, the second Tesla valve, and the third Tesla valve are each composed of a number of Tesla valve groups connected in series. Each Tesla valve group is a water droplet-shaped channel surrounded by a pipeline, and the conical ends of adjacent Tesla valve groups are connected to the side walls.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The device of the present utility model relies on the pressure-reducing characteristics of the Tesla valve. The pressure reduction ratio can be adjusted in sections through the cut-off valve, well adapting to the pressure changes at the inlet of the pressure reduction device. Other components except the cut-off valve do not contain moving parts, have no mechanical wear, low maintenance cost, are stable and reliable, can withstand high temperature and high pressure, have good tolerance to the medium quality, are more convenient for fluids containing impurities or with viscous texture to pass through, and are not easily blocked. The first Tesla valve, the second Tesla valve, and the third Tesla valve can be arranged side by side, stacked, or horizontally dispersed, which is convenient for reasonable layout according to the size of the on-site space and reduces the floor area.

[0018] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following specification. Description of the Drawings

[0019] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be described in detail and preferably below in conjunction with the drawings, where:

[0020] Figure 1 Schematic diagram of the structure with only the first pipeline in parallel in the pressure reduction device;

[0021] Figure 2 Schematic diagram of the structure with the first pipeline and the second pipeline in parallel at the same time in the pressure reduction device;

[0022] Figure 3 Schematic diagram of the structure with three Tesla valves connected in series in the pressure reduction device.

[0023] Reference numerals:

[0024] 1 First Tesla valve, 2 Second Tesla valve, 3 Third Tesla valve, 4 First pipeline, 5 Second pipeline, 6 Cut-off valve, 7 Pressure detection unit, 8 Accommodation box, 9 Tesla valve group. Specific embodiments

[0025] The following specific examples illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0026] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to the present utility model; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] Please refer to Figures 1 to 3 , which is a pressure reducing device, including a first Tesla valve 1 and a second Tesla valve 2 that are sequentially connected in series through pipelines between an inlet and an outlet; a first pipeline 4 and / or a second pipeline 5 are communicated between the inlet and the first Tesla valve 1. The first pipeline 4 is connected in parallel with the first Tesla valve 1, and the second pipeline 5 is connected in parallel with the first Tesla valve 1 and the second Tesla valve 2. Cut-off valves 6 are provided on both the first pipeline 4 and the second pipeline 5. A pressure detection unit 7 electrically connected to the cut-off valve 6 is provided at the outlet.

[0029] After the fluid enters through the inlet, it is divided into two paths. One path flows through the first pipeline 4, and the other path flows through the first Tesla valve 1 for pressure reduction. After converging at the end of the first Tesla valve 1 far from the inlet, they jointly flow through the second Tesla valve 2 for pressure reduction. The pressure detection unit 7 detects the pressure of the fluid at the outlet and interlocks and controls the cut-off valve 6 according to the detection result. When the outlet pressure rises, the automatic cut-off valve 6 is gradually closed according to the process requirements. When the outlet pressure drops, the automatic cut-off valve 6 is gradually opened according to the process requirements. When the cut-off valve 6 is fully closed, the fluid does not pass through the first pipeline 4 and the second pipeline 5. After entering from the inlet, it successively flows through the first Tesla valve 1, the second Tesla valve 2, the third Tesla valve 3, and the outlet, and is depressurized by the Tesla valve. When the cut-off valve 6 is fully opened, most of the fluid flows through the first pipeline 4 and the second pipeline 5, and a small amount flows through the first Tesla valve 1, the second Tesla valve 2, and the third Tesla valve 3 for pressure reduction, and then the outlet pressure will rise.

[0030] The number of cut-off valves 6 is one less than the number of Tesla valves.

[0031] The Tesla valve, also known as the Tesla vortex valve, realizes unidirectional conduction and control through the flow characteristics of the fluid in the pipeline. Due to its ingenious spatial structure design, the fluid behaves very differently when flowing forward and backward, and it can achieve unidirectional conduction of the air flow without relying on internal mechanical movement. It has a wide range of applications, especially suitable for high-viscosity liquids, corrosive liquids, and high-temperature and high-pressure environments, and has good tolerance to the medium.

[0032] The pressure reduction device further includes a third Tesla valve 3 connected in series between the second Tesla valve 2 and the outlet. The first Tesla valve 1, the second Tesla valve 2, and the third Tesla valve 3 are all composed of a number of Tesla valve groups 9 connected in series. Each Tesla valve group 9 is a water droplet-shaped channel surrounded by a pipeline, and the tapered ends of adjacent Tesla valve groups 9 are connected to the side walls. After the fluid enters from the tapered end, it is divided into two paths, flowing through the side wall and the arc section respectively and then entering the tapered end of the next Tesla valve group 9. Relying on the working principle of the Tesla valve, unidirectional conduction of the fluid can be achieved. Combining the control of the fluid pressure in the first pipeline 4 and the second pipeline 5, the step-by-step adjustment of the fluid pressure at the outlet of the overall device can be realized. The fluid entering from the inlet is divided into three paths. The first path flows through the first pipeline 4, the second path flows through the first Tesla valve 1 for pressure reduction. After converging at the end of the first Tesla valve 1 far from the inlet, they jointly flow through the second Tesla valve 2 for pressure reduction. The fluid depressurized by the second Tesla valve 2 converges with the fluid in the third path and then flows through the third Tesla valve 3 for pressure reduction. After the pressure reduction is completed, it flows out from the outlet.

[0033] The outsides of the first Tesla valve 1, the second Tesla valve 2, and the third Tesla valve 3 are all wrapped with accommodation boxes 8; and the first Tesla valve 1, the second Tesla valve 2, and the third Tesla valve 3 can be arranged side by side, stacked, or horizontally dispersed. This facilitates reasonable layout according to the size of the on-site space and reduces the floor area.

[0034] In practical applications, different numbers of Tesla valves and the setting positions of adjacent Tesla valves can be selected according to different pressure reduction ranges to adapt to the pressure change at the inlet of the pressure reduction device and ensure that the outlet pressure of the pressure reduction device meets the process requirements. It should be noted that the setting directions of several Tesla valves should be the same to simultaneously achieve the pressure reduction effect on the fluid and adjust the pressure reduction ratio.

[0035] The pressure reduction ratio refers to the ratio of the pressure before and after pressure reduction by a pressure reducing valve, which determines whether the pressure reduction device can achieve the required pressure drop. Too small a pressure reduction ratio will result in poor pressure reduction effect, while too large a pressure reduction ratio will cause the pressure reduction device to open excessively and leakage will occur. Therefore, it is necessary to determine and adjust the pressure reduction ratio of the pressure reduction device according to actual needs.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A pressure relief device, characterized in that: It includes a first Tesla valve (1) and a second Tesla valve (2) serially arranged in sequence through pipelines between an inlet and an outlet; a first pipeline (4) and / or a second pipeline (5) is / are communicated between the inlet and the first Tesla valve (1); when the first pipeline (4) is communicated, the first pipeline (4) is in parallel with the first Tesla valve (1); when the second pipeline (5) is communicated, the second pipeline (5) is in parallel with the first Tesla valve (1) and the second Tesla valve (2); after the fluid enters through the inlet, it respectively flows through the first pipeline (4) and / or the second pipeline (5), and flows through the first Tesla valve (1) for pressure reduction, and then converges at one end of the first Tesla valve (1) far from the inlet and then jointly flows through the second Tesla valve (2) for pressure reduction; both the first Tesla valve (1) and the second Tesla valve (2) are composed of a plurality of Tesla valve groups (9) connected in series, and each Tesla valve group (9) is a water droplet-shaped channel surrounded by a pipeline, wherein the tapered ends of adjacent Tesla valve groups (9) are communicated with the side walls; cut-off valves (6) are arranged on the first pipeline (4) and the second pipeline (5).

2. The decompression device according to claim 1, wherein: A pressure detection unit (7) electrically connected to the cut-off valve (6) is arranged at the outlet.

3. The decompression device according to claim 1, wherein: The number of the cut-off valves (6) is one less than the number of the Tesla valves.

4. The decompression device according to claim 1, characterized in that: It further includes a third Tesla valve (3) serially arranged between the second Tesla valve (2) and the outlet.

5. The decompression device according to claim 4, characterized in that: The first Tesla valve (1), the second Tesla valve (2), and the third Tesla valve (3) are arranged side by side.

6. The decompression device according to claim 4, characterized in that: The first Tesla valve (1), the second Tesla valve (2), and the third Tesla valve (3) are stacked.

7. The decompression device according to claim 4, wherein: The first Tesla valve (1), the second Tesla valve (2), and the third Tesla valve (3) are horizontally and dispersedly arranged.

8. The decompression device according to claim 4, characterized in that: Accommodating boxes (8) are wrapped outside the first Tesla valve (1), the second Tesla valve (2), and the third Tesla valve (3).

9. The decompression device according to claim 4, wherein: The third Tesla valve (3) is composed of a plurality of Tesla valve groups (9) connected in series, and each Tesla valve group (9) is a water droplet-shaped channel surrounded by a pipeline, wherein the tapered ends of adjacent Tesla valve groups (9) are communicated with the side walls.

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