A two-stage Venturi channel hydrophobic device

Abstract

This utility model discloses a steam trap with a two-stage Venturi channel, comprising a steam trap assembly. The steam trap assembly includes a valve body, an inlet channel within the valve body, a first Venturi channel threadedly connected to the inlet channel, a top channel on the top surface of the valve body, a second Venturi channel threadedly connected to the top channel, an outlet channel within the valve body, a water delivery channel connecting the top channel and the outlet channel, a first plug sealing the top channel, and a second plug sealing the end of the inlet channel. The first Venturi channel includes a constriction section pipe. This utility model, through the steam trap assembly, forms a two-stage Venturi channel structure. The first-stage Venturi channel achieves temperature and pressure reduction of the steam condensate, while the second-stage Venturi channel achieves steam-water separation, reducing the condensate flow velocity and pressure within the valve body and pipes, reducing erosion of the valve body and pipes, improving safety, and extending service life.

Description

Technical Field

[0001] This utility model relates to the field of valve equipment technology, specifically to a two-stage Venturi channel steam trap. Background Technology

[0002] Steam traps, also known as condensate drains or automatic drainers, are used in both steam and gas systems. They are installed at the end of steam-heated pipes to continuously drain condensate from the pipes. Venturi-structured steam traps are characterized by low steam leakage and durability.

[0003] However, when Venturi steam traps are used in high-temperature and high-pressure steam systems, the excessive pressure difference leads to excessively high flow velocity at the Venturi nozzle orifice, causing the flash steam pressure in the nozzle orifice expansion section to rise, resulting in cavitation and potentially eroding the valve body, downstream pipes, and elbows, thus reducing service life. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a steam trap with a two-stage Venturi channel. Through the set steam trap components, a two-stage Venturi channel structure is formed. The first-stage Venturi channel realizes the de-temperature and de-pressure reduction of steam condensate, and the second-stage Venturi channel realizes the steam-water separation function, which reduces the flow rate and pressure of condensate in the valve body and pipeline, reduces the scouring of the valve body and pipeline, improves the safety factor, and extends the service life.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: a hydrophobic device with a two-stage Venturi channel, comprising: A steam trap assembly includes a valve body, an inlet channel formed in the valve body, a first venturi channel threaded to the inlet channel, a top channel formed on the top surface of the valve body, a second venturi channel threaded to the top channel, an outlet channel formed in the valve body, a water delivery channel connecting the top channel and the outlet channel, a first plug sealing the top channel, and a second plug sealing the end of the inlet channel. The first Venturi channel includes a contraction section pipe, a throat pipe communicating with the contraction section pipe, and an expansion pipe communicating with the throat pipe.

[0006] As a preferred embodiment of the hydrophobic device with a two-stage Venturi channel described in this utility model, the second Venturi channel has the same structure as the first Venturi channel, and the second Venturi channel has a contraction section pipe, a throat pipe and an expansion pipe with the same structure.

[0007] As a preferred embodiment of the two-stage Venturi channel condensate drainer of this utility model, it further includes a connecting assembly, which includes a first threaded cylinder fixed on the contraction section pipe and a second threaded cylinder fixed on the expansion pipe.

[0008] As a preferred embodiment of the two-stage Venturi channel drainer described in this utility model, the connecting assembly further includes a first external thread formed at one end of the throat pipe and a second external thread formed at the other end of the throat pipe.

[0009] In a preferred embodiment of the two-stage Venturi channel condensate drain of this utility model, the first external thread is connected to the first threaded cylinder, and the second external thread is connected to the second threaded cylinder.

[0010] In a preferred embodiment of the two-stage Venturi channel steam trap described in this utility model, condensate containing steam enters through the contraction section pipe and exits through the expansion pipe.

[0011] In a preferred embodiment of the two-stage Venturi channel condensate drainer described in this utility model, the first Venturi channel and the second Venturi channel are alloy steel pipes.

[0012] Compared with the prior art, the advantages of this utility model are: 1. By setting up a condensate trap assembly, a two-stage Venturi channel structure is formed. The first-stage Venturi channel realizes the de-temperature and de-pressure reduction of steam condensate, and the second-stage Venturi channel realizes the steam-water separation function, reducing the condensate flow rate and pressure in the valve body and pipeline, reducing the scouring of the valve body and pipeline, improving the safety factor, and extending the service life.

[0013] Second, the venturi channels can be flexibly assembled through the set connection components to adapt to different needs, and the entire structure can be freely disassembled to allow for the individual replacement of parts and pipes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the first Venturi channel of this utility model; Figure 3This is a structural diagram of the connecting component of this utility model.

[0015] In the diagram: 11. Valve body; 12. Inlet channel; 13. First Venturi channel; 14. Top channel; 15. Second Venturi channel; 16. Water delivery channel; 17. Outlet channel; 18. First plug; 19. Second plug; 21. Contraction section pipe; 22. Throat pipe; 23. Expansion pipe; 31. First threaded cylinder; 32. Second threaded cylinder; 33. First external thread; 34. Second external thread. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] This utility model provides a steam trap with a two-stage Venturi channel. Through the set steam trap components, a two-stage Venturi channel structure is formed. The first-stage Venturi channel realizes the de-temperature and de-pressure of steam condensate, and the second-stage Venturi channel realizes the steam-water separation function, which reduces the flow rate and pressure of condensate in the valve body and pipeline, reduces the scouring of the valve body and pipeline, improves the safety factor, and extends the service life.

[0021] Figures 1-3 The diagram shown is an overall structural schematic of an embodiment of a hydrophobic device with a two-stage Venturi channel according to this invention. Please refer to [link / reference]. Figures 1-3 The main structure of this embodiment includes: a hydrophobic assembly.

[0022] The steam trap assembly is used under high temperature and high pressure steam. Specifically, the steam trap assembly includes a valve body 11, an inlet channel 12 opened in the valve body 11, a first venturi channel 13 threaded to the inlet channel 12, a top channel 14 opened on the top surface of the valve body 11, a second venturi channel 15 threaded to the top channel 14, an outlet channel 17 opened in the valve body 11, a water delivery channel 16 connecting the top channel 14 and the outlet channel 17, a first plug 18 sealing the top channel 14, and a second plug 19 sealing the end of the inlet channel 12. The first venturi channel 13 includes a contraction section pipe 21, a throat pipe 22 connected to the contraction section pipe 21, and an expansion pipe 23 connected to the throat pipe 22. In practical use, condensate carrying steam enters the first Venturi channel 13. The condensate first enters the contraction section pipe 21. Due to the reduced pipe diameter, the flow area gradually decreases, and the flow velocity increases significantly, converting some of the fluid's pressure energy into kinetic energy, thus initially reducing the pressure. Then, the condensate carrying steam enters the throat pipe 22, where its speed stabilizes. From the throat pipe 22, the condensate carries steam into the expansion pipe 23. After entering the expansion pipe 23, the flow area gradually increases, and the flow velocity slowly decreases. During this process, some kinetic energy is converted back into pressure energy, but the final outlet pressure will be lower than the pressure before entering the channel. Simultaneously, due to the pressure reduction, the fluid temperature also decreases, achieving the goal of cooling and pressure reduction. When the steam-water mixture processed by the first Venturi channel 13 enters the second Venturi channel 15, it first flows through the contraction section: the flow area decreases, the mixture velocity increases rapidly, and the pressure further decreases. At this point, due to the density difference between the steam and condensate (the density of steam is much smaller than that of condensate), preliminary stratification begins to occur in the high-speed flow field. The denser condensate adheres closer to the channel wall due to inertial forces, while the less dense steam is closer to the center of the channel.

[0023] When the mixture enters the throat: the flow rate reaches its maximum value, the pressure drops to its minimum, and the "shear force" generated by the high-speed flow field further breaks the stability of the steam-water mixture, causing the tiny condensed water droplets to aggregate and grow larger, while the steam remains in a gaseous state. Upon entering the expansion section: the flow area increases, the flow velocity gradually decreases, and the pressure slowly rises. At this point, the large condensate particles after polymerization are more likely to adhere to the channel wall due to gravity and centrifugal force, and flow along the wall towards the drain outlet; while the less dense steam, due to insufficient kinetic energy after the flow velocity decreases, is difficult to follow the condensate flow and is eventually blocked upstream of the channel, thus achieving steam-water separation by "blocking steam and draining water". This reduces the condensate flow velocity and pressure in the valve body 11 and the pipeline, reduces the scouring of the valve body 11 and the pipeline, improves the safety factor, and extends the service life.

[0024] Furthermore, it also includes a connecting assembly, which includes a first threaded cylinder 31 fixed on the contraction section pipe 21 and a second threaded cylinder 32 fixed on the expansion pipe 23; the connecting assembly also includes a first external thread 33 opened at one end of the throat pipe 22 and a second external thread 34 opened at the other end of the throat pipe 22. In practical use, the first external thread 33 is connected to the first threaded cylinder 31, and the second external thread 34 is connected to the second threaded cylinder 32. This allows the user to replace the contraction section pipe 21, the throat pipe 22, and the expansion pipe 23 individually, thus enabling flexible assembly of the Venturi channel to meet different needs.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hydrophobic device with a two-stage Venturi channel, characterized in that, include: A steam trap assembly, comprising a valve body (11), an inlet channel (12) formed in the valve body (11), a first venturi channel (13) threaded to the inlet channel (12), a top channel (14) formed on the top surface of the valve body (11), a second venturi channel (15) threaded to the top channel (14), an outlet channel (17) formed in the valve body (11), a water delivery channel (16) connecting the top channel (14) and the outlet channel (17), a first plug (18) sealing the top channel (14), and a second plug (19) sealing the end of the inlet channel (12). The first Venturi channel (13) includes a constriction section pipe (21), a throat pipe (22) connected to the constriction section pipe (21), and an expansion pipe (23) connected to the throat pipe (22).

2. A hydrophobic device with a two-stage Venturi channel according to claim 1, characterized in that, The second Venturi channel (15) has the same structure as the first Venturi channel (13), and the second Venturi channel (15) has the same structure of contraction section pipe (21), throat pipe (22) and expansion pipe (23).

3. A hydrophobic device with a two-stage Venturi channel according to claim 1, characterized in that, It also includes a connecting assembly comprising a first threaded cylinder (31) fixed to the contraction section pipe (21) and a second threaded cylinder (32) fixed to the expansion pipe (23).

4. A hydrophobic device with a two-stage Venturi channel according to claim 3, characterized in that, The connecting assembly also includes a first external thread (33) at one end of the throat pipe (22) and a second external thread (34) at the other end of the throat pipe (22).

5. A hydrophobic device with a two-stage Venturi channel according to claim 4, characterized in that, The first external thread (33) is connected to the first threaded cylinder (31), and the second external thread (34) is connected to the second threaded cylinder (32).

6. A hydrophobic device with a two-stage Venturi channel according to claim 5, characterized in that: Condensate containing steam enters through the contraction section pipe (21) and exits through the expansion pipe (23).

7. A hydrophobic device with a two-stage Venturi channel according to claim 6, characterized in that: The first Venturi channel (13) and the second Venturi channel (15) are alloy steel pipes.

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