An online adjustable Venturi and bimetallic strip combined hydrophobic device

Abstract

This invention discloses an online adjustable Venturi and bimetallic strip combined steam trap, comprising a Y-shaped shell, a filter device inserted into the inclined tube section of the Y-shaped shell, a vertical tube section installed at the top center of the Y-shaped shell, a sealing seat installed on the upper side of the inner cavity of the vertical tube section, a through hole through the center of the sealing seat, a pin inserted into the through hole, a limit block threaded on the inner side of the pin, and several thermosensitive bimetallic strips filled between the limit block and the inner side of the sealing seat, a cover plate threaded on the top of the vertical tube section, an adjusting knob inserted into the center of the cover plate, and the bottom end of the adjusting knob inserted into the top of the pin. This invention utilizes the thermal expansion and contraction of the thermosensitive bimetallic strips to allow relative movement of the pin within the sleeve. The Y-shaped filter structure of the steam trap facilitates filter screen cleaning, and the adjusting knob adjusts the pin, thereby achieving online adjustment of the condensate discharge rate.

Description

Technical Field

[0001] This invention relates to the field of steam trap technology, specifically to a combined venturi and bimetallic strip structure steam trap that can be adjusted online. Background Technology

[0002] Existing bimetallic thermostatic steam traps operate on the principle that a bimetallic temperature-sensing element inside the trap deforms with temperature changes in the steam-condensate mixture, thus actuating the valve core to open or close the valve. According to GB / T4461-2020, the current bimetallic element grades with linear thermal curvature have a maximum temperature range of 200℃, while saturated steam temperatures at 1.6MPa and above exceed 201℃, and superheated steam temperatures are even higher. Therefore, bimetallic thermostatic steam traps are no longer suitable for medium- and high-pressure steam pipelines. This invention adds a Venturi structure channel to the front end of the bimetallic strip. Utilizing the specific structure of the Venturi channel for drainage and steam blocking, and its significant temperature and pressure reduction, the temperature of the steam condensate passing through the Venturi channel is kept below the maximum applicable temperature range of the bimetallic strip. Simultaneously, the condensate flow rate of the steam trap can be adjusted online to achieve optimal operating conditions. Summary of the Invention

[0003] The purpose of this invention is to provide an online adjustable Venturi and bimetallic strip combined hydrophobic device to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an online adjustable Venturi and bimetallic strip combined drain condenser, comprising a Y-shaped shell, wherein the Y-shaped shell further comprises a straight section and an inclined section, the straight section being closed in the middle, a filter device being inserted and installed inside the inclined section, a sealing plug being threaded onto the outer opening of the inclined section, a vertical section being installed at the top center of the Y-shaped shell, the vertical section and the inclined section being interconnected, a Venturi insert being installed at the bottom of the inner cavity of the vertical section, and the vertical section being... A sealing seat is installed on the upper side of the inner cavity of the pipe section. A through hole is opened in the middle of the sealing seat. A pin is inserted into the through hole. A limit block is threaded on the inner side of the pin. The limit block is inserted into the inner cavity of the vertical pipe section. Several thermosensitive bimetallic strips are filled and installed between the limit block and the inner side of the sealing seat. The pin passes through the thermosensitive bimetallic strips. A cover plate is threaded on the top of the vertical pipe section. An adjusting knob is inserted into the middle of the cover plate. The bottom end of the adjusting knob is inserted into the top of the pin. A fastening nut is threaded on the middle of the cover plate. A flow pipe is opened through one side between the vertical pipe section and the straight pipe section of the Y-shaped structure shell.

[0005] Furthermore, the Venturi plug-in has a gradually narrowing and expanding channel extending laterally.

[0006] Furthermore, the two sides of the limiting block fit into the inner wall of the vertical pipe section.

[0007] Furthermore, the filtration device is a filter screen.

[0008] Furthermore, the inclined tube section of the Y-shaped structure housing forms a first chamber, the Y-shaped structure housing and the sealing seat form a second chamber, and the sealing seat and the cover plate form a third chamber.

[0009] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0010] This invention utilizes the thermal expansion and contraction of a thermistor bimetallic strip to allow the pin to move relative to the sleeve. The Y-shaped filter structure of the steam trap makes it easier to clean the filter screen. Adjusting the knob allows for adjustment of the pin, thereby controlling the discharge of condensate. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a top view of the pin of the present invention.

[0014] In the diagram: 1. Y-shaped shell structure; 2. Straight pipe section of Y-shaped shell structure; 3. Inclined pipe section of Y-shaped shell structure; 4. Filter device; 5. Sealing plug; 6. Vertical pipe section; 7. Venturi insert; 8. Sealing seat; 9. Through hole; 10. Pin; 11. Limiting block; 12. Thermosensitive bimetallic strip; 13. Cover plate; 14. Adjusting knob; 15. Fastening nut; 16. Flow pipe; 17. First chamber; 18. Second chamber; 19. Third chamber. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1:

[0017] As shown in the attached diagram of the instruction manual. Figures 1 to 2The diagram shows an online adjustable Venturi and bimetallic strip combined drain condenser, comprising a Y-shaped housing 1, a straight section 2, and an inclined section 3. The straight section 2 is closed in the middle. A filter 4 is inserted and installed inside the inclined section 3. A sealing plug 5 is threaded onto the outer opening of the inclined section 3. A vertical section 6 is installed at the top center of the Y-shaped housing 1, and the vertical section 6 and the inclined section 3 are interconnected. A Venturi insert 7 is installed at the bottom of the inner cavity of the vertical section 6, and a sealing seat 8 is installed on the upper side of the inner cavity of the vertical section 6. A through hole 9 is opened through the middle of the sealing seat 8. A pin 10 is inserted into the through hole 9. A limit block 11 is threaded on the inner side of the pin 10. The limit block 11 is inserted into the inner cavity of the vertical pipe section 6. Several thermosensitive bimetallic strips 12 are filled between the limit block 11 and the inner side of the sealing seat 8. The pin 10 passes through the thermosensitive bimetallic strips 12. A cover plate 13 is threaded on the top of the vertical pipe section 6. An adjustment knob 14 is inserted into the middle of the cover plate 13. The bottom end of the adjustment knob 14 is inserted into the top of the pin 10. A fastening nut 15 is threaded on the middle of the cover plate 13. A flow pipe 16 is opened through one side between the vertical pipe section 6 and the straight pipe section 2 of the Y-shaped structure shell.

[0018] In order for the high-temperature and high-pressure steam-water mixture to undergo pressure reduction and flash evaporation in the expanding section after passing through the tapered channel of the Venturi insert 7, and to absorb the latent heat of vaporization, the temperature and pressure of the fluid will be greatly reduced. Furthermore, the Venturi insert 7 has a tapered channel that extends laterally through it.

[0019] To further improve the stability of the pin 10, the two sides of the limiting block 11 are fitted with the inner wall of the vertical pipe section 6.

[0020] To ensure the overall filtration effect and facilitate future replacement, filter device 4 is further selected as a filter screen.

[0021] Furthermore, the Y-shaped structure shell inclined tube section 3 forms a first chamber 17, the Y-shaped structure shell 1 and the sealing seat 8 form a second chamber 18, and the sealing seat 8 and the cover plate 13 form a third chamber 19.

[0022] The present invention utilizes the thermal expansion and contraction of the thermosensitive bimetallic strip 12 to make the pin 10 move relative to the sealing seat 8. The Y-shaped filter structure adopted by the steam trap makes it easier to clean the filter screen. The adjustment knob 14 adjusts the pin 10 to realize the discharge of condensate.

[0023] Example 2:

[0024] This invention provides an online adjustable Venturi and bimetallic strip combined steam trap. The overall process is as follows: a high-temperature steam-water mixture enters the first chamber 17 from the outlet section and is filtered by a filter screen to remove any impurities; it then enters the second chamber 18 through the Venturi insert 7; it enters the third chamber 19 through the gap between the sealing seat 8 and the pin 10; and finally, it reaches the outlet section through a channel on the side wall to discharge condensate. The thermosensitive bimetallic strip 12 can change with the fluid temperature. When exposed to high-temperature steam, it expands and deforms, causing the pin 10 to contact the sealing surface of the sealing seat 8 to form a sealing barrier, creating a steam-blocking state. When the steam condenses into low-temperature condensate, the thermosensitive bimetallic strip 12 returns to its original shape, the pin 10 separates from the sealing surface of the sealing seat 8, the channel opens, and the condensate is discharged. Compared with conventional Venturi steam traps, this design retains the backflow prevention mechanism formed by the flash evaporation of high-temperature condensate through the Venturi steam trap. The pressure achieves the characteristics of hydrophobicity and steam blocking, and can also overcome the situation where the Venturi steam trap cannot block steam when the amount of superheated steam condensate is too small. Compared with traditional thermostatic steam traps, it can also overcome the situation where heat-sensitive materials lose their deformation characteristics in the high-temperature range and cannot work properly. At the same time, since the Venturi orifice is small with a diameter of 0.3-0.6mm, it is easy to be blocked. Therefore, the steam trap has a built-in filter device 4. The Y-type filter structure adopted in this invention makes it easier to clean the filter screen. There is no need to disassemble the steam trap during cleaning. You only need to remove the sealing plug 5 at the end of the inclined tube section 3 of the Y-type structure shell to clean or replace the filter screen. When the steam trap is working, if it is necessary to adjust the drainage volume, you only need to open the fastening nut 15 and then turn the adjusting knob 14 to adjust the distance between the pin 10 and the sealing seat 8, thereby further adjusting the drainage volume, making it more convenient to use.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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 process, method, article, or apparatus.

[0026] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An on-line adjustable Venturi and bimetallic strip structure combined trap, comprising a Y-shaped structure shell (1), characterized in that: The Y-shaped structure shell (1) further comprises a Y-shaped structure shell straight pipe section (2) and a Y-shaped structure shell inclined pipe section (3), the Y-shaped structure shell straight pipe section (2) is closed in the middle, the Y-shaped structure shell inclined pipe section (3) is internally provided with a filtering device (4), the Y-shaped structure shell inclined pipe section (3) is externally provided with a sealing plug (5) at the opening, the Y-shaped structure shell (1) is provided with a vertical pipe section (6) at the middle of the top end, the vertical pipe section (6) and the Y-shaped structure shell inclined pipe section (3) are in communication with each other, the vertical pipe section (6) is internally provided with a Venturi insert (7) at the bottom end, the vertical pipe section (6) is internally provided with a sealing seat (8) at the upper side, the sealing seat (8) is provided with a through hole (9) in the middle, the through hole (9) is internally provided with a bolt (10), the bolt (10) is externally provided with a limiting block (11), the limiting block (11) is inserted into the vertical pipe section (6), the limiting block (11) and the inner side of the sealing seat (8) are filled with a plurality of heat-sensitive bimetallic strips (12), the bolt (10) penetrates the heat-sensitive bimetallic strips (12), the vertical pipe section (6) is externally provided with a cover plate (13) at the top end, the cover plate (13) is internally provided with an adjusting knob (14) in the middle, the adjusting knob (14) is inserted into the top end of the bolt (10), the cover plate (13) is internally provided with a fastening nut (15) in the middle, the vertical pipe section (6) and one side of the Y-shaped structure shell straight pipe section (2) are provided with a flow channel (16) penetrating therebetween. The Venturi insert (7) is transversely provided with a gradually tapered channel; The limiting block (11) is in engagement with the inner wall of the vertical pipe section (6) on both sides; The Y-shaped structure shell inclined pipe section (3) internally forms a first chamber (17), the Y-shaped structure shell (1) and the sealing seat (8) form a second chamber (18), and the sealing seat (8) and the cover plate (13) form a third chamber (19).

2. An online adjustable Venturi and bimetallic strip combination strainer according to claim 1, wherein: The filtering device (4) is a filter screen.

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